Merging upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1280 files changed, 26940 insertions, 0 deletions

diff --git a/tests/ui/parser/ascii-only-character-escape.rs b/tests/ui/parser/ascii-only-character-escape.rs
new file mode 100644
index 000000000..725c8ad23
--- /dev/null
+++ b/tests/ui/parser/ascii-only-character-escape.rs
@@ -0,0 +1,6 @@
+fn main() {
+    let x = "\x80"; //~ ERROR out of range hex escape
+    let y = "\xff"; //~ ERROR out of range hex escape
+    let z = "\xe2"; //~ ERROR out of range hex escape
+    let a = b"\x00e2";  // ok because byte literal
+}
diff --git a/tests/ui/parser/ascii-only-character-escape.stderr b/tests/ui/parser/ascii-only-character-escape.stderr
new file mode 100644
index 000000000..b599b35f4
--- /dev/null
+++ b/tests/ui/parser/ascii-only-character-escape.stderr
@@ -0,0 +1,20 @@
+error: out of range hex escape
+  --> $DIR/ascii-only-character-escape.rs:2:14
+   |
+LL |     let x = "\x80";
+   |              ^^^^ must be a character in the range [\x00-\x7f]
+
+error: out of range hex escape
+  --> $DIR/ascii-only-character-escape.rs:3:14
+   |
+LL |     let y = "\xff";
+   |              ^^^^ must be a character in the range [\x00-\x7f]
+
+error: out of range hex escape
+  --> $DIR/ascii-only-character-escape.rs:4:14
+   |
+LL |     let z = "\xe2";
+   |              ^^^^ must be a character in the range [\x00-\x7f]
+
+error: aborting due to 3 previous errors
+
diff --git a/tests/ui/parser/assoc-const-underscore-semantic-fail.rs b/tests/ui/parser/assoc-const-underscore-semantic-fail.rs
new file mode 100644
index 000000000..d37ce06c5
--- /dev/null
+++ b/tests/ui/parser/assoc-const-underscore-semantic-fail.rs
@@ -0,0 +1,17 @@
+// Semantically, an associated constant cannot use `_` as a name.
+
+fn main() {}
+
+const _: () = {
+    pub trait A {
+        const _: () = (); //~ ERROR `const` items in this context need a name
+    }
+    impl A for () {
+        const _: () = (); //~ ERROR `const` items in this context need a name
+        //~^ ERROR const `_` is not a member of trait `A`
+    }
+    struct B;
+    impl B {
+        const _: () = (); //~ ERROR `const` items in this context need a name
+    }
+};
diff --git a/tests/ui/parser/assoc-const-underscore-semantic-fail.stderr b/tests/ui/parser/assoc-const-underscore-semantic-fail.stderr
new file mode 100644
index 000000000..538bf0ec1
--- /dev/null
+++ b/tests/ui/parser/assoc-const-underscore-semantic-fail.stderr
@@ -0,0 +1,27 @@
+error: `const` items in this context need a name
+  --> $DIR/assoc-const-underscore-semantic-fail.rs:7:15
+   |
+LL |         const _: () = ();
+   |               ^ `_` is not a valid name for this `const` item
+
+error: `const` items in this context need a name
+  --> $DIR/assoc-const-underscore-semantic-fail.rs:10:15
+   |
+LL |         const _: () = ();
+   |               ^ `_` is not a valid name for this `const` item
+
+error: `const` items in this context need a name
+  --> $DIR/assoc-const-underscore-semantic-fail.rs:15:15
+   |
+LL |         const _: () = ();
+   |               ^ `_` is not a valid name for this `const` item
+
+error[E0438]: const `_` is not a member of trait `A`
+  --> $DIR/assoc-const-underscore-semantic-fail.rs:10:9
+   |
+LL |         const _: () = ();
+   |         ^^^^^^^^^^^^^^^^^ not a member of trait `A`
+
+error: aborting due to 4 previous errors
+
+For more information about this error, try `rustc --explain E0438`.
diff --git a/tests/ui/parser/assoc-const-underscore-syntactic-pass.rs b/tests/ui/parser/assoc-const-underscore-syntactic-pass.rs
new file mode 100644
index 000000000..60da408c8
--- /dev/null
+++ b/tests/ui/parser/assoc-const-underscore-syntactic-pass.rs
@@ -0,0 +1,18 @@
+// All constant items (associated or otherwise) may syntactically use `_` as a name.
+
+// check-pass
+
+fn main() {}
+
+#[cfg(FALSE)]
+const _: () = {
+    pub trait A {
+        const _: () = ();
+    }
+    impl A for () {
+        const _: () = ();
+    }
+    impl dyn A {
+        const _: () = ();
+    }
+};
diff --git a/tests/ui/parser/assoc-oddities-1.rs b/tests/ui/parser/assoc-oddities-1.rs
new file mode 100644
index 000000000..5914805e5
--- /dev/null
+++ b/tests/ui/parser/assoc-oddities-1.rs
@@ -0,0 +1,11 @@
+// compile-flags: -Z parse-only
+
+fn main() {
+    // following lines below parse and must not fail
+    x = if c { a } else { b }();
+    x = if true { 1 } else { 0 } as *mut _;
+    // however this does not parse and probably should fail to retain compat?
+    // N.B., `..` here is arbitrary, failure happens/should happen ∀ops that aren’t `=`
+    // see assoc-oddities-2 and assoc-oddities-3
+    ..if c { a } else { b }[n]; //~ ERROR expected one of
+}
diff --git a/tests/ui/parser/assoc-oddities-1.stderr b/tests/ui/parser/assoc-oddities-1.stderr
new file mode 100644
index 000000000..acf71b489
--- /dev/null
+++ b/tests/ui/parser/assoc-oddities-1.stderr
@@ -0,0 +1,8 @@
+error: expected one of `.`, `;`, `?`, or `}`, found `[`
+  --> $DIR/assoc-oddities-1.rs:10:28
+   |
+LL |     ..if c { a } else { b }[n];
+   |                            ^ expected one of `.`, `;`, `?`, or `}`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/assoc-oddities-2.rs b/tests/ui/parser/assoc-oddities-2.rs
new file mode 100644
index 000000000..3d35aad74
--- /dev/null
+++ b/tests/ui/parser/assoc-oddities-2.rs
@@ -0,0 +1,6 @@
+// compile-flags: -Z parse-only
+
+fn main() {
+    // see assoc-oddities-1 for explanation
+    x..if c { a } else { b }[n]; //~ ERROR expected one of
+}
diff --git a/tests/ui/parser/assoc-oddities-2.stderr b/tests/ui/parser/assoc-oddities-2.stderr
new file mode 100644
index 000000000..d3b90c34c
--- /dev/null
+++ b/tests/ui/parser/assoc-oddities-2.stderr
@@ -0,0 +1,8 @@
+error: expected one of `.`, `;`, `?`, or `}`, found `[`
+  --> $DIR/assoc-oddities-2.rs:5:29
+   |
+LL |     x..if c { a } else { b }[n];
+   |                             ^ expected one of `.`, `;`, `?`, or `}`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/assoc-static-semantic-fail.rs b/tests/ui/parser/assoc-static-semantic-fail.rs
new file mode 100644
index 000000000..a8759d209
--- /dev/null
+++ b/tests/ui/parser/assoc-static-semantic-fail.rs
@@ -0,0 +1,52 @@
+// Semantically, we do not allow e.g., `static X: u8 = 0;` as an associated item.
+
+#![feature(specialization)]
+//~^ WARN the feature `specialization` is incomplete
+
+fn main() {}
+
+struct S;
+impl S {
+    static IA: u8 = 0;
+    //~^ ERROR associated `static` items are not allowed
+    static IB: u8;
+    //~^ ERROR associated `static` items are not allowed
+    //~| ERROR associated constant in `impl` without body
+    default static IC: u8 = 0;
+    //~^ ERROR associated `static` items are not allowed
+    //~| ERROR a static item cannot be `default`
+    pub(crate) default static ID: u8;
+    //~^ ERROR associated `static` items are not allowed
+    //~| ERROR associated constant in `impl` without body
+    //~| ERROR a static item cannot be `default`
+}
+
+trait T {
+    static TA: u8 = 0;
+    //~^ ERROR associated `static` items are not allowed
+    static TB: u8;
+    //~^ ERROR associated `static` items are not allowed
+    default static TC: u8 = 0;
+    //~^ ERROR associated `static` items are not allowed
+    //~| ERROR a static item cannot be `default`
+    pub(crate) default static TD: u8;
+    //~^ ERROR associated `static` items are not allowed
+    //~| ERROR unnecessary visibility qualifier
+    //~| ERROR a static item cannot be `default`
+}
+
+impl T for S {
+    static TA: u8 = 0;
+    //~^ ERROR associated `static` items are not allowed
+    static TB: u8;
+    //~^ ERROR associated `static` items are not allowed
+    //~| ERROR associated constant in `impl` without body
+    default static TC: u8 = 0;
+    //~^ ERROR associated `static` items are not allowed
+    //~| ERROR a static item cannot be `default`
+    pub default static TD: u8;
+    //~^ ERROR associated `static` items are not allowed
+    //~| ERROR associated constant in `impl` without body
+    //~| ERROR unnecessary visibility qualifier
+    //~| ERROR a static item cannot be `default`
+}
diff --git a/tests/ui/parser/assoc-static-semantic-fail.stderr b/tests/ui/parser/assoc-static-semantic-fail.stderr
new file mode 100644
index 000000000..8a74f49b9
--- /dev/null
+++ b/tests/ui/parser/assoc-static-semantic-fail.stderr
@@ -0,0 +1,177 @@
+error: associated `static` items are not allowed
+  --> $DIR/assoc-static-semantic-fail.rs:10:5
+   |
+LL |     static IA: u8 = 0;
+   |     ^^^^^^^^^^^^^^^^^^
+
+error: associated `static` items are not allowed
+  --> $DIR/assoc-static-semantic-fail.rs:12:5
+   |
+LL |     static IB: u8;
+   |     ^^^^^^^^^^^^^^
+
+error: a static item cannot be `default`
+  --> $DIR/assoc-static-semantic-fail.rs:15:5
+   |
+LL |     default static IC: u8 = 0;
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: associated `static` items are not allowed
+  --> $DIR/assoc-static-semantic-fail.rs:15:5
+   |
+LL |     default static IC: u8 = 0;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: a static item cannot be `default`
+  --> $DIR/assoc-static-semantic-fail.rs:18:16
+   |
+LL |     pub(crate) default static ID: u8;
+   |                ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: associated `static` items are not allowed
+  --> $DIR/assoc-static-semantic-fail.rs:18:5
+   |
+LL |     pub(crate) default static ID: u8;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: associated `static` items are not allowed
+  --> $DIR/assoc-static-semantic-fail.rs:25:5
+   |
+LL |     static TA: u8 = 0;
+   |     ^^^^^^^^^^^^^^^^^^
+
+error: associated `static` items are not allowed
+  --> $DIR/assoc-static-semantic-fail.rs:27:5
+   |
+LL |     static TB: u8;
+   |     ^^^^^^^^^^^^^^
+
+error: a static item cannot be `default`
+  --> $DIR/assoc-static-semantic-fail.rs:29:5
+   |
+LL |     default static TC: u8 = 0;
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: associated `static` items are not allowed
+  --> $DIR/assoc-static-semantic-fail.rs:29:5
+   |
+LL |     default static TC: u8 = 0;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: a static item cannot be `default`
+  --> $DIR/assoc-static-semantic-fail.rs:32:16
+   |
+LL |     pub(crate) default static TD: u8;
+   |                ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: associated `static` items are not allowed
+  --> $DIR/assoc-static-semantic-fail.rs:32:5
+   |
+LL |     pub(crate) default static TD: u8;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: associated `static` items are not allowed
+  --> $DIR/assoc-static-semantic-fail.rs:39:5
+   |
+LL |     static TA: u8 = 0;
+   |     ^^^^^^^^^^^^^^^^^^
+
+error: associated `static` items are not allowed
+  --> $DIR/assoc-static-semantic-fail.rs:41:5
+   |
+LL |     static TB: u8;
+   |     ^^^^^^^^^^^^^^
+
+error: a static item cannot be `default`
+  --> $DIR/assoc-static-semantic-fail.rs:44:5
+   |
+LL |     default static TC: u8 = 0;
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: associated `static` items are not allowed
+  --> $DIR/assoc-static-semantic-fail.rs:44:5
+   |
+LL |     default static TC: u8 = 0;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: a static item cannot be `default`
+  --> $DIR/assoc-static-semantic-fail.rs:47:9
+   |
+LL |     pub default static TD: u8;
+   |         ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: associated `static` items are not allowed
+  --> $DIR/assoc-static-semantic-fail.rs:47:5
+   |
+LL |     pub default static TD: u8;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: associated constant in `impl` without body
+  --> $DIR/assoc-static-semantic-fail.rs:12:5
+   |
+LL |     static IB: u8;
+   |     ^^^^^^^^^^^^^-
+   |                  |
+   |                  help: provide a definition for the constant: `= <expr>;`
+
+error: associated constant in `impl` without body
+  --> $DIR/assoc-static-semantic-fail.rs:18:5
+   |
+LL |     pub(crate) default static ID: u8;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
+   |                                     |
+   |                                     help: provide a definition for the constant: `= <expr>;`
+
+error[E0449]: unnecessary visibility qualifier
+  --> $DIR/assoc-static-semantic-fail.rs:32:5
+   |
+LL |     pub(crate) default static TD: u8;
+   |     ^^^^^^^^^^
+
+error: associated constant in `impl` without body
+  --> $DIR/assoc-static-semantic-fail.rs:41:5
+   |
+LL |     static TB: u8;
+   |     ^^^^^^^^^^^^^-
+   |                  |
+   |                  help: provide a definition for the constant: `= <expr>;`
+
+error: associated constant in `impl` without body
+  --> $DIR/assoc-static-semantic-fail.rs:47:5
+   |
+LL |     pub default static TD: u8;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^-
+   |                              |
+   |                              help: provide a definition for the constant: `= <expr>;`
+
+error[E0449]: unnecessary visibility qualifier
+  --> $DIR/assoc-static-semantic-fail.rs:47:5
+   |
+LL |     pub default static TD: u8;
+   |     ^^^ `pub` not permitted here because it's implied
+
+warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes
+  --> $DIR/assoc-static-semantic-fail.rs:3:12
+   |
+LL | #![feature(specialization)]
+   |            ^^^^^^^^^^^^^^
+   |
+   = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
+   = help: consider using `min_specialization` instead, which is more stable and complete
+   = note: `#[warn(incomplete_features)]` on by default
+
+error: aborting due to 24 previous errors; 1 warning emitted
+
+For more information about this error, try `rustc --explain E0449`.
diff --git a/tests/ui/parser/assoc-static-syntactic-fail.rs b/tests/ui/parser/assoc-static-syntactic-fail.rs
new file mode 100644
index 000000000..492f2ea16
--- /dev/null
+++ b/tests/ui/parser/assoc-static-syntactic-fail.rs
@@ -0,0 +1,33 @@
+// Syntactically, we do allow e.g., `static X: u8 = 0;` as an associated item.
+
+fn main() {}
+
+#[cfg(FALSE)]
+impl S {
+    static IA: u8 = 0; //~ ERROR associated `static` items are not allowed
+    static IB: u8; //~ ERROR associated `static` items are not allowed
+    default static IC: u8 = 0; //~ ERROR associated `static` items are not allowed
+    //~^ ERROR a static item cannot be `default`
+    pub(crate) default static ID: u8; //~ ERROR associated `static` items are not allowed
+    //~^ ERROR a static item cannot be `default`
+}
+
+#[cfg(FALSE)]
+trait T {
+    static TA: u8 = 0; //~ ERROR associated `static` items are not allowed
+    static TB: u8; //~ ERROR associated `static` items are not allowed
+    default static TC: u8 = 0; //~ ERROR associated `static` items are not allowed
+    //~^ ERROR a static item cannot be `default`
+    pub(crate) default static TD: u8; //~ ERROR associated `static` items are not allowed
+    //~^ ERROR a static item cannot be `default`
+}
+
+#[cfg(FALSE)]
+impl T for S {
+    static TA: u8 = 0; //~ ERROR associated `static` items are not allowed
+    static TB: u8; //~ ERROR associated `static` items are not allowed
+    default static TC: u8 = 0; //~ ERROR associated `static` items are not allowed
+    //~^ ERROR a static item cannot be `default`
+    pub default static TD: u8; //~ ERROR associated `static` items are not allowed
+    //~^ ERROR a static item cannot be `default`
+}
diff --git a/tests/ui/parser/assoc-static-syntactic-fail.stderr b/tests/ui/parser/assoc-static-syntactic-fail.stderr
new file mode 100644
index 000000000..e97236145
--- /dev/null
+++ b/tests/ui/parser/assoc-static-syntactic-fail.stderr
@@ -0,0 +1,122 @@
+error: associated `static` items are not allowed
+  --> $DIR/assoc-static-syntactic-fail.rs:7:5
+   |
+LL |     static IA: u8 = 0;
+   |     ^^^^^^^^^^^^^^^^^^
+
+error: associated `static` items are not allowed
+  --> $DIR/assoc-static-syntactic-fail.rs:8:5
+   |
+LL |     static IB: u8;
+   |     ^^^^^^^^^^^^^^
+
+error: a static item cannot be `default`
+  --> $DIR/assoc-static-syntactic-fail.rs:9:5
+   |
+LL |     default static IC: u8 = 0;
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: associated `static` items are not allowed
+  --> $DIR/assoc-static-syntactic-fail.rs:9:5
+   |
+LL |     default static IC: u8 = 0;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: a static item cannot be `default`
+  --> $DIR/assoc-static-syntactic-fail.rs:11:16
+   |
+LL |     pub(crate) default static ID: u8;
+   |                ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: associated `static` items are not allowed
+  --> $DIR/assoc-static-syntactic-fail.rs:11:5
+   |
+LL |     pub(crate) default static ID: u8;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: associated `static` items are not allowed
+  --> $DIR/assoc-static-syntactic-fail.rs:17:5
+   |
+LL |     static TA: u8 = 0;
+   |     ^^^^^^^^^^^^^^^^^^
+
+error: associated `static` items are not allowed
+  --> $DIR/assoc-static-syntactic-fail.rs:18:5
+   |
+LL |     static TB: u8;
+   |     ^^^^^^^^^^^^^^
+
+error: a static item cannot be `default`
+  --> $DIR/assoc-static-syntactic-fail.rs:19:5
+   |
+LL |     default static TC: u8 = 0;
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: associated `static` items are not allowed
+  --> $DIR/assoc-static-syntactic-fail.rs:19:5
+   |
+LL |     default static TC: u8 = 0;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: a static item cannot be `default`
+  --> $DIR/assoc-static-syntactic-fail.rs:21:16
+   |
+LL |     pub(crate) default static TD: u8;
+   |                ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: associated `static` items are not allowed
+  --> $DIR/assoc-static-syntactic-fail.rs:21:5
+   |
+LL |     pub(crate) default static TD: u8;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: associated `static` items are not allowed
+  --> $DIR/assoc-static-syntactic-fail.rs:27:5
+   |
+LL |     static TA: u8 = 0;
+   |     ^^^^^^^^^^^^^^^^^^
+
+error: associated `static` items are not allowed
+  --> $DIR/assoc-static-syntactic-fail.rs:28:5
+   |
+LL |     static TB: u8;
+   |     ^^^^^^^^^^^^^^
+
+error: a static item cannot be `default`
+  --> $DIR/assoc-static-syntactic-fail.rs:29:5
+   |
+LL |     default static TC: u8 = 0;
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: associated `static` items are not allowed
+  --> $DIR/assoc-static-syntactic-fail.rs:29:5
+   |
+LL |     default static TC: u8 = 0;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: a static item cannot be `default`
+  --> $DIR/assoc-static-syntactic-fail.rs:31:9
+   |
+LL |     pub default static TD: u8;
+   |         ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: associated `static` items are not allowed
+  --> $DIR/assoc-static-syntactic-fail.rs:31:5
+   |
+LL |     pub default static TD: u8;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: aborting due to 18 previous errors
+
diff --git a/tests/ui/parser/assoc-type-in-type-arg.rs b/tests/ui/parser/assoc-type-in-type-arg.rs
new file mode 100644
index 000000000..000956ea2
--- /dev/null
+++ b/tests/ui/parser/assoc-type-in-type-arg.rs
@@ -0,0 +1,11 @@
+trait Tr {
+    type TrSubtype;
+}
+
+struct Bar<'a, Item: Tr, <Item as Tr>::TrSubtype: 'a> {
+    //~^ ERROR bounds on associated types do not belong here
+    item: Item,
+    item_sub: &'a <Item as Tr>::TrSubtype,
+}
+
+fn main() {}
diff --git a/tests/ui/parser/assoc-type-in-type-arg.stderr b/tests/ui/parser/assoc-type-in-type-arg.stderr
new file mode 100644
index 000000000..b637702f2
--- /dev/null
+++ b/tests/ui/parser/assoc-type-in-type-arg.stderr
@@ -0,0 +1,8 @@
+error: bounds on associated types do not belong here
+  --> $DIR/assoc-type-in-type-arg.rs:5:26
+   |
+LL | struct Bar<'a, Item: Tr, <Item as Tr>::TrSubtype: 'a> {
+   |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^ belongs in `where` clause
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/associated-types-project-from-hrtb-explicit.rs b/tests/ui/parser/associated-types-project-from-hrtb-explicit.rs
new file mode 100644
index 000000000..b238a9ca2
--- /dev/null
+++ b/tests/ui/parser/associated-types-project-from-hrtb-explicit.rs
@@ -0,0 +1,16 @@
+// Test you can't use a higher-ranked trait bound inside of a qualified
+// path (just won't parse).
+
+pub trait Foo<T> {
+    type A;
+
+    fn get(&self, t: T) -> Self::A;
+}
+
+fn foo2<I>(x: <I as for<'x> Foo<&'x isize>>::A)
+    //~^ ERROR expected identifier, found keyword `for`
+    //~| ERROR expected one of `::` or `>`
+{
+}
+
+pub fn main() {}
diff --git a/tests/ui/parser/associated-types-project-from-hrtb-explicit.stderr b/tests/ui/parser/associated-types-project-from-hrtb-explicit.stderr
new file mode 100644
index 000000000..aa0fa0e3c
--- /dev/null
+++ b/tests/ui/parser/associated-types-project-from-hrtb-explicit.stderr
@@ -0,0 +1,14 @@
+error: expected identifier, found keyword `for`
+  --> $DIR/associated-types-project-from-hrtb-explicit.rs:10:21
+   |
+LL | fn foo2<I>(x: <I as for<'x> Foo<&'x isize>>::A)
+   |                     ^^^ expected identifier, found keyword
+
+error: expected one of `::` or `>`, found `Foo`
+  --> $DIR/associated-types-project-from-hrtb-explicit.rs:10:29
+   |
+LL | fn foo2<I>(x: <I as for<'x> Foo<&'x isize>>::A)
+   |                             ^^^ expected one of `::` or `>`
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/attr-bad-meta-2.rs b/tests/ui/parser/attr-bad-meta-2.rs
new file mode 100644
index 000000000..db612ed88
--- /dev/null
+++ b/tests/ui/parser/attr-bad-meta-2.rs
@@ -0,0 +1,2 @@
+#[path =] //~ ERROR expected expression, found `]`
+mod m {}
diff --git a/tests/ui/parser/attr-bad-meta-2.stderr b/tests/ui/parser/attr-bad-meta-2.stderr
new file mode 100644
index 000000000..6fc6fb665
--- /dev/null
+++ b/tests/ui/parser/attr-bad-meta-2.stderr
@@ -0,0 +1,8 @@
+error: expected expression, found `]`
+  --> $DIR/attr-bad-meta-2.rs:1:9
+   |
+LL | #[path =]
+   |         ^ expected expression
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/attr-bad-meta-3.rs b/tests/ui/parser/attr-bad-meta-3.rs
new file mode 100644
index 000000000..b51e9f221
--- /dev/null
+++ b/tests/ui/parser/attr-bad-meta-3.rs
@@ -0,0 +1,2 @@
+#[path() token] //~ ERROR expected `]`, found `token`
+mod m {}
diff --git a/tests/ui/parser/attr-bad-meta-3.stderr b/tests/ui/parser/attr-bad-meta-3.stderr
new file mode 100644
index 000000000..4fa420c79
--- /dev/null
+++ b/tests/ui/parser/attr-bad-meta-3.stderr
@@ -0,0 +1,8 @@
+error: expected `]`, found `token`
+  --> $DIR/attr-bad-meta-3.rs:1:10
+   |
+LL | #[path() token]
+   |          ^^^^^ expected `]`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/attr-bad-meta.rs b/tests/ui/parser/attr-bad-meta.rs
new file mode 100644
index 000000000..8001977f5
--- /dev/null
+++ b/tests/ui/parser/attr-bad-meta.rs
@@ -0,0 +1,2 @@
+#[path*] //~ ERROR expected one of `(`, `::`, `=`, `[`, `]`, or `{`, found `*`
+mod m {}
diff --git a/tests/ui/parser/attr-bad-meta.stderr b/tests/ui/parser/attr-bad-meta.stderr
new file mode 100644
index 000000000..8d65c423c
--- /dev/null
+++ b/tests/ui/parser/attr-bad-meta.stderr
@@ -0,0 +1,8 @@
+error: expected one of `(`, `::`, `=`, `[`, `]`, or `{`, found `*`
+  --> $DIR/attr-bad-meta.rs:1:7
+   |
+LL | #[path*]
+   |       ^ expected one of `(`, `::`, `=`, `[`, `]`, or `{`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/attr-before-eof.rs b/tests/ui/parser/attr-before-eof.rs
new file mode 100644
index 000000000..6af1783e6
--- /dev/null
+++ b/tests/ui/parser/attr-before-eof.rs
@@ -0,0 +1,3 @@
+fn main() {}
+
+#[derive(Debug)] //~ERROR expected item after attributes
diff --git a/tests/ui/parser/attr-before-eof.stderr b/tests/ui/parser/attr-before-eof.stderr
new file mode 100644
index 000000000..a2acb9437
--- /dev/null
+++ b/tests/ui/parser/attr-before-eof.stderr
@@ -0,0 +1,8 @@
+error: expected item after attributes
+  --> $DIR/attr-before-eof.rs:3:1
+   |
+LL | #[derive(Debug)]
+   | ^^^^^^^^^^^^^^^^
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/attr-dangling-in-fn.rs b/tests/ui/parser/attr-dangling-in-fn.rs
new file mode 100644
index 000000000..c7c45bafb
--- /dev/null
+++ b/tests/ui/parser/attr-dangling-in-fn.rs
@@ -0,0 +1,8 @@
+// error-pattern:expected statement
+
+fn f() {
+  #[foo = "bar"]
+}
+
+fn main() {
+}
diff --git a/tests/ui/parser/attr-dangling-in-fn.stderr b/tests/ui/parser/attr-dangling-in-fn.stderr
new file mode 100644
index 000000000..b1bb3ab3b
--- /dev/null
+++ b/tests/ui/parser/attr-dangling-in-fn.stderr
@@ -0,0 +1,8 @@
+error: expected statement after outer attribute
+  --> $DIR/attr-dangling-in-fn.rs:4:3
+   |
+LL |   #[foo = "bar"]
+   |   ^^^^^^^^^^^^^^
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/attr-dangling-in-mod.rs b/tests/ui/parser/attr-dangling-in-mod.rs
new file mode 100644
index 000000000..261ed3913
--- /dev/null
+++ b/tests/ui/parser/attr-dangling-in-mod.rs
@@ -0,0 +1,6 @@
+// error-pattern:expected item
+
+fn main() {
+}
+
+#[foo = "bar"]
diff --git a/tests/ui/parser/attr-dangling-in-mod.stderr b/tests/ui/parser/attr-dangling-in-mod.stderr
new file mode 100644
index 000000000..1c892eac0
--- /dev/null
+++ b/tests/ui/parser/attr-dangling-in-mod.stderr
@@ -0,0 +1,8 @@
+error: expected item after attributes
+  --> $DIR/attr-dangling-in-mod.rs:6:1
+   |
+LL | #[foo = "bar"]
+   | ^^^^^^^^^^^^^^
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/attr-stmt-expr-attr-bad.rs b/tests/ui/parser/attr-stmt-expr-attr-bad.rs
new file mode 100644
index 000000000..469c3855c
--- /dev/null
+++ b/tests/ui/parser/attr-stmt-expr-attr-bad.rs
@@ -0,0 +1,109 @@
+fn main() {}
+
+#[cfg(FALSE)] fn e() { let _ = box #![attr] 0; }
+//~^ ERROR an inner attribute is not permitted in this context
+#[cfg(FALSE)] fn e() { let _ = [#[attr]]; }
+//~^ ERROR expected expression, found `]`
+#[cfg(FALSE)] fn e() { let _ = foo#[attr](); }
+//~^ ERROR expected one of
+#[cfg(FALSE)] fn e() { let _ = foo(#![attr]); }
+//~^ ERROR an inner attribute is not permitted in this context
+//~| ERROR expected expression, found `)`
+#[cfg(FALSE)] fn e() { let _ = x.foo(#![attr]); }
+//~^ ERROR an inner attribute is not permitted in this context
+//~| ERROR expected expression, found `)`
+#[cfg(FALSE)] fn e() { let _ = 0 + #![attr] 0; }
+//~^ ERROR an inner attribute is not permitted in this context
+#[cfg(FALSE)] fn e() { let _ = !#![attr] 0; }
+//~^ ERROR an inner attribute is not permitted in this context
+#[cfg(FALSE)] fn e() { let _ = -#![attr] 0; }
+//~^ ERROR an inner attribute is not permitted in this context
+#[cfg(FALSE)] fn e() { let _ = x #![attr] as Y; }
+//~^ ERROR expected one of
+#[cfg(FALSE)] fn e() { let _ = || #![attr] foo; }
+//~^ ERROR an inner attribute is not permitted in this context
+#[cfg(FALSE)] fn e() { let _ = move || #![attr] foo; }
+//~^ ERROR an inner attribute is not permitted in this context
+#[cfg(FALSE)] fn e() { let _ = || #![attr] {foo}; }
+//~^ ERROR an inner attribute is not permitted in this context
+#[cfg(FALSE)] fn e() { let _ = move || #![attr] {foo}; }
+//~^ ERROR an inner attribute is not permitted in this context
+#[cfg(FALSE)] fn e() { let _ = #[attr] ..#[attr] 0; }
+//~^ ERROR expected expression, found `..`
+#[cfg(FALSE)] fn e() { let _ = #[attr] ..; }
+//~^ ERROR expected expression, found `..`
+#[cfg(FALSE)] fn e() { let _ = #[attr] &#![attr] 0; }
+//~^ ERROR an inner attribute is not permitted in this context
+#[cfg(FALSE)] fn e() { let _ = #[attr] &mut #![attr] 0; }
+//~^ ERROR an inner attribute is not permitted in this context
+#[cfg(FALSE)] fn e() { let _ = if 0 #[attr] {}; }
+//~^ ERROR outer attributes are not allowed on `if`
+#[cfg(FALSE)] fn e() { let _ = if 0 {#![attr]}; }
+//~^ ERROR an inner attribute is not permitted in this context
+#[cfg(FALSE)] fn e() { let _ = if 0 {} #[attr] else {}; }
+//~^ ERROR expected one of
+#[cfg(FALSE)] fn e() { let _ = if 0 {} else #[attr] {}; }
+//~^ ERROR outer attributes are not allowed on `if`
+#[cfg(FALSE)] fn e() { let _ = if 0 {} else {#![attr]}; }
+//~^ ERROR an inner attribute is not permitted in this context
+#[cfg(FALSE)] fn e() { let _ = if 0 {} else #[attr] if 0 {}; }
+//~^ ERROR outer attributes are not allowed on `if`
+#[cfg(FALSE)] fn e() { let _ = if 0 {} else if 0 #[attr] {}; }
+//~^ ERROR outer attributes are not allowed on `if`
+#[cfg(FALSE)] fn e() { let _ = if 0 {} else if 0 {#![attr]}; }
+//~^ ERROR an inner attribute is not permitted in this context
+#[cfg(FALSE)] fn e() { let _ = if let _ = 0 #[attr] {}; }
+//~^ ERROR outer attributes are not allowed on `if`
+#[cfg(FALSE)] fn e() { let _ = if let _ = 0 {#![attr]}; }
+//~^ ERROR an inner attribute is not permitted in this context
+#[cfg(FALSE)] fn e() { let _ = if let _ = 0 {} #[attr] else {}; }
+//~^ ERROR expected one of
+#[cfg(FALSE)] fn e() { let _ = if let _ = 0 {} else #[attr] {}; }
+//~^ ERROR outer attributes are not allowed on `if`
+#[cfg(FALSE)] fn e() { let _ = if let _ = 0 {} else {#![attr]}; }
+//~^ ERROR an inner attribute is not permitted in this context
+#[cfg(FALSE)] fn e() { let _ = if let _ = 0 {} else #[attr] if let _ = 0 {}; }
+//~^ ERROR outer attributes are not allowed on `if`
+#[cfg(FALSE)] fn e() { let _ = if let _ = 0 {} else if let _ = 0 #[attr] {}; }
+//~^ ERROR outer attributes are not allowed on `if`
+#[cfg(FALSE)] fn e() { let _ = if let _ = 0 {} else if let _ = 0 {#![attr]}; }
+//~^ ERROR an inner attribute is not permitted in this context
+
+#[cfg(FALSE)] fn s() { #[attr] #![attr] let _ = 0; }
+//~^ ERROR an inner attribute is not permitted following an outer attribute
+#[cfg(FALSE)] fn s() { #[attr] #![attr] 0; }
+//~^ ERROR an inner attribute is not permitted following an outer attribute
+#[cfg(FALSE)] fn s() { #[attr] #![attr] foo!(); }
+//~^ ERROR an inner attribute is not permitted following an outer attribute
+#[cfg(FALSE)] fn s() { #[attr] #![attr] foo![]; }
+//~^ ERROR an inner attribute is not permitted following an outer attribute
+#[cfg(FALSE)] fn s() { #[attr] #![attr] foo!{}; }
+//~^ ERROR an inner attribute is not permitted following an outer attribute
+
+// FIXME: Allow attributes in pattern constexprs?
+// note: requires parens in patterns to allow disambiguation
+
+#[cfg(FALSE)] fn e() { match 0 { 0..=#[attr] 10 => () } }
+//~^ ERROR inclusive range with no end
+//~| ERROR expected one of `=>`, `if`, or `|`, found `#`
+#[cfg(FALSE)] fn e() { match 0 { 0..=#[attr] -10 => () } }
+//~^ ERROR inclusive range with no end
+//~| ERROR expected one of `=>`, `if`, or `|`, found `#`
+#[cfg(FALSE)] fn e() { match 0 { 0..=-#[attr] 10 => () } }
+//~^ ERROR unexpected token: `#`
+#[cfg(FALSE)] fn e() { match 0 { 0..=#[attr] FOO => () } }
+//~^ ERROR inclusive range with no end
+//~| ERROR expected one of `=>`, `if`, or `|`, found `#`
+
+#[cfg(FALSE)] fn e() { let _ = x.#![attr]foo(); }
+//~^ ERROR unexpected token: `#`
+//~| ERROR expected one of `.`
+#[cfg(FALSE)] fn e() { let _ = x.#[attr]foo(); }
+//~^ ERROR unexpected token: `#`
+//~| ERROR expected one of `.`
+
+// make sure we don't catch this bug again...
+#[cfg(FALSE)] fn e() { { fn foo() { #[attr]; } } }
+//~^ ERROR expected statement after outer attribute
+#[cfg(FALSE)] fn e() { { fn foo() { #[attr] } } }
+//~^ ERROR expected statement after outer attribute
diff --git a/tests/ui/parser/attr-stmt-expr-attr-bad.stderr b/tests/ui/parser/attr-stmt-expr-attr-bad.stderr
new file mode 100644
index 000000000..872c560cb
--- /dev/null
+++ b/tests/ui/parser/attr-stmt-expr-attr-bad.stderr
@@ -0,0 +1,445 @@
+error: an inner attribute is not permitted in this context
+  --> $DIR/attr-stmt-expr-attr-bad.rs:3:36
+   |
+LL | #[cfg(FALSE)] fn e() { let _ = box #![attr] 0; }
+   |                                    ^^^^^^^^
+   |
+   = note: inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually found at the beginning of source files
+   = note: outer attributes, like `#[test]`, annotate the item following them
+
+error: expected expression, found `]`
+  --> $DIR/attr-stmt-expr-attr-bad.rs:5:40
+   |
+LL | #[cfg(FALSE)] fn e() { let _ = [#[attr]]; }
+   |                                        ^ expected expression
+
+error: expected one of `!`, `.`, `::`, `;`, `?`, `else`, `{`, or an operator, found `#`
+  --> $DIR/attr-stmt-expr-attr-bad.rs:7:35
+   |
+LL | #[cfg(FALSE)] fn e() { let _ = foo#[attr](); }
+   |                                   ^ expected one of 8 possible tokens
+
+error: an inner attribute is not permitted in this context
+  --> $DIR/attr-stmt-expr-attr-bad.rs:9:36
+   |
+LL | #[cfg(FALSE)] fn e() { let _ = foo(#![attr]); }
+   |                                    ^^^^^^^^
+   |
+   = note: inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually found at the beginning of source files
+   = note: outer attributes, like `#[test]`, annotate the item following them
+
+error: expected expression, found `)`
+  --> $DIR/attr-stmt-expr-attr-bad.rs:9:44
+   |
+LL | #[cfg(FALSE)] fn e() { let _ = foo(#![attr]); }
+   |                                            ^ expected expression
+
+error: an inner attribute is not permitted in this context
+  --> $DIR/attr-stmt-expr-attr-bad.rs:12:38
+   |
+LL | #[cfg(FALSE)] fn e() { let _ = x.foo(#![attr]); }
+   |                                      ^^^^^^^^
+   |
+   = note: inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually found at the beginning of source files
+   = note: outer attributes, like `#[test]`, annotate the item following them
+
+error: expected expression, found `)`
+  --> $DIR/attr-stmt-expr-attr-bad.rs:12:46
+   |
+LL | #[cfg(FALSE)] fn e() { let _ = x.foo(#![attr]); }
+   |                                              ^ expected expression
+
+error: an inner attribute is not permitted in this context
+  --> $DIR/attr-stmt-expr-attr-bad.rs:15:36
+   |
+LL | #[cfg(FALSE)] fn e() { let _ = 0 + #![attr] 0; }
+   |                                    ^^^^^^^^
+   |
+   = note: inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually found at the beginning of source files
+   = note: outer attributes, like `#[test]`, annotate the item following them
+
+error: an inner attribute is not permitted in this context
+  --> $DIR/attr-stmt-expr-attr-bad.rs:17:33
+   |
+LL | #[cfg(FALSE)] fn e() { let _ = !#![attr] 0; }
+   |                                 ^^^^^^^^
+   |
+   = note: inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually found at the beginning of source files
+   = note: outer attributes, like `#[test]`, annotate the item following them
+
+error: an inner attribute is not permitted in this context
+  --> $DIR/attr-stmt-expr-attr-bad.rs:19:33
+   |
+LL | #[cfg(FALSE)] fn e() { let _ = -#![attr] 0; }
+   |                                 ^^^^^^^^
+   |
+   = note: inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually found at the beginning of source files
+   = note: outer attributes, like `#[test]`, annotate the item following them
+
+error: expected one of `!`, `.`, `::`, `;`, `?`, `else`, `{`, or an operator, found `#`
+  --> $DIR/attr-stmt-expr-attr-bad.rs:21:34
+   |
+LL | #[cfg(FALSE)] fn e() { let _ = x #![attr] as Y; }
+   |                                  ^ expected one of 8 possible tokens
+
+error: an inner attribute is not permitted in this context
+  --> $DIR/attr-stmt-expr-attr-bad.rs:23:35
+   |
+LL | #[cfg(FALSE)] fn e() { let _ = || #![attr] foo; }
+   |                                   ^^^^^^^^
+   |
+   = note: inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually found at the beginning of source files
+   = note: outer attributes, like `#[test]`, annotate the item following them
+
+error: an inner attribute is not permitted in this context
+  --> $DIR/attr-stmt-expr-attr-bad.rs:25:40
+   |
+LL | #[cfg(FALSE)] fn e() { let _ = move || #![attr] foo; }
+   |                                        ^^^^^^^^
+   |
+   = note: inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually found at the beginning of source files
+   = note: outer attributes, like `#[test]`, annotate the item following them
+
+error: an inner attribute is not permitted in this context
+  --> $DIR/attr-stmt-expr-attr-bad.rs:27:35
+   |
+LL | #[cfg(FALSE)] fn e() { let _ = || #![attr] {foo}; }
+   |                                   ^^^^^^^^
+   |
+   = note: inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually found at the beginning of source files
+   = note: outer attributes, like `#[test]`, annotate the item following them
+
+error: an inner attribute is not permitted in this context
+  --> $DIR/attr-stmt-expr-attr-bad.rs:29:40
+   |
+LL | #[cfg(FALSE)] fn e() { let _ = move || #![attr] {foo}; }
+   |                                        ^^^^^^^^
+   |
+   = note: inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually found at the beginning of source files
+   = note: outer attributes, like `#[test]`, annotate the item following them
+
+error: expected expression, found `..`
+  --> $DIR/attr-stmt-expr-attr-bad.rs:31:40
+   |
+LL | #[cfg(FALSE)] fn e() { let _ = #[attr] ..#[attr] 0; }
+   |                                        ^^ expected expression
+
+error: expected expression, found `..`
+  --> $DIR/attr-stmt-expr-attr-bad.rs:33:40
+   |
+LL | #[cfg(FALSE)] fn e() { let _ = #[attr] ..; }
+   |                                        ^^ expected expression
+
+error: an inner attribute is not permitted in this context
+  --> $DIR/attr-stmt-expr-attr-bad.rs:35:41
+   |
+LL | #[cfg(FALSE)] fn e() { let _ = #[attr] &#![attr] 0; }
+   |                                         ^^^^^^^^
+   |
+   = note: inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually found at the beginning of source files
+   = note: outer attributes, like `#[test]`, annotate the item following them
+
+error: an inner attribute is not permitted in this context
+  --> $DIR/attr-stmt-expr-attr-bad.rs:37:45
+   |
+LL | #[cfg(FALSE)] fn e() { let _ = #[attr] &mut #![attr] 0; }
+   |                                             ^^^^^^^^
+   |
+   = note: inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually found at the beginning of source files
+   = note: outer attributes, like `#[test]`, annotate the item following them
+
+error: outer attributes are not allowed on `if` and `else` branches
+  --> $DIR/attr-stmt-expr-attr-bad.rs:39:37
+   |
+LL | #[cfg(FALSE)] fn e() { let _ = if 0 #[attr] {}; }
+   |                                --   ^^^^^^^ -- the attributes are attached to this branch
+   |                                |    |
+   |                                |    help: remove the attributes
+   |                                the branch belongs to this `if`
+
+error: an inner attribute is not permitted in this context
+  --> $DIR/attr-stmt-expr-attr-bad.rs:41:38
+   |
+LL | #[cfg(FALSE)] fn e() { let _ = if 0 {#![attr]}; }
+   |                                      ^^^^^^^^
+   |
+   = note: inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually found at the beginning of source files
+   = note: outer attributes, like `#[test]`, annotate the item following them
+
+error: expected one of `.`, `;`, `?`, `else`, or an operator, found `#`
+  --> $DIR/attr-stmt-expr-attr-bad.rs:43:40
+   |
+LL | #[cfg(FALSE)] fn e() { let _ = if 0 {} #[attr] else {}; }
+   |                                        ^ expected one of `.`, `;`, `?`, `else`, or an operator
+
+error: outer attributes are not allowed on `if` and `else` branches
+  --> $DIR/attr-stmt-expr-attr-bad.rs:45:45
+   |
+LL | #[cfg(FALSE)] fn e() { let _ = if 0 {} else #[attr] {}; }
+   |                                        ---- ^^^^^^^ -- the attributes are attached to this branch
+   |                                        |    |
+   |                                        |    help: remove the attributes
+   |                                        the branch belongs to this `else`
+
+error: an inner attribute is not permitted in this context
+  --> $DIR/attr-stmt-expr-attr-bad.rs:47:46
+   |
+LL | #[cfg(FALSE)] fn e() { let _ = if 0 {} else {#![attr]}; }
+   |                                              ^^^^^^^^
+   |
+   = note: inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually found at the beginning of source files
+   = note: outer attributes, like `#[test]`, annotate the item following them
+
+error: outer attributes are not allowed on `if` and `else` branches
+  --> $DIR/attr-stmt-expr-attr-bad.rs:49:45
+   |
+LL | #[cfg(FALSE)] fn e() { let _ = if 0 {} else #[attr] if 0 {}; }
+   |                                        ---- ^^^^^^^ ------- the attributes are attached to this branch
+   |                                        |    |
+   |                                        |    help: remove the attributes
+   |                                        the branch belongs to this `else`
+
+error: outer attributes are not allowed on `if` and `else` branches
+  --> $DIR/attr-stmt-expr-attr-bad.rs:51:50
+   |
+LL | #[cfg(FALSE)] fn e() { let _ = if 0 {} else if 0 #[attr] {}; }
+   |                                             --   ^^^^^^^ -- the attributes are attached to this branch
+   |                                             |    |
+   |                                             |    help: remove the attributes
+   |                                             the branch belongs to this `if`
+
+error: an inner attribute is not permitted in this context
+  --> $DIR/attr-stmt-expr-attr-bad.rs:53:51
+   |
+LL | #[cfg(FALSE)] fn e() { let _ = if 0 {} else if 0 {#![attr]}; }
+   |                                                   ^^^^^^^^
+   |
+   = note: inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually found at the beginning of source files
+   = note: outer attributes, like `#[test]`, annotate the item following them
+
+error: outer attributes are not allowed on `if` and `else` branches
+  --> $DIR/attr-stmt-expr-attr-bad.rs:55:45
+   |
+LL | #[cfg(FALSE)] fn e() { let _ = if let _ = 0 #[attr] {}; }
+   |                                --           ^^^^^^^ -- the attributes are attached to this branch
+   |                                |            |
+   |                                |            help: remove the attributes
+   |                                the branch belongs to this `if`
+
+error: an inner attribute is not permitted in this context
+  --> $DIR/attr-stmt-expr-attr-bad.rs:57:46
+   |
+LL | #[cfg(FALSE)] fn e() { let _ = if let _ = 0 {#![attr]}; }
+   |                                              ^^^^^^^^
+   |
+   = note: inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually found at the beginning of source files
+   = note: outer attributes, like `#[test]`, annotate the item following them
+
+error: expected one of `.`, `;`, `?`, `else`, or an operator, found `#`
+  --> $DIR/attr-stmt-expr-attr-bad.rs:59:48
+   |
+LL | #[cfg(FALSE)] fn e() { let _ = if let _ = 0 {} #[attr] else {}; }
+   |                                                ^ expected one of `.`, `;`, `?`, `else`, or an operator
+
+error: outer attributes are not allowed on `if` and `else` branches
+  --> $DIR/attr-stmt-expr-attr-bad.rs:61:53
+   |
+LL | #[cfg(FALSE)] fn e() { let _ = if let _ = 0 {} else #[attr] {}; }
+   |                                                ---- ^^^^^^^ -- the attributes are attached to this branch
+   |                                                |    |
+   |                                                |    help: remove the attributes
+   |                                                the branch belongs to this `else`
+
+error: an inner attribute is not permitted in this context
+  --> $DIR/attr-stmt-expr-attr-bad.rs:63:54
+   |
+LL | #[cfg(FALSE)] fn e() { let _ = if let _ = 0 {} else {#![attr]}; }
+   |                                                      ^^^^^^^^
+   |
+   = note: inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually found at the beginning of source files
+   = note: outer attributes, like `#[test]`, annotate the item following them
+
+error: outer attributes are not allowed on `if` and `else` branches
+  --> $DIR/attr-stmt-expr-attr-bad.rs:65:53
+   |
+LL | #[cfg(FALSE)] fn e() { let _ = if let _ = 0 {} else #[attr] if let _ = 0 {}; }
+   |                                                ---- ^^^^^^^ --------------- the attributes are attached to this branch
+   |                                                |    |
+   |                                                |    help: remove the attributes
+   |                                                the branch belongs to this `else`
+
+error: outer attributes are not allowed on `if` and `else` branches
+  --> $DIR/attr-stmt-expr-attr-bad.rs:67:66
+   |
+LL | #[cfg(FALSE)] fn e() { let _ = if let _ = 0 {} else if let _ = 0 #[attr] {}; }
+   |                                                     --           ^^^^^^^ -- the attributes are attached to this branch
+   |                                                     |            |
+   |                                                     |            help: remove the attributes
+   |                                                     the branch belongs to this `if`
+
+error: an inner attribute is not permitted in this context
+  --> $DIR/attr-stmt-expr-attr-bad.rs:69:67
+   |
+LL | #[cfg(FALSE)] fn e() { let _ = if let _ = 0 {} else if let _ = 0 {#![attr]}; }
+   |                                                                   ^^^^^^^^
+   |
+   = note: inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually found at the beginning of source files
+   = note: outer attributes, like `#[test]`, annotate the item following them
+
+error: an inner attribute is not permitted following an outer attribute
+  --> $DIR/attr-stmt-expr-attr-bad.rs:72:32
+   |
+LL | #[cfg(FALSE)] fn s() { #[attr] #![attr] let _ = 0; }
+   |                        ------- ^^^^^^^^ not permitted following an outer attribute
+   |                        |
+   |                        previous outer attribute
+   |
+   = note: inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually found at the beginning of source files
+   = note: outer attributes, like `#[test]`, annotate the item following them
+
+error: an inner attribute is not permitted following an outer attribute
+  --> $DIR/attr-stmt-expr-attr-bad.rs:74:32
+   |
+LL | #[cfg(FALSE)] fn s() { #[attr] #![attr] 0; }
+   |                        ------- ^^^^^^^^ not permitted following an outer attribute
+   |                        |
+   |                        previous outer attribute
+   |
+   = note: inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually found at the beginning of source files
+   = note: outer attributes, like `#[test]`, annotate the item following them
+
+error: an inner attribute is not permitted following an outer attribute
+  --> $DIR/attr-stmt-expr-attr-bad.rs:76:32
+   |
+LL | #[cfg(FALSE)] fn s() { #[attr] #![attr] foo!(); }
+   |                        ------- ^^^^^^^^ ------- the inner attribute doesn't annotate this item macro invocation
+   |                        |       |
+   |                        |       not permitted following an outer attribute
+   |                        previous outer attribute
+   |
+   = note: inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually found at the beginning of source files
+help: to annotate the item macro invocation, change the attribute from inner to outer style
+   |
+LL - #[cfg(FALSE)] fn s() { #[attr] #![attr] foo!(); }
+LL + #[cfg(FALSE)] fn s() { #[attr] #[attr] foo!(); }
+   |
+
+error: an inner attribute is not permitted following an outer attribute
+  --> $DIR/attr-stmt-expr-attr-bad.rs:78:32
+   |
+LL | #[cfg(FALSE)] fn s() { #[attr] #![attr] foo![]; }
+   |                        ------- ^^^^^^^^ ------- the inner attribute doesn't annotate this item macro invocation
+   |                        |       |
+   |                        |       not permitted following an outer attribute
+   |                        previous outer attribute
+   |
+   = note: inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually found at the beginning of source files
+help: to annotate the item macro invocation, change the attribute from inner to outer style
+   |
+LL - #[cfg(FALSE)] fn s() { #[attr] #![attr] foo![]; }
+LL + #[cfg(FALSE)] fn s() { #[attr] #[attr] foo![]; }
+   |
+
+error: an inner attribute is not permitted following an outer attribute
+  --> $DIR/attr-stmt-expr-attr-bad.rs:80:32
+   |
+LL | #[cfg(FALSE)] fn s() { #[attr] #![attr] foo!{}; }
+   |                        ------- ^^^^^^^^ ------ the inner attribute doesn't annotate this item macro invocation
+   |                        |       |
+   |                        |       not permitted following an outer attribute
+   |                        previous outer attribute
+   |
+   = note: inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually found at the beginning of source files
+help: to annotate the item macro invocation, change the attribute from inner to outer style
+   |
+LL - #[cfg(FALSE)] fn s() { #[attr] #![attr] foo!{}; }
+LL + #[cfg(FALSE)] fn s() { #[attr] #[attr] foo!{}; }
+   |
+
+error[E0586]: inclusive range with no end
+  --> $DIR/attr-stmt-expr-attr-bad.rs:86:35
+   |
+LL | #[cfg(FALSE)] fn e() { match 0 { 0..=#[attr] 10 => () } }
+   |                                   ^^^ help: use `..` instead
+   |
+   = note: inclusive ranges must be bounded at the end (`..=b` or `a..=b`)
+
+error: expected one of `=>`, `if`, or `|`, found `#`
+  --> $DIR/attr-stmt-expr-attr-bad.rs:86:38
+   |
+LL | #[cfg(FALSE)] fn e() { match 0 { 0..=#[attr] 10 => () } }
+   |                                      ^ expected one of `=>`, `if`, or `|`
+
+error[E0586]: inclusive range with no end
+  --> $DIR/attr-stmt-expr-attr-bad.rs:89:35
+   |
+LL | #[cfg(FALSE)] fn e() { match 0 { 0..=#[attr] -10 => () } }
+   |                                   ^^^ help: use `..` instead
+   |
+   = note: inclusive ranges must be bounded at the end (`..=b` or `a..=b`)
+
+error: expected one of `=>`, `if`, or `|`, found `#`
+  --> $DIR/attr-stmt-expr-attr-bad.rs:89:38
+   |
+LL | #[cfg(FALSE)] fn e() { match 0 { 0..=#[attr] -10 => () } }
+   |                                      ^ expected one of `=>`, `if`, or `|`
+
+error: unexpected token: `#`
+  --> $DIR/attr-stmt-expr-attr-bad.rs:92:39
+   |
+LL | #[cfg(FALSE)] fn e() { match 0 { 0..=-#[attr] 10 => () } }
+   |                                       ^
+
+error[E0586]: inclusive range with no end
+  --> $DIR/attr-stmt-expr-attr-bad.rs:94:35
+   |
+LL | #[cfg(FALSE)] fn e() { match 0 { 0..=#[attr] FOO => () } }
+   |                                   ^^^ help: use `..` instead
+   |
+   = note: inclusive ranges must be bounded at the end (`..=b` or `a..=b`)
+
+error: expected one of `=>`, `if`, or `|`, found `#`
+  --> $DIR/attr-stmt-expr-attr-bad.rs:94:38
+   |
+LL | #[cfg(FALSE)] fn e() { match 0 { 0..=#[attr] FOO => () } }
+   |                                      ^ expected one of `=>`, `if`, or `|`
+
+error: unexpected token: `#`
+  --> $DIR/attr-stmt-expr-attr-bad.rs:98:34
+   |
+LL | #[cfg(FALSE)] fn e() { let _ = x.#![attr]foo(); }
+   |                                  ^
+
+error: expected one of `.`, `;`, `?`, `else`, or an operator, found `#`
+  --> $DIR/attr-stmt-expr-attr-bad.rs:98:34
+   |
+LL | #[cfg(FALSE)] fn e() { let _ = x.#![attr]foo(); }
+   |                                  ^ expected one of `.`, `;`, `?`, `else`, or an operator
+
+error: unexpected token: `#`
+  --> $DIR/attr-stmt-expr-attr-bad.rs:101:34
+   |
+LL | #[cfg(FALSE)] fn e() { let _ = x.#[attr]foo(); }
+   |                                  ^
+
+error: expected one of `.`, `;`, `?`, `else`, or an operator, found `#`
+  --> $DIR/attr-stmt-expr-attr-bad.rs:101:34
+   |
+LL | #[cfg(FALSE)] fn e() { let _ = x.#[attr]foo(); }
+   |                                  ^ expected one of `.`, `;`, `?`, `else`, or an operator
+
+error: expected statement after outer attribute
+  --> $DIR/attr-stmt-expr-attr-bad.rs:106:37
+   |
+LL | #[cfg(FALSE)] fn e() { { fn foo() { #[attr]; } } }
+   |                                     ^^^^^^^
+
+error: expected statement after outer attribute
+  --> $DIR/attr-stmt-expr-attr-bad.rs:108:37
+   |
+LL | #[cfg(FALSE)] fn e() { { fn foo() { #[attr] } } }
+   |                                     ^^^^^^^
+
+error: aborting due to 53 previous errors
+
+For more information about this error, try `rustc --explain E0586`.
diff --git a/tests/ui/parser/attr-with-a-semicolon.rs b/tests/ui/parser/attr-with-a-semicolon.rs
new file mode 100644
index 000000000..56fe40b91
--- /dev/null
+++ b/tests/ui/parser/attr-with-a-semicolon.rs
@@ -0,0 +1,4 @@
+#[derive(Debug, Clone)]; //~ERROR expected item after attributes
+struct Foo;
+
+fn main() {}
diff --git a/tests/ui/parser/attr-with-a-semicolon.stderr b/tests/ui/parser/attr-with-a-semicolon.stderr
new file mode 100644
index 000000000..0de3490b8
--- /dev/null
+++ b/tests/ui/parser/attr-with-a-semicolon.stderr
@@ -0,0 +1,14 @@
+error: expected item after attributes
+  --> $DIR/attr-with-a-semicolon.rs:1:1
+   |
+LL | #[derive(Debug, Clone)];
+   | ^^^^^^^^^^^^^^^^^^^^^^^
+   |
+help: consider removing this semicolon
+   |
+LL - #[derive(Debug, Clone)];
+LL + #[derive(Debug, Clone)]
+   |
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/attr.rs b/tests/ui/parser/attr.rs
new file mode 100644
index 000000000..42b2dfde8
--- /dev/null
+++ b/tests/ui/parser/attr.rs
@@ -0,0 +1,6 @@
+#![feature(lang_items)]
+
+fn main() {}
+
+#![lang = "foo"] //~ ERROR an inner attribute is not permitted in this context
+fn foo() {}
diff --git a/tests/ui/parser/attr.stderr b/tests/ui/parser/attr.stderr
new file mode 100644
index 000000000..7cd0ac224
--- /dev/null
+++ b/tests/ui/parser/attr.stderr
@@ -0,0 +1,17 @@
+error: an inner attribute is not permitted in this context
+  --> $DIR/attr.rs:5:1
+   |
+LL | #![lang = "foo"]
+   | ^^^^^^^^^^^^^^^^
+LL | fn foo() {}
+   | ----------- the inner attribute doesn't annotate this function
+   |
+   = note: inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually found at the beginning of source files
+help: to annotate the function, change the attribute from inner to outer style
+   |
+LL - #![lang = "foo"]
+LL + #[lang = "foo"]
+   |
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/attribute-with-no-generics-in-parameter-list.rs b/tests/ui/parser/attribute-with-no-generics-in-parameter-list.rs
new file mode 100644
index 000000000..c2cc91d8f
--- /dev/null
+++ b/tests/ui/parser/attribute-with-no-generics-in-parameter-list.rs
@@ -0,0 +1,3 @@
+fn foo<#[attr]>() {} //~ ERROR attribute without generic parameters
+
+fn main() {}
diff --git a/tests/ui/parser/attribute-with-no-generics-in-parameter-list.stderr b/tests/ui/parser/attribute-with-no-generics-in-parameter-list.stderr
new file mode 100644
index 000000000..4c5964715
--- /dev/null
+++ b/tests/ui/parser/attribute-with-no-generics-in-parameter-list.stderr
@@ -0,0 +1,8 @@
+error: attribute without generic parameters
+  --> $DIR/attribute-with-no-generics-in-parameter-list.rs:1:8
+   |
+LL | fn foo<#[attr]>() {}
+   |        ^^^^^^^ attributes are only permitted when preceding parameters
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/attrs-after-extern-mod.rs b/tests/ui/parser/attrs-after-extern-mod.rs
new file mode 100644
index 000000000..e3f0fa0fc
--- /dev/null
+++ b/tests/ui/parser/attrs-after-extern-mod.rs
@@ -0,0 +1,7 @@
+// Make sure there's an error when given `extern { ... #[attr] }`.
+
+fn main() {}
+
+extern "C" {
+    #[cfg(stage37)] //~ ERROR expected item after attributes
+}
diff --git a/tests/ui/parser/attrs-after-extern-mod.stderr b/tests/ui/parser/attrs-after-extern-mod.stderr
new file mode 100644
index 000000000..135d98457
--- /dev/null
+++ b/tests/ui/parser/attrs-after-extern-mod.stderr
@@ -0,0 +1,12 @@
+error: expected item after attributes
+  --> $DIR/attrs-after-extern-mod.rs:6:5
+   |
+LL | extern "C" {
+   |            - while parsing this item list starting here
+LL |     #[cfg(stage37)]
+   |     ^^^^^^^^^^^^^^^
+LL | }
+   | - the item list ends here
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/bad-char-literals.rs b/tests/ui/parser/bad-char-literals.rs
new file mode 100644
index 000000000..748b4a222
--- /dev/null
+++ b/tests/ui/parser/bad-char-literals.rs
@@ -0,0 +1,20 @@
+// ignore-tidy-cr
+// ignore-tidy-tab
+
+fn main() {
+    // these literals are just silly.
+    ''';
+    //~^ ERROR: character constant must be escaped: `'`
+
+    // note that this is a literal "\n" byte
+    '
+';
+    //~^^ ERROR: character constant must be escaped: `\n`
+
+    // note that this is a literal "\r" byte
+    '
'; //~ ERROR: character constant must be escaped: `\r`
+
+    // note that this is a literal tab character here
+    '	';
+    //~^ ERROR: character constant must be escaped: `\t`
+}
diff --git a/tests/ui/parser/bad-char-literals.stderr b/tests/ui/parser/bad-char-literals.stderr
new file mode 100644
index 000000000..a22ddbac1
--- /dev/null
+++ b/tests/ui/parser/bad-char-literals.stderr
@@ -0,0 +1,28 @@
+error: character constant must be escaped: `'`
+  --> $DIR/bad-char-literals.rs:6:6
+   |
+LL |     ''';
+   |      ^ help: escape the character: `\'`
+
+error: character constant must be escaped: `\n`
+  --> $DIR/bad-char-literals.rs:10:6
+   |
+LL |       '
+   |  ______^
+LL | | ';
+   | |_ help: escape the character: `\n`
+
+error: character constant must be escaped: `\r`
+  --> $DIR/bad-char-literals.rs:15:6
+   |
+LL |     '
';
+   |      ^ help: escape the character: `\r`
+
+error: character constant must be escaped: `\t`
+  --> $DIR/bad-char-literals.rs:18:6
+   |
+LL |     '    ';
+   |      ^^^^ help: escape the character: `\t`
+
+error: aborting due to 4 previous errors
+
diff --git a/tests/ui/parser/bad-crate-name.rs b/tests/ui/parser/bad-crate-name.rs
new file mode 100644
index 000000000..837d5c354
--- /dev/null
+++ b/tests/ui/parser/bad-crate-name.rs
@@ -0,0 +1,5 @@
+extern crate krate-name-here;
+//~^ ERROR crate name using dashes are not valid in `extern crate` statements
+//~| ERROR can't find crate for `krate_name_here`
+
+fn main() {}
diff --git a/tests/ui/parser/bad-crate-name.stderr b/tests/ui/parser/bad-crate-name.stderr
new file mode 100644
index 000000000..c98a620f1
--- /dev/null
+++ b/tests/ui/parser/bad-crate-name.stderr
@@ -0,0 +1,20 @@
+error: crate name using dashes are not valid in `extern crate` statements
+  --> $DIR/bad-crate-name.rs:1:14
+   |
+LL | extern crate krate-name-here;
+   |              ^^^^^^^^^^^^^^^ dash-separated idents are not valid
+   |
+help: if the original crate name uses dashes you need to use underscores in the code
+   |
+LL | extern crate krate_name_here;
+   |                   ~    ~
+
+error[E0463]: can't find crate for `krate_name_here`
+  --> $DIR/bad-crate-name.rs:1:1
+   |
+LL | extern crate krate-name-here;
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0463`.
diff --git a/tests/ui/parser/bad-escape-suggest-raw-string.rs b/tests/ui/parser/bad-escape-suggest-raw-string.rs
new file mode 100644
index 000000000..978b92cbc
--- /dev/null
+++ b/tests/ui/parser/bad-escape-suggest-raw-string.rs
@@ -0,0 +1,7 @@
+fn main() {
+    let ok = r"ab\[c";
+    let bad = "ab\[c";
+    //~^ ERROR unknown character escape: `[`
+    //~| HELP for more information, visit <https://static.rust-lang.org/doc/master/reference.html#literals>
+    //~| HELP if you meant to write a literal backslash (perhaps escaping in a regular expression), consider a raw string literal
+}
diff --git a/tests/ui/parser/bad-escape-suggest-raw-string.stderr b/tests/ui/parser/bad-escape-suggest-raw-string.stderr
new file mode 100644
index 000000000..fc34bd328
--- /dev/null
+++ b/tests/ui/parser/bad-escape-suggest-raw-string.stderr
@@ -0,0 +1,14 @@
+error: unknown character escape: `[`
+  --> $DIR/bad-escape-suggest-raw-string.rs:3:19
+   |
+LL |     let bad = "ab\[c";
+   |                   ^ unknown character escape
+   |
+   = help: for more information, visit <https://static.rust-lang.org/doc/master/reference.html#literals>
+help: if you meant to write a literal backslash (perhaps escaping in a regular expression), consider a raw string literal
+   |
+LL |     let bad = r"ab\[c";
+   |               ~~~~~~~~
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/bad-fn-ptr-qualifier.fixed b/tests/ui/parser/bad-fn-ptr-qualifier.fixed
new file mode 100644
index 000000000..ad8e718cf
--- /dev/null
+++ b/tests/ui/parser/bad-fn-ptr-qualifier.fixed
@@ -0,0 +1,26 @@
+// run-rustfix
+// edition:2018
+// Most of items are taken from ./recover-const-async-fn-ptr.rs but this is able to apply rustfix.
+
+pub type T0 =  fn(); //~ ERROR an `fn` pointer type cannot be `const`
+pub type T1 =  extern "C" fn(); //~ ERROR an `fn` pointer type cannot be `const`
+pub type T2 =  unsafe extern fn(); //~ ERROR an `fn` pointer type cannot be `const`
+pub type T3 =  fn(); //~ ERROR an `fn` pointer type cannot be `async`
+pub type T4 =  extern fn(); //~ ERROR an `fn` pointer type cannot be `async`
+pub type T5 =  unsafe extern "C" fn(); //~ ERROR an `fn` pointer type cannot be `async`
+pub type T6 =   unsafe extern "C" fn();
+//~^ ERROR an `fn` pointer type cannot be `const`
+//~| ERROR an `fn` pointer type cannot be `async`
+
+pub type FTT0 = for<'a>  fn(); //~ ERROR an `fn` pointer type cannot be `const`
+pub type FTT1 = for<'a>  extern "C" fn(); //~ ERROR an `fn` pointer type cannot be `const`
+pub type FTT2 = for<'a>  unsafe extern fn(); //~ ERROR an `fn` pointer type cannot be `const`
+pub type FTT3 = for<'a>  fn(); //~ ERROR an `fn` pointer type cannot be `async`
+pub type FTT4 = for<'a>  extern fn(); //~ ERROR an `fn` pointer type cannot be `async`
+pub type FTT5 = for<'a>  unsafe extern "C" fn();
+//~^ ERROR an `fn` pointer type cannot be `async`
+pub type FTT6 = for<'a>   unsafe extern "C" fn();
+//~^ ERROR an `fn` pointer type cannot be `const`
+//~| ERROR an `fn` pointer type cannot be `async`
+
+fn main() {}
diff --git a/tests/ui/parser/bad-fn-ptr-qualifier.rs b/tests/ui/parser/bad-fn-ptr-qualifier.rs
new file mode 100644
index 000000000..c04813dad
--- /dev/null
+++ b/tests/ui/parser/bad-fn-ptr-qualifier.rs
@@ -0,0 +1,26 @@
+// run-rustfix
+// edition:2018
+// Most of items are taken from ./recover-const-async-fn-ptr.rs but this is able to apply rustfix.
+
+pub type T0 = const fn(); //~ ERROR an `fn` pointer type cannot be `const`
+pub type T1 = const extern "C" fn(); //~ ERROR an `fn` pointer type cannot be `const`
+pub type T2 = const unsafe extern fn(); //~ ERROR an `fn` pointer type cannot be `const`
+pub type T3 = async fn(); //~ ERROR an `fn` pointer type cannot be `async`
+pub type T4 = async extern fn(); //~ ERROR an `fn` pointer type cannot be `async`
+pub type T5 = async unsafe extern "C" fn(); //~ ERROR an `fn` pointer type cannot be `async`
+pub type T6 = const async unsafe extern "C" fn();
+//~^ ERROR an `fn` pointer type cannot be `const`
+//~| ERROR an `fn` pointer type cannot be `async`
+
+pub type FTT0 = for<'a> const fn(); //~ ERROR an `fn` pointer type cannot be `const`
+pub type FTT1 = for<'a> const extern "C" fn(); //~ ERROR an `fn` pointer type cannot be `const`
+pub type FTT2 = for<'a> const unsafe extern fn(); //~ ERROR an `fn` pointer type cannot be `const`
+pub type FTT3 = for<'a> async fn(); //~ ERROR an `fn` pointer type cannot be `async`
+pub type FTT4 = for<'a> async extern fn(); //~ ERROR an `fn` pointer type cannot be `async`
+pub type FTT5 = for<'a> async unsafe extern "C" fn();
+//~^ ERROR an `fn` pointer type cannot be `async`
+pub type FTT6 = for<'a> const async unsafe extern "C" fn();
+//~^ ERROR an `fn` pointer type cannot be `const`
+//~| ERROR an `fn` pointer type cannot be `async`
+
+fn main() {}
diff --git a/tests/ui/parser/bad-fn-ptr-qualifier.stderr b/tests/ui/parser/bad-fn-ptr-qualifier.stderr
new file mode 100644
index 000000000..265e31329
--- /dev/null
+++ b/tests/ui/parser/bad-fn-ptr-qualifier.stderr
@@ -0,0 +1,146 @@
+error: an `fn` pointer type cannot be `const`
+  --> $DIR/bad-fn-ptr-qualifier.rs:5:15
+   |
+LL | pub type T0 = const fn();
+   |               -----^^^^^
+   |               |
+   |               `const` because of this
+   |               help: remove the `const` qualifier
+
+error: an `fn` pointer type cannot be `const`
+  --> $DIR/bad-fn-ptr-qualifier.rs:6:15
+   |
+LL | pub type T1 = const extern "C" fn();
+   |               -----^^^^^^^^^^^^^^^^
+   |               |
+   |               `const` because of this
+   |               help: remove the `const` qualifier
+
+error: an `fn` pointer type cannot be `const`
+  --> $DIR/bad-fn-ptr-qualifier.rs:7:15
+   |
+LL | pub type T2 = const unsafe extern fn();
+   |               -----^^^^^^^^^^^^^^^^^^^
+   |               |
+   |               `const` because of this
+   |               help: remove the `const` qualifier
+
+error: an `fn` pointer type cannot be `async`
+  --> $DIR/bad-fn-ptr-qualifier.rs:8:15
+   |
+LL | pub type T3 = async fn();
+   |               -----^^^^^
+   |               |
+   |               `async` because of this
+   |               help: remove the `async` qualifier
+
+error: an `fn` pointer type cannot be `async`
+  --> $DIR/bad-fn-ptr-qualifier.rs:9:15
+   |
+LL | pub type T4 = async extern fn();
+   |               -----^^^^^^^^^^^^
+   |               |
+   |               `async` because of this
+   |               help: remove the `async` qualifier
+
+error: an `fn` pointer type cannot be `async`
+  --> $DIR/bad-fn-ptr-qualifier.rs:10:15
+   |
+LL | pub type T5 = async unsafe extern "C" fn();
+   |               -----^^^^^^^^^^^^^^^^^^^^^^^
+   |               |
+   |               `async` because of this
+   |               help: remove the `async` qualifier
+
+error: an `fn` pointer type cannot be `const`
+  --> $DIR/bad-fn-ptr-qualifier.rs:11:15
+   |
+LL | pub type T6 = const async unsafe extern "C" fn();
+   |               -----^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |               |
+   |               `const` because of this
+   |               help: remove the `const` qualifier
+
+error: an `fn` pointer type cannot be `async`
+  --> $DIR/bad-fn-ptr-qualifier.rs:11:15
+   |
+LL | pub type T6 = const async unsafe extern "C" fn();
+   |               ^^^^^^-----^^^^^^^^^^^^^^^^^^^^^^^
+   |                     |
+   |                     `async` because of this
+   |                     help: remove the `async` qualifier
+
+error: an `fn` pointer type cannot be `const`
+  --> $DIR/bad-fn-ptr-qualifier.rs:15:17
+   |
+LL | pub type FTT0 = for<'a> const fn();
+   |                 ^^^^^^^^-----^^^^^
+   |                         |
+   |                         `const` because of this
+   |                         help: remove the `const` qualifier
+
+error: an `fn` pointer type cannot be `const`
+  --> $DIR/bad-fn-ptr-qualifier.rs:16:17
+   |
+LL | pub type FTT1 = for<'a> const extern "C" fn();
+   |                 ^^^^^^^^-----^^^^^^^^^^^^^^^^
+   |                         |
+   |                         `const` because of this
+   |                         help: remove the `const` qualifier
+
+error: an `fn` pointer type cannot be `const`
+  --> $DIR/bad-fn-ptr-qualifier.rs:17:17
+   |
+LL | pub type FTT2 = for<'a> const unsafe extern fn();
+   |                 ^^^^^^^^-----^^^^^^^^^^^^^^^^^^^
+   |                         |
+   |                         `const` because of this
+   |                         help: remove the `const` qualifier
+
+error: an `fn` pointer type cannot be `async`
+  --> $DIR/bad-fn-ptr-qualifier.rs:18:17
+   |
+LL | pub type FTT3 = for<'a> async fn();
+   |                 ^^^^^^^^-----^^^^^
+   |                         |
+   |                         `async` because of this
+   |                         help: remove the `async` qualifier
+
+error: an `fn` pointer type cannot be `async`
+  --> $DIR/bad-fn-ptr-qualifier.rs:19:17
+   |
+LL | pub type FTT4 = for<'a> async extern fn();
+   |                 ^^^^^^^^-----^^^^^^^^^^^^
+   |                         |
+   |                         `async` because of this
+   |                         help: remove the `async` qualifier
+
+error: an `fn` pointer type cannot be `async`
+  --> $DIR/bad-fn-ptr-qualifier.rs:20:17
+   |
+LL | pub type FTT5 = for<'a> async unsafe extern "C" fn();
+   |                 ^^^^^^^^-----^^^^^^^^^^^^^^^^^^^^^^^
+   |                         |
+   |                         `async` because of this
+   |                         help: remove the `async` qualifier
+
+error: an `fn` pointer type cannot be `const`
+  --> $DIR/bad-fn-ptr-qualifier.rs:22:17
+   |
+LL | pub type FTT6 = for<'a> const async unsafe extern "C" fn();
+   |                 ^^^^^^^^-----^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |                         |
+   |                         `const` because of this
+   |                         help: remove the `const` qualifier
+
+error: an `fn` pointer type cannot be `async`
+  --> $DIR/bad-fn-ptr-qualifier.rs:22:17
+   |
+LL | pub type FTT6 = for<'a> const async unsafe extern "C" fn();
+   |                 ^^^^^^^^^^^^^^-----^^^^^^^^^^^^^^^^^^^^^^^
+   |                               |
+   |                               `async` because of this
+   |                               help: remove the `async` qualifier
+
+error: aborting due to 16 previous errors
+
diff --git a/tests/ui/parser/bad-if-statements.rs b/tests/ui/parser/bad-if-statements.rs
new file mode 100644
index 000000000..2c501e3a5
--- /dev/null
+++ b/tests/ui/parser/bad-if-statements.rs
@@ -0,0 +1,38 @@
+fn a() {
+    if {}
+    //~^ ERROR missing condition for `if` expression
+}
+
+fn b() {
+    if true && {}
+    //~^ ERROR this `if` expression is missing a block after the condition
+}
+
+fn c() {
+    let x = {};
+    if true x
+    //~^ ERROR expected `{`, found `x`
+}
+
+fn a2() {
+    if {} else {}
+    //~^ ERROR missing condition for `if` expression
+}
+
+fn b2() {
+    if true && {} else {}
+    //~^ ERROR this `if` expression is missing a block after the condition
+}
+
+fn c2() {
+    let x = {};
+    if true x else {}
+    //~^ ERROR expected `{`, found `x`
+}
+
+fn d() {
+    if true else {}
+    //~^ ERROR this `if` expression is missing a block after the condition
+}
+
+fn main() {}
diff --git a/tests/ui/parser/bad-if-statements.stderr b/tests/ui/parser/bad-if-statements.stderr
new file mode 100644
index 000000000..ee839db64
--- /dev/null
+++ b/tests/ui/parser/bad-if-statements.stderr
@@ -0,0 +1,86 @@
+error: missing condition for `if` expression
+  --> $DIR/bad-if-statements.rs:2:7
+   |
+LL |     if {}
+   |       ^- if this block is the condition of the `if` expression, then it must be followed by another block
+   |       |
+   |       expected condition here
+
+error: this `if` expression is missing a block after the condition
+  --> $DIR/bad-if-statements.rs:7:5
+   |
+LL |     if true && {}
+   |     ^^
+   |
+help: this binary operation is possibly unfinished
+  --> $DIR/bad-if-statements.rs:7:8
+   |
+LL |     if true && {}
+   |        ^^^^^^^
+
+error: expected `{`, found `x`
+  --> $DIR/bad-if-statements.rs:13:13
+   |
+LL |     if true x
+   |             ^ expected `{`
+   |
+note: the `if` expression is missing a block after this condition
+  --> $DIR/bad-if-statements.rs:13:8
+   |
+LL |     if true x
+   |        ^^^^
+help: try placing this code inside a block
+   |
+LL |     if true { x }
+   |             +   +
+
+error: missing condition for `if` expression
+  --> $DIR/bad-if-statements.rs:18:7
+   |
+LL |     if {} else {}
+   |       ^- if this block is the condition of the `if` expression, then it must be followed by another block
+   |       |
+   |       expected condition here
+
+error: this `if` expression is missing a block after the condition
+  --> $DIR/bad-if-statements.rs:23:5
+   |
+LL |     if true && {} else {}
+   |     ^^
+   |
+help: this binary operation is possibly unfinished
+  --> $DIR/bad-if-statements.rs:23:8
+   |
+LL |     if true && {} else {}
+   |        ^^^^^^^
+
+error: expected `{`, found `x`
+  --> $DIR/bad-if-statements.rs:29:13
+   |
+LL |     if true x else {}
+   |             ^ expected `{`
+   |
+note: the `if` expression is missing a block after this condition
+  --> $DIR/bad-if-statements.rs:29:8
+   |
+LL |     if true x else {}
+   |        ^^^^
+help: try placing this code inside a block
+   |
+LL |     if true { x } else {}
+   |             +   +
+
+error: this `if` expression is missing a block after the condition
+  --> $DIR/bad-if-statements.rs:34:5
+   |
+LL |     if true else {}
+   |     ^^
+   |
+help: add a block here
+  --> $DIR/bad-if-statements.rs:34:12
+   |
+LL |     if true else {}
+   |            ^
+
+error: aborting due to 7 previous errors
+
diff --git a/tests/ui/parser/bad-interpolated-block.rs b/tests/ui/parser/bad-interpolated-block.rs
new file mode 100644
index 000000000..c6d7ae383
--- /dev/null
+++ b/tests/ui/parser/bad-interpolated-block.rs
@@ -0,0 +1,13 @@
+fn main() {}
+
+macro_rules! m {
+    ($b:block) => {
+        'lab: $b; //~ ERROR cannot use a `block` macro fragment here
+        unsafe $b; //~ ERROR cannot use a `block` macro fragment here
+        |x: u8| -> () $b; //~ ERROR cannot use a `block` macro fragment here
+    }
+}
+
+fn foo() {
+    m!({});
+}
diff --git a/tests/ui/parser/bad-interpolated-block.stderr b/tests/ui/parser/bad-interpolated-block.stderr
new file mode 100644
index 000000000..2a0999afd
--- /dev/null
+++ b/tests/ui/parser/bad-interpolated-block.stderr
@@ -0,0 +1,39 @@
+error: cannot use a `block` macro fragment here
+  --> $DIR/bad-interpolated-block.rs:5:15
+   |
+LL |         'lab: $b;
+   |         ------^^
+   |         |
+   |         the `block` fragment is within this context
+...
+LL |     m!({});
+   |     ------ in this macro invocation
+   |
+   = note: this error originates in the macro `m` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: cannot use a `block` macro fragment here
+  --> $DIR/bad-interpolated-block.rs:6:16
+   |
+LL |         unsafe $b;
+   |         -------^^
+   |         |
+   |         the `block` fragment is within this context
+...
+LL |     m!({});
+   |     ------ in this macro invocation
+   |
+   = note: this error originates in the macro `m` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: cannot use a `block` macro fragment here
+  --> $DIR/bad-interpolated-block.rs:7:23
+   |
+LL |         |x: u8| -> () $b;
+   |                       ^^ the `block` fragment is within this context
+...
+LL |     m!({});
+   |     ------ in this macro invocation
+   |
+   = note: this error originates in the macro `m` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: aborting due to 3 previous errors
+
diff --git a/tests/ui/parser/bad-let-as-field.rs b/tests/ui/parser/bad-let-as-field.rs
new file mode 100644
index 000000000..fec2bc256
--- /dev/null
+++ b/tests/ui/parser/bad-let-as-field.rs
@@ -0,0 +1,6 @@
+struct Foo {
+    let: i32,
+    //~^ ERROR expected identifier, found keyword
+}
+
+fn main() {}
diff --git a/tests/ui/parser/bad-let-as-field.stderr b/tests/ui/parser/bad-let-as-field.stderr
new file mode 100644
index 000000000..57def42b1
--- /dev/null
+++ b/tests/ui/parser/bad-let-as-field.stderr
@@ -0,0 +1,15 @@
+error: expected identifier, found keyword `let`
+  --> $DIR/bad-let-as-field.rs:2:5
+   |
+LL | struct Foo {
+   |        --- while parsing this struct
+LL |     let: i32,
+   |     ^^^ expected identifier, found keyword
+   |
+help: escape `let` to use it as an identifier
+   |
+LL |     r#let: i32,
+   |     ++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/bad-lit-suffixes.rs b/tests/ui/parser/bad-lit-suffixes.rs
new file mode 100644
index 000000000..8cb9ef7e0
--- /dev/null
+++ b/tests/ui/parser/bad-lit-suffixes.rs
@@ -0,0 +1,44 @@
+#![feature(rustc_attrs)]
+
+extern
+    "C"suffix //~ ERROR suffixes on string literals are invalid
+    fn foo() {}
+
+extern
+    "C"suffix //~ ERROR suffixes on string literals are invalid
+{}
+
+fn main() {
+    ""suffix; //~ ERROR suffixes on string literals are invalid
+    b""suffix; //~ ERROR suffixes on byte string literals are invalid
+    r#""#suffix; //~ ERROR suffixes on string literals are invalid
+    br#""#suffix; //~ ERROR suffixes on byte string literals are invalid
+    'a'suffix; //~ ERROR suffixes on char literals are invalid
+    b'a'suffix; //~ ERROR suffixes on byte literals are invalid
+
+    1234u1024; //~ ERROR invalid width `1024` for integer literal
+    1234i1024; //~ ERROR invalid width `1024` for integer literal
+    1234f1024; //~ ERROR invalid width `1024` for float literal
+    1234.5f1024; //~ ERROR invalid width `1024` for float literal
+
+    1234suffix; //~ ERROR invalid suffix `suffix` for number literal
+    0b101suffix; //~ ERROR invalid suffix `suffix` for number literal
+    1.0suffix; //~ ERROR invalid suffix `suffix` for float literal
+    1.0e10suffix; //~ ERROR invalid suffix `suffix` for float literal
+}
+
+#[rustc_dummy = "string"suffix]
+//~^ ERROR unexpected expression: `"string"suffix`
+fn f() {}
+
+#[must_use = "string"suffix]
+//~^ ERROR unexpected expression: `"string"suffix`
+fn g() {}
+
+#[link(name = "string"suffix)]
+//~^ ERROR suffixes on string literals are invalid
+extern "C" {}
+
+#[rustc_layout_scalar_valid_range_start(0suffix)]
+//~^ ERROR invalid suffix `suffix` for number literal
+struct S;
diff --git a/tests/ui/parser/bad-lit-suffixes.stderr b/tests/ui/parser/bad-lit-suffixes.stderr
new file mode 100644
index 000000000..756f99ab1
--- /dev/null
+++ b/tests/ui/parser/bad-lit-suffixes.stderr
@@ -0,0 +1,140 @@
+error: suffixes on string literals are invalid
+  --> $DIR/bad-lit-suffixes.rs:4:5
+   |
+LL |     "C"suffix
+   |     ^^^^^^^^^ invalid suffix `suffix`
+
+error: suffixes on string literals are invalid
+  --> $DIR/bad-lit-suffixes.rs:8:5
+   |
+LL |     "C"suffix
+   |     ^^^^^^^^^ invalid suffix `suffix`
+
+error: unexpected expression: `"string"suffix`
+  --> $DIR/bad-lit-suffixes.rs:30:17
+   |
+LL | #[rustc_dummy = "string"suffix]
+   |                 ^^^^^^^^^^^^^^
+
+error: unexpected expression: `"string"suffix`
+  --> $DIR/bad-lit-suffixes.rs:34:14
+   |
+LL | #[must_use = "string"suffix]
+   |              ^^^^^^^^^^^^^^
+
+error: suffixes on string literals are invalid
+  --> $DIR/bad-lit-suffixes.rs:38:15
+   |
+LL | #[link(name = "string"suffix)]
+   |               ^^^^^^^^^^^^^^ invalid suffix `suffix`
+
+error: invalid suffix `suffix` for number literal
+  --> $DIR/bad-lit-suffixes.rs:42:41
+   |
+LL | #[rustc_layout_scalar_valid_range_start(0suffix)]
+   |                                         ^^^^^^^ invalid suffix `suffix`
+   |
+   = help: the suffix must be one of the numeric types (`u32`, `isize`, `f32`, etc.)
+
+error: suffixes on string literals are invalid
+  --> $DIR/bad-lit-suffixes.rs:12:5
+   |
+LL |     ""suffix;
+   |     ^^^^^^^^ invalid suffix `suffix`
+
+error: suffixes on byte string literals are invalid
+  --> $DIR/bad-lit-suffixes.rs:13:5
+   |
+LL |     b""suffix;
+   |     ^^^^^^^^^ invalid suffix `suffix`
+
+error: suffixes on string literals are invalid
+  --> $DIR/bad-lit-suffixes.rs:14:5
+   |
+LL |     r#""#suffix;
+   |     ^^^^^^^^^^^ invalid suffix `suffix`
+
+error: suffixes on byte string literals are invalid
+  --> $DIR/bad-lit-suffixes.rs:15:5
+   |
+LL |     br#""#suffix;
+   |     ^^^^^^^^^^^^ invalid suffix `suffix`
+
+error: suffixes on char literals are invalid
+  --> $DIR/bad-lit-suffixes.rs:16:5
+   |
+LL |     'a'suffix;
+   |     ^^^^^^^^^ invalid suffix `suffix`
+
+error: suffixes on byte literals are invalid
+  --> $DIR/bad-lit-suffixes.rs:17:5
+   |
+LL |     b'a'suffix;
+   |     ^^^^^^^^^^ invalid suffix `suffix`
+
+error: invalid width `1024` for integer literal
+  --> $DIR/bad-lit-suffixes.rs:19:5
+   |
+LL |     1234u1024;
+   |     ^^^^^^^^^
+   |
+   = help: valid widths are 8, 16, 32, 64 and 128
+
+error: invalid width `1024` for integer literal
+  --> $DIR/bad-lit-suffixes.rs:20:5
+   |
+LL |     1234i1024;
+   |     ^^^^^^^^^
+   |
+   = help: valid widths are 8, 16, 32, 64 and 128
+
+error: invalid width `1024` for float literal
+  --> $DIR/bad-lit-suffixes.rs:21:5
+   |
+LL |     1234f1024;
+   |     ^^^^^^^^^
+   |
+   = help: valid widths are 32 and 64
+
+error: invalid width `1024` for float literal
+  --> $DIR/bad-lit-suffixes.rs:22:5
+   |
+LL |     1234.5f1024;
+   |     ^^^^^^^^^^^
+   |
+   = help: valid widths are 32 and 64
+
+error: invalid suffix `suffix` for number literal
+  --> $DIR/bad-lit-suffixes.rs:24:5
+   |
+LL |     1234suffix;
+   |     ^^^^^^^^^^ invalid suffix `suffix`
+   |
+   = help: the suffix must be one of the numeric types (`u32`, `isize`, `f32`, etc.)
+
+error: invalid suffix `suffix` for number literal
+  --> $DIR/bad-lit-suffixes.rs:25:5
+   |
+LL |     0b101suffix;
+   |     ^^^^^^^^^^^ invalid suffix `suffix`
+   |
+   = help: the suffix must be one of the numeric types (`u32`, `isize`, `f32`, etc.)
+
+error: invalid suffix `suffix` for float literal
+  --> $DIR/bad-lit-suffixes.rs:26:5
+   |
+LL |     1.0suffix;
+   |     ^^^^^^^^^ invalid suffix `suffix`
+   |
+   = help: valid suffixes are `f32` and `f64`
+
+error: invalid suffix `suffix` for float literal
+  --> $DIR/bad-lit-suffixes.rs:27:5
+   |
+LL |     1.0e10suffix;
+   |     ^^^^^^^^^^^^ invalid suffix `suffix`
+   |
+   = help: valid suffixes are `f32` and `f64`
+
+error: aborting due to 20 previous errors
+
diff --git a/tests/ui/parser/bad-match.rs b/tests/ui/parser/bad-match.rs
new file mode 100644
index 000000000..04100d170
--- /dev/null
+++ b/tests/ui/parser/bad-match.rs
@@ -0,0 +1,4 @@
+fn main() {
+  let isize x = 5; //~ ERROR expected one of `:`, `;`, `=`, `@`, or `|`, found `x`
+  match x;
+}
diff --git a/tests/ui/parser/bad-match.stderr b/tests/ui/parser/bad-match.stderr
new file mode 100644
index 000000000..13784c409
--- /dev/null
+++ b/tests/ui/parser/bad-match.stderr
@@ -0,0 +1,8 @@
+error: expected one of `:`, `;`, `=`, `@`, or `|`, found `x`
+  --> $DIR/bad-match.rs:2:13
+   |
+LL |   let isize x = 5;
+   |             ^ expected one of `:`, `;`, `=`, `@`, or `|`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/bad-name.rs b/tests/ui/parser/bad-name.rs
new file mode 100644
index 000000000..9b4271692
--- /dev/null
+++ b/tests/ui/parser/bad-name.rs
@@ -0,0 +1,5 @@
+// error-pattern: expected
+
+fn main() {
+  let x.y::<isize>.z foo;
+}
diff --git a/tests/ui/parser/bad-name.stderr b/tests/ui/parser/bad-name.stderr
new file mode 100644
index 000000000..a36b67794
--- /dev/null
+++ b/tests/ui/parser/bad-name.stderr
@@ -0,0 +1,8 @@
+error: expected one of `:`, `;`, `=`, `@`, or `|`, found `.`
+  --> $DIR/bad-name.rs:4:8
+   |
+LL |   let x.y::<isize>.z foo;
+   |        ^ expected one of `:`, `;`, `=`, `@`, or `|`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/bad-pointer-type.rs b/tests/ui/parser/bad-pointer-type.rs
new file mode 100644
index 000000000..6a82acb4c
--- /dev/null
+++ b/tests/ui/parser/bad-pointer-type.rs
@@ -0,0 +1,5 @@
+fn foo(_: *()) {
+    //~^ ERROR expected `mut` or `const` keyword in raw pointer type
+}
+
+fn main() {}
diff --git a/tests/ui/parser/bad-pointer-type.stderr b/tests/ui/parser/bad-pointer-type.stderr
new file mode 100644
index 000000000..b7225ca88
--- /dev/null
+++ b/tests/ui/parser/bad-pointer-type.stderr
@@ -0,0 +1,15 @@
+error: expected `mut` or `const` keyword in raw pointer type
+  --> $DIR/bad-pointer-type.rs:1:11
+   |
+LL | fn foo(_: *()) {
+   |           ^
+   |
+help: add `mut` or `const` here
+   |
+LL | fn foo(_: *const ()) {
+   |            +++++
+LL | fn foo(_: *mut ()) {
+   |            +++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/bad-recover-kw-after-impl.rs b/tests/ui/parser/bad-recover-kw-after-impl.rs
new file mode 100644
index 000000000..218cd7678
--- /dev/null
+++ b/tests/ui/parser/bad-recover-kw-after-impl.rs
@@ -0,0 +1,15 @@
+// check-pass
+
+// edition:2021
+// for the `impl` + keyword test
+
+macro_rules! impl_primitive {
+    ($ty:ty) => {
+        compile_error!("whoops");
+    };
+    (impl async) => {};
+}
+
+impl_primitive!(impl async);
+
+fn main() {}
diff --git a/tests/ui/parser/bad-recover-ty-after-impl.rs b/tests/ui/parser/bad-recover-ty-after-impl.rs
new file mode 100644
index 000000000..510e08ba0
--- /dev/null
+++ b/tests/ui/parser/bad-recover-ty-after-impl.rs
@@ -0,0 +1,17 @@
+// check-pass
+
+macro_rules! impl_primitive {
+    ($ty:ty) => { impl_primitive!(impl $ty); };
+    (impl $ty:ty) => { fn a(_: $ty) {} }
+}
+
+impl_primitive! { u8 }
+
+macro_rules! test {
+    ($ty:ty) => { compile_error!("oh no"); };
+    (impl &) => {};
+}
+
+test!(impl &);
+
+fn main() {}
diff --git a/tests/ui/parser/bad-struct-following-where.rs b/tests/ui/parser/bad-struct-following-where.rs
new file mode 100644
index 000000000..823880b1b
--- /dev/null
+++ b/tests/ui/parser/bad-struct-following-where.rs
@@ -0,0 +1,2 @@
+struct A where T: Sized !
+//~^ ERROR expected `{` after struct name, found
diff --git a/tests/ui/parser/bad-struct-following-where.stderr b/tests/ui/parser/bad-struct-following-where.stderr
new file mode 100644
index 000000000..bb79776dc
--- /dev/null
+++ b/tests/ui/parser/bad-struct-following-where.stderr
@@ -0,0 +1,8 @@
+error: expected `{` after struct name, found `!`
+  --> $DIR/bad-struct-following-where.rs:1:25
+   |
+LL | struct A where T: Sized !
+   |                         ^ expected `{` after struct name
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/bad-value-ident-false.rs b/tests/ui/parser/bad-value-ident-false.rs
new file mode 100644
index 000000000..4645ab4a7
--- /dev/null
+++ b/tests/ui/parser/bad-value-ident-false.rs
@@ -0,0 +1,2 @@
+fn false() { } //~ ERROR expected identifier, found keyword `false`
+fn main() { }
diff --git a/tests/ui/parser/bad-value-ident-false.stderr b/tests/ui/parser/bad-value-ident-false.stderr
new file mode 100644
index 000000000..30c05ecf3
--- /dev/null
+++ b/tests/ui/parser/bad-value-ident-false.stderr
@@ -0,0 +1,13 @@
+error: expected identifier, found keyword `false`
+  --> $DIR/bad-value-ident-false.rs:1:4
+   |
+LL | fn false() { }
+   |    ^^^^^ expected identifier, found keyword
+   |
+help: escape `false` to use it as an identifier
+   |
+LL | fn r#false() { }
+   |    ++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/bad-value-ident-true.rs b/tests/ui/parser/bad-value-ident-true.rs
new file mode 100644
index 000000000..0f64266d3
--- /dev/null
+++ b/tests/ui/parser/bad-value-ident-true.rs
@@ -0,0 +1,2 @@
+fn true() { } //~ ERROR expected identifier, found keyword `true`
+fn main() { }
diff --git a/tests/ui/parser/bad-value-ident-true.stderr b/tests/ui/parser/bad-value-ident-true.stderr
new file mode 100644
index 000000000..74137fa70
--- /dev/null
+++ b/tests/ui/parser/bad-value-ident-true.stderr
@@ -0,0 +1,13 @@
+error: expected identifier, found keyword `true`
+  --> $DIR/bad-value-ident-true.rs:1:4
+   |
+LL | fn true() { }
+   |    ^^^^ expected identifier, found keyword
+   |
+help: escape `true` to use it as an identifier
+   |
+LL | fn r#true() { }
+   |    ++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/bare-struct-body.rs b/tests/ui/parser/bare-struct-body.rs
new file mode 100644
index 000000000..a557e861d
--- /dev/null
+++ b/tests/ui/parser/bare-struct-body.rs
@@ -0,0 +1,15 @@
+struct Foo {
+    val: (),
+}
+
+fn foo() -> Foo { //~ ERROR struct literal body without path
+    val: (),
+}
+
+fn main() {
+    let x = foo();
+    x.val == 42; //~ ERROR mismatched types
+    let x = { //~ ERROR struct literal body without path
+        val: (),
+    };
+}
diff --git a/tests/ui/parser/bare-struct-body.stderr b/tests/ui/parser/bare-struct-body.stderr
new file mode 100644
index 000000000..7d17ea596
--- /dev/null
+++ b/tests/ui/parser/bare-struct-body.stderr
@@ -0,0 +1,43 @@
+error: struct literal body without path
+  --> $DIR/bare-struct-body.rs:5:17
+   |
+LL |   fn foo() -> Foo {
+   |  _________________^
+LL | |     val: (),
+LL | | }
+   | |_^
+   |
+help: you might have forgotten to add the struct literal inside the block
+   |
+LL ~ fn foo() -> Foo { SomeStruct {
+LL |     val: (),
+LL ~ } }
+   |
+
+error: struct literal body without path
+  --> $DIR/bare-struct-body.rs:12:13
+   |
+LL |       let x = {
+   |  _____________^
+LL | |         val: (),
+LL | |     };
+   | |_____^
+   |
+help: you might have forgotten to add the struct literal inside the block
+   |
+LL ~     let x = { SomeStruct {
+LL |         val: (),
+LL ~     } };
+   |
+
+error[E0308]: mismatched types
+  --> $DIR/bare-struct-body.rs:11:14
+   |
+LL |     x.val == 42;
+   |     -----    ^^ expected `()`, found integer
+   |     |
+   |     expected because this is `()`
+
+error: aborting due to 3 previous errors
+
+For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/parser/bastion-of-the-turbofish.rs b/tests/ui/parser/bastion-of-the-turbofish.rs
new file mode 100644
index 000000000..e12857008
--- /dev/null
+++ b/tests/ui/parser/bastion-of-the-turbofish.rs
@@ -0,0 +1,43 @@
+// check-pass
+
+// Bastion of the Turbofish
+// ------------------------
+// Beware travellers, lest you venture into waters callous and unforgiving,
+// where hope must be abandoned, ere it is cruelly torn from you. For here
+// stands the bastion of the Turbofish: an impenetrable fortress holding
+// unshaking against those who would dare suggest the supererogation of the
+// Turbofish.
+//
+// Once I was young and foolish and had the impudence to imagine that I could
+// shake free from the coils by which that creature had us tightly bound. I
+// dared to suggest that there was a better way: a brighter future, in which
+// Rustaceans both new and old could be rid of that vile beast. But alas! In
+// my foolhardiness my ignorance was unveiled and my dreams were dashed
+// unforgivingly against the rock of syntactic ambiguity.
+//
+// This humble program, small and insignificant though it might seem,
+// demonstrates that to which we had previously cast a blind eye: an ambiguity
+// in permitting generic arguments to be provided without the consent of the
+// Great Turbofish. Should you be so naïve as to try to revolt against its
+// mighty clutches, here shall its wrath be indomitably displayed. This
+// program must pass for all eternity: forever watched by the guardian angel
+// which gave this beast its name, and stands fundamentally at odds with the
+// impetuous rebellion against the Turbofish.
+//
+// My heart aches in sorrow, for I know I am defeated. Let this be a warning
+// to all those who come after: for they too must overcome the impassible
+// hurdle of defeating the great beast, championed by a resolute winged
+// guardian.
+//
+// Here stands the Bastion of the Turbofish, a memorial to Anna Harren,
+// Guardian Angel of these Hallowed Grounds. <3
+
+// See https://github.com/rust-lang/rust/pull/53562
+// and https://github.com/rust-lang/rfcs/pull/2527
+// and https://twitter.com/garblefart/status/1393236602856611843
+// for context.
+
+fn main() {
+    let (the, guardian, stands, resolute) = ("the", "Turbofish", "remains", "undefeated");
+    let _: (bool, bool) = (the<guardian, stands>(resolute));
+}
diff --git a/tests/ui/parser/better-expected.rs b/tests/ui/parser/better-expected.rs
new file mode 100644
index 000000000..16b61caa4
--- /dev/null
+++ b/tests/ui/parser/better-expected.rs
@@ -0,0 +1,3 @@
+fn main() {
+    let x: [isize 3]; //~ ERROR expected one of `!`, `(`, `+`, `::`, `;`, `<`, or `]`, found `3`
+}
diff --git a/tests/ui/parser/better-expected.stderr b/tests/ui/parser/better-expected.stderr
new file mode 100644
index 000000000..21bf8d19a
--- /dev/null
+++ b/tests/ui/parser/better-expected.stderr
@@ -0,0 +1,10 @@
+error: expected one of `!`, `(`, `+`, `::`, `;`, `<`, or `]`, found `3`
+  --> $DIR/better-expected.rs:2:19
+   |
+LL |     let x: [isize 3];
+   |         -         ^ expected one of 7 possible tokens
+   |         |
+   |         while parsing the type for `x`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/bind-struct-early-modifiers.rs b/tests/ui/parser/bind-struct-early-modifiers.rs
new file mode 100644
index 000000000..c4b1937de
--- /dev/null
+++ b/tests/ui/parser/bind-struct-early-modifiers.rs
@@ -0,0 +1,7 @@
+fn main() {
+    struct Foo { x: isize }
+    match (Foo { x: 10 }) {
+        Foo { ref x: ref x } => {}, //~ ERROR expected `,`
+        _ => {}
+    }
+}
diff --git a/tests/ui/parser/bind-struct-early-modifiers.stderr b/tests/ui/parser/bind-struct-early-modifiers.stderr
new file mode 100644
index 000000000..b35762a88
--- /dev/null
+++ b/tests/ui/parser/bind-struct-early-modifiers.stderr
@@ -0,0 +1,10 @@
+error: expected `,`
+  --> $DIR/bind-struct-early-modifiers.rs:4:20
+   |
+LL |         Foo { ref x: ref x } => {},
+   |         ---        ^
+   |         |
+   |         while parsing the fields for this pattern
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/block-no-opening-brace.rs b/tests/ui/parser/block-no-opening-brace.rs
new file mode 100644
index 000000000..8a6599488
--- /dev/null
+++ b/tests/ui/parser/block-no-opening-brace.rs
@@ -0,0 +1,31 @@
+// edition:2018
+
+#![feature(try_blocks)]
+
+fn main() {}
+
+fn f1() {
+    loop
+        let x = 0; //~ ERROR expected `{`, found keyword `let`
+        drop(0);
+    }
+
+fn f2() {
+    while true
+        let x = 0; //~ ERROR expected `{`, found keyword `let`
+    }
+
+fn f3() {
+    for x in 0..1
+        let x = 0; //~ ERROR expected `{`, found keyword `let`
+    }
+
+fn f4() {
+    try //~ ERROR expected expression, found reserved keyword `try`
+        let x = 0;
+    }
+
+fn f5() {
+    async
+        let x = 0; //~ ERROR expected one of `move`, `|`, or `||`, found keyword `let`
+    }
diff --git a/tests/ui/parser/block-no-opening-brace.stderr b/tests/ui/parser/block-no-opening-brace.stderr
new file mode 100644
index 000000000..f232f480c
--- /dev/null
+++ b/tests/ui/parser/block-no-opening-brace.stderr
@@ -0,0 +1,55 @@
+error: expected `{`, found keyword `let`
+  --> $DIR/block-no-opening-brace.rs:9:9
+   |
+LL |     loop
+   |     ---- while parsing this `loop` expression
+LL |         let x = 0;
+   |         ^^^ expected `{`
+   |
+help: try placing this code inside a block
+   |
+LL |         { let x = 0; }
+   |         +            +
+
+error: expected `{`, found keyword `let`
+  --> $DIR/block-no-opening-brace.rs:15:9
+   |
+LL |     while true
+   |     ----- ---- this `while` condition successfully parsed
+   |     |
+   |     while parsing the body of this `while` expression
+LL |         let x = 0;
+   |         ^^^ expected `{`
+   |
+help: try placing this code inside a block
+   |
+LL |         { let x = 0; }
+   |         +            +
+
+error: expected `{`, found keyword `let`
+  --> $DIR/block-no-opening-brace.rs:20:9
+   |
+LL |         let x = 0;
+   |         ^^^ expected `{`
+   |
+help: try placing this code inside a block
+   |
+LL |         { let x = 0; }
+   |         +            +
+
+error: expected expression, found reserved keyword `try`
+  --> $DIR/block-no-opening-brace.rs:24:5
+   |
+LL |     try
+   |     ^^^ expected expression
+
+error: expected one of `move`, `|`, or `||`, found keyword `let`
+  --> $DIR/block-no-opening-brace.rs:30:9
+   |
+LL |     async
+   |          - expected one of `move`, `|`, or `||`
+LL |         let x = 0;
+   |         ^^^ unexpected token
+
+error: aborting due to 5 previous errors
+
diff --git a/tests/ui/parser/bound-single-question-mark.rs b/tests/ui/parser/bound-single-question-mark.rs
new file mode 100644
index 000000000..64d702d14
--- /dev/null
+++ b/tests/ui/parser/bound-single-question-mark.rs
@@ -0,0 +1 @@
+fn f<T: ?>() {} //~ ERROR expected identifier, found `>`
diff --git a/tests/ui/parser/bound-single-question-mark.stderr b/tests/ui/parser/bound-single-question-mark.stderr
new file mode 100644
index 000000000..82937a517
--- /dev/null
+++ b/tests/ui/parser/bound-single-question-mark.stderr
@@ -0,0 +1,8 @@
+error: expected identifier, found `>`
+  --> $DIR/bound-single-question-mark.rs:1:10
+   |
+LL | fn f<T: ?>() {}
+   |          ^ expected identifier
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/bounds-lifetime-1.rs b/tests/ui/parser/bounds-lifetime-1.rs
new file mode 100644
index 000000000..e458f644c
--- /dev/null
+++ b/tests/ui/parser/bounds-lifetime-1.rs
@@ -0,0 +1,3 @@
+type A = for<'a 'b> fn(); //~ ERROR expected one of `,`, `:`, or `>`, found `'b`
+
+fn main() {}
diff --git a/tests/ui/parser/bounds-lifetime-1.stderr b/tests/ui/parser/bounds-lifetime-1.stderr
new file mode 100644
index 000000000..000e84f63
--- /dev/null
+++ b/tests/ui/parser/bounds-lifetime-1.stderr
@@ -0,0 +1,8 @@
+error: expected one of `,`, `:`, or `>`, found `'b`
+  --> $DIR/bounds-lifetime-1.rs:1:17
+   |
+LL | type A = for<'a 'b> fn();
+   |                 ^^ expected one of `,`, `:`, or `>`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/bounds-lifetime-2.rs b/tests/ui/parser/bounds-lifetime-2.rs
new file mode 100644
index 000000000..f184107bb
--- /dev/null
+++ b/tests/ui/parser/bounds-lifetime-2.rs
@@ -0,0 +1,3 @@
+type A = for<'a + 'b> fn(); //~ ERROR expected one of `,`, `:`, or `>`, found `+`
+
+fn main() {}
diff --git a/tests/ui/parser/bounds-lifetime-2.stderr b/tests/ui/parser/bounds-lifetime-2.stderr
new file mode 100644
index 000000000..dd3e69c11
--- /dev/null
+++ b/tests/ui/parser/bounds-lifetime-2.stderr
@@ -0,0 +1,8 @@
+error: expected one of `,`, `:`, or `>`, found `+`
+  --> $DIR/bounds-lifetime-2.rs:1:17
+   |
+LL | type A = for<'a + 'b> fn();
+   |                 ^ expected one of `,`, `:`, or `>`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/bounds-lifetime-where-1.rs b/tests/ui/parser/bounds-lifetime-where-1.rs
new file mode 100644
index 000000000..f1a002a9f
--- /dev/null
+++ b/tests/ui/parser/bounds-lifetime-where-1.rs
@@ -0,0 +1,3 @@
+type A where 'a; //~ ERROR expected `:`, found `;`
+
+fn main() {}
diff --git a/tests/ui/parser/bounds-lifetime-where-1.stderr b/tests/ui/parser/bounds-lifetime-where-1.stderr
new file mode 100644
index 000000000..b6bd86693
--- /dev/null
+++ b/tests/ui/parser/bounds-lifetime-where-1.stderr
@@ -0,0 +1,8 @@
+error: expected `:`, found `;`
+  --> $DIR/bounds-lifetime-where-1.rs:1:16
+   |
+LL | type A where 'a;
+   |                ^ expected `:`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/bounds-lifetime-where.rs b/tests/ui/parser/bounds-lifetime-where.rs
new file mode 100644
index 000000000..7ff75233d
--- /dev/null
+++ b/tests/ui/parser/bounds-lifetime-where.rs
@@ -0,0 +1,10 @@
+type A where 'a: 'b + 'c = u8; // OK
+type A where 'a: 'b, = u8; // OK
+type A where 'a: = u8; // OK
+type A where 'a:, = u8; // OK
+type A where 'a: 'b + 'c = u8; // OK
+type A where = u8; // OK
+type A where 'a: 'b + = u8; // OK
+type A where , = u8; //~ ERROR expected one of `;`, `=`, `where`, lifetime, or type, found `,`
+
+fn main() {}
diff --git a/tests/ui/parser/bounds-lifetime-where.stderr b/tests/ui/parser/bounds-lifetime-where.stderr
new file mode 100644
index 000000000..785a1fb67
--- /dev/null
+++ b/tests/ui/parser/bounds-lifetime-where.stderr
@@ -0,0 +1,8 @@
+error: expected one of `;`, `=`, `where`, lifetime, or type, found `,`
+  --> $DIR/bounds-lifetime-where.rs:8:14
+   |
+LL | type A where , = u8;
+   |              ^ expected one of `;`, `=`, `where`, lifetime, or type
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/bounds-lifetime.rs b/tests/ui/parser/bounds-lifetime.rs
new file mode 100644
index 000000000..c9251ac53
--- /dev/null
+++ b/tests/ui/parser/bounds-lifetime.rs
@@ -0,0 +1,11 @@
+type A = for<'a:> fn(); // OK
+type A = for<'a:,> fn(); // OK
+type A = for<'a> fn(); // OK
+type A = for<> fn(); // OK
+type A = for<'a: 'b + 'c> fn(); // OK (rejected later by ast_validation)
+type A = for<'a: 'b,> fn(); // OK(rejected later by ast_validation)
+type A = for<'a: 'b +> fn(); // OK (rejected later by ast_validation)
+type A = for<'a, T> fn(); // OK (rejected later by ast_validation)
+type A = for<,> fn(); //~ ERROR expected one of `#`, `>`, `const`, identifier, or lifetime
+
+fn main() {}
diff --git a/tests/ui/parser/bounds-lifetime.stderr b/tests/ui/parser/bounds-lifetime.stderr
new file mode 100644
index 000000000..e47a21d89
--- /dev/null
+++ b/tests/ui/parser/bounds-lifetime.stderr
@@ -0,0 +1,8 @@
+error: expected one of `#`, `>`, `const`, identifier, or lifetime, found `,`
+  --> $DIR/bounds-lifetime.rs:9:14
+   |
+LL | type A = for<,> fn();
+   |              ^ expected one of `#`, `>`, `const`, identifier, or lifetime
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/bounds-obj-parens.rs b/tests/ui/parser/bounds-obj-parens.rs
new file mode 100644
index 000000000..8c446d27d
--- /dev/null
+++ b/tests/ui/parser/bounds-obj-parens.rs
@@ -0,0 +1,7 @@
+// check-pass
+
+#![allow(bare_trait_objects)]
+
+type A = Box<(Fn(u8) -> u8) + 'static + Send + Sync>; // OK (but see #39318)
+
+fn main() {}
diff --git a/tests/ui/parser/bounds-type-where.rs b/tests/ui/parser/bounds-type-where.rs
new file mode 100644
index 000000000..2520ecb29
--- /dev/null
+++ b/tests/ui/parser/bounds-type-where.rs
@@ -0,0 +1,11 @@
+type A where for<'a> for<'b> Trait1 + ?Trait2: 'a + Trait = u8; // OK
+type A where T: Trait, = u8; // OK
+type A where T: = u8; // OK
+type A where T:, = u8; // OK
+type A where T: Trait + Trait = u8; // OK
+type A where = u8; // OK
+type A where T: Trait + = u8; // OK
+type A where T, = u8;
+//~^ ERROR expected one of `!`, `(`, `+`, `::`, `:`, `<`, `==`, or `=`, found `,`
+
+fn main() {}
diff --git a/tests/ui/parser/bounds-type-where.stderr b/tests/ui/parser/bounds-type-where.stderr
new file mode 100644
index 000000000..5636ee75c
--- /dev/null
+++ b/tests/ui/parser/bounds-type-where.stderr
@@ -0,0 +1,8 @@
+error: expected one of `!`, `(`, `+`, `::`, `:`, `<`, `==`, or `=`, found `,`
+  --> $DIR/bounds-type-where.rs:8:15
+   |
+LL | type A where T, = u8;
+   |               ^ expected one of 8 possible tokens
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/bounds-type.rs b/tests/ui/parser/bounds-type.rs
new file mode 100644
index 000000000..4ae4549ea
--- /dev/null
+++ b/tests/ui/parser/bounds-type.rs
@@ -0,0 +1,18 @@
+// compile-flags: -Z parse-only
+
+struct S<
+    T: 'a + Tr, // OK
+    T: Tr + 'a, // OK
+    T: 'a, // OK
+    T:, // OK
+    T: ?for<'a> Trait, // OK
+    T: Tr +, // OK
+    T: ?'a, //~ ERROR `?` may only modify trait bounds, not lifetime bounds
+
+    T: ~const Tr, // OK
+    T: ~const ?Tr, // OK
+    T: ~const Tr + 'a, // OK
+    T: ~const 'a, //~ ERROR `~const` may only modify trait bounds, not lifetime bounds
+>;
+
+fn main() {}
diff --git a/tests/ui/parser/bounds-type.stderr b/tests/ui/parser/bounds-type.stderr
new file mode 100644
index 000000000..005bc1e54
--- /dev/null
+++ b/tests/ui/parser/bounds-type.stderr
@@ -0,0 +1,14 @@
+error: `?` may only modify trait bounds, not lifetime bounds
+  --> $DIR/bounds-type.rs:10:8
+   |
+LL |     T: ?'a,
+   |        ^
+
+error: `~const` may only modify trait bounds, not lifetime bounds
+  --> $DIR/bounds-type.rs:15:8
+   |
+LL |     T: ~const 'a,
+   |        ^^^^^^
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/byte-literals.rs b/tests/ui/parser/byte-literals.rs
new file mode 100644
index 000000000..896dc1a1a
--- /dev/null
+++ b/tests/ui/parser/byte-literals.rs
@@ -0,0 +1,12 @@
+// ignore-tidy-tab
+
+static FOO: u8 = b'\f';  //~ ERROR unknown byte escape
+
+pub fn main() {
+    b'\f';  //~ ERROR unknown byte escape
+    b'\x0Z';  //~ ERROR invalid character in numeric character escape: `Z`
+    b'	';  //~ ERROR byte constant must be escaped
+    b''';  //~ ERROR byte constant must be escaped
+    b'é';  //~ ERROR non-ASCII character in byte literal
+    b'a  //~ ERROR unterminated byte constant [E0763]
+}
diff --git a/tests/ui/parser/byte-literals.stderr b/tests/ui/parser/byte-literals.stderr
new file mode 100644
index 000000000..efa55ae05
--- /dev/null
+++ b/tests/ui/parser/byte-literals.stderr
@@ -0,0 +1,54 @@
+error: unknown byte escape: `f`
+  --> $DIR/byte-literals.rs:3:21
+   |
+LL | static FOO: u8 = b'\f';
+   |                     ^ unknown byte escape
+   |
+   = help: for more information, visit <https://static.rust-lang.org/doc/master/reference.html#literals>
+
+error: unknown byte escape: `f`
+  --> $DIR/byte-literals.rs:6:8
+   |
+LL |     b'\f';
+   |        ^ unknown byte escape
+   |
+   = help: for more information, visit <https://static.rust-lang.org/doc/master/reference.html#literals>
+
+error: invalid character in numeric character escape: `Z`
+  --> $DIR/byte-literals.rs:7:10
+   |
+LL |     b'\x0Z';
+   |          ^ invalid character in numeric character escape
+
+error: byte constant must be escaped: `\t`
+  --> $DIR/byte-literals.rs:8:7
+   |
+LL |     b'    ';
+   |       ^^^^ help: escape the character: `\t`
+
+error: byte constant must be escaped: `'`
+  --> $DIR/byte-literals.rs:9:7
+   |
+LL |     b''';
+   |       ^ help: escape the character: `\'`
+
+error: non-ASCII character in byte literal
+  --> $DIR/byte-literals.rs:10:7
+   |
+LL |     b'é';
+   |       ^ must be ASCII
+   |
+help: if you meant to use the unicode code point for 'é', use a \xHH escape
+   |
+LL |     b'\xE9';
+   |       ~~~~
+
+error[E0763]: unterminated byte constant
+  --> $DIR/byte-literals.rs:11:6
+   |
+LL |     b'a
+   |      ^^^^
+
+error: aborting due to 7 previous errors
+
+For more information about this error, try `rustc --explain E0763`.
diff --git a/tests/ui/parser/byte-string-literals.rs b/tests/ui/parser/byte-string-literals.rs
new file mode 100644
index 000000000..30a4f50c4
--- /dev/null
+++ b/tests/ui/parser/byte-string-literals.rs
@@ -0,0 +1,9 @@
+static FOO: &'static [u8] = b"\f";  //~ ERROR unknown byte escape
+
+pub fn main() {
+    b"\f";  //~ ERROR unknown byte escape
+    b"\x0Z";  //~ ERROR invalid character in numeric character escape: `Z`
+    b"é";  //~ ERROR non-ASCII character in byte string literal
+    br##"é"##;  //~ ERROR non-ASCII character in raw byte string literal
+    b"a  //~ ERROR unterminated double quote byte string
+}
diff --git a/tests/ui/parser/byte-string-literals.stderr b/tests/ui/parser/byte-string-literals.stderr
new file mode 100644
index 000000000..5b96cc3d1
--- /dev/null
+++ b/tests/ui/parser/byte-string-literals.stderr
@@ -0,0 +1,50 @@
+error: unknown byte escape: `f`
+  --> $DIR/byte-string-literals.rs:1:32
+   |
+LL | static FOO: &'static [u8] = b"\f";
+   |                                ^ unknown byte escape
+   |
+   = help: for more information, visit <https://static.rust-lang.org/doc/master/reference.html#literals>
+
+error: unknown byte escape: `f`
+  --> $DIR/byte-string-literals.rs:4:8
+   |
+LL |     b"\f";
+   |        ^ unknown byte escape
+   |
+   = help: for more information, visit <https://static.rust-lang.org/doc/master/reference.html#literals>
+
+error: invalid character in numeric character escape: `Z`
+  --> $DIR/byte-string-literals.rs:5:10
+   |
+LL |     b"\x0Z";
+   |          ^ invalid character in numeric character escape
+
+error: non-ASCII character in byte string literal
+  --> $DIR/byte-string-literals.rs:6:7
+   |
+LL |     b"é";
+   |       ^ must be ASCII
+   |
+help: if you meant to use the unicode code point for 'é', use a \xHH escape
+   |
+LL |     b"\xE9";
+   |       ~~~~
+
+error: non-ASCII character in raw byte string literal
+  --> $DIR/byte-string-literals.rs:7:10
+   |
+LL |     br##"é"##;
+   |          ^ must be ASCII
+
+error[E0766]: unterminated double quote byte string
+  --> $DIR/byte-string-literals.rs:8:6
+   |
+LL |       b"a
+   |  ______^
+LL | | }
+   | |__^
+
+error: aborting due to 6 previous errors
+
+For more information about this error, try `rustc --explain E0766`.
diff --git a/tests/ui/parser/can-begin-expr-check.rs b/tests/ui/parser/can-begin-expr-check.rs
new file mode 100644
index 000000000..e5be8de79
--- /dev/null
+++ b/tests/ui/parser/can-begin-expr-check.rs
@@ -0,0 +1,20 @@
+pub fn main() {
+
+    return;
+    return ();
+    return as ();
+    return return as ();
+    return return return;
+
+    return if true {
+        ()
+    } else {
+        ()
+    };
+
+    loop {
+        return break as ();
+    }
+
+    return enum; //~ ERROR expected one of `;`, `}`, or an operator, found keyword `enum`
+}
diff --git a/tests/ui/parser/can-begin-expr-check.stderr b/tests/ui/parser/can-begin-expr-check.stderr
new file mode 100644
index 000000000..9569ababa
--- /dev/null
+++ b/tests/ui/parser/can-begin-expr-check.stderr
@@ -0,0 +1,8 @@
+error: expected one of `;`, `}`, or an operator, found keyword `enum`
+  --> $DIR/can-begin-expr-check.rs:19:12
+   |
+LL |     return enum;
+   |            ^^^^ expected one of `;`, `}`, or an operator
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/chained-comparison-suggestion.rs b/tests/ui/parser/chained-comparison-suggestion.rs
new file mode 100644
index 000000000..bbd46082c
--- /dev/null
+++ b/tests/ui/parser/chained-comparison-suggestion.rs
@@ -0,0 +1,53 @@
+// Check that we get nice suggestions when attempting a chained comparison.
+
+fn comp1() {
+    1 < 2 <= 3; //~ ERROR comparison operators cannot be chained
+    //~^ ERROR mismatched types
+}
+
+fn comp2() {
+    1 < 2 < 3; //~ ERROR comparison operators cannot be chained
+}
+
+fn comp3() {
+    1 <= 2 < 3; //~ ERROR comparison operators cannot be chained
+    //~^ ERROR mismatched types
+}
+
+fn comp4() {
+    1 <= 2 <= 3; //~ ERROR comparison operators cannot be chained
+    //~^ ERROR mismatched types
+}
+
+fn comp5() {
+    1 > 2 >= 3; //~ ERROR comparison operators cannot be chained
+    //~^ ERROR mismatched types
+}
+
+fn comp6() {
+    1 > 2 > 3; //~ ERROR comparison operators cannot be chained
+}
+
+fn comp7() {
+    1 >= 2 > 3; //~ ERROR comparison operators cannot be chained
+}
+
+fn comp8() {
+    1 >= 2 >= 3; //~ ERROR comparison operators cannot be chained
+    //~^ ERROR mismatched types
+}
+
+fn comp9() {
+    1 == 2 < 3; //~ ERROR comparison operators cannot be chained
+}
+
+fn comp10() {
+    1 > 2 == false; //~ ERROR comparison operators cannot be chained
+}
+
+fn comp11() {
+    1 == 2 == 3; //~ ERROR comparison operators cannot be chained
+    //~^ ERROR mismatched types
+}
+
+fn main() {}
diff --git a/tests/ui/parser/chained-comparison-suggestion.stderr b/tests/ui/parser/chained-comparison-suggestion.stderr
new file mode 100644
index 000000000..ae243816d
--- /dev/null
+++ b/tests/ui/parser/chained-comparison-suggestion.stderr
@@ -0,0 +1,172 @@
+error: comparison operators cannot be chained
+  --> $DIR/chained-comparison-suggestion.rs:4:7
+   |
+LL |     1 < 2 <= 3;
+   |       ^   ^^
+   |
+help: split the comparison into two
+   |
+LL |     1 < 2 && 2 <= 3;
+   |           ++++
+
+error: comparison operators cannot be chained
+  --> $DIR/chained-comparison-suggestion.rs:9:7
+   |
+LL |     1 < 2 < 3;
+   |       ^   ^
+   |
+help: split the comparison into two
+   |
+LL |     1 < 2 && 2 < 3;
+   |           ++++
+
+error: comparison operators cannot be chained
+  --> $DIR/chained-comparison-suggestion.rs:13:7
+   |
+LL |     1 <= 2 < 3;
+   |       ^^   ^
+   |
+help: split the comparison into two
+   |
+LL |     1 <= 2 && 2 < 3;
+   |            ++++
+
+error: comparison operators cannot be chained
+  --> $DIR/chained-comparison-suggestion.rs:18:7
+   |
+LL |     1 <= 2 <= 3;
+   |       ^^   ^^
+   |
+help: split the comparison into two
+   |
+LL |     1 <= 2 && 2 <= 3;
+   |            ++++
+
+error: comparison operators cannot be chained
+  --> $DIR/chained-comparison-suggestion.rs:23:7
+   |
+LL |     1 > 2 >= 3;
+   |       ^   ^^
+   |
+help: split the comparison into two
+   |
+LL |     1 > 2 && 2 >= 3;
+   |           ++++
+
+error: comparison operators cannot be chained
+  --> $DIR/chained-comparison-suggestion.rs:28:7
+   |
+LL |     1 > 2 > 3;
+   |       ^   ^
+   |
+help: split the comparison into two
+   |
+LL |     1 > 2 && 2 > 3;
+   |           ++++
+
+error: comparison operators cannot be chained
+  --> $DIR/chained-comparison-suggestion.rs:32:7
+   |
+LL |     1 >= 2 > 3;
+   |       ^^   ^
+   |
+help: split the comparison into two
+   |
+LL |     1 >= 2 && 2 > 3;
+   |            ++++
+
+error: comparison operators cannot be chained
+  --> $DIR/chained-comparison-suggestion.rs:36:7
+   |
+LL |     1 >= 2 >= 3;
+   |       ^^   ^^
+   |
+help: split the comparison into two
+   |
+LL |     1 >= 2 && 2 >= 3;
+   |            ++++
+
+error: comparison operators cannot be chained
+  --> $DIR/chained-comparison-suggestion.rs:41:7
+   |
+LL |     1 == 2 < 3;
+   |       ^^   ^
+   |
+help: parenthesize the comparison
+   |
+LL |     1 == (2 < 3);
+   |          +     +
+
+error: comparison operators cannot be chained
+  --> $DIR/chained-comparison-suggestion.rs:45:7
+   |
+LL |     1 > 2 == false;
+   |       ^   ^^
+   |
+help: parenthesize the comparison
+   |
+LL |     (1 > 2) == false;
+   |     +     +
+
+error: comparison operators cannot be chained
+  --> $DIR/chained-comparison-suggestion.rs:49:7
+   |
+LL |     1 == 2 == 3;
+   |       ^^   ^^
+   |
+help: split the comparison into two
+   |
+LL |     1 == 2 && 2 == 3;
+   |            ++++
+
+error[E0308]: mismatched types
+  --> $DIR/chained-comparison-suggestion.rs:4:14
+   |
+LL |     1 < 2 <= 3;
+   |     -----    ^ expected `bool`, found integer
+   |     |
+   |     expected because this is `bool`
+
+error[E0308]: mismatched types
+  --> $DIR/chained-comparison-suggestion.rs:13:14
+   |
+LL |     1 <= 2 < 3;
+   |     ------   ^ expected `bool`, found integer
+   |     |
+   |     expected because this is `bool`
+
+error[E0308]: mismatched types
+  --> $DIR/chained-comparison-suggestion.rs:18:15
+   |
+LL |     1 <= 2 <= 3;
+   |     ------    ^ expected `bool`, found integer
+   |     |
+   |     expected because this is `bool`
+
+error[E0308]: mismatched types
+  --> $DIR/chained-comparison-suggestion.rs:23:14
+   |
+LL |     1 > 2 >= 3;
+   |     -----    ^ expected `bool`, found integer
+   |     |
+   |     expected because this is `bool`
+
+error[E0308]: mismatched types
+  --> $DIR/chained-comparison-suggestion.rs:36:15
+   |
+LL |     1 >= 2 >= 3;
+   |     ------    ^ expected `bool`, found integer
+   |     |
+   |     expected because this is `bool`
+
+error[E0308]: mismatched types
+  --> $DIR/chained-comparison-suggestion.rs:49:15
+   |
+LL |     1 == 2 == 3;
+   |     ------    ^ expected `bool`, found integer
+   |     |
+   |     expected because this is `bool`
+
+error: aborting due to 17 previous errors
+
+For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/parser/char/whitespace-character-literal.rs b/tests/ui/parser/char/whitespace-character-literal.rs
new file mode 100644
index 000000000..de5e09204
--- /dev/null
+++ b/tests/ui/parser/char/whitespace-character-literal.rs
@@ -0,0 +1,10 @@
+// This tests that the error generated when a character literal has multiple
+// characters in it contains a note about non-printing characters.
+
+fn main() {
+    let _hair_space_around = ' x​';
+    //~^ ERROR: character literal may only contain one codepoint
+    //~| NOTE: there are non-printing characters, the full sequence is `\u{200a}x\u{200b}`
+    //~| HELP: consider removing the non-printing characters
+    //~| SUGGESTION: x
+}
diff --git a/tests/ui/parser/char/whitespace-character-literal.stderr b/tests/ui/parser/char/whitespace-character-literal.stderr
new file mode 100644
index 000000000..d73de41a8
--- /dev/null
+++ b/tests/ui/parser/char/whitespace-character-literal.stderr
@@ -0,0 +1,16 @@
+error: character literal may only contain one codepoint
+  --> $DIR/whitespace-character-literal.rs:5:30
+   |
+LL |     let _hair_space_around = ' x​';
+   |                              ^--^
+   |                               |
+   |                               help: consider removing the non-printing characters: `x`
+   |
+note: there are non-printing characters, the full sequence is `\u{200a}x\u{200b}`
+  --> $DIR/whitespace-character-literal.rs:5:31
+   |
+LL |     let _hair_space_around = ' x​';
+   |                               ^^
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/circular_modules_hello.rs b/tests/ui/parser/circular_modules_hello.rs
new file mode 100644
index 000000000..6968ca97b
--- /dev/null
+++ b/tests/ui/parser/circular_modules_hello.rs
@@ -0,0 +1,8 @@
+// ignore-test: this is an auxiliary file for circular-modules-main.rs
+
+#[path = "circular_modules_main.rs"]
+mod circular_modules_main;
+
+pub fn say_hello() {
+    println!("{}", circular_modules_main::hi_str());
+}
diff --git a/tests/ui/parser/circular_modules_main.rs b/tests/ui/parser/circular_modules_main.rs
new file mode 100644
index 000000000..d4b47efe6
--- /dev/null
+++ b/tests/ui/parser/circular_modules_main.rs
@@ -0,0 +1,12 @@
+// error-pattern: circular modules
+
+#[path = "circular_modules_hello.rs"]
+mod circular_modules_hello;
+
+pub fn hi_str() -> String {
+    "Hi!".to_string()
+}
+
+fn main() {
+    circular_modules_hello::say_hello();
+}
diff --git a/tests/ui/parser/circular_modules_main.stderr b/tests/ui/parser/circular_modules_main.stderr
new file mode 100644
index 000000000..1094def60
--- /dev/null
+++ b/tests/ui/parser/circular_modules_main.stderr
@@ -0,0 +1,25 @@
+error: circular modules: $DIR/circular_modules_main.rs -> $DIR/circular_modules_hello.rs -> $DIR/circular_modules_main.rs
+  --> $DIR/circular_modules_hello.rs:4:1
+   |
+LL | mod circular_modules_main;
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error[E0425]: cannot find function `hi_str` in module `circular_modules_main`
+  --> $DIR/circular_modules_hello.rs:7:43
+   |
+LL |     println!("{}", circular_modules_main::hi_str());
+   |                                           ^^^^^^ not found in `circular_modules_main`
+   |
+help: consider importing this function
+   |
+LL | use hi_str;
+   |
+help: if you import `hi_str`, refer to it directly
+   |
+LL -     println!("{}", circular_modules_main::hi_str());
+LL +     println!("{}", hi_str());
+   |
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0425`.
diff --git a/tests/ui/parser/class-implements-bad-trait.rs b/tests/ui/parser/class-implements-bad-trait.rs
new file mode 100644
index 000000000..f2f85d026
--- /dev/null
+++ b/tests/ui/parser/class-implements-bad-trait.rs
@@ -0,0 +1,9 @@
+// error-pattern:nonexistent
+class cat : nonexistent {
+  let meows: usize;
+  new(in_x : usize) { self.meows = in_x; }
+}
+
+fn main() {
+  let nyan = cat(0);
+}
diff --git a/tests/ui/parser/class-implements-bad-trait.stderr b/tests/ui/parser/class-implements-bad-trait.stderr
new file mode 100644
index 000000000..3a4dea95d
--- /dev/null
+++ b/tests/ui/parser/class-implements-bad-trait.stderr
@@ -0,0 +1,8 @@
+error: expected one of `!` or `::`, found `cat`
+  --> $DIR/class-implements-bad-trait.rs:2:7
+   |
+LL | class cat : nonexistent {
+   |       ^^^ expected one of `!` or `::`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/closure-return-syntax.rs b/tests/ui/parser/closure-return-syntax.rs
new file mode 100644
index 000000000..c6a08abef
--- /dev/null
+++ b/tests/ui/parser/closure-return-syntax.rs
@@ -0,0 +1,7 @@
+// Test that we cannot parse a closure with an explicit return type
+// unless it uses braces.
+
+fn main() {
+    let x = || -> i32 22;
+    //~^ ERROR expected `{`, found `22`
+}
diff --git a/tests/ui/parser/closure-return-syntax.stderr b/tests/ui/parser/closure-return-syntax.stderr
new file mode 100644
index 000000000..3d16a2067
--- /dev/null
+++ b/tests/ui/parser/closure-return-syntax.stderr
@@ -0,0 +1,13 @@
+error: expected `{`, found `22`
+  --> $DIR/closure-return-syntax.rs:5:23
+   |
+LL |     let x = || -> i32 22;
+   |                       ^^ expected `{`
+   |
+help: try placing this code inside a block
+   |
+LL |     let x = || -> i32 { 22 };
+   |                       +    +
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/column-offset-1-based.rs b/tests/ui/parser/column-offset-1-based.rs
new file mode 100644
index 000000000..0c24478c2
--- /dev/null
+++ b/tests/ui/parser/column-offset-1-based.rs
@@ -0,0 +1 @@
+# //~ ERROR expected one of `!` or `[`, found `<eof>`
diff --git a/tests/ui/parser/column-offset-1-based.stderr b/tests/ui/parser/column-offset-1-based.stderr
new file mode 100644
index 000000000..766d72a0a
--- /dev/null
+++ b/tests/ui/parser/column-offset-1-based.stderr
@@ -0,0 +1,8 @@
+error: expected one of `!` or `[`, found `<eof>`
+  --> $DIR/column-offset-1-based.rs:1:1
+   |
+LL | #
+   | ^ expected one of `!` or `[`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/const-param-decl-on-type-instead-of-impl.rs b/tests/ui/parser/const-param-decl-on-type-instead-of-impl.rs
new file mode 100644
index 000000000..53e3c6f96
--- /dev/null
+++ b/tests/ui/parser/const-param-decl-on-type-instead-of-impl.rs
@@ -0,0 +1,15 @@
+struct NInts<const N: usize>([u8; N]);
+impl NInts<const N: usize> {} //~ ERROR unexpected `const` parameter declaration
+
+fn main() {
+    let _: () = 42; //~ ERROR mismatched types
+}
+
+fn banana(a: <T<const N: usize>>::BAR) {}
+//~^ ERROR unexpected `const` parameter declaration
+//~| ERROR cannot find type `T` in this scope
+fn chaenomeles() {
+    path::path::Struct::<const N: usize>()
+    //~^ ERROR unexpected `const` parameter declaration
+    //~| ERROR failed to resolve: use of undeclared crate or module `path`
+}
diff --git a/tests/ui/parser/const-param-decl-on-type-instead-of-impl.stderr b/tests/ui/parser/const-param-decl-on-type-instead-of-impl.stderr
new file mode 100644
index 000000000..96885d11e
--- /dev/null
+++ b/tests/ui/parser/const-param-decl-on-type-instead-of-impl.stderr
@@ -0,0 +1,47 @@
+error: unexpected `const` parameter declaration
+  --> $DIR/const-param-decl-on-type-instead-of-impl.rs:2:12
+   |
+LL | impl NInts<const N: usize> {}
+   |            ^^^^^^^^^^^^^^ expected a `const` expression, not a parameter declaration
+   |
+help: `const` parameters must be declared for the `impl`
+   |
+LL | impl<const N: usize> NInts<N> {}
+   |     ++++++++++++++++       ~
+
+error: unexpected `const` parameter declaration
+  --> $DIR/const-param-decl-on-type-instead-of-impl.rs:8:17
+   |
+LL | fn banana(a: <T<const N: usize>>::BAR) {}
+   |                 ^^^^^^^^^^^^^^ expected a `const` expression, not a parameter declaration
+
+error: unexpected `const` parameter declaration
+  --> $DIR/const-param-decl-on-type-instead-of-impl.rs:12:26
+   |
+LL |     path::path::Struct::<const N: usize>()
+   |                          ^^^^^^^^^^^^^^ expected a `const` expression, not a parameter declaration
+
+error[E0433]: failed to resolve: use of undeclared crate or module `path`
+  --> $DIR/const-param-decl-on-type-instead-of-impl.rs:12:5
+   |
+LL |     path::path::Struct::<const N: usize>()
+   |     ^^^^ use of undeclared crate or module `path`
+
+error[E0412]: cannot find type `T` in this scope
+  --> $DIR/const-param-decl-on-type-instead-of-impl.rs:8:15
+   |
+LL | fn banana(a: <T<const N: usize>>::BAR) {}
+   |               ^ not found in this scope
+
+error[E0308]: mismatched types
+  --> $DIR/const-param-decl-on-type-instead-of-impl.rs:5:17
+   |
+LL |     let _: () = 42;
+   |            --   ^^ expected `()`, found integer
+   |            |
+   |            expected due to this
+
+error: aborting due to 6 previous errors
+
+Some errors have detailed explanations: E0308, E0412, E0433.
+For more information about an error, try `rustc --explain E0308`.
diff --git a/tests/ui/parser/constraints-before-generic-args-syntactic-pass.rs b/tests/ui/parser/constraints-before-generic-args-syntactic-pass.rs
new file mode 100644
index 000000000..d8346653c
--- /dev/null
+++ b/tests/ui/parser/constraints-before-generic-args-syntactic-pass.rs
@@ -0,0 +1,13 @@
+// check-pass
+
+#[cfg(FALSE)]
+fn syntax() {
+    foo::<T = u8, T: Ord, String>();
+    //~^ WARN associated type bounds are unstable
+    //~| WARN unstable syntax
+    foo::<T = u8, 'a, T: Ord>();
+    //~^ WARN associated type bounds are unstable
+    //~| WARN unstable syntax
+}
+
+fn main() {}
diff --git a/tests/ui/parser/constraints-before-generic-args-syntactic-pass.stderr b/tests/ui/parser/constraints-before-generic-args-syntactic-pass.stderr
new file mode 100644
index 000000000..7e843c7f4
--- /dev/null
+++ b/tests/ui/parser/constraints-before-generic-args-syntactic-pass.stderr
@@ -0,0 +1,24 @@
+warning: associated type bounds are unstable
+  --> $DIR/constraints-before-generic-args-syntactic-pass.rs:5:19
+   |
+LL |     foo::<T = u8, T: Ord, String>();
+   |                   ^^^^^^
+   |
+   = note: see issue #52662 <https://github.com/rust-lang/rust/issues/52662> for more information
+   = help: add `#![feature(associated_type_bounds)]` to the crate attributes to enable
+   = warning: unstable syntax can change at any point in the future, causing a hard error!
+   = note: for more information, see issue #65860 <https://github.com/rust-lang/rust/issues/65860>
+
+warning: associated type bounds are unstable
+  --> $DIR/constraints-before-generic-args-syntactic-pass.rs:8:23
+   |
+LL |     foo::<T = u8, 'a, T: Ord>();
+   |                       ^^^^^^
+   |
+   = note: see issue #52662 <https://github.com/rust-lang/rust/issues/52662> for more information
+   = help: add `#![feature(associated_type_bounds)]` to the crate attributes to enable
+   = warning: unstable syntax can change at any point in the future, causing a hard error!
+   = note: for more information, see issue #65860 <https://github.com/rust-lang/rust/issues/65860>
+
+warning: 2 warnings emitted
+
diff --git a/tests/ui/parser/default-on-wrong-item-kind.rs b/tests/ui/parser/default-on-wrong-item-kind.rs
new file mode 100644
index 000000000..98a95cfa3
--- /dev/null
+++ b/tests/ui/parser/default-on-wrong-item-kind.rs
@@ -0,0 +1,140 @@
+// Test parsing for `default` where it doesn't belong.
+// Specifically, we are interested in kinds of items or items in certain contexts.
+// Also test item kinds in `extern` blocks and associated contexts which are not allowed there.
+
+fn main() {}
+
+#[cfg(FALSE)]
+mod free_items {
+    default extern crate foo; //~ ERROR an extern crate cannot be `default`
+    default use foo; //~ ERROR a `use` import cannot be `default`
+    default static foo: u8; //~ ERROR a static item cannot be `default`
+    default const foo: u8;
+    default fn foo();
+    default mod foo {} //~ ERROR a module cannot be `default`
+    default extern "C" {} //~ ERROR an extern block cannot be `default`
+    default type foo = u8;
+    default enum foo {} //~ ERROR an enum cannot be `default`
+    default struct foo {} //~ ERROR a struct cannot be `default`
+    default union foo {} //~ ERROR a union cannot be `default`
+    default trait foo {} //~ ERROR a trait cannot be `default`
+    default trait foo = Ord; //~ ERROR a trait alias cannot be `default`
+    default impl foo {}
+    default!();
+    default::foo::bar!();
+    default default!(); //~ ERROR an item macro invocation cannot be `default`
+    default default::foo::bar!(); //~ ERROR an item macro invocation cannot be `default`
+    default macro foo {} //~ ERROR a macro definition cannot be `default`
+    default macro_rules! foo {} //~ ERROR a macro definition cannot be `default`
+}
+
+#[cfg(FALSE)]
+extern "C" {
+    default extern crate foo; //~ ERROR an extern crate cannot be `default`
+    //~^ ERROR extern crate is not supported in `extern` blocks
+    default use foo; //~ ERROR a `use` import cannot be `default`
+    //~^ ERROR `use` import is not supported in `extern` blocks
+    default static foo: u8; //~ ERROR a static item cannot be `default`
+    default const foo: u8;
+    //~^ ERROR extern items cannot be `const`
+    default fn foo();
+    default mod foo {} //~ ERROR a module cannot be `default`
+    //~^ ERROR module is not supported in `extern` blocks
+    default extern "C" {} //~ ERROR an extern block cannot be `default`
+    //~^ ERROR extern block is not supported in `extern` blocks
+    default type foo = u8;
+    default enum foo {} //~ ERROR an enum cannot be `default`
+    //~^ ERROR enum is not supported in `extern` blocks
+    default struct foo {} //~ ERROR a struct cannot be `default`
+    //~^ ERROR struct is not supported in `extern` blocks
+    default union foo {} //~ ERROR a union cannot be `default`
+    //~^ ERROR union is not supported in `extern` blocks
+    default trait foo {} //~ ERROR a trait cannot be `default`
+    //~^ ERROR trait is not supported in `extern` blocks
+    default trait foo = Ord; //~ ERROR a trait alias cannot be `default`
+    //~^ ERROR trait alias is not supported in `extern` blocks
+    default impl foo {}
+    //~^ ERROR implementation is not supported in `extern` blocks
+    default!();
+    default::foo::bar!();
+    default default!(); //~ ERROR an item macro invocation cannot be `default`
+    default default::foo::bar!(); //~ ERROR an item macro invocation cannot be `default`
+    default macro foo {} //~ ERROR a macro definition cannot be `default`
+    //~^ ERROR macro definition is not supported in `extern` blocks
+    default macro_rules! foo {} //~ ERROR a macro definition cannot be `default`
+    //~^ ERROR macro definition is not supported in `extern` blocks
+}
+
+#[cfg(FALSE)]
+impl S {
+    default extern crate foo; //~ ERROR an extern crate cannot be `default`
+    //~^ ERROR extern crate is not supported in `trait`s or `impl`s
+    default use foo; //~ ERROR a `use` import cannot be `default`
+    //~^ ERROR `use` import is not supported in `trait`s or `impl`s
+    default static foo: u8; //~ ERROR a static item cannot be `default`
+    //~^ ERROR associated `static` items are not allowed
+    default const foo: u8;
+    default fn foo();
+    default mod foo {}//~ ERROR a module cannot be `default`
+    //~^ ERROR module is not supported in `trait`s or `impl`s
+    default extern "C" {} //~ ERROR an extern block cannot be `default`
+    //~^ ERROR extern block is not supported in `trait`s or `impl`s
+    default type foo = u8;
+    default enum foo {} //~ ERROR an enum cannot be `default`
+    //~^ ERROR enum is not supported in `trait`s or `impl`s
+    default struct foo {} //~ ERROR a struct cannot be `default`
+    //~^ ERROR struct is not supported in `trait`s or `impl`s
+    default union foo {} //~ ERROR a union cannot be `default`
+    //~^ ERROR union is not supported in `trait`s or `impl`s
+    default trait foo {} //~ ERROR a trait cannot be `default`
+    //~^ ERROR trait is not supported in `trait`s or `impl`s
+    default trait foo = Ord; //~ ERROR a trait alias cannot be `default`
+    //~^ ERROR trait alias is not supported in `trait`s or `impl`s
+    default impl foo {}
+    //~^ ERROR implementation is not supported in `trait`s or `impl`s
+    default!();
+    default::foo::bar!();
+    default default!(); //~ ERROR an item macro invocation cannot be `default`
+    default default::foo::bar!(); //~ ERROR an item macro invocation cannot be `default`
+    default macro foo {} //~ ERROR a macro definition cannot be `default`
+    //~^ ERROR macro definition is not supported in `trait`s or `impl`s
+    default macro_rules! foo {} //~ ERROR a macro definition cannot be `default`
+    //~^ ERROR macro definition is not supported in `trait`s or `impl`s
+}
+
+#[cfg(FALSE)]
+trait T {
+    default extern crate foo; //~ ERROR an extern crate cannot be `default`
+    //~^ ERROR extern crate is not supported in `trait`s or `impl`s
+    default use foo; //~ ERROR a `use` import cannot be `default`
+    //~^ ERROR `use` import is not supported in `trait`s or `impl`s
+    default static foo: u8; //~ ERROR a static item cannot be `default`
+    //~^ ERROR associated `static` items are not allowed
+    default const foo: u8;
+    default fn foo();
+    default mod foo {}//~ ERROR a module cannot be `default`
+    //~^ ERROR module is not supported in `trait`s or `impl`s
+    default extern "C" {} //~ ERROR an extern block cannot be `default`
+    //~^ ERROR extern block is not supported in `trait`s or `impl`s
+    default type foo = u8;
+    default enum foo {} //~ ERROR an enum cannot be `default`
+    //~^ ERROR enum is not supported in `trait`s or `impl`s
+    default struct foo {} //~ ERROR a struct cannot be `default`
+    //~^ ERROR struct is not supported in `trait`s or `impl`s
+    default union foo {} //~ ERROR a union cannot be `default`
+    //~^ ERROR union is not supported in `trait`s or `impl`s
+    default trait foo {} //~ ERROR a trait cannot be `default`
+    //~^ ERROR trait is not supported in `trait`s or `impl`s
+    default trait foo = Ord; //~ ERROR a trait alias cannot be `default`
+    //~^ ERROR trait alias is not supported in `trait`s or `impl`s
+    default impl foo {}
+    //~^ ERROR implementation is not supported in `trait`s or `impl`s
+    default!();
+    default::foo::bar!();
+    default default!(); //~ ERROR an item macro invocation cannot be `default`
+    default default::foo::bar!(); //~ ERROR an item macro invocation cannot be `default`
+    default macro foo {} //~ ERROR a macro definition cannot be `default`
+    //~^ ERROR macro definition is not supported in `trait`s or `impl`s
+    default macro_rules! foo {} //~ ERROR a macro definition cannot be `default`
+    //~^ ERROR macro definition is not supported in `trait`s or `impl`s
+}
diff --git a/tests/ui/parser/default-on-wrong-item-kind.stderr b/tests/ui/parser/default-on-wrong-item-kind.stderr
new file mode 100644
index 000000000..af513f761
--- /dev/null
+++ b/tests/ui/parser/default-on-wrong-item-kind.stderr
@@ -0,0 +1,760 @@
+error: an extern crate cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:9:5
+   |
+LL |     default extern crate foo;
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: a `use` import cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:10:5
+   |
+LL |     default use foo;
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: a static item cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:11:5
+   |
+LL |     default static foo: u8;
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: a module cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:14:5
+   |
+LL |     default mod foo {}
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: an extern block cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:15:5
+   |
+LL |     default extern "C" {}
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: an enum cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:17:5
+   |
+LL |     default enum foo {}
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: a struct cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:18:5
+   |
+LL |     default struct foo {}
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: a union cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:19:5
+   |
+LL |     default union foo {}
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: a trait cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:20:5
+   |
+LL |     default trait foo {}
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: a trait alias cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:21:5
+   |
+LL |     default trait foo = Ord;
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: an item macro invocation cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:25:5
+   |
+LL |     default default!();
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: an item macro invocation cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:26:5
+   |
+LL |     default default::foo::bar!();
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: a macro definition cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:27:5
+   |
+LL |     default macro foo {}
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: a macro definition cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:28:5
+   |
+LL |     default macro_rules! foo {}
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: an extern crate cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:33:5
+   |
+LL |     default extern crate foo;
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: extern crate is not supported in `extern` blocks
+  --> $DIR/default-on-wrong-item-kind.rs:33:5
+   |
+LL |     default extern crate foo;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = help: consider moving the extern crate out to a nearby module scope
+
+error: a `use` import cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:35:5
+   |
+LL |     default use foo;
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: `use` import is not supported in `extern` blocks
+  --> $DIR/default-on-wrong-item-kind.rs:35:5
+   |
+LL |     default use foo;
+   |     ^^^^^^^^^^^^^^^^
+   |
+   = help: consider moving the `use` import out to a nearby module scope
+
+error: a static item cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:37:5
+   |
+LL |     default static foo: u8;
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: extern items cannot be `const`
+  --> $DIR/default-on-wrong-item-kind.rs:38:19
+   |
+LL |     default const foo: u8;
+   |     --------------^^^
+   |     |
+   |     help: try using a static value: `static`
+   |
+   = note: for more information, visit https://doc.rust-lang.org/std/keyword.extern.html
+
+error: a module cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:41:5
+   |
+LL |     default mod foo {}
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: module is not supported in `extern` blocks
+  --> $DIR/default-on-wrong-item-kind.rs:41:5
+   |
+LL |     default mod foo {}
+   |     ^^^^^^^^^^^^^^^
+   |
+   = help: consider moving the module out to a nearby module scope
+
+error: an extern block cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:43:5
+   |
+LL |     default extern "C" {}
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: extern block is not supported in `extern` blocks
+  --> $DIR/default-on-wrong-item-kind.rs:43:5
+   |
+LL |     default extern "C" {}
+   |     ^^^^^^^^^^^^^^^^^^
+   |
+   = help: consider moving the extern block out to a nearby module scope
+
+error: an enum cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:46:5
+   |
+LL |     default enum foo {}
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: enum is not supported in `extern` blocks
+  --> $DIR/default-on-wrong-item-kind.rs:46:5
+   |
+LL |     default enum foo {}
+   |     ^^^^^^^^^^^^^^^^
+   |
+   = help: consider moving the enum out to a nearby module scope
+
+error: a struct cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:48:5
+   |
+LL |     default struct foo {}
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: struct is not supported in `extern` blocks
+  --> $DIR/default-on-wrong-item-kind.rs:48:5
+   |
+LL |     default struct foo {}
+   |     ^^^^^^^^^^^^^^^^^^
+   |
+   = help: consider moving the struct out to a nearby module scope
+
+error: a union cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:50:5
+   |
+LL |     default union foo {}
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: union is not supported in `extern` blocks
+  --> $DIR/default-on-wrong-item-kind.rs:50:5
+   |
+LL |     default union foo {}
+   |     ^^^^^^^^^^^^^^^^^
+   |
+   = help: consider moving the union out to a nearby module scope
+
+error: a trait cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:52:5
+   |
+LL |     default trait foo {}
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: trait is not supported in `extern` blocks
+  --> $DIR/default-on-wrong-item-kind.rs:52:5
+   |
+LL |     default trait foo {}
+   |     ^^^^^^^^^^^^^^^^^
+   |
+   = help: consider moving the trait out to a nearby module scope
+
+error: a trait alias cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:54:5
+   |
+LL |     default trait foo = Ord;
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: trait alias is not supported in `extern` blocks
+  --> $DIR/default-on-wrong-item-kind.rs:54:5
+   |
+LL |     default trait foo = Ord;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = help: consider moving the trait alias out to a nearby module scope
+
+error: implementation is not supported in `extern` blocks
+  --> $DIR/default-on-wrong-item-kind.rs:56:5
+   |
+LL |     default impl foo {}
+   |     ^^^^^^^^^^^^^^^^
+   |
+   = help: consider moving the implementation out to a nearby module scope
+
+error: an item macro invocation cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:60:5
+   |
+LL |     default default!();
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: an item macro invocation cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:61:5
+   |
+LL |     default default::foo::bar!();
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: a macro definition cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:62:5
+   |
+LL |     default macro foo {}
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: macro definition is not supported in `extern` blocks
+  --> $DIR/default-on-wrong-item-kind.rs:62:5
+   |
+LL |     default macro foo {}
+   |     ^^^^^^^^^^^^^^^^^
+   |
+   = help: consider moving the macro definition out to a nearby module scope
+
+error: a macro definition cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:64:5
+   |
+LL |     default macro_rules! foo {}
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: macro definition is not supported in `extern` blocks
+  --> $DIR/default-on-wrong-item-kind.rs:64:5
+   |
+LL |     default macro_rules! foo {}
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = help: consider moving the macro definition out to a nearby module scope
+
+error: an extern crate cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:70:5
+   |
+LL |     default extern crate foo;
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: extern crate is not supported in `trait`s or `impl`s
+  --> $DIR/default-on-wrong-item-kind.rs:70:5
+   |
+LL |     default extern crate foo;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = help: consider moving the extern crate out to a nearby module scope
+
+error: a `use` import cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:72:5
+   |
+LL |     default use foo;
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: `use` import is not supported in `trait`s or `impl`s
+  --> $DIR/default-on-wrong-item-kind.rs:72:5
+   |
+LL |     default use foo;
+   |     ^^^^^^^^^^^^^^^^
+   |
+   = help: consider moving the `use` import out to a nearby module scope
+
+error: a static item cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:74:5
+   |
+LL |     default static foo: u8;
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: associated `static` items are not allowed
+  --> $DIR/default-on-wrong-item-kind.rs:74:5
+   |
+LL |     default static foo: u8;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^
+
+error: a module cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:78:5
+   |
+LL |     default mod foo {}
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: module is not supported in `trait`s or `impl`s
+  --> $DIR/default-on-wrong-item-kind.rs:78:5
+   |
+LL |     default mod foo {}
+   |     ^^^^^^^^^^^^^^^
+   |
+   = help: consider moving the module out to a nearby module scope
+
+error: an extern block cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:80:5
+   |
+LL |     default extern "C" {}
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: extern block is not supported in `trait`s or `impl`s
+  --> $DIR/default-on-wrong-item-kind.rs:80:5
+   |
+LL |     default extern "C" {}
+   |     ^^^^^^^^^^^^^^^^^^
+   |
+   = help: consider moving the extern block out to a nearby module scope
+
+error: an enum cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:83:5
+   |
+LL |     default enum foo {}
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: enum is not supported in `trait`s or `impl`s
+  --> $DIR/default-on-wrong-item-kind.rs:83:5
+   |
+LL |     default enum foo {}
+   |     ^^^^^^^^^^^^^^^^
+   |
+   = help: consider moving the enum out to a nearby module scope
+
+error: a struct cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:85:5
+   |
+LL |     default struct foo {}
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: struct is not supported in `trait`s or `impl`s
+  --> $DIR/default-on-wrong-item-kind.rs:85:5
+   |
+LL |     default struct foo {}
+   |     ^^^^^^^^^^^^^^^^^^
+   |
+   = help: consider moving the struct out to a nearby module scope
+
+error: a union cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:87:5
+   |
+LL |     default union foo {}
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: union is not supported in `trait`s or `impl`s
+  --> $DIR/default-on-wrong-item-kind.rs:87:5
+   |
+LL |     default union foo {}
+   |     ^^^^^^^^^^^^^^^^^
+   |
+   = help: consider moving the union out to a nearby module scope
+
+error: a trait cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:89:5
+   |
+LL |     default trait foo {}
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: trait is not supported in `trait`s or `impl`s
+  --> $DIR/default-on-wrong-item-kind.rs:89:5
+   |
+LL |     default trait foo {}
+   |     ^^^^^^^^^^^^^^^^^
+   |
+   = help: consider moving the trait out to a nearby module scope
+
+error: a trait alias cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:91:5
+   |
+LL |     default trait foo = Ord;
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: trait alias is not supported in `trait`s or `impl`s
+  --> $DIR/default-on-wrong-item-kind.rs:91:5
+   |
+LL |     default trait foo = Ord;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = help: consider moving the trait alias out to a nearby module scope
+
+error: implementation is not supported in `trait`s or `impl`s
+  --> $DIR/default-on-wrong-item-kind.rs:93:5
+   |
+LL |     default impl foo {}
+   |     ^^^^^^^^^^^^^^^^
+   |
+   = help: consider moving the implementation out to a nearby module scope
+
+error: an item macro invocation cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:97:5
+   |
+LL |     default default!();
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: an item macro invocation cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:98:5
+   |
+LL |     default default::foo::bar!();
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: a macro definition cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:99:5
+   |
+LL |     default macro foo {}
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: macro definition is not supported in `trait`s or `impl`s
+  --> $DIR/default-on-wrong-item-kind.rs:99:5
+   |
+LL |     default macro foo {}
+   |     ^^^^^^^^^^^^^^^^^
+   |
+   = help: consider moving the macro definition out to a nearby module scope
+
+error: a macro definition cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:101:5
+   |
+LL |     default macro_rules! foo {}
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: macro definition is not supported in `trait`s or `impl`s
+  --> $DIR/default-on-wrong-item-kind.rs:101:5
+   |
+LL |     default macro_rules! foo {}
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = help: consider moving the macro definition out to a nearby module scope
+
+error: an extern crate cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:107:5
+   |
+LL |     default extern crate foo;
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: extern crate is not supported in `trait`s or `impl`s
+  --> $DIR/default-on-wrong-item-kind.rs:107:5
+   |
+LL |     default extern crate foo;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = help: consider moving the extern crate out to a nearby module scope
+
+error: a `use` import cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:109:5
+   |
+LL |     default use foo;
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: `use` import is not supported in `trait`s or `impl`s
+  --> $DIR/default-on-wrong-item-kind.rs:109:5
+   |
+LL |     default use foo;
+   |     ^^^^^^^^^^^^^^^^
+   |
+   = help: consider moving the `use` import out to a nearby module scope
+
+error: a static item cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:111:5
+   |
+LL |     default static foo: u8;
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: associated `static` items are not allowed
+  --> $DIR/default-on-wrong-item-kind.rs:111:5
+   |
+LL |     default static foo: u8;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^
+
+error: a module cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:115:5
+   |
+LL |     default mod foo {}
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: module is not supported in `trait`s or `impl`s
+  --> $DIR/default-on-wrong-item-kind.rs:115:5
+   |
+LL |     default mod foo {}
+   |     ^^^^^^^^^^^^^^^
+   |
+   = help: consider moving the module out to a nearby module scope
+
+error: an extern block cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:117:5
+   |
+LL |     default extern "C" {}
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: extern block is not supported in `trait`s or `impl`s
+  --> $DIR/default-on-wrong-item-kind.rs:117:5
+   |
+LL |     default extern "C" {}
+   |     ^^^^^^^^^^^^^^^^^^
+   |
+   = help: consider moving the extern block out to a nearby module scope
+
+error: an enum cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:120:5
+   |
+LL |     default enum foo {}
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: enum is not supported in `trait`s or `impl`s
+  --> $DIR/default-on-wrong-item-kind.rs:120:5
+   |
+LL |     default enum foo {}
+   |     ^^^^^^^^^^^^^^^^
+   |
+   = help: consider moving the enum out to a nearby module scope
+
+error: a struct cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:122:5
+   |
+LL |     default struct foo {}
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: struct is not supported in `trait`s or `impl`s
+  --> $DIR/default-on-wrong-item-kind.rs:122:5
+   |
+LL |     default struct foo {}
+   |     ^^^^^^^^^^^^^^^^^^
+   |
+   = help: consider moving the struct out to a nearby module scope
+
+error: a union cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:124:5
+   |
+LL |     default union foo {}
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: union is not supported in `trait`s or `impl`s
+  --> $DIR/default-on-wrong-item-kind.rs:124:5
+   |
+LL |     default union foo {}
+   |     ^^^^^^^^^^^^^^^^^
+   |
+   = help: consider moving the union out to a nearby module scope
+
+error: a trait cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:126:5
+   |
+LL |     default trait foo {}
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: trait is not supported in `trait`s or `impl`s
+  --> $DIR/default-on-wrong-item-kind.rs:126:5
+   |
+LL |     default trait foo {}
+   |     ^^^^^^^^^^^^^^^^^
+   |
+   = help: consider moving the trait out to a nearby module scope
+
+error: a trait alias cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:128:5
+   |
+LL |     default trait foo = Ord;
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: trait alias is not supported in `trait`s or `impl`s
+  --> $DIR/default-on-wrong-item-kind.rs:128:5
+   |
+LL |     default trait foo = Ord;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = help: consider moving the trait alias out to a nearby module scope
+
+error: implementation is not supported in `trait`s or `impl`s
+  --> $DIR/default-on-wrong-item-kind.rs:130:5
+   |
+LL |     default impl foo {}
+   |     ^^^^^^^^^^^^^^^^
+   |
+   = help: consider moving the implementation out to a nearby module scope
+
+error: an item macro invocation cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:134:5
+   |
+LL |     default default!();
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: an item macro invocation cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:135:5
+   |
+LL |     default default::foo::bar!();
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: a macro definition cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:136:5
+   |
+LL |     default macro foo {}
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: macro definition is not supported in `trait`s or `impl`s
+  --> $DIR/default-on-wrong-item-kind.rs:136:5
+   |
+LL |     default macro foo {}
+   |     ^^^^^^^^^^^^^^^^^
+   |
+   = help: consider moving the macro definition out to a nearby module scope
+
+error: a macro definition cannot be `default`
+  --> $DIR/default-on-wrong-item-kind.rs:138:5
+   |
+LL |     default macro_rules! foo {}
+   |     ^^^^^^^ `default` because of this
+   |
+   = note: only associated `fn`, `const`, and `type` items can be `default`
+
+error: macro definition is not supported in `trait`s or `impl`s
+  --> $DIR/default-on-wrong-item-kind.rs:138:5
+   |
+LL |     default macro_rules! foo {}
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = help: consider moving the macro definition out to a nearby module scope
+
+error: aborting due to 95 previous errors
+
diff --git a/tests/ui/parser/default-unmatched-assoc.rs b/tests/ui/parser/default-unmatched-assoc.rs
new file mode 100644
index 000000000..168ea3e76
--- /dev/null
+++ b/tests/ui/parser/default-unmatched-assoc.rs
@@ -0,0 +1,16 @@
+fn main() {}
+
+trait Foo {
+    default!(); //~ ERROR cannot find macro `default` in this scope
+    default do
+    //~^ ERROR `default` is not followed by an item
+    //~| ERROR non-item in item list
+}
+
+struct S;
+impl S {
+    default!(); //~ ERROR cannot find macro `default` in this scope
+    default do
+    //~^ ERROR `default` is not followed by an item
+    //~| ERROR non-item in item list
+}
diff --git a/tests/ui/parser/default-unmatched-assoc.stderr b/tests/ui/parser/default-unmatched-assoc.stderr
new file mode 100644
index 000000000..ee35fded9
--- /dev/null
+++ b/tests/ui/parser/default-unmatched-assoc.stderr
@@ -0,0 +1,54 @@
+error: `default` is not followed by an item
+  --> $DIR/default-unmatched-assoc.rs:5:5
+   |
+LL |     default do
+   |     ^^^^^^^ the `default` qualifier
+   |
+   = note: only `fn`, `const`, `type`, or `impl` items may be prefixed by `default`
+
+error: non-item in item list
+  --> $DIR/default-unmatched-assoc.rs:5:13
+   |
+LL | trait Foo {
+   |           - item list starts here
+LL |     default!();
+LL |     default do
+   |             ^^ non-item starts here
+...
+LL | }
+   | - item list ends here
+
+error: `default` is not followed by an item
+  --> $DIR/default-unmatched-assoc.rs:13:5
+   |
+LL |     default do
+   |     ^^^^^^^ the `default` qualifier
+   |
+   = note: only `fn`, `const`, `type`, or `impl` items may be prefixed by `default`
+
+error: non-item in item list
+  --> $DIR/default-unmatched-assoc.rs:13:13
+   |
+LL | impl S {
+   |        - item list starts here
+LL |     default!();
+LL |     default do
+   |             ^^ non-item starts here
+...
+LL | }
+   | - item list ends here
+
+error: cannot find macro `default` in this scope
+  --> $DIR/default-unmatched-assoc.rs:4:5
+   |
+LL |     default!();
+   |     ^^^^^^^
+
+error: cannot find macro `default` in this scope
+  --> $DIR/default-unmatched-assoc.rs:12:5
+   |
+LL |     default!();
+   |     ^^^^^^^
+
+error: aborting due to 6 previous errors
+
diff --git a/tests/ui/parser/default-unmatched-extern.rs b/tests/ui/parser/default-unmatched-extern.rs
new file mode 100644
index 000000000..8d0ea590f
--- /dev/null
+++ b/tests/ui/parser/default-unmatched-extern.rs
@@ -0,0 +1,8 @@
+fn main() {}
+
+extern "C" {
+    default!(); //~ ERROR cannot find macro `default` in this scope
+    default do
+    //~^ ERROR `default` is not followed by an item
+    //~| ERROR non-item in item list
+}
diff --git a/tests/ui/parser/default-unmatched-extern.stderr b/tests/ui/parser/default-unmatched-extern.stderr
new file mode 100644
index 000000000..bb4efd516
--- /dev/null
+++ b/tests/ui/parser/default-unmatched-extern.stderr
@@ -0,0 +1,28 @@
+error: `default` is not followed by an item
+  --> $DIR/default-unmatched-extern.rs:5:5
+   |
+LL |     default do
+   |     ^^^^^^^ the `default` qualifier
+   |
+   = note: only `fn`, `const`, `type`, or `impl` items may be prefixed by `default`
+
+error: non-item in item list
+  --> $DIR/default-unmatched-extern.rs:5:13
+   |
+LL | extern "C" {
+   |            - item list starts here
+LL |     default!();
+LL |     default do
+   |             ^^ non-item starts here
+...
+LL | }
+   | - item list ends here
+
+error: cannot find macro `default` in this scope
+  --> $DIR/default-unmatched-extern.rs:4:5
+   |
+LL |     default!();
+   |     ^^^^^^^
+
+error: aborting due to 3 previous errors
+
diff --git a/tests/ui/parser/default-unmatched.rs b/tests/ui/parser/default-unmatched.rs
new file mode 100644
index 000000000..49346e5c6
--- /dev/null
+++ b/tests/ui/parser/default-unmatched.rs
@@ -0,0 +1,6 @@
+mod foo {
+    default!(); // OK.
+    default do
+    //~^ ERROR `default` is not followed by an item
+    //~| ERROR expected item, found reserved keyword `do`
+}
diff --git a/tests/ui/parser/default-unmatched.stderr b/tests/ui/parser/default-unmatched.stderr
new file mode 100644
index 000000000..331e003f6
--- /dev/null
+++ b/tests/ui/parser/default-unmatched.stderr
@@ -0,0 +1,16 @@
+error: `default` is not followed by an item
+  --> $DIR/default-unmatched.rs:3:5
+   |
+LL |     default do
+   |     ^^^^^^^ the `default` qualifier
+   |
+   = note: only `fn`, `const`, `type`, or `impl` items may be prefixed by `default`
+
+error: expected item, found reserved keyword `do`
+  --> $DIR/default-unmatched.rs:3:13
+   |
+LL |     default do
+   |             ^^ expected item
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/default.rs b/tests/ui/parser/default.rs
new file mode 100644
index 000000000..52338c1f1
--- /dev/null
+++ b/tests/ui/parser/default.rs
@@ -0,0 +1,28 @@
+// Test successful and unsuccessful parsing of the `default` contextual keyword
+
+#![feature(specialization)]
+//~^ WARN the feature `specialization` is incomplete
+
+trait Foo {
+    fn foo<T: Default>() -> T;
+}
+
+impl Foo for u8 {
+    default fn foo<T: Default>() -> T {
+        T::default()
+    }
+}
+
+impl Foo for u16 {
+    pub default fn foo<T: Default>() -> T { //~ ERROR unnecessary visibility qualifier
+        T::default()
+    }
+}
+
+impl Foo for u32 { //~ ERROR not all trait items implemented, missing: `foo`
+    default pub fn foo<T: Default>() -> T { T::default() }
+    //~^ ERROR `default` is not followed by an item
+    //~| ERROR non-item in item list
+}
+
+fn main() {}
diff --git a/tests/ui/parser/default.stderr b/tests/ui/parser/default.stderr
new file mode 100644
index 000000000..37aa48ccf
--- /dev/null
+++ b/tests/ui/parser/default.stderr
@@ -0,0 +1,48 @@
+error: `default` is not followed by an item
+  --> $DIR/default.rs:23:5
+   |
+LL |     default pub fn foo<T: Default>() -> T { T::default() }
+   |     ^^^^^^^ the `default` qualifier
+   |
+   = note: only `fn`, `const`, `type`, or `impl` items may be prefixed by `default`
+
+error: non-item in item list
+  --> $DIR/default.rs:23:13
+   |
+LL | impl Foo for u32 {
+   |                  - item list starts here
+LL |     default pub fn foo<T: Default>() -> T { T::default() }
+   |             ^^^ non-item starts here
+...
+LL | }
+   | - item list ends here
+
+error[E0449]: unnecessary visibility qualifier
+  --> $DIR/default.rs:17:5
+   |
+LL |     pub default fn foo<T: Default>() -> T {
+   |     ^^^ `pub` not permitted here because it's implied
+
+warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes
+  --> $DIR/default.rs:3:12
+   |
+LL | #![feature(specialization)]
+   |            ^^^^^^^^^^^^^^
+   |
+   = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
+   = help: consider using `min_specialization` instead, which is more stable and complete
+   = note: `#[warn(incomplete_features)]` on by default
+
+error[E0046]: not all trait items implemented, missing: `foo`
+  --> $DIR/default.rs:22:1
+   |
+LL |     fn foo<T: Default>() -> T;
+   |     -------------------------- `foo` from trait
+...
+LL | impl Foo for u32 {
+   | ^^^^^^^^^^^^^^^^ missing `foo` in implementation
+
+error: aborting due to 4 previous errors; 1 warning emitted
+
+Some errors have detailed explanations: E0046, E0449.
+For more information about an error, try `rustc --explain E0046`.
diff --git a/tests/ui/parser/diff-markers/enum-2.rs b/tests/ui/parser/diff-markers/enum-2.rs
new file mode 100644
index 000000000..76ea980fc
--- /dev/null
+++ b/tests/ui/parser/diff-markers/enum-2.rs
@@ -0,0 +1,11 @@
+enum E {
+    Foo {
+<<<<<<< HEAD //~ ERROR encountered diff marker
+        x: u8,
+|||||||
+        z: (),
+=======
+        y: i8,
+>>>>>>> branch
+    }
+}
diff --git a/tests/ui/parser/diff-markers/enum-2.stderr b/tests/ui/parser/diff-markers/enum-2.stderr
new file mode 100644
index 000000000..63da5c2a6
--- /dev/null
+++ b/tests/ui/parser/diff-markers/enum-2.stderr
@@ -0,0 +1,21 @@
+error: encountered diff marker
+  --> $DIR/enum-2.rs:3:1
+   |
+LL | <<<<<<< HEAD
+   | ^^^^^^^ after this is the code before the merge
+LL |         x: u8,
+LL | |||||||
+   | -------
+LL |         z: (),
+LL | =======
+   | -------
+LL |         y: i8,
+LL | >>>>>>> branch
+   | ^^^^^^^ above this are the incoming code changes
+   |
+   = help: if you're having merge conflicts after pulling new code, the top section is the code you already had and the bottom section is the remote code
+   = help: if you're in the middle of a rebase, the top section is the code being rebased onto and the bottom section is the code coming from the current commit being rebased
+   = note: for an explanation on these markers from the `git` documentation, visit <https://git-scm.com/book/en/v2/Git-Tools-Advanced-Merging#_checking_out_conflicts>
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/diff-markers/enum.rs b/tests/ui/parser/diff-markers/enum.rs
new file mode 100644
index 000000000..45df6e325
--- /dev/null
+++ b/tests/ui/parser/diff-markers/enum.rs
@@ -0,0 +1,7 @@
+enum E {
+<<<<<<< HEAD //~ ERROR encountered diff marker
+    Foo(u8),
+=======
+    Bar(i8),
+>>>>>>> branch
+}
diff --git a/tests/ui/parser/diff-markers/enum.stderr b/tests/ui/parser/diff-markers/enum.stderr
new file mode 100644
index 000000000..abbf3fb41
--- /dev/null
+++ b/tests/ui/parser/diff-markers/enum.stderr
@@ -0,0 +1,18 @@
+error: encountered diff marker
+  --> $DIR/enum.rs:2:1
+   |
+LL | <<<<<<< HEAD
+   | ^^^^^^^ after this is the code before the merge
+LL |     Foo(u8),
+LL | =======
+   | -------
+LL |     Bar(i8),
+LL | >>>>>>> branch
+   | ^^^^^^^ above this are the incoming code changes
+   |
+   = help: if you're having merge conflicts after pulling new code, the top section is the code you already had and the bottom section is the remote code
+   = help: if you're in the middle of a rebase, the top section is the code being rebased onto and the bottom section is the code coming from the current commit being rebased
+   = note: for an explanation on these markers from the `git` documentation, visit <https://git-scm.com/book/en/v2/Git-Tools-Advanced-Merging#_checking_out_conflicts>
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/diff-markers/fn-arg.rs b/tests/ui/parser/diff-markers/fn-arg.rs
new file mode 100644
index 000000000..86c355628
--- /dev/null
+++ b/tests/ui/parser/diff-markers/fn-arg.rs
@@ -0,0 +1,16 @@
+trait T {
+    fn foo(
+<<<<<<< HEAD //~ ERROR encountered diff marker
+        x: u8,
+=======
+        x: i8,
+>>>>>>> branch
+    ) {}
+}
+
+struct S;
+impl T for S {}
+
+fn main() {
+    S::foo(42);
+}
diff --git a/tests/ui/parser/diff-markers/fn-arg.stderr b/tests/ui/parser/diff-markers/fn-arg.stderr
new file mode 100644
index 000000000..933a20641
--- /dev/null
+++ b/tests/ui/parser/diff-markers/fn-arg.stderr
@@ -0,0 +1,18 @@
+error: encountered diff marker
+  --> $DIR/fn-arg.rs:3:1
+   |
+LL | <<<<<<< HEAD
+   | ^^^^^^^ after this is the code before the merge
+LL |         x: u8,
+LL | =======
+   | -------
+LL |         x: i8,
+LL | >>>>>>> branch
+   | ^^^^^^^ above this are the incoming code changes
+   |
+   = help: if you're having merge conflicts after pulling new code, the top section is the code you already had and the bottom section is the remote code
+   = help: if you're in the middle of a rebase, the top section is the code being rebased onto and the bottom section is the code coming from the current commit being rebased
+   = note: for an explanation on these markers from the `git` documentation, visit <https://git-scm.com/book/en/v2/Git-Tools-Advanced-Merging#_checking_out_conflicts>
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/diff-markers/item-with-attr.rs b/tests/ui/parser/diff-markers/item-with-attr.rs
new file mode 100644
index 000000000..985907c08
--- /dev/null
+++ b/tests/ui/parser/diff-markers/item-with-attr.rs
@@ -0,0 +1,10 @@
+#[attribute]
+<<<<<<< HEAD //~ ERROR encountered diff marker
+fn foo() {}
+=======
+fn bar() {}
+>>>>>>> branch
+
+fn main() {
+    foo();
+}
diff --git a/tests/ui/parser/diff-markers/item-with-attr.stderr b/tests/ui/parser/diff-markers/item-with-attr.stderr
new file mode 100644
index 000000000..850e2368e
--- /dev/null
+++ b/tests/ui/parser/diff-markers/item-with-attr.stderr
@@ -0,0 +1,18 @@
+error: encountered diff marker
+  --> $DIR/item-with-attr.rs:2:1
+   |
+LL | <<<<<<< HEAD
+   | ^^^^^^^ after this is the code before the merge
+LL | fn foo() {}
+LL | =======
+   | -------
+LL | fn bar() {}
+LL | >>>>>>> branch
+   | ^^^^^^^ above this are the incoming code changes
+   |
+   = help: if you're having merge conflicts after pulling new code, the top section is the code you already had and the bottom section is the remote code
+   = help: if you're in the middle of a rebase, the top section is the code being rebased onto and the bottom section is the code coming from the current commit being rebased
+   = note: for an explanation on these markers from the `git` documentation, visit <https://git-scm.com/book/en/v2/Git-Tools-Advanced-Merging#_checking_out_conflicts>
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/diff-markers/item.rs b/tests/ui/parser/diff-markers/item.rs
new file mode 100644
index 000000000..4ed36b7b4
--- /dev/null
+++ b/tests/ui/parser/diff-markers/item.rs
@@ -0,0 +1,9 @@
+<<<<<<< HEAD //~ ERROR encountered diff marker
+fn foo() {}
+=======
+fn bar() {}
+>>>>>>> branch
+
+fn main() {
+    foo();
+}
diff --git a/tests/ui/parser/diff-markers/item.stderr b/tests/ui/parser/diff-markers/item.stderr
new file mode 100644
index 000000000..9ab3631a6
--- /dev/null
+++ b/tests/ui/parser/diff-markers/item.stderr
@@ -0,0 +1,18 @@
+error: encountered diff marker
+  --> $DIR/item.rs:1:1
+   |
+LL | <<<<<<< HEAD
+   | ^^^^^^^ after this is the code before the merge
+LL | fn foo() {}
+LL | =======
+   | -------
+LL | fn bar() {}
+LL | >>>>>>> branch
+   | ^^^^^^^ above this are the incoming code changes
+   |
+   = help: if you're having merge conflicts after pulling new code, the top section is the code you already had and the bottom section is the remote code
+   = help: if you're in the middle of a rebase, the top section is the code being rebased onto and the bottom section is the code coming from the current commit being rebased
+   = note: for an explanation on these markers from the `git` documentation, visit <https://git-scm.com/book/en/v2/Git-Tools-Advanced-Merging#_checking_out_conflicts>
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/diff-markers/statement.rs b/tests/ui/parser/diff-markers/statement.rs
new file mode 100644
index 000000000..e55d16d3b
--- /dev/null
+++ b/tests/ui/parser/diff-markers/statement.rs
@@ -0,0 +1,15 @@
+trait T {
+    fn foo() {}
+    fn bar() {}
+}
+
+struct S;
+impl T for S {}
+
+fn main() {
+<<<<<<< HEAD //~ ERROR encountered diff marker
+    S::foo();
+=======
+    S::bar();
+>>>>>>> branch
+}
diff --git a/tests/ui/parser/diff-markers/statement.stderr b/tests/ui/parser/diff-markers/statement.stderr
new file mode 100644
index 000000000..7ca2495b8
--- /dev/null
+++ b/tests/ui/parser/diff-markers/statement.stderr
@@ -0,0 +1,18 @@
+error: encountered diff marker
+  --> $DIR/statement.rs:10:1
+   |
+LL | <<<<<<< HEAD
+   | ^^^^^^^ after this is the code before the merge
+LL |     S::foo();
+LL | =======
+   | -------
+LL |     S::bar();
+LL | >>>>>>> branch
+   | ^^^^^^^ above this are the incoming code changes
+   |
+   = help: if you're having merge conflicts after pulling new code, the top section is the code you already had and the bottom section is the remote code
+   = help: if you're in the middle of a rebase, the top section is the code being rebased onto and the bottom section is the code coming from the current commit being rebased
+   = note: for an explanation on these markers from the `git` documentation, visit <https://git-scm.com/book/en/v2/Git-Tools-Advanced-Merging#_checking_out_conflicts>
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/diff-markers/struct-expr.rs b/tests/ui/parser/diff-markers/struct-expr.rs
new file mode 100644
index 000000000..99d2fd662
--- /dev/null
+++ b/tests/ui/parser/diff-markers/struct-expr.rs
@@ -0,0 +1,12 @@
+struct S {
+    x: u8,
+}
+fn main() {
+    let _ = S {
+<<<<<<< HEAD //~ ERROR encountered diff marker
+        x: 42,
+=======
+        x: 0,
+>>>>>>> branch
+    }
+}
diff --git a/tests/ui/parser/diff-markers/struct-expr.stderr b/tests/ui/parser/diff-markers/struct-expr.stderr
new file mode 100644
index 000000000..d70476a98
--- /dev/null
+++ b/tests/ui/parser/diff-markers/struct-expr.stderr
@@ -0,0 +1,18 @@
+error: encountered diff marker
+  --> $DIR/struct-expr.rs:6:1
+   |
+LL | <<<<<<< HEAD
+   | ^^^^^^^ after this is the code before the merge
+LL |         x: 42,
+LL | =======
+   | -------
+LL |         x: 0,
+LL | >>>>>>> branch
+   | ^^^^^^^ above this are the incoming code changes
+   |
+   = help: if you're having merge conflicts after pulling new code, the top section is the code you already had and the bottom section is the remote code
+   = help: if you're in the middle of a rebase, the top section is the code being rebased onto and the bottom section is the code coming from the current commit being rebased
+   = note: for an explanation on these markers from the `git` documentation, visit <https://git-scm.com/book/en/v2/Git-Tools-Advanced-Merging#_checking_out_conflicts>
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/diff-markers/struct.rs b/tests/ui/parser/diff-markers/struct.rs
new file mode 100644
index 000000000..d26464d47
--- /dev/null
+++ b/tests/ui/parser/diff-markers/struct.rs
@@ -0,0 +1,7 @@
+struct S {
+<<<<<<< HEAD //~ ERROR encountered diff marker
+    x: u8,
+=======
+    x: i8,
+>>>>>>> branch
+}
diff --git a/tests/ui/parser/diff-markers/struct.stderr b/tests/ui/parser/diff-markers/struct.stderr
new file mode 100644
index 000000000..cc0b3da66
--- /dev/null
+++ b/tests/ui/parser/diff-markers/struct.stderr
@@ -0,0 +1,18 @@
+error: encountered diff marker
+  --> $DIR/struct.rs:2:1
+   |
+LL | <<<<<<< HEAD
+   | ^^^^^^^ after this is the code before the merge
+LL |     x: u8,
+LL | =======
+   | -------
+LL |     x: i8,
+LL | >>>>>>> branch
+   | ^^^^^^^ above this are the incoming code changes
+   |
+   = help: if you're having merge conflicts after pulling new code, the top section is the code you already had and the bottom section is the remote code
+   = help: if you're in the middle of a rebase, the top section is the code being rebased onto and the bottom section is the code coming from the current commit being rebased
+   = note: for an explanation on these markers from the `git` documentation, visit <https://git-scm.com/book/en/v2/Git-Tools-Advanced-Merging#_checking_out_conflicts>
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/diff-markers/trait-item.rs b/tests/ui/parser/diff-markers/trait-item.rs
new file mode 100644
index 000000000..3227c8212
--- /dev/null
+++ b/tests/ui/parser/diff-markers/trait-item.rs
@@ -0,0 +1,14 @@
+trait T {
+<<<<<<< HEAD //~ ERROR encountered diff marker
+    fn foo() {}
+=======
+    fn bar() {}
+>>>>>>> branch
+}
+
+struct S;
+impl T for S {}
+
+fn main() {
+    S::foo();
+}
diff --git a/tests/ui/parser/diff-markers/trait-item.stderr b/tests/ui/parser/diff-markers/trait-item.stderr
new file mode 100644
index 000000000..cdc19f8e0
--- /dev/null
+++ b/tests/ui/parser/diff-markers/trait-item.stderr
@@ -0,0 +1,18 @@
+error: encountered diff marker
+  --> $DIR/trait-item.rs:2:1
+   |
+LL | <<<<<<< HEAD
+   | ^^^^^^^ after this is the code before the merge
+LL |     fn foo() {}
+LL | =======
+   | -------
+LL |     fn bar() {}
+LL | >>>>>>> branch
+   | ^^^^^^^ above this are the incoming code changes
+   |
+   = help: if you're having merge conflicts after pulling new code, the top section is the code you already had and the bottom section is the remote code
+   = help: if you're in the middle of a rebase, the top section is the code being rebased onto and the bottom section is the code coming from the current commit being rebased
+   = note: for an explanation on these markers from the `git` documentation, visit <https://git-scm.com/book/en/v2/Git-Tools-Advanced-Merging#_checking_out_conflicts>
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/diff-markers/tuple-struct.rs b/tests/ui/parser/diff-markers/tuple-struct.rs
new file mode 100644
index 000000000..7eec35c96
--- /dev/null
+++ b/tests/ui/parser/diff-markers/tuple-struct.rs
@@ -0,0 +1,7 @@
+struct S(
+<<<<<<< HEAD //~ ERROR encountered diff marker
+    u8,
+=======
+    i8,
+>>>>>>> branch
+);
diff --git a/tests/ui/parser/diff-markers/tuple-struct.stderr b/tests/ui/parser/diff-markers/tuple-struct.stderr
new file mode 100644
index 000000000..d673db898
--- /dev/null
+++ b/tests/ui/parser/diff-markers/tuple-struct.stderr
@@ -0,0 +1,18 @@
+error: encountered diff marker
+  --> $DIR/tuple-struct.rs:2:1
+   |
+LL | <<<<<<< HEAD
+   | ^^^^^^^ after this is the code before the merge
+LL |     u8,
+LL | =======
+   | -------
+LL |     i8,
+LL | >>>>>>> branch
+   | ^^^^^^^ above this are the incoming code changes
+   |
+   = help: if you're having merge conflicts after pulling new code, the top section is the code you already had and the bottom section is the remote code
+   = help: if you're in the middle of a rebase, the top section is the code being rebased onto and the bottom section is the code coming from the current commit being rebased
+   = note: for an explanation on these markers from the `git` documentation, visit <https://git-scm.com/book/en/v2/Git-Tools-Advanced-Merging#_checking_out_conflicts>
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/diff-markers/use-statement.rs b/tests/ui/parser/diff-markers/use-statement.rs
new file mode 100644
index 000000000..6306243a5
--- /dev/null
+++ b/tests/ui/parser/diff-markers/use-statement.rs
@@ -0,0 +1,9 @@
+use foo::{
+<<<<<<< HEAD //~ ERROR encountered diff marker
+    bar,
+=======
+    baz,
+>>>>>>> branch
+};
+
+fn main() {}
diff --git a/tests/ui/parser/diff-markers/use-statement.stderr b/tests/ui/parser/diff-markers/use-statement.stderr
new file mode 100644
index 000000000..12e6f57dd
--- /dev/null
+++ b/tests/ui/parser/diff-markers/use-statement.stderr
@@ -0,0 +1,18 @@
+error: encountered diff marker
+  --> $DIR/use-statement.rs:2:1
+   |
+LL | <<<<<<< HEAD
+   | ^^^^^^^ after this is the code before the merge
+LL |     bar,
+LL | =======
+   | -------
+LL |     baz,
+LL | >>>>>>> branch
+   | ^^^^^^^ above this are the incoming code changes
+   |
+   = help: if you're having merge conflicts after pulling new code, the top section is the code you already had and the bottom section is the remote code
+   = help: if you're in the middle of a rebase, the top section is the code being rebased onto and the bottom section is the code coming from the current commit being rebased
+   = note: for an explanation on these markers from the `git` documentation, visit <https://git-scm.com/book/en/v2/Git-Tools-Advanced-Merging#_checking_out_conflicts>
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/do-catch-suggests-try.rs b/tests/ui/parser/do-catch-suggests-try.rs
new file mode 100644
index 000000000..f64568d06
--- /dev/null
+++ b/tests/ui/parser/do-catch-suggests-try.rs
@@ -0,0 +1,10 @@
+#![feature(try_blocks)]
+
+fn main() {
+    let _: Option<()> = do catch {};
+    //~^ ERROR found removed `do catch` syntax
+    //~| replace with the new syntax
+    //~| following RFC #2388, the new non-placeholder syntax is `try`
+
+    let _recovery_witness: () = 1; //~ ERROR mismatched types
+}
diff --git a/tests/ui/parser/do-catch-suggests-try.stderr b/tests/ui/parser/do-catch-suggests-try.stderr
new file mode 100644
index 000000000..cd8907b7e
--- /dev/null
+++ b/tests/ui/parser/do-catch-suggests-try.stderr
@@ -0,0 +1,19 @@
+error: found removed `do catch` syntax
+  --> $DIR/do-catch-suggests-try.rs:4:25
+   |
+LL |     let _: Option<()> = do catch {};
+   |                         ^^^^^^^^ help: replace with the new syntax: `try`
+   |
+   = note: following RFC #2388, the new non-placeholder syntax is `try`
+
+error[E0308]: mismatched types
+  --> $DIR/do-catch-suggests-try.rs:9:33
+   |
+LL |     let _recovery_witness: () = 1;
+   |                            --   ^ expected `()`, found integer
+   |                            |
+   |                            expected due to this
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/parser/do-not-suggest-semicolon-before-array.rs b/tests/ui/parser/do-not-suggest-semicolon-before-array.rs
new file mode 100644
index 000000000..7ebf3f6b0
--- /dev/null
+++ b/tests/ui/parser/do-not-suggest-semicolon-before-array.rs
@@ -0,0 +1,8 @@
+fn foo() {}
+
+fn bar() -> [u8; 2] {
+    foo()
+    [1, 3) //~ ERROR expected one of `.`, `?`, `]`, or an operator, found `,`
+}
+
+fn main() {}
diff --git a/tests/ui/parser/do-not-suggest-semicolon-before-array.stderr b/tests/ui/parser/do-not-suggest-semicolon-before-array.stderr
new file mode 100644
index 000000000..a9dd52632
--- /dev/null
+++ b/tests/ui/parser/do-not-suggest-semicolon-before-array.stderr
@@ -0,0 +1,10 @@
+error: expected one of `.`, `?`, `]`, or an operator, found `,`
+  --> $DIR/do-not-suggest-semicolon-before-array.rs:5:5
+   |
+LL |     [1, 3)
+   |     ^ ^ help: `]` may belong here
+   |     |
+   |     unclosed delimiter
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/do-not-suggest-semicolon-between-macro-without-exclamation-mark-and-array.rs b/tests/ui/parser/do-not-suggest-semicolon-between-macro-without-exclamation-mark-and-array.rs
new file mode 100644
index 000000000..d6f798181
--- /dev/null
+++ b/tests/ui/parser/do-not-suggest-semicolon-between-macro-without-exclamation-mark-and-array.rs
@@ -0,0 +1,3 @@
+fn main() {
+    let _x = vec[1, 2, 3]; //~ ERROR expected one of `.`, `?`, `]`, or an operator
+}
diff --git a/tests/ui/parser/do-not-suggest-semicolon-between-macro-without-exclamation-mark-and-array.stderr b/tests/ui/parser/do-not-suggest-semicolon-between-macro-without-exclamation-mark-and-array.stderr
new file mode 100644
index 000000000..2fe6a28ee
--- /dev/null
+++ b/tests/ui/parser/do-not-suggest-semicolon-between-macro-without-exclamation-mark-and-array.stderr
@@ -0,0 +1,8 @@
+error: expected one of `.`, `?`, `]`, or an operator, found `,`
+  --> $DIR/do-not-suggest-semicolon-between-macro-without-exclamation-mark-and-array.rs:2:19
+   |
+LL |     let _x = vec[1, 2, 3];
+   |                   ^ expected one of `.`, `?`, `]`, or an operator
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/doc-after-struct-field.rs b/tests/ui/parser/doc-after-struct-field.rs
new file mode 100644
index 000000000..03faa6733
--- /dev/null
+++ b/tests/ui/parser/doc-after-struct-field.rs
@@ -0,0 +1,16 @@
+struct X {
+    a: u8 /** document a */,
+    //~^ ERROR found a documentation comment that doesn't document anything
+    //~| HELP if a comment was intended use `//`
+}
+
+struct Y {
+    a: u8 /// document a
+    //~^ ERROR found a documentation comment that doesn't document anything
+    //~| HELP if a comment was intended use `//`
+}
+
+fn main() {
+    let x = X { a: 1 };
+    let y = Y { a: 1 };
+}
diff --git a/tests/ui/parser/doc-after-struct-field.stderr b/tests/ui/parser/doc-after-struct-field.stderr
new file mode 100644
index 000000000..ae177f1a2
--- /dev/null
+++ b/tests/ui/parser/doc-after-struct-field.stderr
@@ -0,0 +1,19 @@
+error[E0585]: found a documentation comment that doesn't document anything
+  --> $DIR/doc-after-struct-field.rs:2:11
+   |
+LL |     a: u8 /** document a */,
+   |           ^^^^^^^^^^^^^^^^^
+   |
+   = help: doc comments must come before what they document, if a comment was intended use `//`
+
+error[E0585]: found a documentation comment that doesn't document anything
+  --> $DIR/doc-after-struct-field.rs:8:11
+   |
+LL |     a: u8 /// document a
+   |           ^^^^^^^^^^^^^^
+   |
+   = help: doc comments must come before what they document, if a comment was intended use `//`
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0585`.
diff --git a/tests/ui/parser/doc-before-attr.rs b/tests/ui/parser/doc-before-attr.rs
new file mode 100644
index 000000000..c4125a09f
--- /dev/null
+++ b/tests/ui/parser/doc-before-attr.rs
@@ -0,0 +1,4 @@
+fn main() {}
+
+/// hi
+#[derive(Debug)] //~ERROR expected item after attributes
diff --git a/tests/ui/parser/doc-before-attr.stderr b/tests/ui/parser/doc-before-attr.stderr
new file mode 100644
index 000000000..14fd01af2
--- /dev/null
+++ b/tests/ui/parser/doc-before-attr.stderr
@@ -0,0 +1,10 @@
+error: expected item after attributes
+  --> $DIR/doc-before-attr.rs:4:1
+   |
+LL | /// hi
+   | ------ other attributes here
+LL | #[derive(Debug)]
+   | ^^^^^^^^^^^^^^^^
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/doc-before-eof.rs b/tests/ui/parser/doc-before-eof.rs
new file mode 100644
index 000000000..b31836e95
--- /dev/null
+++ b/tests/ui/parser/doc-before-eof.rs
@@ -0,0 +1,3 @@
+fn main() {}
+
+/// hi //~ERROR expected item after doc comment
diff --git a/tests/ui/parser/doc-before-eof.stderr b/tests/ui/parser/doc-before-eof.stderr
new file mode 100644
index 000000000..827566267
--- /dev/null
+++ b/tests/ui/parser/doc-before-eof.stderr
@@ -0,0 +1,8 @@
+error: expected item after doc comment
+  --> $DIR/doc-before-eof.rs:3:1
+   |
+LL | /// hi
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this doc comment doesn't document anything
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/doc-before-extern-rbrace.rs b/tests/ui/parser/doc-before-extern-rbrace.rs
new file mode 100644
index 000000000..515c90ed4
--- /dev/null
+++ b/tests/ui/parser/doc-before-extern-rbrace.rs
@@ -0,0 +1,6 @@
+fn main() {}
+
+extern "C" {
+    /// hi
+    //~^ ERROR found a documentation comment that doesn't document anything
+}
diff --git a/tests/ui/parser/doc-before-extern-rbrace.stderr b/tests/ui/parser/doc-before-extern-rbrace.stderr
new file mode 100644
index 000000000..8fa12ec26
--- /dev/null
+++ b/tests/ui/parser/doc-before-extern-rbrace.stderr
@@ -0,0 +1,11 @@
+error[E0584]: found a documentation comment that doesn't document anything
+  --> $DIR/doc-before-extern-rbrace.rs:4:5
+   |
+LL |     /// hi
+   |     ^^^^^^ this doc comment doesn't document anything
+   |
+   = help: doc comments must come before what they document, if a comment was intended use `//`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0584`.
diff --git a/tests/ui/parser/doc-before-fn-rbrace.rs b/tests/ui/parser/doc-before-fn-rbrace.rs
new file mode 100644
index 000000000..c85021648
--- /dev/null
+++ b/tests/ui/parser/doc-before-fn-rbrace.rs
@@ -0,0 +1,5 @@
+fn main() {
+    /// document
+    //~^ ERROR found a documentation comment that doesn't document anything
+    //~| HELP if a comment was intended use `//`
+}
diff --git a/tests/ui/parser/doc-before-fn-rbrace.stderr b/tests/ui/parser/doc-before-fn-rbrace.stderr
new file mode 100644
index 000000000..6ea68e42b
--- /dev/null
+++ b/tests/ui/parser/doc-before-fn-rbrace.stderr
@@ -0,0 +1,11 @@
+error[E0585]: found a documentation comment that doesn't document anything
+  --> $DIR/doc-before-fn-rbrace.rs:2:5
+   |
+LL |     /// document
+   |     ^^^^^^^^^^^^
+   |
+   = help: doc comments must come before what they document, if a comment was intended use `//`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0585`.
diff --git a/tests/ui/parser/doc-before-identifier.rs b/tests/ui/parser/doc-before-identifier.rs
new file mode 100644
index 000000000..76263ad92
--- /dev/null
+++ b/tests/ui/parser/doc-before-identifier.rs
@@ -0,0 +1,7 @@
+fn /// document
+foo() {}
+//~^^ ERROR expected identifier, found doc comment `/// document`
+
+fn main() {
+    foo();
+}
diff --git a/tests/ui/parser/doc-before-identifier.stderr b/tests/ui/parser/doc-before-identifier.stderr
new file mode 100644
index 000000000..940d293b6
--- /dev/null
+++ b/tests/ui/parser/doc-before-identifier.stderr
@@ -0,0 +1,8 @@
+error: expected identifier, found doc comment `/// document`
+  --> $DIR/doc-before-identifier.rs:1:4
+   |
+LL | fn /// document
+   |    ^^^^^^^^^^^^ expected identifier, found doc comment
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/doc-before-mod-rbrace.rs b/tests/ui/parser/doc-before-mod-rbrace.rs
new file mode 100644
index 000000000..c65a0a931
--- /dev/null
+++ b/tests/ui/parser/doc-before-mod-rbrace.rs
@@ -0,0 +1,6 @@
+mod Foo {
+    /// document
+    //~^ ERROR expected item after doc comment
+}
+
+fn main() {}
diff --git a/tests/ui/parser/doc-before-mod-rbrace.stderr b/tests/ui/parser/doc-before-mod-rbrace.stderr
new file mode 100644
index 000000000..d5749c66c
--- /dev/null
+++ b/tests/ui/parser/doc-before-mod-rbrace.stderr
@@ -0,0 +1,8 @@
+error: expected item after doc comment
+  --> $DIR/doc-before-mod-rbrace.rs:2:5
+   |
+LL |     /// document
+   |     ^^^^^^^^^^^^ this doc comment doesn't document anything
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/doc-before-rbrace.rs b/tests/ui/parser/doc-before-rbrace.rs
new file mode 100644
index 000000000..570306f2c
--- /dev/null
+++ b/tests/ui/parser/doc-before-rbrace.rs
@@ -0,0 +1,5 @@
+fn main() {
+    println!("Hi"); /// hi
+    //~^ ERROR found a documentation comment that doesn't document anything
+    //~| HELP if a comment was intended use `//`
+}
diff --git a/tests/ui/parser/doc-before-rbrace.stderr b/tests/ui/parser/doc-before-rbrace.stderr
new file mode 100644
index 000000000..4d4741dfe
--- /dev/null
+++ b/tests/ui/parser/doc-before-rbrace.stderr
@@ -0,0 +1,11 @@
+error[E0585]: found a documentation comment that doesn't document anything
+  --> $DIR/doc-before-rbrace.rs:2:21
+   |
+LL |     println!("Hi"); /// hi
+   |                     ^^^^^^
+   |
+   = help: doc comments must come before what they document, if a comment was intended use `//`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0585`.
diff --git a/tests/ui/parser/doc-before-semi.rs b/tests/ui/parser/doc-before-semi.rs
new file mode 100644
index 000000000..444b5874e
--- /dev/null
+++ b/tests/ui/parser/doc-before-semi.rs
@@ -0,0 +1,6 @@
+fn main() {
+    /// hi
+    //~^ ERROR found a documentation comment that doesn't document anything
+    //~| HELP if a comment was intended use `//`
+    ;
+}
diff --git a/tests/ui/parser/doc-before-semi.stderr b/tests/ui/parser/doc-before-semi.stderr
new file mode 100644
index 000000000..a879e13ff
--- /dev/null
+++ b/tests/ui/parser/doc-before-semi.stderr
@@ -0,0 +1,11 @@
+error[E0585]: found a documentation comment that doesn't document anything
+  --> $DIR/doc-before-semi.rs:2:5
+   |
+LL |     /// hi
+   |     ^^^^^^
+   |
+   = help: doc comments must come before what they document, if a comment was intended use `//`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0585`.
diff --git a/tests/ui/parser/doc-before-struct-rbrace-1.rs b/tests/ui/parser/doc-before-struct-rbrace-1.rs
new file mode 100644
index 000000000..0c8d90c3b
--- /dev/null
+++ b/tests/ui/parser/doc-before-struct-rbrace-1.rs
@@ -0,0 +1,10 @@
+struct X {
+    a: u8,
+    /// document
+    //~^ ERROR found a documentation comment that doesn't document anything
+    //~| HELP if a comment was intended use `//`
+}
+
+fn main() {
+    let y = X {a: 1};
+}
diff --git a/tests/ui/parser/doc-before-struct-rbrace-1.stderr b/tests/ui/parser/doc-before-struct-rbrace-1.stderr
new file mode 100644
index 000000000..94934f734
--- /dev/null
+++ b/tests/ui/parser/doc-before-struct-rbrace-1.stderr
@@ -0,0 +1,14 @@
+error[E0585]: found a documentation comment that doesn't document anything
+  --> $DIR/doc-before-struct-rbrace-1.rs:3:5
+   |
+LL | struct X {
+   |        - while parsing this struct
+LL |     a: u8,
+LL |     /// document
+   |     ^^^^^^^^^^^^
+   |
+   = help: doc comments must come before what they document, if a comment was intended use `//`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0585`.
diff --git a/tests/ui/parser/doc-before-struct-rbrace-2.rs b/tests/ui/parser/doc-before-struct-rbrace-2.rs
new file mode 100644
index 000000000..2b2aadf79
--- /dev/null
+++ b/tests/ui/parser/doc-before-struct-rbrace-2.rs
@@ -0,0 +1,9 @@
+struct X {
+    a: u8 /// document
+    //~^ ERROR found a documentation comment that doesn't document anything
+    //~| HELP if a comment was intended use `//`
+}
+
+fn main() {
+    let y = X {a: 1};
+}
diff --git a/tests/ui/parser/doc-before-struct-rbrace-2.stderr b/tests/ui/parser/doc-before-struct-rbrace-2.stderr
new file mode 100644
index 000000000..6b5c8c1f8
--- /dev/null
+++ b/tests/ui/parser/doc-before-struct-rbrace-2.stderr
@@ -0,0 +1,11 @@
+error[E0585]: found a documentation comment that doesn't document anything
+  --> $DIR/doc-before-struct-rbrace-2.rs:2:11
+   |
+LL |     a: u8 /// document
+   |           ^^^^^^^^^^^^
+   |
+   = help: doc comments must come before what they document, if a comment was intended use `//`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0585`.
diff --git a/tests/ui/parser/doc-comment-in-if-statement.rs b/tests/ui/parser/doc-comment-in-if-statement.rs
new file mode 100644
index 000000000..343eac1b8
--- /dev/null
+++ b/tests/ui/parser/doc-comment-in-if-statement.rs
@@ -0,0 +1,5 @@
+fn main() {
+    if true /*!*/ {}
+    //~^ ERROR outer attributes are not allowed on
+    //~| ERROR expected outer doc comment
+}
diff --git a/tests/ui/parser/doc-comment-in-if-statement.stderr b/tests/ui/parser/doc-comment-in-if-statement.stderr
new file mode 100644
index 000000000..fc0bc5073
--- /dev/null
+++ b/tests/ui/parser/doc-comment-in-if-statement.stderr
@@ -0,0 +1,25 @@
+error[E0753]: expected outer doc comment
+  --> $DIR/doc-comment-in-if-statement.rs:2:13
+   |
+LL |     if true /*!*/ {}
+   |             ^^^^^
+   |
+   = note: inner doc comments like this (starting with `//!` or `/*!`) can only appear before items
+help: you might have meant to write a regular comment
+   |
+LL -     if true /*!*/ {}
+LL +     if true /**/ {}
+   |
+
+error: outer attributes are not allowed on `if` and `else` branches
+  --> $DIR/doc-comment-in-if-statement.rs:2:13
+   |
+LL |     if true /*!*/ {}
+   |     --      ^^^^^ -- the attributes are attached to this branch
+   |     |       |
+   |     |       help: remove the attributes
+   |     the branch belongs to this `if`
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0753`.
diff --git a/tests/ui/parser/doc-comment-in-stmt.rs b/tests/ui/parser/doc-comment-in-stmt.rs
new file mode 100644
index 000000000..b02df1321
--- /dev/null
+++ b/tests/ui/parser/doc-comment-in-stmt.rs
@@ -0,0 +1,20 @@
+fn foo() -> bool {
+    false
+    //!self.allow_ty_infer()
+    //~^ ERROR found doc comment
+}
+
+fn bar() -> bool {
+    false
+    /*! bar */ //~ ERROR found doc comment
+}
+
+fn baz() -> i32 {
+    1 /** baz */ //~ ERROR found doc comment
+}
+
+fn quux() -> i32 {
+    2 /*! quux */ //~ ERROR found doc comment
+}
+
+fn main() {}
diff --git a/tests/ui/parser/doc-comment-in-stmt.stderr b/tests/ui/parser/doc-comment-in-stmt.stderr
new file mode 100644
index 000000000..febfb600c
--- /dev/null
+++ b/tests/ui/parser/doc-comment-in-stmt.stderr
@@ -0,0 +1,50 @@
+error: expected one of `.`, `;`, `?`, `}`, or an operator, found doc comment `//!self.allow_ty_infer()`
+  --> $DIR/doc-comment-in-stmt.rs:3:5
+   |
+LL |     false
+   |          - expected one of `.`, `;`, `?`, `}`, or an operator
+LL |     //!self.allow_ty_infer()
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^ unexpected token
+   |
+help: add a space before `!` to use a regular comment
+   |
+LL |     // !self.allow_ty_infer()
+   |     ~~~~
+
+error: expected one of `.`, `;`, `?`, `}`, or an operator, found doc comment `/*! bar */`
+  --> $DIR/doc-comment-in-stmt.rs:9:5
+   |
+LL |     false
+   |          - expected one of `.`, `;`, `?`, `}`, or an operator
+LL |     /*! bar */
+   |     ^^^^^^^^^^ unexpected token
+   |
+help: add a space before `!` to use a regular comment
+   |
+LL |     /* ! bar */
+   |     ~~~~
+
+error: expected one of `.`, `;`, `?`, `}`, or an operator, found doc comment `/** baz */`
+  --> $DIR/doc-comment-in-stmt.rs:13:7
+   |
+LL |     1 /** baz */
+   |       ^^^^^^^^^^ expected one of `.`, `;`, `?`, `}`, or an operator
+   |
+help: add a space before `*` to use a regular comment
+   |
+LL |     1 /* * baz */
+   |       ~~~~
+
+error: expected one of `.`, `;`, `?`, `}`, or an operator, found doc comment `/*! quux */`
+  --> $DIR/doc-comment-in-stmt.rs:17:7
+   |
+LL |     2 /*! quux */
+   |       ^^^^^^^^^^^ expected one of `.`, `;`, `?`, `}`, or an operator
+   |
+help: add a space before `!` to use a regular comment
+   |
+LL |     2 /* ! quux */
+   |       ~~~~
+
+error: aborting due to 4 previous errors
+
diff --git a/tests/ui/parser/doc-inside-trait-item.rs b/tests/ui/parser/doc-inside-trait-item.rs
new file mode 100644
index 000000000..87b501bd2
--- /dev/null
+++ b/tests/ui/parser/doc-inside-trait-item.rs
@@ -0,0 +1,6 @@
+trait User{
+    fn test();
+    /// empty doc
+    //~^ ERROR found a documentation comment that doesn't document anything
+}
+fn main() {}
diff --git a/tests/ui/parser/doc-inside-trait-item.stderr b/tests/ui/parser/doc-inside-trait-item.stderr
new file mode 100644
index 000000000..900124adc
--- /dev/null
+++ b/tests/ui/parser/doc-inside-trait-item.stderr
@@ -0,0 +1,11 @@
+error[E0584]: found a documentation comment that doesn't document anything
+  --> $DIR/doc-inside-trait-item.rs:3:5
+   |
+LL |     /// empty doc
+   |     ^^^^^^^^^^^^^ this doc comment doesn't document anything
+   |
+   = help: doc comments must come before what they document, if a comment was intended use `//`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0584`.
diff --git a/tests/ui/parser/dotdotdot-expr.rs b/tests/ui/parser/dotdotdot-expr.rs
new file mode 100644
index 000000000..d842fb6e0
--- /dev/null
+++ b/tests/ui/parser/dotdotdot-expr.rs
@@ -0,0 +1,4 @@
+fn main() {
+    let _redemptive = 1...21;
+    //~^ ERROR unexpected token
+}
diff --git a/tests/ui/parser/dotdotdot-expr.stderr b/tests/ui/parser/dotdotdot-expr.stderr
new file mode 100644
index 000000000..e7203f24d
--- /dev/null
+++ b/tests/ui/parser/dotdotdot-expr.stderr
@@ -0,0 +1,17 @@
+error: unexpected token: `...`
+  --> $DIR/dotdotdot-expr.rs:2:24
+   |
+LL |     let _redemptive = 1...21;
+   |                        ^^^
+   |
+help: use `..` for an exclusive range
+   |
+LL |     let _redemptive = 1..21;
+   |                        ~~
+help: or `..=` for an inclusive range
+   |
+LL |     let _redemptive = 1..=21;
+   |                        ~~~
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/double-pointer.rs b/tests/ui/parser/double-pointer.rs
new file mode 100644
index 000000000..54d34db4a
--- /dev/null
+++ b/tests/ui/parser/double-pointer.rs
@@ -0,0 +1,7 @@
+fn main() {
+    let x: i32 = 5;
+    let ptr: *const i32 = &x;
+    let dptr: **const i32 = &ptr;
+    //~^ ERROR expected `mut` or `const` keyword in raw pointer type
+    //~| HELP add `mut` or `const` here
+}
diff --git a/tests/ui/parser/double-pointer.stderr b/tests/ui/parser/double-pointer.stderr
new file mode 100644
index 000000000..28037f932
--- /dev/null
+++ b/tests/ui/parser/double-pointer.stderr
@@ -0,0 +1,15 @@
+error: expected `mut` or `const` keyword in raw pointer type
+  --> $DIR/double-pointer.rs:4:15
+   |
+LL |     let dptr: **const i32 = &ptr;
+   |               ^
+   |
+help: add `mut` or `const` here
+   |
+LL |     let dptr: *const *const i32 = &ptr;
+   |                +++++
+LL |     let dptr: *mut *const i32 = &ptr;
+   |                +++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/duplicate-visibility.rs b/tests/ui/parser/duplicate-visibility.rs
new file mode 100644
index 000000000..54955944c
--- /dev/null
+++ b/tests/ui/parser/duplicate-visibility.rs
@@ -0,0 +1,9 @@
+fn main() {}
+
+extern "C" { //~ NOTE while parsing this item list starting here
+    pub pub fn foo();
+    //~^ ERROR expected one of `(`, `async`, `const`, `default`, `extern`, `fn`, `unsafe`, or `use`, found keyword `pub`
+    //~| NOTE expected one of 8 possible tokens
+    //~| HELP there is already a visibility modifier, remove one
+    //~| NOTE explicit visibility first seen here
+} //~ NOTE the item list ends here
diff --git a/tests/ui/parser/duplicate-visibility.stderr b/tests/ui/parser/duplicate-visibility.stderr
new file mode 100644
index 000000000..8ecebf01f
--- /dev/null
+++ b/tests/ui/parser/duplicate-visibility.stderr
@@ -0,0 +1,22 @@
+error: expected one of `(`, `async`, `const`, `default`, `extern`, `fn`, `unsafe`, or `use`, found keyword `pub`
+  --> $DIR/duplicate-visibility.rs:4:9
+   |
+LL | extern "C" {
+   |            - while parsing this item list starting here
+LL |     pub pub fn foo();
+   |         ^^^
+   |         |
+   |         expected one of 8 possible tokens
+   |         help: there is already a visibility modifier, remove one
+...
+LL | }
+   | - the item list ends here
+   |
+note: explicit visibility first seen here
+  --> $DIR/duplicate-visibility.rs:4:5
+   |
+LL |     pub pub fn foo();
+   |     ^^^
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/duplicate-where-clauses.rs b/tests/ui/parser/duplicate-where-clauses.rs
new file mode 100644
index 000000000..9eb2ffb06
--- /dev/null
+++ b/tests/ui/parser/duplicate-where-clauses.rs
@@ -0,0 +1,19 @@
+struct A where (): Sized where (): Sized {}
+//~^ ERROR cannot define duplicate `where` clauses on an item
+
+fn b() where (): Sized where (): Sized {}
+//~^ ERROR cannot define duplicate `where` clauses on an item
+
+enum C where (): Sized where (): Sized {}
+//~^ ERROR cannot define duplicate `where` clauses on an item
+
+struct D where (): Sized, where (): Sized {}
+//~^ ERROR cannot define duplicate `where` clauses on an item
+
+fn e() where (): Sized, where (): Sized {}
+//~^ ERROR cannot define duplicate `where` clauses on an item
+
+enum F where (): Sized, where (): Sized {}
+//~^ ERROR cannot define duplicate `where` clauses on an item
+
+fn main() {}
diff --git a/tests/ui/parser/duplicate-where-clauses.stderr b/tests/ui/parser/duplicate-where-clauses.stderr
new file mode 100644
index 000000000..8250d4f1e
--- /dev/null
+++ b/tests/ui/parser/duplicate-where-clauses.stderr
@@ -0,0 +1,80 @@
+error: cannot define duplicate `where` clauses on an item
+  --> $DIR/duplicate-where-clauses.rs:1:32
+   |
+LL | struct A where (): Sized where (): Sized {}
+   |                -               ^
+   |                |
+   |                previous `where` clause starts here
+   |
+help: consider joining the two `where` clauses into one
+   |
+LL | struct A where (): Sized, (): Sized {}
+   |                         ~
+
+error: cannot define duplicate `where` clauses on an item
+  --> $DIR/duplicate-where-clauses.rs:4:30
+   |
+LL | fn b() where (): Sized where (): Sized {}
+   |              -               ^
+   |              |
+   |              previous `where` clause starts here
+   |
+help: consider joining the two `where` clauses into one
+   |
+LL | fn b() where (): Sized, (): Sized {}
+   |                       ~
+
+error: cannot define duplicate `where` clauses on an item
+  --> $DIR/duplicate-where-clauses.rs:7:30
+   |
+LL | enum C where (): Sized where (): Sized {}
+   |              -               ^
+   |              |
+   |              previous `where` clause starts here
+   |
+help: consider joining the two `where` clauses into one
+   |
+LL | enum C where (): Sized, (): Sized {}
+   |                       ~
+
+error: cannot define duplicate `where` clauses on an item
+  --> $DIR/duplicate-where-clauses.rs:10:33
+   |
+LL | struct D where (): Sized, where (): Sized {}
+   |                -                ^
+   |                |
+   |                previous `where` clause starts here
+   |
+help: consider joining the two `where` clauses into one
+   |
+LL | struct D where (): Sized, (): Sized {}
+   |                         ~
+
+error: cannot define duplicate `where` clauses on an item
+  --> $DIR/duplicate-where-clauses.rs:13:31
+   |
+LL | fn e() where (): Sized, where (): Sized {}
+   |              -                ^
+   |              |
+   |              previous `where` clause starts here
+   |
+help: consider joining the two `where` clauses into one
+   |
+LL | fn e() where (): Sized, (): Sized {}
+   |                       ~
+
+error: cannot define duplicate `where` clauses on an item
+  --> $DIR/duplicate-where-clauses.rs:16:31
+   |
+LL | enum F where (): Sized, where (): Sized {}
+   |              -                ^
+   |              |
+   |              previous `where` clause starts here
+   |
+help: consider joining the two `where` clauses into one
+   |
+LL | enum F where (): Sized, (): Sized {}
+   |                       ~
+
+error: aborting due to 6 previous errors
+
diff --git a/tests/ui/parser/dyn-trait-compatibility.rs b/tests/ui/parser/dyn-trait-compatibility.rs
new file mode 100644
index 000000000..d2b02cc2a
--- /dev/null
+++ b/tests/ui/parser/dyn-trait-compatibility.rs
@@ -0,0 +1,14 @@
+type A0 = dyn;
+//~^ ERROR cannot find type `dyn` in this scope
+type A1 = dyn::dyn;
+//~^ ERROR use of undeclared crate or module `dyn`
+type A2 = dyn<dyn, dyn>;
+//~^ ERROR cannot find type `dyn` in this scope
+//~| ERROR cannot find type `dyn` in this scope
+//~| ERROR cannot find type `dyn` in this scope
+type A3 = dyn<<dyn as dyn>::dyn>;
+//~^ ERROR cannot find type `dyn` in this scope
+//~| ERROR cannot find type `dyn` in this scope
+//~| ERROR use of undeclared crate or module `dyn`
+
+fn main() {}
diff --git a/tests/ui/parser/dyn-trait-compatibility.stderr b/tests/ui/parser/dyn-trait-compatibility.stderr
new file mode 100644
index 000000000..0cae01bd1
--- /dev/null
+++ b/tests/ui/parser/dyn-trait-compatibility.stderr
@@ -0,0 +1,52 @@
+error[E0433]: failed to resolve: use of undeclared crate or module `dyn`
+  --> $DIR/dyn-trait-compatibility.rs:3:11
+   |
+LL | type A1 = dyn::dyn;
+   |           ^^^ use of undeclared crate or module `dyn`
+
+error[E0433]: failed to resolve: use of undeclared crate or module `dyn`
+  --> $DIR/dyn-trait-compatibility.rs:9:23
+   |
+LL | type A3 = dyn<<dyn as dyn>::dyn>;
+   |                       ^^^ use of undeclared crate or module `dyn`
+
+error[E0412]: cannot find type `dyn` in this scope
+  --> $DIR/dyn-trait-compatibility.rs:1:11
+   |
+LL | type A0 = dyn;
+   |           ^^^ not found in this scope
+
+error[E0412]: cannot find type `dyn` in this scope
+  --> $DIR/dyn-trait-compatibility.rs:5:11
+   |
+LL | type A2 = dyn<dyn, dyn>;
+   |           ^^^ not found in this scope
+
+error[E0412]: cannot find type `dyn` in this scope
+  --> $DIR/dyn-trait-compatibility.rs:5:15
+   |
+LL | type A2 = dyn<dyn, dyn>;
+   |               ^^^ not found in this scope
+
+error[E0412]: cannot find type `dyn` in this scope
+  --> $DIR/dyn-trait-compatibility.rs:5:20
+   |
+LL | type A2 = dyn<dyn, dyn>;
+   |                    ^^^ not found in this scope
+
+error[E0412]: cannot find type `dyn` in this scope
+  --> $DIR/dyn-trait-compatibility.rs:9:11
+   |
+LL | type A3 = dyn<<dyn as dyn>::dyn>;
+   |           ^^^ not found in this scope
+
+error[E0412]: cannot find type `dyn` in this scope
+  --> $DIR/dyn-trait-compatibility.rs:9:16
+   |
+LL | type A3 = dyn<<dyn as dyn>::dyn>;
+   |                ^^^ not found in this scope
+
+error: aborting due to 8 previous errors
+
+Some errors have detailed explanations: E0412, E0433.
+For more information about an error, try `rustc --explain E0412`.
diff --git a/tests/ui/parser/else-no-if.rs b/tests/ui/parser/else-no-if.rs
new file mode 100644
index 000000000..f0b40ecde
--- /dev/null
+++ b/tests/ui/parser/else-no-if.rs
@@ -0,0 +1,32 @@
+fn foo() {
+    if true {
+    } else false {
+    //~^ ERROR expected `{`, found keyword `false`
+    }
+}
+
+fn foo2() {
+    if true {
+    } else falsy() {
+    //~^ ERROR expected `{`, found `falsy`
+    }
+}
+
+fn foo3() {
+    if true {
+    } else falsy();
+    //~^ ERROR expected `{`, found `falsy`
+}
+
+fn foo4() {
+    if true {
+    } else loop{}
+    //~^ ERROR expected `{`, found keyword `loop`
+    {}
+}
+
+fn falsy() -> bool {
+    false
+}
+
+fn main() {}
diff --git a/tests/ui/parser/else-no-if.stderr b/tests/ui/parser/else-no-if.stderr
new file mode 100644
index 000000000..b9c1a7527
--- /dev/null
+++ b/tests/ui/parser/else-no-if.stderr
@@ -0,0 +1,50 @@
+error: expected `{`, found keyword `false`
+  --> $DIR/else-no-if.rs:3:12
+   |
+LL |     } else false {
+   |       ---- ^^^^^
+   |       |
+   |       expected an `if` or a block after this `else`
+   |
+help: add an `if` if this is the condition of a chained `else if` statement
+   |
+LL |     } else if false {
+   |            ++
+
+error: expected `{`, found `falsy`
+  --> $DIR/else-no-if.rs:10:12
+   |
+LL |     } else falsy() {
+   |       ---- ^^^^^
+   |       |
+   |       expected an `if` or a block after this `else`
+   |
+help: add an `if` if this is the condition of a chained `else if` statement
+   |
+LL |     } else if falsy() {
+   |            ++
+
+error: expected `{`, found `falsy`
+  --> $DIR/else-no-if.rs:17:12
+   |
+LL |     } else falsy();
+   |            ^^^^^ expected `{`
+   |
+help: try placing this code inside a block
+   |
+LL |     } else { falsy() };
+   |            +         +
+
+error: expected `{`, found keyword `loop`
+  --> $DIR/else-no-if.rs:23:12
+   |
+LL |     } else loop{}
+   |            ^^^^ expected `{`
+   |
+help: try placing this code inside a block
+   |
+LL |     } else { loop{} }
+   |            +        +
+
+error: aborting due to 4 previous errors
+
diff --git a/tests/ui/parser/emoji-identifiers.rs b/tests/ui/parser/emoji-identifiers.rs
new file mode 100644
index 000000000..b50c046bc
--- /dev/null
+++ b/tests/ui/parser/emoji-identifiers.rs
@@ -0,0 +1,19 @@
+struct ABig👩‍👩‍👧‍👧Family; //~ ERROR identifiers cannot contain emoji
+struct 👀; //~ ERROR identifiers cannot contain emoji
+impl 👀 {
+    fn full_of_✨() -> 👀 { //~ ERROR identifiers cannot contain emoji
+        👀
+    }
+}
+fn i_like_to_😅_a_lot() -> 👀 { //~ ERROR identifiers cannot contain emoji
+    👀::full_of✨() //~ ERROR no function or associated item named `full_of✨` found for struct `👀`
+    //~^ ERROR identifiers cannot contain emoji
+}
+fn main() {
+    let _ = i_like_to_😄_a_lot() ➖ 4; //~ ERROR cannot find function `i_like_to_😄_a_lot` in this scope
+    //~^ ERROR identifiers cannot contain emoji
+    //~| ERROR unknown start of token: \u{2796}
+
+    let 🦀 = 1;//~ ERROR Ferris cannot be used as an identifier
+    dbg!(🦀);
+}
diff --git a/tests/ui/parser/emoji-identifiers.stderr b/tests/ui/parser/emoji-identifiers.stderr
new file mode 100644
index 000000000..e645b68ba
--- /dev/null
+++ b/tests/ui/parser/emoji-identifiers.stderr
@@ -0,0 +1,91 @@
+error: unknown start of token: \u{2796}
+  --> $DIR/emoji-identifiers.rs:13:33
+   |
+LL |     let _ = i_like_to_😄_a_lot() ➖ 4;
+   |                                  ^^
+   |
+help: Unicode character '➖' (Heavy Minus Sign) looks like '-' (Minus/Hyphen), but it is not
+   |
+LL |     let _ = i_like_to_😄_a_lot() - 4;
+   |                                  ~
+
+error: Ferris cannot be used as an identifier
+  --> $DIR/emoji-identifiers.rs:17:9
+   |
+LL |     let 🦀 = 1;
+   |         ^^ help: try using their name instead: `ferris`
+LL |     dbg!(🦀);
+   |          ^^
+
+error: identifiers cannot contain emoji: `ABig👩👩👧👧Family`
+  --> $DIR/emoji-identifiers.rs:1:8
+   |
+LL | struct ABig👩👩👧👧Family;
+   |        ^^^^^^^^^^^^^^^^^^
+
+error: identifiers cannot contain emoji: `👀`
+  --> $DIR/emoji-identifiers.rs:2:8
+   |
+LL | struct 👀;
+   |        ^^
+LL | impl 👀 {
+   |      ^^
+LL |     fn full_of_✨() -> 👀 {
+   |                        ^^
+LL |         👀
+   |         ^^
+...
+LL | fn i_like_to_😅_a_lot() -> 👀 {
+   |                            ^^
+LL |     👀::full_of✨()
+   |     ^^
+
+error: identifiers cannot contain emoji: `full_of_✨`
+  --> $DIR/emoji-identifiers.rs:4:8
+   |
+LL |     fn full_of_✨() -> 👀 {
+   |        ^^^^^^^^^^
+
+error: identifiers cannot contain emoji: `i_like_to_😅_a_lot`
+  --> $DIR/emoji-identifiers.rs:8:4
+   |
+LL | fn i_like_to_😅_a_lot() -> 👀 {
+   |    ^^^^^^^^^^^^^^^^^^
+
+error: identifiers cannot contain emoji: `full_of✨`
+  --> $DIR/emoji-identifiers.rs:9:8
+   |
+LL |     👀::full_of✨()
+   |         ^^^^^^^^^
+
+error: identifiers cannot contain emoji: `i_like_to_😄_a_lot`
+  --> $DIR/emoji-identifiers.rs:13:13
+   |
+LL |     let _ = i_like_to_😄_a_lot() ➖ 4;
+   |             ^^^^^^^^^^^^^^^^^^
+
+error[E0599]: no function or associated item named `full_of✨` found for struct `👀` in the current scope
+  --> $DIR/emoji-identifiers.rs:9:8
+   |
+LL | struct 👀;
+   | --------- function or associated item `full_of✨` not found for this struct
+...
+LL |     👀::full_of✨()
+   |         ^^^^^^^^^
+   |         |
+   |         function or associated item not found in `👀`
+   |         help: there is an associated function with a similar name: `full_of_✨`
+
+error[E0425]: cannot find function `i_like_to_😄_a_lot` in this scope
+  --> $DIR/emoji-identifiers.rs:13:13
+   |
+LL | fn i_like_to_😅_a_lot() -> 👀 {
+   | ----------------------------- similarly named function `i_like_to_😅_a_lot` defined here
+...
+LL |     let _ = i_like_to_😄_a_lot() ➖ 4;
+   |             ^^^^^^^^^^^^^^^^^^ help: a function with a similar name exists: `i_like_to_😅_a_lot`
+
+error: aborting due to 10 previous errors
+
+Some errors have detailed explanations: E0425, E0599.
+For more information about an error, try `rustc --explain E0425`.
diff --git a/tests/ui/parser/empty-impl-semicolon.rs b/tests/ui/parser/empty-impl-semicolon.rs
new file mode 100644
index 000000000..2485f5b85
--- /dev/null
+++ b/tests/ui/parser/empty-impl-semicolon.rs
@@ -0,0 +1,4 @@
+struct Foo;
+impl Foo; //~ ERROR expected `{}`, found `;`
+
+fn main() {}
diff --git a/tests/ui/parser/empty-impl-semicolon.stderr b/tests/ui/parser/empty-impl-semicolon.stderr
new file mode 100644
index 000000000..6ed309eba
--- /dev/null
+++ b/tests/ui/parser/empty-impl-semicolon.stderr
@@ -0,0 +1,10 @@
+error: expected `{}`, found `;`
+  --> $DIR/empty-impl-semicolon.rs:2:9
+   |
+LL | impl Foo;
+   |         ^
+   |
+   = help: try using `{}` instead
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/expr-as-stmt-2.rs b/tests/ui/parser/expr-as-stmt-2.rs
new file mode 100644
index 000000000..3a18bdc3b
--- /dev/null
+++ b/tests/ui/parser/expr-as-stmt-2.rs
@@ -0,0 +1,10 @@
+// This is not autofixable because we give extra suggestions to end the first expression with `;`.
+fn foo(a: Option<u32>, b: Option<u32>) -> bool {
+    if let Some(x) = a { true } else { false }
+    //~^ ERROR mismatched types
+    //~| ERROR mismatched types
+    && //~ ERROR mismatched types
+    if let Some(y) = a { true } else { false }
+}
+
+fn main() {}
diff --git a/tests/ui/parser/expr-as-stmt-2.stderr b/tests/ui/parser/expr-as-stmt-2.stderr
new file mode 100644
index 000000000..2b6314c38
--- /dev/null
+++ b/tests/ui/parser/expr-as-stmt-2.stderr
@@ -0,0 +1,46 @@
+error[E0308]: mismatched types
+  --> $DIR/expr-as-stmt-2.rs:3:26
+   |
+LL |     if let Some(x) = a { true } else { false }
+   |     ---------------------^^^^-----------------
+   |     |                    |
+   |     |                    expected `()`, found `bool`
+   |     expected this to be `()`
+   |
+help: you might have meant to return this value
+   |
+LL |     if let Some(x) = a { return true; } else { false }
+   |                          ++++++     +
+
+error[E0308]: mismatched types
+  --> $DIR/expr-as-stmt-2.rs:3:40
+   |
+LL |     if let Some(x) = a { true } else { false }
+   |     -----------------------------------^^^^^--
+   |     |                                  |
+   |     |                                  expected `()`, found `bool`
+   |     expected this to be `()`
+   |
+help: you might have meant to return this value
+   |
+LL |     if let Some(x) = a { true } else { return false; }
+   |                                        ++++++      +
+
+error[E0308]: mismatched types
+  --> $DIR/expr-as-stmt-2.rs:6:5
+   |
+LL |   fn foo(a: Option<u32>, b: Option<u32>) -> bool {
+   |                                             ---- expected `bool` because of return type
+...
+LL | /     &&
+LL | |     if let Some(y) = a { true } else { false }
+   | |______________________________________________^ expected `bool`, found `&&bool`
+   |
+help: parentheses are required to parse this as an expression
+   |
+LL |     (if let Some(x) = a { true } else { false })
+   |     +                                          +
+
+error: aborting due to 3 previous errors
+
+For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/parser/expr-as-stmt.fixed b/tests/ui/parser/expr-as-stmt.fixed
new file mode 100644
index 000000000..b06f62794
--- /dev/null
+++ b/tests/ui/parser/expr-as-stmt.fixed
@@ -0,0 +1,79 @@
+// run-rustfix
+// rustfix-only-machine-applicable
+#![allow(unused_variables)]
+#![allow(dead_code)]
+#![allow(unused_must_use)]
+
+fn foo() -> i32 {
+    ({2}) + {2} //~ ERROR expected expression, found `+`
+    //~^ ERROR mismatched types
+}
+
+fn bar() -> i32 {
+    ({2}) + 2 //~ ERROR leading `+` is not supported
+    //~^ ERROR mismatched types
+}
+
+fn zul() -> u32 {
+    let foo = 3;
+    ({ 42 }) + foo; //~ ERROR expected expression, found `+`
+    //~^ ERROR mismatched types
+    32
+}
+
+fn baz() -> i32 {
+    ({ 3 }) * 3 //~ ERROR type `{integer}` cannot be dereferenced
+    //~^ ERROR mismatched types
+}
+
+fn moo(x: u32) -> bool {
+    (match x {
+        _ => 1,
+    }) > 0 //~ ERROR expected expression
+}
+
+fn qux() -> u32 {
+    ({2}) - 2 //~ ERROR cannot apply unary operator `-` to type `u32`
+    //~^ ERROR mismatched types
+}
+
+fn space_cadet() -> bool {
+    ({ true }) | { true } //~ ERROR E0308
+    //~^ ERROR expected parameter name
+}
+
+fn revenge_from_mars() -> bool {
+    ({ true }) && { true } //~ ERROR E0308
+    //~^ ERROR mismatched types
+}
+
+fn attack_from_mars() -> bool {
+    ({ true }) || { true } //~ ERROR E0308
+    //~^ ERROR mismatched types
+}
+
+// This gets corrected by adding a semicolon, instead of parens.
+// It's placed here to help keep track of the way this diagnostic
+// needs to interact with type checking to avoid MachineApplicable
+// suggestions that actually break stuff.
+//
+// If you're wondering what happens if that `foo()` is a `true` like
+// all the ones above use? Nothing. It makes neither suggestion in
+// that case.
+fn asteroids() -> impl FnOnce() -> bool {
+    { foo(); } || { true } //~ ERROR E0308
+}
+
+// https://github.com/rust-lang/rust/issues/105179
+fn r#match() -> i32 {
+    (match () { () => 1 }) + match () { () => 1 } //~ ERROR expected expression, found `+`
+    //~^ ERROR mismatched types
+}
+
+// https://github.com/rust-lang/rust/issues/102171
+fn r#unsafe() -> i32 {
+    (unsafe { 1 }) + unsafe { 1 } //~ ERROR expected expression, found `+`
+    //~^ ERROR mismatched types
+}
+
+fn main() {}
diff --git a/tests/ui/parser/expr-as-stmt.rs b/tests/ui/parser/expr-as-stmt.rs
new file mode 100644
index 000000000..b39d2b886
--- /dev/null
+++ b/tests/ui/parser/expr-as-stmt.rs
@@ -0,0 +1,79 @@
+// run-rustfix
+// rustfix-only-machine-applicable
+#![allow(unused_variables)]
+#![allow(dead_code)]
+#![allow(unused_must_use)]
+
+fn foo() -> i32 {
+    {2} + {2} //~ ERROR expected expression, found `+`
+    //~^ ERROR mismatched types
+}
+
+fn bar() -> i32 {
+    {2} + 2 //~ ERROR leading `+` is not supported
+    //~^ ERROR mismatched types
+}
+
+fn zul() -> u32 {
+    let foo = 3;
+    { 42 } + foo; //~ ERROR expected expression, found `+`
+    //~^ ERROR mismatched types
+    32
+}
+
+fn baz() -> i32 {
+    { 3 } * 3 //~ ERROR type `{integer}` cannot be dereferenced
+    //~^ ERROR mismatched types
+}
+
+fn moo(x: u32) -> bool {
+    match x {
+        _ => 1,
+    } > 0 //~ ERROR expected expression
+}
+
+fn qux() -> u32 {
+    {2} - 2 //~ ERROR cannot apply unary operator `-` to type `u32`
+    //~^ ERROR mismatched types
+}
+
+fn space_cadet() -> bool {
+    { true } | { true } //~ ERROR E0308
+    //~^ ERROR expected parameter name
+}
+
+fn revenge_from_mars() -> bool {
+    { true } && { true } //~ ERROR E0308
+    //~^ ERROR mismatched types
+}
+
+fn attack_from_mars() -> bool {
+    { true } || { true } //~ ERROR E0308
+    //~^ ERROR mismatched types
+}
+
+// This gets corrected by adding a semicolon, instead of parens.
+// It's placed here to help keep track of the way this diagnostic
+// needs to interact with type checking to avoid MachineApplicable
+// suggestions that actually break stuff.
+//
+// If you're wondering what happens if that `foo()` is a `true` like
+// all the ones above use? Nothing. It makes neither suggestion in
+// that case.
+fn asteroids() -> impl FnOnce() -> bool {
+    { foo() } || { true } //~ ERROR E0308
+}
+
+// https://github.com/rust-lang/rust/issues/105179
+fn r#match() -> i32 {
+    match () { () => 1 } + match () { () => 1 } //~ ERROR expected expression, found `+`
+    //~^ ERROR mismatched types
+}
+
+// https://github.com/rust-lang/rust/issues/102171
+fn r#unsafe() -> i32 {
+    unsafe { 1 } + unsafe { 1 } //~ ERROR expected expression, found `+`
+    //~^ ERROR mismatched types
+}
+
+fn main() {}
diff --git a/tests/ui/parser/expr-as-stmt.stderr b/tests/ui/parser/expr-as-stmt.stderr
new file mode 100644
index 000000000..18c8b0b7c
--- /dev/null
+++ b/tests/ui/parser/expr-as-stmt.stderr
@@ -0,0 +1,248 @@
+error: expected expression, found `+`
+  --> $DIR/expr-as-stmt.rs:8:9
+   |
+LL |     {2} + {2}
+   |         ^ expected expression
+   |
+help: parentheses are required to parse this as an expression
+   |
+LL |     ({2}) + {2}
+   |     +   +
+
+error: leading `+` is not supported
+  --> $DIR/expr-as-stmt.rs:13:9
+   |
+LL |     {2} + 2
+   |         ^ unexpected `+`
+   |
+help: parentheses are required to parse this as an expression
+   |
+LL |     ({2}) + 2
+   |     +   +
+
+error: expected expression, found `+`
+  --> $DIR/expr-as-stmt.rs:19:12
+   |
+LL |     { 42 } + foo;
+   |            ^ expected expression
+   |
+help: parentheses are required to parse this as an expression
+   |
+LL |     ({ 42 }) + foo;
+   |     +      +
+
+error: expected expression, found `>`
+  --> $DIR/expr-as-stmt.rs:32:7
+   |
+LL |     } > 0
+   |       ^ expected expression
+   |
+help: parentheses are required to parse this as an expression
+   |
+LL ~     (match x {
+LL |         _ => 1,
+LL ~     }) > 0
+   |
+
+error: expected parameter name, found `{`
+  --> $DIR/expr-as-stmt.rs:41:16
+   |
+LL |     { true } | { true }
+   |                ^ expected parameter name
+   |
+help: parentheses are required to parse this as an expression
+   |
+LL |     ({ true }) | { true }
+   |     +        +
+
+error: expected expression, found `+`
+  --> $DIR/expr-as-stmt.rs:69:26
+   |
+LL |     match () { () => 1 } + match () { () => 1 }
+   |                          ^ expected expression
+   |
+help: parentheses are required to parse this as an expression
+   |
+LL |     (match () { () => 1 }) + match () { () => 1 }
+   |     +                    +
+
+error: expected expression, found `+`
+  --> $DIR/expr-as-stmt.rs:75:18
+   |
+LL |     unsafe { 1 } + unsafe { 1 }
+   |                  ^ expected expression
+   |
+help: parentheses are required to parse this as an expression
+   |
+LL |     (unsafe { 1 }) + unsafe { 1 }
+   |     +            +
+
+error[E0308]: mismatched types
+  --> $DIR/expr-as-stmt.rs:64:7
+   |
+LL |     { foo() } || { true }
+   |       ^^^^^- help: consider using a semicolon here: `;`
+   |       |
+   |       expected `()`, found `i32`
+
+error[E0308]: mismatched types
+  --> $DIR/expr-as-stmt.rs:8:6
+   |
+LL |     {2} + {2}
+   |      ^ expected `()`, found integer
+   |
+help: you might have meant to return this value
+   |
+LL |     {return 2;} + {2}
+   |      ++++++  +
+
+error[E0308]: mismatched types
+  --> $DIR/expr-as-stmt.rs:13:6
+   |
+LL |     {2} + 2
+   |      ^ expected `()`, found integer
+   |
+help: you might have meant to return this value
+   |
+LL |     {return 2;} + 2
+   |      ++++++  +
+
+error[E0308]: mismatched types
+  --> $DIR/expr-as-stmt.rs:19:7
+   |
+LL |     { 42 } + foo;
+   |       ^^ expected `()`, found integer
+   |
+help: you might have meant to return this value
+   |
+LL |     { return 42; } + foo;
+   |       ++++++   +
+
+error[E0308]: mismatched types
+  --> $DIR/expr-as-stmt.rs:25:7
+   |
+LL |     { 3 } * 3
+   |       ^ expected `()`, found integer
+   |
+help: you might have meant to return this value
+   |
+LL |     { return 3; } * 3
+   |       ++++++  +
+
+error[E0614]: type `{integer}` cannot be dereferenced
+  --> $DIR/expr-as-stmt.rs:25:11
+   |
+LL |     { 3 } * 3
+   |           ^^^
+   |
+help: parentheses are required to parse this as an expression
+   |
+LL |     ({ 3 }) * 3
+   |     +     +
+
+error[E0308]: mismatched types
+  --> $DIR/expr-as-stmt.rs:36:6
+   |
+LL |     {2} - 2
+   |      ^ expected `()`, found integer
+   |
+help: you might have meant to return this value
+   |
+LL |     {return 2;} - 2
+   |      ++++++  +
+
+error[E0600]: cannot apply unary operator `-` to type `u32`
+  --> $DIR/expr-as-stmt.rs:36:9
+   |
+LL |     {2} - 2
+   |         ^^^ cannot apply unary operator `-`
+   |
+help: parentheses are required to parse this as an expression
+   |
+LL |     ({2}) - 2
+   |     +   +
+
+error[E0308]: mismatched types
+  --> $DIR/expr-as-stmt.rs:41:7
+   |
+LL |     { true } | { true }
+   |       ^^^^ expected `()`, found `bool`
+   |
+help: you might have meant to return this value
+   |
+LL |     { return true; } | { true }
+   |       ++++++     +
+
+error[E0308]: mismatched types
+  --> $DIR/expr-as-stmt.rs:46:7
+   |
+LL |     { true } && { true }
+   |       ^^^^ expected `()`, found `bool`
+   |
+help: you might have meant to return this value
+   |
+LL |     { return true; } && { true }
+   |       ++++++     +
+
+error[E0308]: mismatched types
+  --> $DIR/expr-as-stmt.rs:46:14
+   |
+LL | fn revenge_from_mars() -> bool {
+   |                           ---- expected `bool` because of return type
+LL |     { true } && { true }
+   |              ^^^^^^^^^^^ expected `bool`, found `&&bool`
+   |
+help: parentheses are required to parse this as an expression
+   |
+LL |     ({ true }) && { true }
+   |     +        +
+
+error[E0308]: mismatched types
+  --> $DIR/expr-as-stmt.rs:51:7
+   |
+LL |     { true } || { true }
+   |       ^^^^ expected `()`, found `bool`
+   |
+help: you might have meant to return this value
+   |
+LL |     { return true; } || { true }
+   |       ++++++     +
+
+error[E0308]: mismatched types
+  --> $DIR/expr-as-stmt.rs:51:14
+   |
+LL | fn attack_from_mars() -> bool {
+   |                          ---- expected `bool` because of return type
+LL |     { true } || { true }
+   |              ^^^^^^^^^^^ expected `bool`, found closure
+   |
+   = note: expected type `bool`
+           found closure `[closure@$DIR/expr-as-stmt.rs:51:14: 51:16]`
+help: parentheses are required to parse this as an expression
+   |
+LL |     ({ true }) || { true }
+   |     +        +
+
+error[E0308]: mismatched types
+  --> $DIR/expr-as-stmt.rs:69:5
+   |
+LL |     match () { () => 1 } + match () { () => 1 }
+   |     ^^^^^^^^^^^^^^^^^^^^- help: consider using a semicolon here
+   |     |
+   |     expected `()`, found integer
+
+error[E0308]: mismatched types
+  --> $DIR/expr-as-stmt.rs:75:14
+   |
+LL |     unsafe { 1 } + unsafe { 1 }
+   |              ^ expected `()`, found integer
+   |
+help: you might have meant to return this value
+   |
+LL |     unsafe { return 1; } + unsafe { 1 }
+   |              ++++++  +
+
+error: aborting due to 22 previous errors
+
+Some errors have detailed explanations: E0308, E0600, E0614.
+For more information about an error, try `rustc --explain E0308`.
diff --git a/tests/ui/parser/extern-abi-from-mac-literal-frag.rs b/tests/ui/parser/extern-abi-from-mac-literal-frag.rs
new file mode 100644
index 000000000..8f5d7f4f7
--- /dev/null
+++ b/tests/ui/parser/extern-abi-from-mac-literal-frag.rs
@@ -0,0 +1,47 @@
+#![allow(clashing_extern_declarations)]
+// check-pass
+
+// In this test we check that the parser accepts an ABI string when it
+// comes from a macro `literal` or `expr` fragment as opposed to a hardcoded string.
+
+fn main() {}
+
+macro_rules! abi_from_lit_frag {
+    ($abi:literal) => {
+        extern $abi {
+            fn _import();
+        }
+
+        extern $abi fn _export() {}
+
+        type _PTR = extern $abi fn();
+    }
+}
+
+macro_rules! abi_from_expr_frag {
+    ($abi:expr) => {
+        extern $abi {
+            fn _import();
+        }
+
+        extern $abi fn _export() {}
+
+        type _PTR = extern $abi fn();
+    };
+}
+
+mod rust {
+    abi_from_lit_frag!("Rust");
+}
+
+mod c {
+    abi_from_lit_frag!("C");
+}
+
+mod rust_expr {
+    abi_from_expr_frag!("Rust");
+}
+
+mod c_expr {
+    abi_from_expr_frag!("C");
+}
diff --git a/tests/ui/parser/extern-abi-raw-strings.rs b/tests/ui/parser/extern-abi-raw-strings.rs
new file mode 100644
index 000000000..fad855a21
--- /dev/null
+++ b/tests/ui/parser/extern-abi-raw-strings.rs
@@ -0,0 +1,13 @@
+// check-pass
+
+// Check that the string literal in `extern lit` will accept raw strings.
+
+fn main() {}
+
+extern r#"C"# fn foo() {}
+
+extern r#"C"# {
+    fn bar();
+}
+
+type T = extern r#"C"# fn();
diff --git a/tests/ui/parser/extern-abi-string-escaping.rs b/tests/ui/parser/extern-abi-string-escaping.rs
new file mode 100644
index 000000000..87bd31aab
--- /dev/null
+++ b/tests/ui/parser/extern-abi-string-escaping.rs
@@ -0,0 +1,13 @@
+// check-pass
+
+// Check that the string literal in `extern lit` will escapes.
+
+fn main() {}
+
+extern "\x43" fn foo() {}
+
+extern "\x43" {
+    fn bar();
+}
+
+type T = extern "\x43" fn();
diff --git a/tests/ui/parser/extern-abi-syntactic.rs b/tests/ui/parser/extern-abi-syntactic.rs
new file mode 100644
index 000000000..7d2bbfe8a
--- /dev/null
+++ b/tests/ui/parser/extern-abi-syntactic.rs
@@ -0,0 +1,17 @@
+// check-pass
+
+// Check that from the grammar's point of view,
+// the specific set of ABIs is not part of it.
+
+fn main() {}
+
+#[cfg(FALSE)]
+extern "some_abi_that_we_are_sure_does_not_exist_semantically" fn foo() {}
+
+#[cfg(FALSE)]
+extern "some_abi_that_we_are_sure_does_not_exist_semantically" {
+    fn foo();
+}
+
+#[cfg(FALSE)]
+type T = extern "some_abi_that_we_are_sure_does_not_exist_semantically" fn();
diff --git a/tests/ui/parser/extern-crate-async.rs b/tests/ui/parser/extern-crate-async.rs
new file mode 100644
index 000000000..6a54ac7f4
--- /dev/null
+++ b/tests/ui/parser/extern-crate-async.rs
@@ -0,0 +1,12 @@
+// Make sure that we don't parse `extern crate async`
+// the front matter of a function leading us astray.
+
+// check-pass
+
+fn main() {}
+
+#[cfg(FALSE)]
+extern crate async;
+
+#[cfg(FALSE)]
+extern crate async as something_else;
diff --git a/tests/ui/parser/extern-crate-unexpected-token.rs b/tests/ui/parser/extern-crate-unexpected-token.rs
new file mode 100644
index 000000000..7687f5e64
--- /dev/null
+++ b/tests/ui/parser/extern-crate-unexpected-token.rs
@@ -0,0 +1 @@
+extern crte foo; //~ ERROR expected one of `crate` or `{`, found `crte`
diff --git a/tests/ui/parser/extern-crate-unexpected-token.stderr b/tests/ui/parser/extern-crate-unexpected-token.stderr
new file mode 100644
index 000000000..e9d287ac0
--- /dev/null
+++ b/tests/ui/parser/extern-crate-unexpected-token.stderr
@@ -0,0 +1,8 @@
+error: expected one of `crate` or `{`, found `crte`
+  --> $DIR/extern-crate-unexpected-token.rs:1:8
+   |
+LL | extern crte foo;
+   |        ^^^^ expected one of `crate` or `{`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/extern-expected-fn-or-brace.rs b/tests/ui/parser/extern-expected-fn-or-brace.rs
new file mode 100644
index 000000000..1dcea1744
--- /dev/null
+++ b/tests/ui/parser/extern-expected-fn-or-brace.rs
@@ -0,0 +1,3 @@
+// Verifies that the expected token errors for `extern crate` are raised.
+
+extern "C" mod foo; //~ERROR expected `{`, found keyword `mod`
diff --git a/tests/ui/parser/extern-expected-fn-or-brace.stderr b/tests/ui/parser/extern-expected-fn-or-brace.stderr
new file mode 100644
index 000000000..258a2c268
--- /dev/null
+++ b/tests/ui/parser/extern-expected-fn-or-brace.stderr
@@ -0,0 +1,8 @@
+error: expected `{`, found keyword `mod`
+  --> $DIR/extern-expected-fn-or-brace.rs:3:12
+   |
+LL | extern "C" mod foo;
+   |            ^^^ expected `{`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/extern-foreign-crate.rs b/tests/ui/parser/extern-foreign-crate.rs
new file mode 100644
index 000000000..a5da77dc7
--- /dev/null
+++ b/tests/ui/parser/extern-foreign-crate.rs
@@ -0,0 +1,4 @@
+// Verifies that the expected token errors for `extern crate` are
+// raised
+
+extern crate foo {} //~ERROR expected one of `;` or `as`, found `{`
diff --git a/tests/ui/parser/extern-foreign-crate.stderr b/tests/ui/parser/extern-foreign-crate.stderr
new file mode 100644
index 000000000..eb75c0fc9
--- /dev/null
+++ b/tests/ui/parser/extern-foreign-crate.stderr
@@ -0,0 +1,8 @@
+error: expected one of `;` or `as`, found `{`
+  --> $DIR/extern-foreign-crate.rs:4:18
+   |
+LL | extern crate foo {}
+   |                  ^ expected one of `;` or `as`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/extern-no-fn.rs b/tests/ui/parser/extern-no-fn.rs
new file mode 100644
index 000000000..73568609c
--- /dev/null
+++ b/tests/ui/parser/extern-no-fn.rs
@@ -0,0 +1,6 @@
+extern "C" {
+    f(); //~ ERROR expected one of `!` or `::`, found `(`
+}
+
+fn main() {
+}
diff --git a/tests/ui/parser/extern-no-fn.stderr b/tests/ui/parser/extern-no-fn.stderr
new file mode 100644
index 000000000..d9183d564
--- /dev/null
+++ b/tests/ui/parser/extern-no-fn.stderr
@@ -0,0 +1,12 @@
+error: expected one of `!` or `::`, found `(`
+  --> $DIR/extern-no-fn.rs:2:6
+   |
+LL | extern "C" {
+   |            - while parsing this item list starting here
+LL |     f();
+   |      ^ expected one of `!` or `::`
+LL | }
+   | - the item list ends here
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/float-field-interpolated.rs b/tests/ui/parser/float-field-interpolated.rs
new file mode 100644
index 000000000..a30532035
--- /dev/null
+++ b/tests/ui/parser/float-field-interpolated.rs
@@ -0,0 +1,17 @@
+struct S(u8, (u8, u8));
+
+macro_rules! generate_field_accesses {
+    ($a:tt, $b:literal, $c:expr) => {
+        let s = S(0, (0, 0));
+
+        s.$a; // OK
+        { s.$b; } //~ ERROR unexpected token: `1.1`
+                  //~| ERROR expected one of `.`, `;`, `?`, `}`, or an operator, found `1.1`
+        { s.$c; } //~ ERROR unexpected token: `1.1`
+                  //~| ERROR expected one of `.`, `;`, `?`, `}`, or an operator, found `1.1`
+    };
+}
+
+fn main() {
+    generate_field_accesses!(1.1, 1.1, 1.1);
+}
diff --git a/tests/ui/parser/float-field-interpolated.stderr b/tests/ui/parser/float-field-interpolated.stderr
new file mode 100644
index 000000000..664adb358
--- /dev/null
+++ b/tests/ui/parser/float-field-interpolated.stderr
@@ -0,0 +1,46 @@
+error: unexpected token: `1.1`
+  --> $DIR/float-field-interpolated.rs:8:13
+   |
+LL |         { s.$b; }
+   |             ^^
+...
+LL |     generate_field_accesses!(1.1, 1.1, 1.1);
+   |     --------------------------------------- in this macro invocation
+   |
+   = note: this error originates in the macro `generate_field_accesses` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: expected one of `.`, `;`, `?`, `}`, or an operator, found `1.1`
+  --> $DIR/float-field-interpolated.rs:8:13
+   |
+LL |         { s.$b; }
+   |             ^^ expected one of `.`, `;`, `?`, `}`, or an operator
+...
+LL |     generate_field_accesses!(1.1, 1.1, 1.1);
+   |     --------------------------------------- in this macro invocation
+   |
+   = note: this error originates in the macro `generate_field_accesses` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: unexpected token: `1.1`
+  --> $DIR/float-field-interpolated.rs:10:13
+   |
+LL |         { s.$c; }
+   |             ^^
+...
+LL |     generate_field_accesses!(1.1, 1.1, 1.1);
+   |     --------------------------------------- in this macro invocation
+   |
+   = note: this error originates in the macro `generate_field_accesses` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: expected one of `.`, `;`, `?`, `}`, or an operator, found `1.1`
+  --> $DIR/float-field-interpolated.rs:10:13
+   |
+LL |         { s.$c; }
+   |             ^^ expected one of `.`, `;`, `?`, `}`, or an operator
+...
+LL |     generate_field_accesses!(1.1, 1.1, 1.1);
+   |     --------------------------------------- in this macro invocation
+   |
+   = note: this error originates in the macro `generate_field_accesses` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: aborting due to 4 previous errors
+
diff --git a/tests/ui/parser/float-field.rs b/tests/ui/parser/float-field.rs
new file mode 100644
index 000000000..eaa7465dc
--- /dev/null
+++ b/tests/ui/parser/float-field.rs
@@ -0,0 +1,62 @@
+struct S(u8, (u8, u8));
+
+fn main() {
+    let s = S(0, (0, 0));
+
+    s.1e1; //~ ERROR no field `1e1` on type `S`
+    s.1.; //~ ERROR unexpected token: `;`
+    s.1.1;
+    s.1.1e1; //~ ERROR no field `1e1` on type `(u8, u8)`
+    { s.1e+; } //~ ERROR unexpected token: `1e+`
+               //~| ERROR expected one of `.`, `;`, `?`, `}`, or an operator, found `1e+`
+               //~| ERROR expected at least one digit in exponent
+    { s.1e-; } //~ ERROR unexpected token: `1e-`
+               //~| ERROR expected one of `.`, `;`, `?`, `}`, or an operator, found `1e-`
+               //~| ERROR expected at least one digit in exponent
+    { s.1e+1; } //~ ERROR unexpected token: `1e+1`
+                //~| ERROR expected one of `.`, `;`, `?`, `}`, or an operator, found `1e+1`
+    { s.1e-1; } //~ ERROR unexpected token: `1e-1`
+                //~| ERROR expected one of `.`, `;`, `?`, `}`, or an operator, found `1e-1`
+    { s.1.1e+1; } //~ ERROR unexpected token: `1.1e+1`
+                  //~| ERROR expected one of `.`, `;`, `?`, `}`, or an operator, found `1.1e+1`
+    { s.1.1e-1; } //~ ERROR unexpected token: `1.1e-1`
+                  //~| ERROR expected one of `.`, `;`, `?`, `}`, or an operator, found `1.1e-1`
+    s.0x1e1;  //~ ERROR no field `0x1e1` on type `S`
+    s.0x1.; //~ ERROR no field `0x1` on type `S`
+            //~| ERROR hexadecimal float literal is not supported
+            //~| ERROR unexpected token: `;`
+    s.0x1.1; //~ ERROR no field `0x1` on type `S`
+             //~| ERROR hexadecimal float literal is not supported
+    s.0x1.1e1; //~ ERROR no field `0x1` on type `S`
+               //~| ERROR hexadecimal float literal is not supported
+    { s.0x1e+; } //~ ERROR expected expression, found `;`
+    { s.0x1e-; } //~ ERROR expected expression, found `;`
+    s.0x1e+1; //~ ERROR no field `0x1e` on type `S`
+    s.0x1e-1; //~ ERROR no field `0x1e` on type `S`
+    { s.0x1.1e+1; } //~ ERROR unexpected token: `0x1.1e+1`
+                    //~| ERROR expected one of `.`, `;`, `?`, `}`, or an operator, found `0x1.1e+1`
+                    //~| ERROR hexadecimal float literal is not supported
+    { s.0x1.1e-1; } //~ ERROR unexpected token: `0x1.1e-1`
+                    //~| ERROR expected one of `.`, `;`, `?`, `}`, or an operator, found `0x1.1e-1`
+                    //~| ERROR hexadecimal float literal is not supported
+    s.1e1f32; //~ ERROR no field `1e1` on type `S`
+              //~| ERROR suffixes on a tuple index are invalid
+    s.1.f32; //~ ERROR no field `f32` on type `(u8, u8)`
+    s.1.1f32; //~ ERROR suffixes on a tuple index are invalid
+    s.1.1e1f32; //~ ERROR no field `1e1` on type `(u8, u8)`
+                //~| ERROR suffixes on a tuple index are invalid
+    { s.1e+f32; } //~ ERROR unexpected token: `1e+f32`
+                  //~| ERROR expected one of `.`, `;`, `?`, `}`, or an operator, found `1e+f32`
+                  //~| ERROR expected at least one digit in exponent
+    { s.1e-f32; } //~ ERROR unexpected token: `1e-f32`
+                  //~| ERROR expected one of `.`, `;`, `?`, `}`, or an operator, found `1e-f32`
+                  //~| ERROR expected at least one digit in exponent
+    { s.1e+1f32; } //~ ERROR unexpected token: `1e+1f32`
+                   //~| ERROR expected one of `.`, `;`, `?`, `}`, or an operator, found `1e+1f32`
+    { s.1e-1f32; } //~ ERROR unexpected token: `1e-1f32`
+                   //~| ERROR expected one of `.`, `;`, `?`, `}`, or an operator, found `1e-1f32`
+    { s.1.1e+1f32; } //~ ERROR unexpected token: `1.1e+1f32`
+                    //~| ERROR expected one of `.`, `;`, `?`, `}`, or an operator, found `1.1e+1f32`
+    { s.1.1e-1f32; } //~ ERROR unexpected token: `1.1e-1f32`
+                    //~| ERROR expected one of `.`, `;`, `?`, `}`, or an operator, found `1.1e-1f32`
+}
diff --git a/tests/ui/parser/float-field.stderr b/tests/ui/parser/float-field.stderr
new file mode 100644
index 000000000..7090efc50
--- /dev/null
+++ b/tests/ui/parser/float-field.stderr
@@ -0,0 +1,349 @@
+error: expected at least one digit in exponent
+  --> $DIR/float-field.rs:10:9
+   |
+LL |     { s.1e+; }
+   |         ^^^
+
+error: expected at least one digit in exponent
+  --> $DIR/float-field.rs:13:9
+   |
+LL |     { s.1e-; }
+   |         ^^^
+
+error: hexadecimal float literal is not supported
+  --> $DIR/float-field.rs:25:7
+   |
+LL |     s.0x1.;
+   |       ^^^^
+
+error: hexadecimal float literal is not supported
+  --> $DIR/float-field.rs:28:7
+   |
+LL |     s.0x1.1;
+   |       ^^^^^
+
+error: hexadecimal float literal is not supported
+  --> $DIR/float-field.rs:30:7
+   |
+LL |     s.0x1.1e1;
+   |       ^^^^^^^
+
+error: hexadecimal float literal is not supported
+  --> $DIR/float-field.rs:36:9
+   |
+LL |     { s.0x1.1e+1; }
+   |         ^^^^^^^^
+
+error: hexadecimal float literal is not supported
+  --> $DIR/float-field.rs:39:9
+   |
+LL |     { s.0x1.1e-1; }
+   |         ^^^^^^^^
+
+error: expected at least one digit in exponent
+  --> $DIR/float-field.rs:48:9
+   |
+LL |     { s.1e+f32; }
+   |         ^^^^^^
+
+error: expected at least one digit in exponent
+  --> $DIR/float-field.rs:51:9
+   |
+LL |     { s.1e-f32; }
+   |         ^^^^^^
+
+error: unexpected token: `;`
+  --> $DIR/float-field.rs:7:9
+   |
+LL |     s.1.;
+   |         ^
+
+error: unexpected token: `1e+`
+  --> $DIR/float-field.rs:10:9
+   |
+LL |     { s.1e+; }
+   |         ^^^
+
+error: expected one of `.`, `;`, `?`, `}`, or an operator, found `1e+`
+  --> $DIR/float-field.rs:10:9
+   |
+LL |     { s.1e+; }
+   |         ^^^ expected one of `.`, `;`, `?`, `}`, or an operator
+
+error: unexpected token: `1e-`
+  --> $DIR/float-field.rs:13:9
+   |
+LL |     { s.1e-; }
+   |         ^^^
+
+error: expected one of `.`, `;`, `?`, `}`, or an operator, found `1e-`
+  --> $DIR/float-field.rs:13:9
+   |
+LL |     { s.1e-; }
+   |         ^^^ expected one of `.`, `;`, `?`, `}`, or an operator
+
+error: unexpected token: `1e+1`
+  --> $DIR/float-field.rs:16:9
+   |
+LL |     { s.1e+1; }
+   |         ^^^^
+
+error: expected one of `.`, `;`, `?`, `}`, or an operator, found `1e+1`
+  --> $DIR/float-field.rs:16:9
+   |
+LL |     { s.1e+1; }
+   |         ^^^^ expected one of `.`, `;`, `?`, `}`, or an operator
+
+error: unexpected token: `1e-1`
+  --> $DIR/float-field.rs:18:9
+   |
+LL |     { s.1e-1; }
+   |         ^^^^
+
+error: expected one of `.`, `;`, `?`, `}`, or an operator, found `1e-1`
+  --> $DIR/float-field.rs:18:9
+   |
+LL |     { s.1e-1; }
+   |         ^^^^ expected one of `.`, `;`, `?`, `}`, or an operator
+
+error: unexpected token: `1.1e+1`
+  --> $DIR/float-field.rs:20:9
+   |
+LL |     { s.1.1e+1; }
+   |         ^^^^^^
+
+error: expected one of `.`, `;`, `?`, `}`, or an operator, found `1.1e+1`
+  --> $DIR/float-field.rs:20:9
+   |
+LL |     { s.1.1e+1; }
+   |         ^^^^^^ expected one of `.`, `;`, `?`, `}`, or an operator
+
+error: unexpected token: `1.1e-1`
+  --> $DIR/float-field.rs:22:9
+   |
+LL |     { s.1.1e-1; }
+   |         ^^^^^^
+
+error: expected one of `.`, `;`, `?`, `}`, or an operator, found `1.1e-1`
+  --> $DIR/float-field.rs:22:9
+   |
+LL |     { s.1.1e-1; }
+   |         ^^^^^^ expected one of `.`, `;`, `?`, `}`, or an operator
+
+error: unexpected token: `;`
+  --> $DIR/float-field.rs:25:11
+   |
+LL |     s.0x1.;
+   |           ^
+
+error: expected expression, found `;`
+  --> $DIR/float-field.rs:32:14
+   |
+LL |     { s.0x1e+; }
+   |              ^ expected expression
+
+error: expected expression, found `;`
+  --> $DIR/float-field.rs:33:14
+   |
+LL |     { s.0x1e-; }
+   |              ^ expected expression
+
+error: unexpected token: `0x1.1e+1`
+  --> $DIR/float-field.rs:36:9
+   |
+LL |     { s.0x1.1e+1; }
+   |         ^^^^^^^^
+
+error: expected one of `.`, `;`, `?`, `}`, or an operator, found `0x1.1e+1`
+  --> $DIR/float-field.rs:36:9
+   |
+LL |     { s.0x1.1e+1; }
+   |         ^^^^^^^^ expected one of `.`, `;`, `?`, `}`, or an operator
+
+error: unexpected token: `0x1.1e-1`
+  --> $DIR/float-field.rs:39:9
+   |
+LL |     { s.0x1.1e-1; }
+   |         ^^^^^^^^
+
+error: expected one of `.`, `;`, `?`, `}`, or an operator, found `0x1.1e-1`
+  --> $DIR/float-field.rs:39:9
+   |
+LL |     { s.0x1.1e-1; }
+   |         ^^^^^^^^ expected one of `.`, `;`, `?`, `}`, or an operator
+
+error: suffixes on a tuple index are invalid
+  --> $DIR/float-field.rs:42:7
+   |
+LL |     s.1e1f32;
+   |       ^^^^^^ invalid suffix `f32`
+
+error: suffixes on a tuple index are invalid
+  --> $DIR/float-field.rs:45:7
+   |
+LL |     s.1.1f32;
+   |       ^^^^^^ invalid suffix `f32`
+
+error: suffixes on a tuple index are invalid
+  --> $DIR/float-field.rs:46:7
+   |
+LL |     s.1.1e1f32;
+   |       ^^^^^^^^ invalid suffix `f32`
+
+error: unexpected token: `1e+f32`
+  --> $DIR/float-field.rs:48:9
+   |
+LL |     { s.1e+f32; }
+   |         ^^^^^^
+
+error: expected one of `.`, `;`, `?`, `}`, or an operator, found `1e+f32`
+  --> $DIR/float-field.rs:48:9
+   |
+LL |     { s.1e+f32; }
+   |         ^^^^^^ expected one of `.`, `;`, `?`, `}`, or an operator
+
+error: unexpected token: `1e-f32`
+  --> $DIR/float-field.rs:51:9
+   |
+LL |     { s.1e-f32; }
+   |         ^^^^^^
+
+error: expected one of `.`, `;`, `?`, `}`, or an operator, found `1e-f32`
+  --> $DIR/float-field.rs:51:9
+   |
+LL |     { s.1e-f32; }
+   |         ^^^^^^ expected one of `.`, `;`, `?`, `}`, or an operator
+
+error: unexpected token: `1e+1f32`
+  --> $DIR/float-field.rs:54:9
+   |
+LL |     { s.1e+1f32; }
+   |         ^^^^^^^
+
+error: expected one of `.`, `;`, `?`, `}`, or an operator, found `1e+1f32`
+  --> $DIR/float-field.rs:54:9
+   |
+LL |     { s.1e+1f32; }
+   |         ^^^^^^^ expected one of `.`, `;`, `?`, `}`, or an operator
+
+error: unexpected token: `1e-1f32`
+  --> $DIR/float-field.rs:56:9
+   |
+LL |     { s.1e-1f32; }
+   |         ^^^^^^^
+
+error: expected one of `.`, `;`, `?`, `}`, or an operator, found `1e-1f32`
+  --> $DIR/float-field.rs:56:9
+   |
+LL |     { s.1e-1f32; }
+   |         ^^^^^^^ expected one of `.`, `;`, `?`, `}`, or an operator
+
+error: unexpected token: `1.1e+1f32`
+  --> $DIR/float-field.rs:58:9
+   |
+LL |     { s.1.1e+1f32; }
+   |         ^^^^^^^^^
+
+error: expected one of `.`, `;`, `?`, `}`, or an operator, found `1.1e+1f32`
+  --> $DIR/float-field.rs:58:9
+   |
+LL |     { s.1.1e+1f32; }
+   |         ^^^^^^^^^ expected one of `.`, `;`, `?`, `}`, or an operator
+
+error: unexpected token: `1.1e-1f32`
+  --> $DIR/float-field.rs:60:9
+   |
+LL |     { s.1.1e-1f32; }
+   |         ^^^^^^^^^
+
+error: expected one of `.`, `;`, `?`, `}`, or an operator, found `1.1e-1f32`
+  --> $DIR/float-field.rs:60:9
+   |
+LL |     { s.1.1e-1f32; }
+   |         ^^^^^^^^^ expected one of `.`, `;`, `?`, `}`, or an operator
+
+error[E0609]: no field `1e1` on type `S`
+  --> $DIR/float-field.rs:6:7
+   |
+LL |     s.1e1;
+   |       ^^^ unknown field
+   |
+   = note: available fields are: `0`, `1`
+
+error[E0609]: no field `1e1` on type `(u8, u8)`
+  --> $DIR/float-field.rs:9:9
+   |
+LL |     s.1.1e1;
+   |         ^^^
+
+error[E0609]: no field `0x1e1` on type `S`
+  --> $DIR/float-field.rs:24:7
+   |
+LL |     s.0x1e1;
+   |       ^^^^^ unknown field
+   |
+   = note: available fields are: `0`, `1`
+
+error[E0609]: no field `0x1` on type `S`
+  --> $DIR/float-field.rs:25:7
+   |
+LL |     s.0x1.;
+   |       ^^^ unknown field
+   |
+   = note: available fields are: `0`, `1`
+
+error[E0609]: no field `0x1` on type `S`
+  --> $DIR/float-field.rs:28:7
+   |
+LL |     s.0x1.1;
+   |       ^^^ unknown field
+   |
+   = note: available fields are: `0`, `1`
+
+error[E0609]: no field `0x1` on type `S`
+  --> $DIR/float-field.rs:30:7
+   |
+LL |     s.0x1.1e1;
+   |       ^^^ unknown field
+   |
+   = note: available fields are: `0`, `1`
+
+error[E0609]: no field `0x1e` on type `S`
+  --> $DIR/float-field.rs:34:7
+   |
+LL |     s.0x1e+1;
+   |       ^^^^ unknown field
+   |
+   = note: available fields are: `0`, `1`
+
+error[E0609]: no field `0x1e` on type `S`
+  --> $DIR/float-field.rs:35:7
+   |
+LL |     s.0x1e-1;
+   |       ^^^^ unknown field
+   |
+   = note: available fields are: `0`, `1`
+
+error[E0609]: no field `1e1` on type `S`
+  --> $DIR/float-field.rs:42:7
+   |
+LL |     s.1e1f32;
+   |       ^^^^^^ unknown field
+   |
+   = note: available fields are: `0`, `1`
+
+error[E0609]: no field `f32` on type `(u8, u8)`
+  --> $DIR/float-field.rs:44:9
+   |
+LL |     s.1.f32;
+   |         ^^^
+
+error[E0609]: no field `1e1` on type `(u8, u8)`
+  --> $DIR/float-field.rs:46:7
+   |
+LL |     s.1.1e1f32;
+   |       ^^^^^^^^
+
+error: aborting due to 55 previous errors
+
+For more information about this error, try `rustc --explain E0609`.
diff --git a/tests/ui/parser/float-literals.rs b/tests/ui/parser/float-literals.rs
new file mode 100644
index 000000000..1e9319fd2
--- /dev/null
+++ b/tests/ui/parser/float-literals.rs
@@ -0,0 +1,9 @@
+// build-pass
+// ignore-tidy-linelength
+// Regression test for #31109 and #31407.
+
+pub fn main() {
+    let _: f64 = 0.3333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333;
+
+    let _: f64 = 1234567890123456789012345678901234567890e-340;
+}
diff --git a/tests/ui/parser/fn-arg-doc-comment.rs b/tests/ui/parser/fn-arg-doc-comment.rs
new file mode 100644
index 000000000..21d753ad0
--- /dev/null
+++ b/tests/ui/parser/fn-arg-doc-comment.rs
@@ -0,0 +1,30 @@
+pub fn f( //~ NOTE function defined here
+    /// Comment
+    //~^ ERROR documentation comments cannot be applied to function parameters
+    //~| NOTE doc comments are not allowed here
+    //~| NOTE
+    id: u8,
+    /// Other
+    //~^ ERROR documentation comments cannot be applied to function parameters
+    //~| NOTE doc comments are not allowed here
+    //~| NOTE
+    a: u8,
+) {}
+
+fn bar(id: #[allow(dead_code)] i32) {}
+//~^ ERROR attributes cannot be applied to a function parameter's type
+//~| NOTE attributes are not allowed here
+//~| NOTE function defined here
+//~| NOTE
+
+fn main() {
+    // verify that the parser recovered and properly typechecked the args
+    f("", "");
+    //~^ ERROR arguments to this function are incorrect
+    //~| NOTE expected `u8`, found `&str`
+    //~| NOTE expected `u8`, found `&str`
+    bar("");
+    //~^ ERROR mismatched types
+    //~| NOTE arguments to this function are incorrect
+    //~| NOTE expected `i32`, found `&str`
+}
diff --git a/tests/ui/parser/fn-arg-doc-comment.stderr b/tests/ui/parser/fn-arg-doc-comment.stderr
new file mode 100644
index 000000000..c8d7e2efe
--- /dev/null
+++ b/tests/ui/parser/fn-arg-doc-comment.stderr
@@ -0,0 +1,61 @@
+error: attributes cannot be applied to a function parameter's type
+  --> $DIR/fn-arg-doc-comment.rs:14:12
+   |
+LL | fn bar(id: #[allow(dead_code)] i32) {}
+   |            ^^^^^^^^^^^^^^^^^^^ attributes are not allowed here
+
+error: documentation comments cannot be applied to function parameters
+  --> $DIR/fn-arg-doc-comment.rs:2:5
+   |
+LL |     /// Comment
+   |     ^^^^^^^^^^^ doc comments are not allowed here
+
+error: documentation comments cannot be applied to function parameters
+  --> $DIR/fn-arg-doc-comment.rs:7:5
+   |
+LL |     /// Other
+   |     ^^^^^^^^^ doc comments are not allowed here
+
+error[E0308]: arguments to this function are incorrect
+  --> $DIR/fn-arg-doc-comment.rs:22:5
+   |
+LL |     f("", "");
+   |     ^ --  -- expected `u8`, found `&str`
+   |       |
+   |       expected `u8`, found `&str`
+   |
+note: function defined here
+  --> $DIR/fn-arg-doc-comment.rs:1:8
+   |
+LL |   pub fn f(
+   |          ^
+LL | /     /// Comment
+LL | |
+LL | |
+LL | |
+LL | |     id: u8,
+   | |__________-
+LL | /     /// Other
+LL | |
+LL | |
+LL | |
+LL | |     a: u8,
+   | |_________-
+
+error[E0308]: mismatched types
+  --> $DIR/fn-arg-doc-comment.rs:26:9
+   |
+LL |     bar("");
+   |     --- ^^ expected `i32`, found `&str`
+   |     |
+   |     arguments to this function are incorrect
+   |
+note: function defined here
+  --> $DIR/fn-arg-doc-comment.rs:14:4
+   |
+LL | fn bar(id: #[allow(dead_code)] i32) {}
+   |    ^^^ ---------------------------
+
+error: aborting due to 5 previous errors
+
+For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/parser/fn-body-eq-expr-semi.rs b/tests/ui/parser/fn-body-eq-expr-semi.rs
new file mode 100644
index 000000000..7127ba8da
--- /dev/null
+++ b/tests/ui/parser/fn-body-eq-expr-semi.rs
@@ -0,0 +1,23 @@
+fn main() {}
+
+fn syntax() {
+    fn foo() = 42; //~ ERROR function body cannot be `= expression;`
+    fn bar() -> u8 = 42; //~ ERROR function body cannot be `= expression;`
+}
+
+extern "C" {
+    fn foo() = 42; //~ ERROR function body cannot be `= expression;`
+    //~^ ERROR incorrect function inside `extern` block
+    fn bar() -> u8 = 42; //~ ERROR function body cannot be `= expression;`
+    //~^ ERROR incorrect function inside `extern` block
+}
+
+trait Foo {
+    fn foo() = 42; //~ ERROR function body cannot be `= expression;`
+    fn bar() -> u8 = 42; //~ ERROR function body cannot be `= expression;`
+}
+
+impl Foo for () {
+    fn foo() = 42; //~ ERROR function body cannot be `= expression;`
+    fn bar() -> u8 = 42; //~ ERROR function body cannot be `= expression;`
+}
diff --git a/tests/ui/parser/fn-body-eq-expr-semi.stderr b/tests/ui/parser/fn-body-eq-expr-semi.stderr
new file mode 100644
index 000000000..f1255d864
--- /dev/null
+++ b/tests/ui/parser/fn-body-eq-expr-semi.stderr
@@ -0,0 +1,117 @@
+error: function body cannot be `= expression;`
+  --> $DIR/fn-body-eq-expr-semi.rs:4:14
+   |
+LL |     fn foo() = 42;
+   |              ^^^^^
+   |
+help: surround the expression with `{` and `}` instead of `=` and `;`
+   |
+LL |     fn foo() { 42 }
+   |              ~    ~
+
+error: function body cannot be `= expression;`
+  --> $DIR/fn-body-eq-expr-semi.rs:5:20
+   |
+LL |     fn bar() -> u8 = 42;
+   |                    ^^^^^
+   |
+help: surround the expression with `{` and `}` instead of `=` and `;`
+   |
+LL |     fn bar() -> u8 { 42 }
+   |                    ~    ~
+
+error: function body cannot be `= expression;`
+  --> $DIR/fn-body-eq-expr-semi.rs:9:14
+   |
+LL |     fn foo() = 42;
+   |              ^^^^^
+   |
+help: surround the expression with `{` and `}` instead of `=` and `;`
+   |
+LL |     fn foo() { 42 }
+   |              ~    ~
+
+error: function body cannot be `= expression;`
+  --> $DIR/fn-body-eq-expr-semi.rs:11:20
+   |
+LL |     fn bar() -> u8 = 42;
+   |                    ^^^^^
+   |
+help: surround the expression with `{` and `}` instead of `=` and `;`
+   |
+LL |     fn bar() -> u8 { 42 }
+   |                    ~    ~
+
+error: function body cannot be `= expression;`
+  --> $DIR/fn-body-eq-expr-semi.rs:16:14
+   |
+LL |     fn foo() = 42;
+   |              ^^^^^
+   |
+help: surround the expression with `{` and `}` instead of `=` and `;`
+   |
+LL |     fn foo() { 42 }
+   |              ~    ~
+
+error: function body cannot be `= expression;`
+  --> $DIR/fn-body-eq-expr-semi.rs:17:20
+   |
+LL |     fn bar() -> u8 = 42;
+   |                    ^^^^^
+   |
+help: surround the expression with `{` and `}` instead of `=` and `;`
+   |
+LL |     fn bar() -> u8 { 42 }
+   |                    ~    ~
+
+error: function body cannot be `= expression;`
+  --> $DIR/fn-body-eq-expr-semi.rs:21:14
+   |
+LL |     fn foo() = 42;
+   |              ^^^^^
+   |
+help: surround the expression with `{` and `}` instead of `=` and `;`
+   |
+LL |     fn foo() { 42 }
+   |              ~    ~
+
+error: function body cannot be `= expression;`
+  --> $DIR/fn-body-eq-expr-semi.rs:22:20
+   |
+LL |     fn bar() -> u8 = 42;
+   |                    ^^^^^
+   |
+help: surround the expression with `{` and `}` instead of `=` and `;`
+   |
+LL |     fn bar() -> u8 { 42 }
+   |                    ~    ~
+
+error: incorrect function inside `extern` block
+  --> $DIR/fn-body-eq-expr-semi.rs:9:8
+   |
+LL | extern "C" {
+   | ---------- `extern` blocks define existing foreign functions and functions inside of them cannot have a body
+LL |     fn foo() = 42;
+   |        ^^^   ----- help: remove the invalid body: `;`
+   |        |
+   |        cannot have a body
+   |
+   = help: you might have meant to write a function accessible through FFI, which can be done by writing `extern fn` outside of the `extern` block
+   = note: for more information, visit https://doc.rust-lang.org/std/keyword.extern.html
+
+error: incorrect function inside `extern` block
+  --> $DIR/fn-body-eq-expr-semi.rs:11:8
+   |
+LL | extern "C" {
+   | ---------- `extern` blocks define existing foreign functions and functions inside of them cannot have a body
+...
+LL |     fn bar() -> u8 = 42;
+   |        ^^^         ----- help: remove the invalid body: `;`
+   |        |
+   |        cannot have a body
+   |
+   = help: you might have meant to write a function accessible through FFI, which can be done by writing `extern fn` outside of the `extern` block
+   = note: for more information, visit https://doc.rust-lang.org/std/keyword.extern.html
+
+error: aborting due to 10 previous errors
+
diff --git a/tests/ui/parser/fn-body-optional-semantic-fail.rs b/tests/ui/parser/fn-body-optional-semantic-fail.rs
new file mode 100644
index 000000000..12df48880
--- /dev/null
+++ b/tests/ui/parser/fn-body-optional-semantic-fail.rs
@@ -0,0 +1,27 @@
+// Tests the different rules for `fn` forms requiring the presence or lack of a body.
+
+fn main() {
+    fn f1(); //~ ERROR free function without a body
+    fn f2() {} // OK.
+
+    trait X {
+        fn f1(); // OK.
+        fn f2() {} // OK.
+    }
+
+    struct Y;
+    impl X for Y {
+        fn f1(); //~ ERROR associated function in `impl` without body
+        fn f2() {} // OK.
+    }
+
+    impl Y {
+        fn f3(); //~ ERROR associated function in `impl` without body
+        fn f4() {} // OK.
+    }
+
+    extern "C" {
+        fn f5(); // OK.
+        fn f6() {} //~ ERROR incorrect function inside `extern` block
+    }
+}
diff --git a/tests/ui/parser/fn-body-optional-semantic-fail.stderr b/tests/ui/parser/fn-body-optional-semantic-fail.stderr
new file mode 100644
index 000000000..14bcd7c16
--- /dev/null
+++ b/tests/ui/parser/fn-body-optional-semantic-fail.stderr
@@ -0,0 +1,40 @@
+error: free function without a body
+  --> $DIR/fn-body-optional-semantic-fail.rs:4:5
+   |
+LL |     fn f1();
+   |     ^^^^^^^-
+   |            |
+   |            help: provide a definition for the function: `{ <body> }`
+
+error: associated function in `impl` without body
+  --> $DIR/fn-body-optional-semantic-fail.rs:14:9
+   |
+LL |         fn f1();
+   |         ^^^^^^^-
+   |                |
+   |                help: provide a definition for the function: `{ <body> }`
+
+error: associated function in `impl` without body
+  --> $DIR/fn-body-optional-semantic-fail.rs:19:9
+   |
+LL |         fn f3();
+   |         ^^^^^^^-
+   |                |
+   |                help: provide a definition for the function: `{ <body> }`
+
+error: incorrect function inside `extern` block
+  --> $DIR/fn-body-optional-semantic-fail.rs:25:12
+   |
+LL |     extern "C" {
+   |     ---------- `extern` blocks define existing foreign functions and functions inside of them cannot have a body
+LL |         fn f5(); // OK.
+LL |         fn f6() {}
+   |            ^^   -- help: remove the invalid body: `;`
+   |            |
+   |            cannot have a body
+   |
+   = help: you might have meant to write a function accessible through FFI, which can be done by writing `extern fn` outside of the `extern` block
+   = note: for more information, visit https://doc.rust-lang.org/std/keyword.extern.html
+
+error: aborting due to 4 previous errors
+
diff --git a/tests/ui/parser/fn-body-optional-syntactic-pass.rs b/tests/ui/parser/fn-body-optional-syntactic-pass.rs
new file mode 100644
index 000000000..f9dbebf0b
--- /dev/null
+++ b/tests/ui/parser/fn-body-optional-syntactic-pass.rs
@@ -0,0 +1,31 @@
+// Ensures that all `fn` forms having or lacking a body are syntactically valid.
+
+// check-pass
+
+fn main() {}
+
+#[cfg(FALSE)]
+fn syntax() {
+    fn f();
+    fn f() {}
+
+    trait X {
+        fn f();
+        fn f() {}
+    }
+
+    impl X for Y {
+        fn f();
+        fn f() {}
+    }
+
+    impl Y {
+        fn f();
+        fn f() {}
+    }
+
+    extern "C" {
+        fn f();
+        fn f();
+    }
+}
diff --git a/tests/ui/parser/fn-colon-return-type.rs b/tests/ui/parser/fn-colon-return-type.rs
new file mode 100644
index 000000000..0001ef57c
--- /dev/null
+++ b/tests/ui/parser/fn-colon-return-type.rs
@@ -0,0 +1,6 @@
+fn foo(x: i32): i32 {
+//~^ ERROR return types are denoted using `->`
+    x
+}
+
+fn main() {}
diff --git a/tests/ui/parser/fn-colon-return-type.stderr b/tests/ui/parser/fn-colon-return-type.stderr
new file mode 100644
index 000000000..1de918782
--- /dev/null
+++ b/tests/ui/parser/fn-colon-return-type.stderr
@@ -0,0 +1,8 @@
+error: return types are denoted using `->`
+  --> $DIR/fn-colon-return-type.rs:1:15
+   |
+LL | fn foo(x: i32): i32 {
+   |               ^ help: use `->` instead
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/fn-defined-using-def.rs b/tests/ui/parser/fn-defined-using-def.rs
new file mode 100644
index 000000000..21da34c47
--- /dev/null
+++ b/tests/ui/parser/fn-defined-using-def.rs
@@ -0,0 +1,10 @@
+// Check what happens when `def` is used to define a function, instead of `fn`
+// edition:2021
+
+#![allow(dead_code)]
+
+def foo() {}
+//~^ ERROR expected one of `!` or `::`, found `foo`
+//~^^ HELP write `fn` instead of `def` to declare a function
+
+fn main() {}
diff --git a/tests/ui/parser/fn-defined-using-def.stderr b/tests/ui/parser/fn-defined-using-def.stderr
new file mode 100644
index 000000000..f34329012
--- /dev/null
+++ b/tests/ui/parser/fn-defined-using-def.stderr
@@ -0,0 +1,10 @@
+error: expected one of `!` or `::`, found `foo`
+  --> $DIR/fn-defined-using-def.rs:6:5
+   |
+LL | def foo() {}
+   | --- ^^^ expected one of `!` or `::`
+   | |
+   | help: write `fn` instead of `def` to declare a function
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/fn-defined-using-fun.rs b/tests/ui/parser/fn-defined-using-fun.rs
new file mode 100644
index 000000000..4f7460504
--- /dev/null
+++ b/tests/ui/parser/fn-defined-using-fun.rs
@@ -0,0 +1,10 @@
+// Check what happens when `fun` is used to define a function, instead of `fn`
+// edition:2021
+
+#![allow(dead_code)]
+
+fun foo() {}
+//~^ ERROR expected one of `!` or `::`, found `foo`
+//~^^ HELP write `fn` instead of `fun` to declare a function
+
+fn main() {}
diff --git a/tests/ui/parser/fn-defined-using-fun.stderr b/tests/ui/parser/fn-defined-using-fun.stderr
new file mode 100644
index 000000000..2f6cfff35
--- /dev/null
+++ b/tests/ui/parser/fn-defined-using-fun.stderr
@@ -0,0 +1,10 @@
+error: expected one of `!` or `::`, found `foo`
+  --> $DIR/fn-defined-using-fun.rs:6:5
+   |
+LL | fun foo() {}
+   | --- ^^^ expected one of `!` or `::`
+   | |
+   | help: write `fn` instead of `fun` to declare a function
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/fn-defined-using-func.rs b/tests/ui/parser/fn-defined-using-func.rs
new file mode 100644
index 000000000..2dce96fdc
--- /dev/null
+++ b/tests/ui/parser/fn-defined-using-func.rs
@@ -0,0 +1,10 @@
+// Check what happens when `func` is used to define a function, instead of `fn`
+// edition:2021
+
+#![allow(dead_code)]
+
+func foo() {}
+//~^ ERROR expected one of `!` or `::`, found `foo`
+//~^^ HELP write `fn` instead of `func` to declare a function
+
+fn main() {}
diff --git a/tests/ui/parser/fn-defined-using-func.stderr b/tests/ui/parser/fn-defined-using-func.stderr
new file mode 100644
index 000000000..355741e89
--- /dev/null
+++ b/tests/ui/parser/fn-defined-using-func.stderr
@@ -0,0 +1,10 @@
+error: expected one of `!` or `::`, found `foo`
+  --> $DIR/fn-defined-using-func.rs:6:6
+   |
+LL | func foo() {}
+   | ---- ^^^ expected one of `!` or `::`
+   | |
+   | help: write `fn` instead of `func` to declare a function
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/fn-defined-using-function.rs b/tests/ui/parser/fn-defined-using-function.rs
new file mode 100644
index 000000000..fd8782728
--- /dev/null
+++ b/tests/ui/parser/fn-defined-using-function.rs
@@ -0,0 +1,10 @@
+// Check what happens when `function` is used to define a function, instead of `fn`
+// edition:2021
+
+#![allow(dead_code)]
+
+function foo() {}
+//~^ ERROR expected one of `!` or `::`, found `foo`
+//~^^ HELP write `fn` instead of `function` to declare a function
+
+fn main() {}
diff --git a/tests/ui/parser/fn-defined-using-function.stderr b/tests/ui/parser/fn-defined-using-function.stderr
new file mode 100644
index 000000000..43c33a2cd
--- /dev/null
+++ b/tests/ui/parser/fn-defined-using-function.stderr
@@ -0,0 +1,10 @@
+error: expected one of `!` or `::`, found `foo`
+  --> $DIR/fn-defined-using-function.rs:6:10
+   |
+LL | function foo() {}
+   | -------- ^^^ expected one of `!` or `::`
+   | |
+   | help: write `fn` instead of `function` to declare a function
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/fn-field-parse-error-ice.rs b/tests/ui/parser/fn-field-parse-error-ice.rs
new file mode 100644
index 000000000..188257ea5
--- /dev/null
+++ b/tests/ui/parser/fn-field-parse-error-ice.rs
@@ -0,0 +1,10 @@
+// Regression test for #85794
+
+struct Baz {
+    inner : dyn fn ()
+    //~^ ERROR expected `,`, or `}`, found keyword `fn`
+    //~| ERROR expected identifier, found keyword `fn`
+    //~| ERROR cannot find type `dyn` in this scope
+}
+
+fn main() {}
diff --git a/tests/ui/parser/fn-field-parse-error-ice.stderr b/tests/ui/parser/fn-field-parse-error-ice.stderr
new file mode 100644
index 000000000..3bf68e8cc
--- /dev/null
+++ b/tests/ui/parser/fn-field-parse-error-ice.stderr
@@ -0,0 +1,28 @@
+error: expected `,`, or `}`, found keyword `fn`
+  --> $DIR/fn-field-parse-error-ice.rs:4:16
+   |
+LL |     inner : dyn fn ()
+   |                ^ help: try adding a comma: `,`
+
+error: expected identifier, found keyword `fn`
+  --> $DIR/fn-field-parse-error-ice.rs:4:17
+   |
+LL | struct Baz {
+   |        --- while parsing this struct
+LL |     inner : dyn fn ()
+   |                 ^^ expected identifier, found keyword
+   |
+help: escape `fn` to use it as an identifier
+   |
+LL |     inner : dyn r#fn ()
+   |                 ++
+
+error[E0412]: cannot find type `dyn` in this scope
+  --> $DIR/fn-field-parse-error-ice.rs:4:13
+   |
+LL |     inner : dyn fn ()
+   |             ^^^ not found in this scope
+
+error: aborting due to 3 previous errors
+
+For more information about this error, try `rustc --explain E0412`.
diff --git a/tests/ui/parser/fn-header-semantic-fail.rs b/tests/ui/parser/fn-header-semantic-fail.rs
new file mode 100644
index 000000000..cf5d3dab4
--- /dev/null
+++ b/tests/ui/parser/fn-header-semantic-fail.rs
@@ -0,0 +1,58 @@
+// Ensures that all `fn` forms can have all the function qualifiers syntactically.
+
+// edition:2018
+
+#![feature(const_extern_fn)]
+
+fn main() {
+    async fn ff1() {} // OK.
+    unsafe fn ff2() {} // OK.
+    const fn ff3() {} // OK.
+    extern "C" fn ff4() {} // OK.
+    const async unsafe extern "C" fn ff5() {}
+    //~^ ERROR functions cannot be both `const` and `async`
+    //~| ERROR cycle detected
+
+    trait X {
+        async fn ft1(); //~ ERROR functions in traits cannot be declared `async`
+        unsafe fn ft2(); // OK.
+        const fn ft3(); //~ ERROR functions in traits cannot be declared const
+        extern "C" fn ft4(); // OK.
+        const async unsafe extern "C" fn ft5();
+        //~^ ERROR functions in traits cannot be declared `async`
+        //~| ERROR functions in traits cannot be declared const
+        //~| ERROR functions cannot be both `const` and `async`
+    }
+
+    struct Y;
+    impl X for Y {
+        async fn ft1() {} //~ ERROR functions in traits cannot be declared `async`
+        unsafe fn ft2() {} // OK.
+        const fn ft3() {} //~ ERROR functions in traits cannot be declared const
+        extern "C" fn ft4() {}
+        const async unsafe extern "C" fn ft5() {}
+        //~^ ERROR functions in traits cannot be declared `async`
+        //~| ERROR functions in traits cannot be declared const
+        //~| ERROR functions cannot be both `const` and `async`
+        //~| ERROR cycle detected
+    }
+
+    impl Y {
+        async fn fi1() {} // OK.
+        unsafe fn fi2() {} // OK.
+        const fn fi3() {} // OK.
+        extern "C" fn fi4() {} // OK.
+        const async unsafe extern "C" fn fi5() {}
+        //~^ ERROR functions cannot be both `const` and `async`
+        //~| ERROR cycle detected
+    }
+
+    extern "C" {
+        async fn fe1(); //~ ERROR functions in `extern` blocks cannot have qualifiers
+        unsafe fn fe2(); //~ ERROR functions in `extern` blocks cannot have qualifiers
+        const fn fe3(); //~ ERROR functions in `extern` blocks cannot have qualifiers
+        extern "C" fn fe4(); //~ ERROR functions in `extern` blocks cannot have qualifiers
+        const async unsafe extern "C" fn fe5(); //~ ERROR functions in `extern` blocks
+        //~^ ERROR functions cannot be both `const` and `async`
+    }
+}
diff --git a/tests/ui/parser/fn-header-semantic-fail.stderr b/tests/ui/parser/fn-header-semantic-fail.stderr
new file mode 100644
index 000000000..038fdfb2d
--- /dev/null
+++ b/tests/ui/parser/fn-header-semantic-fail.stderr
@@ -0,0 +1,302 @@
+error: functions cannot be both `const` and `async`
+  --> $DIR/fn-header-semantic-fail.rs:12:5
+   |
+LL |     const async unsafe extern "C" fn ff5() {}
+   |     ^^^^^-^^^^^------------------------------
+   |     |     |
+   |     |     `async` because of this
+   |     `const` because of this
+
+error[E0379]: functions in traits cannot be declared const
+  --> $DIR/fn-header-semantic-fail.rs:19:9
+   |
+LL |         const fn ft3();
+   |         ^^^^^ functions in traits cannot be const
+
+error[E0379]: functions in traits cannot be declared const
+  --> $DIR/fn-header-semantic-fail.rs:21:9
+   |
+LL |         const async unsafe extern "C" fn ft5();
+   |         ^^^^^ functions in traits cannot be const
+
+error: functions cannot be both `const` and `async`
+  --> $DIR/fn-header-semantic-fail.rs:21:9
+   |
+LL |         const async unsafe extern "C" fn ft5();
+   |         ^^^^^-^^^^^----------------------------
+   |         |     |
+   |         |     `async` because of this
+   |         `const` because of this
+
+error[E0379]: functions in traits cannot be declared const
+  --> $DIR/fn-header-semantic-fail.rs:31:9
+   |
+LL |         const fn ft3() {}
+   |         ^^^^^ functions in traits cannot be const
+
+error[E0379]: functions in traits cannot be declared const
+  --> $DIR/fn-header-semantic-fail.rs:33:9
+   |
+LL |         const async unsafe extern "C" fn ft5() {}
+   |         ^^^^^ functions in traits cannot be const
+
+error: functions cannot be both `const` and `async`
+  --> $DIR/fn-header-semantic-fail.rs:33:9
+   |
+LL |         const async unsafe extern "C" fn ft5() {}
+   |         ^^^^^-^^^^^------------------------------
+   |         |     |
+   |         |     `async` because of this
+   |         `const` because of this
+
+error: functions cannot be both `const` and `async`
+  --> $DIR/fn-header-semantic-fail.rs:45:9
+   |
+LL |         const async unsafe extern "C" fn fi5() {}
+   |         ^^^^^-^^^^^------------------------------
+   |         |     |
+   |         |     `async` because of this
+   |         `const` because of this
+
+error: functions in `extern` blocks cannot have qualifiers
+  --> $DIR/fn-header-semantic-fail.rs:51:18
+   |
+LL |     extern "C" {
+   |     ---------- in this `extern` block
+LL |         async fn fe1();
+   |                  ^^^
+   |
+help: remove the qualifiers
+   |
+LL |         fn fe1();
+   |         ~~
+
+error: functions in `extern` blocks cannot have qualifiers
+  --> $DIR/fn-header-semantic-fail.rs:52:19
+   |
+LL |     extern "C" {
+   |     ---------- in this `extern` block
+LL |         async fn fe1();
+LL |         unsafe fn fe2();
+   |                   ^^^
+   |
+help: remove the qualifiers
+   |
+LL |         fn fe2();
+   |         ~~
+
+error: functions in `extern` blocks cannot have qualifiers
+  --> $DIR/fn-header-semantic-fail.rs:53:18
+   |
+LL |     extern "C" {
+   |     ---------- in this `extern` block
+...
+LL |         const fn fe3();
+   |                  ^^^
+   |
+help: remove the qualifiers
+   |
+LL |         fn fe3();
+   |         ~~
+
+error: functions in `extern` blocks cannot have qualifiers
+  --> $DIR/fn-header-semantic-fail.rs:54:23
+   |
+LL |     extern "C" {
+   |     ---------- in this `extern` block
+...
+LL |         extern "C" fn fe4();
+   |                       ^^^
+   |
+help: remove the qualifiers
+   |
+LL |         fn fe4();
+   |         ~~
+
+error: functions in `extern` blocks cannot have qualifiers
+  --> $DIR/fn-header-semantic-fail.rs:55:42
+   |
+LL |     extern "C" {
+   |     ---------- in this `extern` block
+...
+LL |         const async unsafe extern "C" fn fe5();
+   |                                          ^^^
+   |
+help: remove the qualifiers
+   |
+LL |         fn fe5();
+   |         ~~
+
+error: functions cannot be both `const` and `async`
+  --> $DIR/fn-header-semantic-fail.rs:55:9
+   |
+LL |         const async unsafe extern "C" fn fe5();
+   |         ^^^^^-^^^^^----------------------------
+   |         |     |
+   |         |     `async` because of this
+   |         `const` because of this
+
+error[E0706]: functions in traits cannot be declared `async`
+  --> $DIR/fn-header-semantic-fail.rs:17:9
+   |
+LL |         async fn ft1();
+   |         -----^^^^^^^^^^
+   |         |
+   |         `async` because of this
+   |
+   = note: `async` trait functions are not currently supported
+   = note: consider using the `async-trait` crate: https://crates.io/crates/async-trait
+   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
+   = help: add `#![feature(async_fn_in_trait)]` to the crate attributes to enable
+
+error[E0706]: functions in traits cannot be declared `async`
+  --> $DIR/fn-header-semantic-fail.rs:21:9
+   |
+LL |         const async unsafe extern "C" fn ft5();
+   |         ^^^^^^-----^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |               |
+   |               `async` because of this
+   |
+   = note: `async` trait functions are not currently supported
+   = note: consider using the `async-trait` crate: https://crates.io/crates/async-trait
+   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
+   = help: add `#![feature(async_fn_in_trait)]` to the crate attributes to enable
+
+error[E0706]: functions in traits cannot be declared `async`
+  --> $DIR/fn-header-semantic-fail.rs:29:9
+   |
+LL |         async fn ft1() {}
+   |         -----^^^^^^^^^
+   |         |
+   |         `async` because of this
+   |
+   = note: `async` trait functions are not currently supported
+   = note: consider using the `async-trait` crate: https://crates.io/crates/async-trait
+   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
+   = help: add `#![feature(async_fn_in_trait)]` to the crate attributes to enable
+
+error[E0706]: functions in traits cannot be declared `async`
+  --> $DIR/fn-header-semantic-fail.rs:33:9
+   |
+LL |         const async unsafe extern "C" fn ft5() {}
+   |         ^^^^^^-----^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |               |
+   |               `async` because of this
+   |
+   = note: `async` trait functions are not currently supported
+   = note: consider using the `async-trait` crate: https://crates.io/crates/async-trait
+   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
+   = help: add `#![feature(async_fn_in_trait)]` to the crate attributes to enable
+
+error[E0391]: cycle detected when computing type of `main::ff5::{opaque#0}`
+  --> $DIR/fn-header-semantic-fail.rs:12:44
+   |
+LL |     const async unsafe extern "C" fn ff5() {}
+   |                                            ^
+   |
+note: ...which requires borrow-checking `main::ff5`...
+  --> $DIR/fn-header-semantic-fail.rs:12:5
+   |
+LL |     const async unsafe extern "C" fn ff5() {}
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+note: ...which requires processing MIR for `main::ff5`...
+  --> $DIR/fn-header-semantic-fail.rs:12:5
+   |
+LL |     const async unsafe extern "C" fn ff5() {}
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+note: ...which requires const checking `main::ff5`...
+  --> $DIR/fn-header-semantic-fail.rs:12:5
+   |
+LL |     const async unsafe extern "C" fn ff5() {}
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   = note: ...which requires computing whether `impl core::future::future::Future<Output = ()>` is freeze...
+   = note: ...which requires evaluating trait selection obligation `impl core::future::future::Future<Output = ()>: core::marker::Freeze`...
+   = note: ...which again requires computing type of `main::ff5::{opaque#0}`, completing the cycle
+note: cycle used when checking item types in top-level module
+  --> $DIR/fn-header-semantic-fail.rs:5:1
+   |
+LL | / #![feature(const_extern_fn)]
+LL | |
+LL | | fn main() {
+LL | |     async fn ff1() {} // OK.
+...  |
+LL | |     }
+LL | | }
+   | |_^
+
+error[E0391]: cycle detected when computing type of `main::<impl at $DIR/fn-header-semantic-fail.rs:28:5: 28:17>::ft5::{opaque#0}`
+  --> $DIR/fn-header-semantic-fail.rs:33:48
+   |
+LL |         const async unsafe extern "C" fn ft5() {}
+   |                                                ^
+   |
+note: ...which requires borrow-checking `main::<impl at $DIR/fn-header-semantic-fail.rs:28:5: 28:17>::ft5`...
+  --> $DIR/fn-header-semantic-fail.rs:33:9
+   |
+LL |         const async unsafe extern "C" fn ft5() {}
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+note: ...which requires processing MIR for `main::<impl at $DIR/fn-header-semantic-fail.rs:28:5: 28:17>::ft5`...
+  --> $DIR/fn-header-semantic-fail.rs:33:9
+   |
+LL |         const async unsafe extern "C" fn ft5() {}
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+note: ...which requires const checking `main::<impl at $DIR/fn-header-semantic-fail.rs:28:5: 28:17>::ft5`...
+  --> $DIR/fn-header-semantic-fail.rs:33:9
+   |
+LL |         const async unsafe extern "C" fn ft5() {}
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   = note: ...which requires computing whether `impl core::future::future::Future<Output = ()>` is freeze...
+   = note: ...which requires evaluating trait selection obligation `impl core::future::future::Future<Output = ()>: core::marker::Freeze`...
+   = note: ...which again requires computing type of `main::<impl at $DIR/fn-header-semantic-fail.rs:28:5: 28:17>::ft5::{opaque#0}`, completing the cycle
+note: cycle used when checking item types in top-level module
+  --> $DIR/fn-header-semantic-fail.rs:5:1
+   |
+LL | / #![feature(const_extern_fn)]
+LL | |
+LL | | fn main() {
+LL | |     async fn ff1() {} // OK.
+...  |
+LL | |     }
+LL | | }
+   | |_^
+
+error[E0391]: cycle detected when computing type of `main::<impl at $DIR/fn-header-semantic-fail.rs:40:5: 40:11>::fi5::{opaque#0}`
+  --> $DIR/fn-header-semantic-fail.rs:45:48
+   |
+LL |         const async unsafe extern "C" fn fi5() {}
+   |                                                ^
+   |
+note: ...which requires borrow-checking `main::<impl at $DIR/fn-header-semantic-fail.rs:40:5: 40:11>::fi5`...
+  --> $DIR/fn-header-semantic-fail.rs:45:9
+   |
+LL |         const async unsafe extern "C" fn fi5() {}
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+note: ...which requires processing MIR for `main::<impl at $DIR/fn-header-semantic-fail.rs:40:5: 40:11>::fi5`...
+  --> $DIR/fn-header-semantic-fail.rs:45:9
+   |
+LL |         const async unsafe extern "C" fn fi5() {}
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+note: ...which requires const checking `main::<impl at $DIR/fn-header-semantic-fail.rs:40:5: 40:11>::fi5`...
+  --> $DIR/fn-header-semantic-fail.rs:45:9
+   |
+LL |         const async unsafe extern "C" fn fi5() {}
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   = note: ...which requires computing whether `impl core::future::future::Future<Output = ()>` is freeze...
+   = note: ...which requires evaluating trait selection obligation `impl core::future::future::Future<Output = ()>: core::marker::Freeze`...
+   = note: ...which again requires computing type of `main::<impl at $DIR/fn-header-semantic-fail.rs:40:5: 40:11>::fi5::{opaque#0}`, completing the cycle
+note: cycle used when checking item types in top-level module
+  --> $DIR/fn-header-semantic-fail.rs:5:1
+   |
+LL | / #![feature(const_extern_fn)]
+LL | |
+LL | | fn main() {
+LL | |     async fn ff1() {} // OK.
+...  |
+LL | |     }
+LL | | }
+   | |_^
+
+error: aborting due to 21 previous errors
+
+Some errors have detailed explanations: E0379, E0391, E0706.
+For more information about an error, try `rustc --explain E0379`.
diff --git a/tests/ui/parser/fn-header-syntactic-pass.rs b/tests/ui/parser/fn-header-syntactic-pass.rs
new file mode 100644
index 000000000..68f1f7901
--- /dev/null
+++ b/tests/ui/parser/fn-header-syntactic-pass.rs
@@ -0,0 +1,47 @@
+// Ensures that all `fn` forms can have all the function qualifiers syntactically.
+
+// check-pass
+// edition:2018
+
+fn main() {}
+
+#[cfg(FALSE)]
+fn syntax() {
+    async fn f();
+    unsafe fn f();
+    const fn f();
+    extern "C" fn f();
+    const async unsafe extern "C" fn f();
+
+    trait X {
+        async fn f();
+        unsafe fn f();
+        const fn f();
+        extern "C" fn f();
+        const async unsafe extern "C" fn f();
+    }
+
+    impl X for Y {
+        async fn f();
+        unsafe fn f();
+        const fn f();
+        extern "C" fn f();
+        const async unsafe extern "C" fn f();
+    }
+
+    impl Y {
+        async fn f();
+        unsafe fn f();
+        const fn f();
+        extern "C" fn f();
+        const async unsafe extern "C" fn f();
+    }
+
+    extern "C" {
+        fn f();
+        fn f();
+        fn f();
+        fn f();
+        fn f();
+    }
+}
diff --git a/tests/ui/parser/fn-returns-fn-pointer.rs b/tests/ui/parser/fn-returns-fn-pointer.rs
new file mode 100644
index 000000000..15590e324
--- /dev/null
+++ b/tests/ui/parser/fn-returns-fn-pointer.rs
@@ -0,0 +1,6 @@
+// check-pass
+// Regression test for #78507.
+fn foo() -> Option<fn() -> Option<bool>> {
+    Some(|| Some(true))
+}
+fn main() {}
diff --git a/tests/ui/parser/foreign-const-semantic-fail.rs b/tests/ui/parser/foreign-const-semantic-fail.rs
new file mode 100644
index 000000000..c9940b74a
--- /dev/null
+++ b/tests/ui/parser/foreign-const-semantic-fail.rs
@@ -0,0 +1,9 @@
+fn main() {}
+
+extern "C" {
+    const A: isize;
+    //~^ ERROR extern items cannot be `const`
+    const B: isize = 42;
+    //~^ ERROR extern items cannot be `const`
+    //~| ERROR incorrect `static` inside `extern` block
+}
diff --git a/tests/ui/parser/foreign-const-semantic-fail.stderr b/tests/ui/parser/foreign-const-semantic-fail.stderr
new file mode 100644
index 000000000..8dc66c0d0
--- /dev/null
+++ b/tests/ui/parser/foreign-const-semantic-fail.stderr
@@ -0,0 +1,35 @@
+error: extern items cannot be `const`
+  --> $DIR/foreign-const-semantic-fail.rs:4:11
+   |
+LL |     const A: isize;
+   |     ------^
+   |     |
+   |     help: try using a static value: `static`
+   |
+   = note: for more information, visit https://doc.rust-lang.org/std/keyword.extern.html
+
+error: extern items cannot be `const`
+  --> $DIR/foreign-const-semantic-fail.rs:6:11
+   |
+LL |     const B: isize = 42;
+   |     ------^
+   |     |
+   |     help: try using a static value: `static`
+   |
+   = note: for more information, visit https://doc.rust-lang.org/std/keyword.extern.html
+
+error: incorrect `static` inside `extern` block
+  --> $DIR/foreign-const-semantic-fail.rs:6:11
+   |
+LL | extern "C" {
+   | ---------- `extern` blocks define existing foreign statics and statics inside of them cannot have a body
+...
+LL |     const B: isize = 42;
+   |           ^          -- the invalid body
+   |           |
+   |           cannot have a body
+   |
+   = note: for more information, visit https://doc.rust-lang.org/std/keyword.extern.html
+
+error: aborting due to 3 previous errors
+
diff --git a/tests/ui/parser/foreign-const-syntactic-fail.rs b/tests/ui/parser/foreign-const-syntactic-fail.rs
new file mode 100644
index 000000000..a6e77f846
--- /dev/null
+++ b/tests/ui/parser/foreign-const-syntactic-fail.rs
@@ -0,0 +1,9 @@
+// Syntactically, a `const` item inside an `extern { ... }` block is not allowed.
+
+fn main() {}
+
+#[cfg(FALSE)]
+extern "C" {
+    const A: isize; //~ ERROR extern items cannot be `const`
+    const B: isize = 42; //~ ERROR extern items cannot be `const`
+}
diff --git a/tests/ui/parser/foreign-const-syntactic-fail.stderr b/tests/ui/parser/foreign-const-syntactic-fail.stderr
new file mode 100644
index 000000000..9cf58fa95
--- /dev/null
+++ b/tests/ui/parser/foreign-const-syntactic-fail.stderr
@@ -0,0 +1,22 @@
+error: extern items cannot be `const`
+  --> $DIR/foreign-const-syntactic-fail.rs:7:11
+   |
+LL |     const A: isize;
+   |     ------^
+   |     |
+   |     help: try using a static value: `static`
+   |
+   = note: for more information, visit https://doc.rust-lang.org/std/keyword.extern.html
+
+error: extern items cannot be `const`
+  --> $DIR/foreign-const-syntactic-fail.rs:8:11
+   |
+LL |     const B: isize = 42;
+   |     ------^
+   |     |
+   |     help: try using a static value: `static`
+   |
+   = note: for more information, visit https://doc.rust-lang.org/std/keyword.extern.html
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/foreign-static-semantic-fail.rs b/tests/ui/parser/foreign-static-semantic-fail.rs
new file mode 100644
index 000000000..3d427ed0e
--- /dev/null
+++ b/tests/ui/parser/foreign-static-semantic-fail.rs
@@ -0,0 +1,8 @@
+// Syntactically, a foreign static may not have a body.
+
+fn main() {}
+
+extern "C" {
+    static X: u8 = 0; //~ ERROR incorrect `static` inside `extern` block
+    static mut Y: u8 = 0; //~ ERROR incorrect `static` inside `extern` block
+}
diff --git a/tests/ui/parser/foreign-static-semantic-fail.stderr b/tests/ui/parser/foreign-static-semantic-fail.stderr
new file mode 100644
index 000000000..105508cfe
--- /dev/null
+++ b/tests/ui/parser/foreign-static-semantic-fail.stderr
@@ -0,0 +1,27 @@
+error: incorrect `static` inside `extern` block
+  --> $DIR/foreign-static-semantic-fail.rs:6:12
+   |
+LL | extern "C" {
+   | ---------- `extern` blocks define existing foreign statics and statics inside of them cannot have a body
+LL |     static X: u8 = 0;
+   |            ^       - the invalid body
+   |            |
+   |            cannot have a body
+   |
+   = note: for more information, visit https://doc.rust-lang.org/std/keyword.extern.html
+
+error: incorrect `static` inside `extern` block
+  --> $DIR/foreign-static-semantic-fail.rs:7:16
+   |
+LL | extern "C" {
+   | ---------- `extern` blocks define existing foreign statics and statics inside of them cannot have a body
+LL |     static X: u8 = 0;
+LL |     static mut Y: u8 = 0;
+   |                ^       - the invalid body
+   |                |
+   |                cannot have a body
+   |
+   = note: for more information, visit https://doc.rust-lang.org/std/keyword.extern.html
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/foreign-static-syntactic-pass.rs b/tests/ui/parser/foreign-static-syntactic-pass.rs
new file mode 100644
index 000000000..599496346
--- /dev/null
+++ b/tests/ui/parser/foreign-static-syntactic-pass.rs
@@ -0,0 +1,11 @@
+// Syntactically, a foreign static may have a body.
+
+// check-pass
+
+fn main() {}
+
+#[cfg(FALSE)]
+extern "C" {
+    static X: u8;
+    static mut Y: u8;
+}
diff --git a/tests/ui/parser/foreign-ty-semantic-fail.rs b/tests/ui/parser/foreign-ty-semantic-fail.rs
new file mode 100644
index 000000000..96b15232b
--- /dev/null
+++ b/tests/ui/parser/foreign-ty-semantic-fail.rs
@@ -0,0 +1,18 @@
+#![feature(extern_types)]
+
+fn main() {}
+
+extern "C" {
+    type A: Ord;
+    //~^ ERROR bounds on `type`s in `extern` blocks have no effect
+    type B<'a> where 'a: 'static;
+    //~^ ERROR `type`s inside `extern` blocks cannot have generic parameters
+    //~| ERROR `type`s inside `extern` blocks cannot have `where` clauses
+    type C<T: Ord> where T: 'static;
+    //~^ ERROR `type`s inside `extern` blocks cannot have generic parameters
+    //~| ERROR `type`s inside `extern` blocks cannot have `where` clauses
+    type D = u8;
+    //~^ ERROR incorrect `type` inside `extern` block
+
+    type E: where;
+}
diff --git a/tests/ui/parser/foreign-ty-semantic-fail.stderr b/tests/ui/parser/foreign-ty-semantic-fail.stderr
new file mode 100644
index 000000000..588e4966a
--- /dev/null
+++ b/tests/ui/parser/foreign-ty-semantic-fail.stderr
@@ -0,0 +1,65 @@
+error: bounds on `type`s in `extern` blocks have no effect
+  --> $DIR/foreign-ty-semantic-fail.rs:6:13
+   |
+LL |     type A: Ord;
+   |             ^^^
+
+error: `type`s inside `extern` blocks cannot have generic parameters
+  --> $DIR/foreign-ty-semantic-fail.rs:8:11
+   |
+LL | extern "C" {
+   | ---------- `extern` block begins here
+...
+LL |     type B<'a> where 'a: 'static;
+   |           ^^^^ help: remove the generic parameters
+   |
+   = note: for more information, visit https://doc.rust-lang.org/std/keyword.extern.html
+
+error: `type`s inside `extern` blocks cannot have `where` clauses
+  --> $DIR/foreign-ty-semantic-fail.rs:8:16
+   |
+LL | extern "C" {
+   | ---------- `extern` block begins here
+...
+LL |     type B<'a> where 'a: 'static;
+   |                ^^^^^^^^^^^^^^^^^ help: remove the `where` clause
+   |
+   = note: for more information, visit https://doc.rust-lang.org/std/keyword.extern.html
+
+error: `type`s inside `extern` blocks cannot have generic parameters
+  --> $DIR/foreign-ty-semantic-fail.rs:11:11
+   |
+LL | extern "C" {
+   | ---------- `extern` block begins here
+...
+LL |     type C<T: Ord> where T: 'static;
+   |           ^^^^^^^^ help: remove the generic parameters
+   |
+   = note: for more information, visit https://doc.rust-lang.org/std/keyword.extern.html
+
+error: `type`s inside `extern` blocks cannot have `where` clauses
+  --> $DIR/foreign-ty-semantic-fail.rs:11:20
+   |
+LL | extern "C" {
+   | ---------- `extern` block begins here
+...
+LL |     type C<T: Ord> where T: 'static;
+   |                    ^^^^^^^^^^^^^^^^ help: remove the `where` clause
+   |
+   = note: for more information, visit https://doc.rust-lang.org/std/keyword.extern.html
+
+error: incorrect `type` inside `extern` block
+  --> $DIR/foreign-ty-semantic-fail.rs:14:10
+   |
+LL | extern "C" {
+   | ---------- `extern` blocks define existing foreign types and types inside of them cannot have a body
+...
+LL |     type D = u8;
+   |          ^   -- the invalid body
+   |          |
+   |          cannot have a body
+   |
+   = note: for more information, visit https://doc.rust-lang.org/std/keyword.extern.html
+
+error: aborting due to 6 previous errors
+
diff --git a/tests/ui/parser/foreign-ty-syntactic-pass.rs b/tests/ui/parser/foreign-ty-syntactic-pass.rs
new file mode 100644
index 000000000..a746de1f1
--- /dev/null
+++ b/tests/ui/parser/foreign-ty-syntactic-pass.rs
@@ -0,0 +1,12 @@
+// check-pass
+
+fn main() {}
+
+#[cfg(FALSE)]
+extern "C" {
+    type A: Ord;
+    type A<'a> where 'a: 'static;
+    type A<T: Ord> where T: 'static;
+    type A = u8;
+    type A<'a: 'static, T: Ord + 'static>: Eq + PartialEq where T: 'static + Copy = Vec<u8>;
+}
diff --git a/tests/ui/parser/if-block-unreachable-expr.rs b/tests/ui/parser/if-block-unreachable-expr.rs
new file mode 100644
index 000000000..4063a3370
--- /dev/null
+++ b/tests/ui/parser/if-block-unreachable-expr.rs
@@ -0,0 +1,8 @@
+// check-pass
+
+// This regressed from 1.20 -> 1.21 -- the condition is unreachable,
+// but it's still an expression, and should parse fine.
+
+fn main() {
+    if { if true { return; } else { return; }; } {}
+}
diff --git a/tests/ui/parser/if-in-in.fixed b/tests/ui/parser/if-in-in.fixed
new file mode 100644
index 000000000..0bb88c559
--- /dev/null
+++ b/tests/ui/parser/if-in-in.fixed
@@ -0,0 +1,7 @@
+// run-rustfix
+
+fn main() {
+    for i in 1..2 { //~ ERROR expected iterable, found keyword `in`
+        println!("{}", i);
+    }
+}
diff --git a/tests/ui/parser/if-in-in.rs b/tests/ui/parser/if-in-in.rs
new file mode 100644
index 000000000..6c0986fe1
--- /dev/null
+++ b/tests/ui/parser/if-in-in.rs
@@ -0,0 +1,7 @@
+// run-rustfix
+
+fn main() {
+    for i in in 1..2 { //~ ERROR expected iterable, found keyword `in`
+        println!("{}", i);
+    }
+}
diff --git a/tests/ui/parser/if-in-in.stderr b/tests/ui/parser/if-in-in.stderr
new file mode 100644
index 000000000..0e69bc4b2
--- /dev/null
+++ b/tests/ui/parser/if-in-in.stderr
@@ -0,0 +1,10 @@
+error: expected iterable, found keyword `in`
+  --> $DIR/if-in-in.rs:4:14
+   |
+LL |     for i in in 1..2 {
+   |           ---^^
+   |           |
+   |           help: remove the duplicated `in`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/impl-item-const-pass.rs b/tests/ui/parser/impl-item-const-pass.rs
new file mode 100644
index 000000000..d11245613
--- /dev/null
+++ b/tests/ui/parser/impl-item-const-pass.rs
@@ -0,0 +1,8 @@
+// check-pass
+
+fn main() {}
+
+#[cfg(FALSE)]
+impl X {
+    const Y: u8;
+}
diff --git a/tests/ui/parser/impl-item-const-semantic-fail.rs b/tests/ui/parser/impl-item-const-semantic-fail.rs
new file mode 100644
index 000000000..5d4692f9f
--- /dev/null
+++ b/tests/ui/parser/impl-item-const-semantic-fail.rs
@@ -0,0 +1,7 @@
+fn main() {}
+
+struct X;
+
+impl X {
+    const Y: u8; //~ ERROR associated constant in `impl` without body
+}
diff --git a/tests/ui/parser/impl-item-const-semantic-fail.stderr b/tests/ui/parser/impl-item-const-semantic-fail.stderr
new file mode 100644
index 000000000..ec3bee0ce
--- /dev/null
+++ b/tests/ui/parser/impl-item-const-semantic-fail.stderr
@@ -0,0 +1,10 @@
+error: associated constant in `impl` without body
+  --> $DIR/impl-item-const-semantic-fail.rs:6:5
+   |
+LL |     const Y: u8;
+   |     ^^^^^^^^^^^-
+   |                |
+   |                help: provide a definition for the constant: `= <expr>;`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/impl-item-fn-no-body-pass.rs b/tests/ui/parser/impl-item-fn-no-body-pass.rs
new file mode 100644
index 000000000..16b09d64e
--- /dev/null
+++ b/tests/ui/parser/impl-item-fn-no-body-pass.rs
@@ -0,0 +1,8 @@
+// check-pass
+
+fn main() {}
+
+#[cfg(FALSE)]
+impl X {
+    fn f();
+}
diff --git a/tests/ui/parser/impl-item-fn-no-body-semantic-fail.rs b/tests/ui/parser/impl-item-fn-no-body-semantic-fail.rs
new file mode 100644
index 000000000..cb183db59
--- /dev/null
+++ b/tests/ui/parser/impl-item-fn-no-body-semantic-fail.rs
@@ -0,0 +1,7 @@
+fn main() {}
+
+struct X;
+
+impl X {
+    fn f(); //~ ERROR associated function in `impl` without body
+}
diff --git a/tests/ui/parser/impl-item-fn-no-body-semantic-fail.stderr b/tests/ui/parser/impl-item-fn-no-body-semantic-fail.stderr
new file mode 100644
index 000000000..1acb72736
--- /dev/null
+++ b/tests/ui/parser/impl-item-fn-no-body-semantic-fail.stderr
@@ -0,0 +1,10 @@
+error: associated function in `impl` without body
+  --> $DIR/impl-item-fn-no-body-semantic-fail.rs:6:5
+   |
+LL |     fn f();
+   |     ^^^^^^-
+   |           |
+   |           help: provide a definition for the function: `{ <body> }`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/impl-item-type-no-body-pass.rs b/tests/ui/parser/impl-item-type-no-body-pass.rs
new file mode 100644
index 000000000..74a9c6ab7
--- /dev/null
+++ b/tests/ui/parser/impl-item-type-no-body-pass.rs
@@ -0,0 +1,11 @@
+// check-pass
+
+fn main() {}
+
+#[cfg(FALSE)]
+impl X {
+    type Y;
+    type Z: Ord;
+    type W: Ord where Self: Eq;
+    type W where Self: Eq;
+}
diff --git a/tests/ui/parser/impl-item-type-no-body-semantic-fail.rs b/tests/ui/parser/impl-item-type-no-body-semantic-fail.rs
new file mode 100644
index 000000000..1291a021b
--- /dev/null
+++ b/tests/ui/parser/impl-item-type-no-body-semantic-fail.rs
@@ -0,0 +1,20 @@
+fn main() {}
+
+struct X;
+
+impl X {
+    type Y;
+    //~^ ERROR associated type in `impl` without body
+    //~| ERROR inherent associated types are unstable
+    type Z: Ord;
+    //~^ ERROR associated type in `impl` without body
+    //~| ERROR bounds on `type`s in `impl`s have no effect
+    //~| ERROR inherent associated types are unstable
+    type W: Ord where Self: Eq;
+    //~^ ERROR associated type in `impl` without body
+    //~| ERROR bounds on `type`s in `impl`s have no effect
+    //~| ERROR inherent associated types are unstable
+    type W where Self: Eq;
+    //~^ ERROR associated type in `impl` without body
+    //~| ERROR inherent associated types are unstable
+}
diff --git a/tests/ui/parser/impl-item-type-no-body-semantic-fail.stderr b/tests/ui/parser/impl-item-type-no-body-semantic-fail.stderr
new file mode 100644
index 000000000..3856754e0
--- /dev/null
+++ b/tests/ui/parser/impl-item-type-no-body-semantic-fail.stderr
@@ -0,0 +1,83 @@
+error: associated type in `impl` without body
+  --> $DIR/impl-item-type-no-body-semantic-fail.rs:6:5
+   |
+LL |     type Y;
+   |     ^^^^^^-
+   |           |
+   |           help: provide a definition for the type: `= <type>;`
+
+error: associated type in `impl` without body
+  --> $DIR/impl-item-type-no-body-semantic-fail.rs:9:5
+   |
+LL |     type Z: Ord;
+   |     ^^^^^^^^^^^-
+   |                |
+   |                help: provide a definition for the type: `= <type>;`
+
+error: bounds on `type`s in `impl`s have no effect
+  --> $DIR/impl-item-type-no-body-semantic-fail.rs:9:13
+   |
+LL |     type Z: Ord;
+   |             ^^^
+
+error: associated type in `impl` without body
+  --> $DIR/impl-item-type-no-body-semantic-fail.rs:13:5
+   |
+LL |     type W: Ord where Self: Eq;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^-
+   |                               |
+   |                               help: provide a definition for the type: `= <type>;`
+
+error: bounds on `type`s in `impl`s have no effect
+  --> $DIR/impl-item-type-no-body-semantic-fail.rs:13:13
+   |
+LL |     type W: Ord where Self: Eq;
+   |             ^^^
+
+error: associated type in `impl` without body
+  --> $DIR/impl-item-type-no-body-semantic-fail.rs:17:5
+   |
+LL |     type W where Self: Eq;
+   |     ^^^^^^^^^^^^^^^^^^^^^-
+   |                          |
+   |                          help: provide a definition for the type: `= <type>;`
+
+error[E0658]: inherent associated types are unstable
+  --> $DIR/impl-item-type-no-body-semantic-fail.rs:6:5
+   |
+LL |     type Y;
+   |     ^^^^^^^
+   |
+   = note: see issue #8995 <https://github.com/rust-lang/rust/issues/8995> for more information
+   = help: add `#![feature(inherent_associated_types)]` to the crate attributes to enable
+
+error[E0658]: inherent associated types are unstable
+  --> $DIR/impl-item-type-no-body-semantic-fail.rs:9:5
+   |
+LL |     type Z: Ord;
+   |     ^^^^^^^^^^^^
+   |
+   = note: see issue #8995 <https://github.com/rust-lang/rust/issues/8995> for more information
+   = help: add `#![feature(inherent_associated_types)]` to the crate attributes to enable
+
+error[E0658]: inherent associated types are unstable
+  --> $DIR/impl-item-type-no-body-semantic-fail.rs:13:5
+   |
+LL |     type W: Ord where Self: Eq;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: see issue #8995 <https://github.com/rust-lang/rust/issues/8995> for more information
+   = help: add `#![feature(inherent_associated_types)]` to the crate attributes to enable
+
+error[E0658]: inherent associated types are unstable
+  --> $DIR/impl-item-type-no-body-semantic-fail.rs:17:5
+   |
+LL |     type W where Self: Eq;
+   |     ^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: see issue #8995 <https://github.com/rust-lang/rust/issues/8995> for more information
+   = help: add `#![feature(inherent_associated_types)]` to the crate attributes to enable
+
+error: aborting due to 10 previous errors
+
+For more information about this error, try `rustc --explain E0658`.
diff --git a/tests/ui/parser/impl-parsing.rs b/tests/ui/parser/impl-parsing.rs
new file mode 100644
index 000000000..80ce88855
--- /dev/null
+++ b/tests/ui/parser/impl-parsing.rs
@@ -0,0 +1,10 @@
+impl ! {} // OK
+impl ! where u8: Copy {} // OK
+
+impl Trait Type {} //~ ERROR missing `for` in a trait impl
+impl Trait .. {} //~ ERROR missing `for` in a trait impl
+impl ?Sized for Type {} //~ ERROR expected a trait, found type
+impl ?Sized for .. {} //~ ERROR expected a trait, found type
+
+default unsafe FAIL //~ ERROR expected item, found keyword `unsafe`
+//~^ ERROR `default` is not followed by an item
diff --git a/tests/ui/parser/impl-parsing.stderr b/tests/ui/parser/impl-parsing.stderr
new file mode 100644
index 000000000..755addf14
--- /dev/null
+++ b/tests/ui/parser/impl-parsing.stderr
@@ -0,0 +1,40 @@
+error: missing `for` in a trait impl
+  --> $DIR/impl-parsing.rs:4:11
+   |
+LL | impl Trait Type {}
+   |           ^ help: add `for` here
+
+error: missing `for` in a trait impl
+  --> $DIR/impl-parsing.rs:5:11
+   |
+LL | impl Trait .. {}
+   |           ^ help: add `for` here
+
+error: expected a trait, found type
+  --> $DIR/impl-parsing.rs:6:6
+   |
+LL | impl ?Sized for Type {}
+   |      ^^^^^^
+
+error: expected a trait, found type
+  --> $DIR/impl-parsing.rs:7:6
+   |
+LL | impl ?Sized for .. {}
+   |      ^^^^^^
+
+error: `default` is not followed by an item
+  --> $DIR/impl-parsing.rs:9:1
+   |
+LL | default unsafe FAIL
+   | ^^^^^^^ the `default` qualifier
+   |
+   = note: only `fn`, `const`, `type`, or `impl` items may be prefixed by `default`
+
+error: expected item, found keyword `unsafe`
+  --> $DIR/impl-parsing.rs:9:9
+   |
+LL | default unsafe FAIL
+   |         ^^^^^^ expected item
+
+error: aborting due to 6 previous errors
+
diff --git a/tests/ui/parser/impl-qpath.rs b/tests/ui/parser/impl-qpath.rs
new file mode 100644
index 000000000..d1f0a0204
--- /dev/null
+++ b/tests/ui/parser/impl-qpath.rs
@@ -0,0 +1,7 @@
+// check-pass
+// compile-flags: -Z parse-only
+
+impl <*const u8>::AssocTy {} // OK
+impl <Type as Trait>::AssocTy {} // OK
+impl <'a + Trait>::AssocTy {} // OK
+impl <<Type>::AssocTy>::AssocTy {} // OK
diff --git a/tests/ui/parser/import-from-path.rs b/tests/ui/parser/import-from-path.rs
new file mode 100644
index 000000000..3fce08259
--- /dev/null
+++ b/tests/ui/parser/import-from-path.rs
@@ -0,0 +1,2 @@
+// error-pattern:expected
+use foo::{bar}::baz
diff --git a/tests/ui/parser/import-from-path.stderr b/tests/ui/parser/import-from-path.stderr
new file mode 100644
index 000000000..93bdf82d0
--- /dev/null
+++ b/tests/ui/parser/import-from-path.stderr
@@ -0,0 +1,10 @@
+error: expected `;`, found `::`
+  --> $DIR/import-from-path.rs:2:15
+   |
+LL | use foo::{bar}::baz
+   |               ^^ expected `;`
+   |
+   = note: glob-like brace syntax must be last on the path
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/import-from-rename.rs b/tests/ui/parser/import-from-rename.rs
new file mode 100644
index 000000000..27425a3c9
--- /dev/null
+++ b/tests/ui/parser/import-from-rename.rs
@@ -0,0 +1,10 @@
+// error-pattern:expected
+
+use foo::{bar} as baz;
+
+mod foo {
+    pub fn bar() {}
+}
+
+fn main() {
+}
diff --git a/tests/ui/parser/import-from-rename.stderr b/tests/ui/parser/import-from-rename.stderr
new file mode 100644
index 000000000..d78f6de92
--- /dev/null
+++ b/tests/ui/parser/import-from-rename.stderr
@@ -0,0 +1,10 @@
+error: expected `;`, found keyword `as`
+  --> $DIR/import-from-rename.rs:3:16
+   |
+LL | use foo::{bar} as baz;
+   |                ^^ expected `;`
+   |
+   = note: glob-like brace syntax must be last on the path
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/import-glob-path.rs b/tests/ui/parser/import-glob-path.rs
new file mode 100644
index 000000000..de4c07aa7
--- /dev/null
+++ b/tests/ui/parser/import-glob-path.rs
@@ -0,0 +1,2 @@
+// error-pattern:expected
+use foo::*::bar
diff --git a/tests/ui/parser/import-glob-path.stderr b/tests/ui/parser/import-glob-path.stderr
new file mode 100644
index 000000000..a93ef255c
--- /dev/null
+++ b/tests/ui/parser/import-glob-path.stderr
@@ -0,0 +1,10 @@
+error: expected `;`, found `::`
+  --> $DIR/import-glob-path.rs:2:11
+   |
+LL | use foo::*::bar
+   |           ^^ expected `;`
+   |
+   = note: the wildcard token must be last on the path
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/import-glob-rename.rs b/tests/ui/parser/import-glob-rename.rs
new file mode 100644
index 000000000..b9b753dcd
--- /dev/null
+++ b/tests/ui/parser/import-glob-rename.rs
@@ -0,0 +1,10 @@
+// error-pattern:expected
+
+use foo::* as baz;
+
+mod foo {
+    pub fn bar() {}
+}
+
+fn main() {
+}
diff --git a/tests/ui/parser/import-glob-rename.stderr b/tests/ui/parser/import-glob-rename.stderr
new file mode 100644
index 000000000..e1a026b63
--- /dev/null
+++ b/tests/ui/parser/import-glob-rename.stderr
@@ -0,0 +1,10 @@
+error: expected `;`, found keyword `as`
+  --> $DIR/import-glob-rename.rs:3:12
+   |
+LL | use foo::* as baz;
+   |            ^^ expected `;`
+   |
+   = note: the wildcard token must be last on the path
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/increment-autofix-2.fixed b/tests/ui/parser/increment-autofix-2.fixed
new file mode 100644
index 000000000..580ebaf5d
--- /dev/null
+++ b/tests/ui/parser/increment-autofix-2.fixed
@@ -0,0 +1,63 @@
+// run-rustfix
+
+struct Foo {
+    bar: Bar,
+}
+
+struct Bar {
+    qux: i32,
+}
+
+pub fn post_regular() {
+    let mut i = 0;
+    i += 1; //~ ERROR Rust has no postfix increment operator
+    println!("{}", i);
+}
+
+pub fn post_while() {
+    let mut i = 0;
+    while { let tmp = i; i += 1; tmp } < 5 {
+        //~^ ERROR Rust has no postfix increment operator
+        println!("{}", i);
+    }
+}
+
+pub fn post_regular_tmp() {
+    let mut tmp = 0;
+    tmp += 1; //~ ERROR Rust has no postfix increment operator
+    println!("{}", tmp);
+}
+
+pub fn post_while_tmp() {
+    let mut tmp = 0;
+    while { let tmp_ = tmp; tmp += 1; tmp_ } < 5 {
+        //~^ ERROR Rust has no postfix increment operator
+        println!("{}", tmp);
+    }
+}
+
+pub fn post_field() {
+    let mut foo = Foo { bar: Bar { qux: 0 } };
+    foo.bar.qux += 1;
+    //~^ ERROR Rust has no postfix increment operator
+    println!("{}", foo.bar.qux);
+}
+
+pub fn post_field_tmp() {
+    struct S {
+        tmp: i32
+    }
+    let mut s = S { tmp: 0 };
+    s.tmp += 1;
+    //~^ ERROR Rust has no postfix increment operator
+    println!("{}", s.tmp);
+}
+
+pub fn pre_field() {
+    let mut foo = Foo { bar: Bar { qux: 0 } };
+    foo.bar.qux += 1;
+    //~^ ERROR Rust has no prefix increment operator
+    println!("{}", foo.bar.qux);
+}
+
+fn main() {}
diff --git a/tests/ui/parser/increment-autofix-2.rs b/tests/ui/parser/increment-autofix-2.rs
new file mode 100644
index 000000000..ebe5fa6ca
--- /dev/null
+++ b/tests/ui/parser/increment-autofix-2.rs
@@ -0,0 +1,63 @@
+// run-rustfix
+
+struct Foo {
+    bar: Bar,
+}
+
+struct Bar {
+    qux: i32,
+}
+
+pub fn post_regular() {
+    let mut i = 0;
+    i++; //~ ERROR Rust has no postfix increment operator
+    println!("{}", i);
+}
+
+pub fn post_while() {
+    let mut i = 0;
+    while i++ < 5 {
+        //~^ ERROR Rust has no postfix increment operator
+        println!("{}", i);
+    }
+}
+
+pub fn post_regular_tmp() {
+    let mut tmp = 0;
+    tmp++; //~ ERROR Rust has no postfix increment operator
+    println!("{}", tmp);
+}
+
+pub fn post_while_tmp() {
+    let mut tmp = 0;
+    while tmp++ < 5 {
+        //~^ ERROR Rust has no postfix increment operator
+        println!("{}", tmp);
+    }
+}
+
+pub fn post_field() {
+    let mut foo = Foo { bar: Bar { qux: 0 } };
+    foo.bar.qux++;
+    //~^ ERROR Rust has no postfix increment operator
+    println!("{}", foo.bar.qux);
+}
+
+pub fn post_field_tmp() {
+    struct S {
+        tmp: i32
+    }
+    let mut s = S { tmp: 0 };
+    s.tmp++;
+    //~^ ERROR Rust has no postfix increment operator
+    println!("{}", s.tmp);
+}
+
+pub fn pre_field() {
+    let mut foo = Foo { bar: Bar { qux: 0 } };
+    ++foo.bar.qux;
+    //~^ ERROR Rust has no prefix increment operator
+    println!("{}", foo.bar.qux);
+}
+
+fn main() {}
diff --git a/tests/ui/parser/increment-autofix-2.stderr b/tests/ui/parser/increment-autofix-2.stderr
new file mode 100644
index 000000000..11e985480
--- /dev/null
+++ b/tests/ui/parser/increment-autofix-2.stderr
@@ -0,0 +1,84 @@
+error: Rust has no postfix increment operator
+  --> $DIR/increment-autofix-2.rs:13:6
+   |
+LL |     i++;
+   |      ^^ not a valid postfix operator
+   |
+help: use `+= 1` instead
+   |
+LL |     i += 1;
+   |       ~~~~
+
+error: Rust has no postfix increment operator
+  --> $DIR/increment-autofix-2.rs:19:12
+   |
+LL |     while i++ < 5 {
+   |     -----  ^^ not a valid postfix operator
+   |     |
+   |     while parsing the condition of this `while` expression
+   |
+help: use `+= 1` instead
+   |
+LL |     while { let tmp = i; i += 1; tmp } < 5 {
+   |           +++++++++++  ~~~~~~~~~~~~~~~
+
+error: Rust has no postfix increment operator
+  --> $DIR/increment-autofix-2.rs:27:8
+   |
+LL |     tmp++;
+   |        ^^ not a valid postfix operator
+   |
+help: use `+= 1` instead
+   |
+LL |     tmp += 1;
+   |         ~~~~
+
+error: Rust has no postfix increment operator
+  --> $DIR/increment-autofix-2.rs:33:14
+   |
+LL |     while tmp++ < 5 {
+   |     -----    ^^ not a valid postfix operator
+   |     |
+   |     while parsing the condition of this `while` expression
+   |
+help: use `+= 1` instead
+   |
+LL |     while { let tmp_ = tmp; tmp += 1; tmp_ } < 5 {
+   |           ++++++++++++    ~~~~~~~~~~~~~~~~~~
+
+error: Rust has no postfix increment operator
+  --> $DIR/increment-autofix-2.rs:41:16
+   |
+LL |     foo.bar.qux++;
+   |                ^^ not a valid postfix operator
+   |
+help: use `+= 1` instead
+   |
+LL |     foo.bar.qux += 1;
+   |                 ~~~~
+
+error: Rust has no postfix increment operator
+  --> $DIR/increment-autofix-2.rs:51:10
+   |
+LL |     s.tmp++;
+   |          ^^ not a valid postfix operator
+   |
+help: use `+= 1` instead
+   |
+LL |     s.tmp += 1;
+   |           ~~~~
+
+error: Rust has no prefix increment operator
+  --> $DIR/increment-autofix-2.rs:58:5
+   |
+LL |     ++foo.bar.qux;
+   |     ^^ not a valid prefix operator
+   |
+help: use `+= 1` instead
+   |
+LL -     ++foo.bar.qux;
+LL +     foo.bar.qux += 1;
+   |
+
+error: aborting due to 7 previous errors
+
diff --git a/tests/ui/parser/increment-autofix.fixed b/tests/ui/parser/increment-autofix.fixed
new file mode 100644
index 000000000..7a426badf
--- /dev/null
+++ b/tests/ui/parser/increment-autofix.fixed
@@ -0,0 +1,31 @@
+// run-rustfix
+
+pub fn pre_regular() {
+    let mut i = 0;
+    i += 1; //~ ERROR Rust has no prefix increment operator
+    println!("{}", i);
+}
+
+pub fn pre_while() {
+    let mut i = 0;
+    while { i += 1; i } < 5 {
+        //~^ ERROR Rust has no prefix increment operator
+        println!("{}", i);
+    }
+}
+
+pub fn pre_regular_tmp() {
+    let mut tmp = 0;
+    tmp += 1; //~ ERROR Rust has no prefix increment operator
+    println!("{}", tmp);
+}
+
+pub fn pre_while_tmp() {
+    let mut tmp = 0;
+    while { tmp += 1; tmp } < 5 {
+        //~^ ERROR Rust has no prefix increment operator
+        println!("{}", tmp);
+    }
+}
+
+fn main() {}
diff --git a/tests/ui/parser/increment-autofix.rs b/tests/ui/parser/increment-autofix.rs
new file mode 100644
index 000000000..d38603697
--- /dev/null
+++ b/tests/ui/parser/increment-autofix.rs
@@ -0,0 +1,31 @@
+// run-rustfix
+
+pub fn pre_regular() {
+    let mut i = 0;
+    ++i; //~ ERROR Rust has no prefix increment operator
+    println!("{}", i);
+}
+
+pub fn pre_while() {
+    let mut i = 0;
+    while ++i < 5 {
+        //~^ ERROR Rust has no prefix increment operator
+        println!("{}", i);
+    }
+}
+
+pub fn pre_regular_tmp() {
+    let mut tmp = 0;
+    ++tmp; //~ ERROR Rust has no prefix increment operator
+    println!("{}", tmp);
+}
+
+pub fn pre_while_tmp() {
+    let mut tmp = 0;
+    while ++tmp < 5 {
+        //~^ ERROR Rust has no prefix increment operator
+        println!("{}", tmp);
+    }
+}
+
+fn main() {}
diff --git a/tests/ui/parser/increment-autofix.stderr b/tests/ui/parser/increment-autofix.stderr
new file mode 100644
index 000000000..1dc69fd9f
--- /dev/null
+++ b/tests/ui/parser/increment-autofix.stderr
@@ -0,0 +1,52 @@
+error: Rust has no prefix increment operator
+  --> $DIR/increment-autofix.rs:5:5
+   |
+LL |     ++i;
+   |     ^^ not a valid prefix operator
+   |
+help: use `+= 1` instead
+   |
+LL -     ++i;
+LL +     i += 1;
+   |
+
+error: Rust has no prefix increment operator
+  --> $DIR/increment-autofix.rs:11:11
+   |
+LL |     while ++i < 5 {
+   |     ----- ^^ not a valid prefix operator
+   |     |
+   |     while parsing the condition of this `while` expression
+   |
+help: use `+= 1` instead
+   |
+LL |     while { i += 1; i } < 5 {
+   |           ~   +++++++++
+
+error: Rust has no prefix increment operator
+  --> $DIR/increment-autofix.rs:19:5
+   |
+LL |     ++tmp;
+   |     ^^ not a valid prefix operator
+   |
+help: use `+= 1` instead
+   |
+LL -     ++tmp;
+LL +     tmp += 1;
+   |
+
+error: Rust has no prefix increment operator
+  --> $DIR/increment-autofix.rs:25:11
+   |
+LL |     while ++tmp < 5 {
+   |     ----- ^^ not a valid prefix operator
+   |     |
+   |     while parsing the condition of this `while` expression
+   |
+help: use `+= 1` instead
+   |
+LL |     while { tmp += 1; tmp } < 5 {
+   |           ~     +++++++++++
+
+error: aborting due to 4 previous errors
+
diff --git a/tests/ui/parser/inner-attr-after-doc-comment.rs b/tests/ui/parser/inner-attr-after-doc-comment.rs
new file mode 100644
index 000000000..36f4191f0
--- /dev/null
+++ b/tests/ui/parser/inner-attr-after-doc-comment.rs
@@ -0,0 +1,8 @@
+#![feature(lang_items)]
+/**
+ * My module
+ */
+
+#![recursion_limit="100"]
+//~^ ERROR an inner attribute is not permitted following an outer doc comment
+fn main() {}
diff --git a/tests/ui/parser/inner-attr-after-doc-comment.stderr b/tests/ui/parser/inner-attr-after-doc-comment.stderr
new file mode 100644
index 000000000..3ec3ad8e9
--- /dev/null
+++ b/tests/ui/parser/inner-attr-after-doc-comment.stderr
@@ -0,0 +1,23 @@
+error: an inner attribute is not permitted following an outer doc comment
+  --> $DIR/inner-attr-after-doc-comment.rs:6:1
+   |
+LL | / /**
+LL | |  * My module
+LL | |  */
+   | |___- previous doc comment
+LL |
+LL |   #![recursion_limit="100"]
+   |   ^^^^^^^^^^^^^^^^^^^^^^^^^ not permitted following an outer doc comment
+LL |
+LL |   fn main() {}
+   |   ------------ the inner attribute doesn't annotate this function
+   |
+   = note: inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually found at the beginning of source files
+help: to annotate the function, change the attribute from inner to outer style
+   |
+LL - #![recursion_limit="100"]
+LL + #[recursion_limit="100"]
+   |
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/inner-attr-in-trait-def.rs b/tests/ui/parser/inner-attr-in-trait-def.rs
new file mode 100644
index 000000000..8dba6b362
--- /dev/null
+++ b/tests/ui/parser/inner-attr-in-trait-def.rs
@@ -0,0 +1,9 @@
+// check-pass
+
+#![deny(non_camel_case_types)]
+
+fn main() {}
+
+trait foo_bar {
+    #![allow(non_camel_case_types)]
+}
diff --git a/tests/ui/parser/inner-attr.rs b/tests/ui/parser/inner-attr.rs
new file mode 100644
index 000000000..1b405e20e
--- /dev/null
+++ b/tests/ui/parser/inner-attr.rs
@@ -0,0 +1,4 @@
+#[feature(lang_items)]
+
+#![recursion_limit="100"] //~ ERROR an inner attribute is not permitted following an outer attribute
+fn main() {}
diff --git a/tests/ui/parser/inner-attr.stderr b/tests/ui/parser/inner-attr.stderr
new file mode 100644
index 000000000..331c254a5
--- /dev/null
+++ b/tests/ui/parser/inner-attr.stderr
@@ -0,0 +1,20 @@
+error: an inner attribute is not permitted following an outer attribute
+  --> $DIR/inner-attr.rs:3:1
+   |
+LL | #[feature(lang_items)]
+   | ---------------------- previous outer attribute
+LL |
+LL | #![recursion_limit="100"]
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^ not permitted following an outer attribute
+LL | fn main() {}
+   | ------------ the inner attribute doesn't annotate this function
+   |
+   = note: inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually found at the beginning of source files
+help: to annotate the function, change the attribute from inner to outer style
+   |
+LL - #![recursion_limit="100"]
+LL + #[recursion_limit="100"]
+   |
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/int-literal-too-large-span.rs b/tests/ui/parser/int-literal-too-large-span.rs
new file mode 100644
index 000000000..666ca9350
--- /dev/null
+++ b/tests/ui/parser/int-literal-too-large-span.rs
@@ -0,0 +1,7 @@
+// issue #17123
+
+fn main() {
+    9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999
+    //~^ ERROR integer literal is too large
+        ; // the span shouldn't point to this.
+}
diff --git a/tests/ui/parser/int-literal-too-large-span.stderr b/tests/ui/parser/int-literal-too-large-span.stderr
new file mode 100644
index 000000000..49d6aa5ef
--- /dev/null
+++ b/tests/ui/parser/int-literal-too-large-span.stderr
@@ -0,0 +1,10 @@
+error: integer literal is too large
+  --> $DIR/int-literal-too-large-span.rs:4:5
+   |
+LL |     9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: value exceeds limit of `340282366920938463463374607431768211455`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/intersection-patterns-1.fixed b/tests/ui/parser/intersection-patterns-1.fixed
new file mode 100644
index 000000000..44773095b
--- /dev/null
+++ b/tests/ui/parser/intersection-patterns-1.fixed
@@ -0,0 +1,35 @@
+// This tests the parser recovery in `recover_intersection_pat`
+// and serves as a regression test for the diagnostics issue #65400.
+//
+// The general idea is that for `$pat_lhs @ $pat_rhs` where
+// `$pat_lhs` is not generated by `ref? mut? $ident` we want
+// to suggest either switching the order or note that intersection
+// patterns are not allowed.
+
+// run-rustfix
+
+#![allow(unused_variables)]
+
+fn main() {
+    let s: Option<u8> = None;
+
+    match s {
+        y @ Some(x) => {}
+        //~^ ERROR pattern on wrong side of `@`
+        //~| pattern on the left, should be on the right
+        //~| binding on the right, should be on the left
+        //~| HELP switch the order
+        //~| SUGGESTION y @ Some(x)
+        _ => {}
+    }
+
+    match 2 {
+        e @ 1..=5 => {}
+        //~^ ERROR pattern on wrong side of `@`
+        //~| pattern on the left, should be on the right
+        //~| binding on the right, should be on the left
+        //~| HELP switch the order
+        //~| SUGGESTION e @ 1..=5
+        _ => {}
+    }
+}
diff --git a/tests/ui/parser/intersection-patterns-1.rs b/tests/ui/parser/intersection-patterns-1.rs
new file mode 100644
index 000000000..1036b9daf
--- /dev/null
+++ b/tests/ui/parser/intersection-patterns-1.rs
@@ -0,0 +1,35 @@
+// This tests the parser recovery in `recover_intersection_pat`
+// and serves as a regression test for the diagnostics issue #65400.
+//
+// The general idea is that for `$pat_lhs @ $pat_rhs` where
+// `$pat_lhs` is not generated by `ref? mut? $ident` we want
+// to suggest either switching the order or note that intersection
+// patterns are not allowed.
+
+// run-rustfix
+
+#![allow(unused_variables)]
+
+fn main() {
+    let s: Option<u8> = None;
+
+    match s {
+        Some(x) @ y => {}
+        //~^ ERROR pattern on wrong side of `@`
+        //~| pattern on the left, should be on the right
+        //~| binding on the right, should be on the left
+        //~| HELP switch the order
+        //~| SUGGESTION y @ Some(x)
+        _ => {}
+    }
+
+    match 2 {
+        1 ..= 5 @ e => {}
+        //~^ ERROR pattern on wrong side of `@`
+        //~| pattern on the left, should be on the right
+        //~| binding on the right, should be on the left
+        //~| HELP switch the order
+        //~| SUGGESTION e @ 1..=5
+        _ => {}
+    }
+}
diff --git a/tests/ui/parser/intersection-patterns-1.stderr b/tests/ui/parser/intersection-patterns-1.stderr
new file mode 100644
index 000000000..dc968656c
--- /dev/null
+++ b/tests/ui/parser/intersection-patterns-1.stderr
@@ -0,0 +1,22 @@
+error: pattern on wrong side of `@`
+  --> $DIR/intersection-patterns-1.rs:17:9
+   |
+LL |         Some(x) @ y => {}
+   |         -------^^^-
+   |         |         |
+   |         |         binding on the right, should be on the left
+   |         pattern on the left, should be on the right
+   |         help: switch the order: `y @ Some(x)`
+
+error: pattern on wrong side of `@`
+  --> $DIR/intersection-patterns-1.rs:27:9
+   |
+LL |         1 ..= 5 @ e => {}
+   |         -------^^^-
+   |         |         |
+   |         |         binding on the right, should be on the left
+   |         pattern on the left, should be on the right
+   |         help: switch the order: `e @ 1..=5`
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/intersection-patterns-2.rs b/tests/ui/parser/intersection-patterns-2.rs
new file mode 100644
index 000000000..408415e87
--- /dev/null
+++ b/tests/ui/parser/intersection-patterns-2.rs
@@ -0,0 +1,20 @@
+// This tests the parser recovery in `recover_intersection_pat`
+// and serves as a regression test for the diagnostics issue #65400.
+//
+// The general idea is that for `$pat_lhs @ $pat_rhs` where
+// `$pat_lhs` is not generated by `ref? mut? $ident` we want
+// to suggest either switching the order or note that intersection
+// patterns are not allowed.
+
+fn main() {
+    let s: Option<u8> = None;
+
+    match s {
+        Some(x) @ Some(y) => {}
+        //~^ ERROR left-hand side of `@` must be a binding
+        //~| interpreted as a pattern, not a binding
+        //~| also a pattern
+        //~| NOTE bindings are `x`, `mut x`, `ref x`, and `ref mut x`
+        _ => {}
+    }
+}
diff --git a/tests/ui/parser/intersection-patterns-2.stderr b/tests/ui/parser/intersection-patterns-2.stderr
new file mode 100644
index 000000000..f7e78814c
--- /dev/null
+++ b/tests/ui/parser/intersection-patterns-2.stderr
@@ -0,0 +1,13 @@
+error: left-hand side of `@` must be a binding
+  --> $DIR/intersection-patterns-2.rs:13:9
+   |
+LL |         Some(x) @ Some(y) => {}
+   |         -------^^^-------
+   |         |         |
+   |         |         also a pattern
+   |         interpreted as a pattern, not a binding
+   |
+   = note: bindings are `x`, `mut x`, `ref x`, and `ref mut x`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/inverted-parameters.rs b/tests/ui/parser/inverted-parameters.rs
new file mode 100644
index 000000000..5c4272504
--- /dev/null
+++ b/tests/ui/parser/inverted-parameters.rs
@@ -0,0 +1,32 @@
+struct S;
+
+impl S {
+    fn foo(&self, &str bar) {}
+    //~^ ERROR expected one of `:`, `@`
+    //~| HELP declare the type after the parameter binding
+    //~| SUGGESTION <identifier>: <type>
+}
+
+fn baz(S quux, xyzzy: i32) {}
+//~^ ERROR expected one of `:`, `@`
+//~| HELP declare the type after the parameter binding
+//~| SUGGESTION <identifier>: <type>
+
+fn one(i32 a b) {}
+//~^ ERROR expected one of `:`, `@`
+
+fn pattern((i32, i32) (a, b)) {}
+//~^ ERROR expected one of `:`
+
+fn fizz(i32) {}
+//~^ ERROR expected one of `:`, `@`
+//~| HELP if this is a parameter name, give it a type
+//~| HELP if this is a `self` type, give it a parameter name
+//~| HELP if this is a type, explicitly ignore the parameter name
+
+fn missing_colon(quux S) {}
+//~^ ERROR expected one of `:`, `@`
+//~| HELP declare the type after the parameter binding
+//~| SUGGESTION <identifier>: <type>
+
+fn main() {}
diff --git a/tests/ui/parser/inverted-parameters.stderr b/tests/ui/parser/inverted-parameters.stderr
new file mode 100644
index 000000000..866227782
--- /dev/null
+++ b/tests/ui/parser/inverted-parameters.stderr
@@ -0,0 +1,61 @@
+error: expected one of `:`, `@`, or `|`, found `bar`
+  --> $DIR/inverted-parameters.rs:4:24
+   |
+LL |     fn foo(&self, &str bar) {}
+   |                   -----^^^
+   |                   |    |
+   |                   |    expected one of `:`, `@`, or `|`
+   |                   help: declare the type after the parameter binding: `<identifier>: <type>`
+
+error: expected one of `:`, `@`, or `|`, found `quux`
+  --> $DIR/inverted-parameters.rs:10:10
+   |
+LL | fn baz(S quux, xyzzy: i32) {}
+   |        --^^^^
+   |        | |
+   |        | expected one of `:`, `@`, or `|`
+   |        help: declare the type after the parameter binding: `<identifier>: <type>`
+
+error: expected one of `:`, `@`, or `|`, found `a`
+  --> $DIR/inverted-parameters.rs:15:12
+   |
+LL | fn one(i32 a b) {}
+   |            ^ expected one of `:`, `@`, or `|`
+
+error: expected one of `:` or `|`, found `(`
+  --> $DIR/inverted-parameters.rs:18:23
+   |
+LL | fn pattern((i32, i32) (a, b)) {}
+   |                       ^ expected one of `:` or `|`
+
+error: expected one of `:`, `@`, or `|`, found `)`
+  --> $DIR/inverted-parameters.rs:21:12
+   |
+LL | fn fizz(i32) {}
+   |            ^ expected one of `:`, `@`, or `|`
+   |
+   = note: anonymous parameters are removed in the 2018 edition (see RFC 1685)
+help: if this is a `self` type, give it a parameter name
+   |
+LL | fn fizz(self: i32) {}
+   |         +++++
+help: if this is a parameter name, give it a type
+   |
+LL | fn fizz(i32: TypeName) {}
+   |            ++++++++++
+help: if this is a type, explicitly ignore the parameter name
+   |
+LL | fn fizz(_: i32) {}
+   |         ++
+
+error: expected one of `:`, `@`, or `|`, found `S`
+  --> $DIR/inverted-parameters.rs:27:23
+   |
+LL | fn missing_colon(quux S) {}
+   |                  -----^
+   |                  |    |
+   |                  |    expected one of `:`, `@`, or `|`
+   |                  help: declare the type after the parameter binding: `<identifier>: <type>`
+
+error: aborting due to 6 previous errors
+
diff --git a/tests/ui/parser/issue-100197-mut-let.fixed b/tests/ui/parser/issue-100197-mut-let.fixed
new file mode 100644
index 000000000..5a8956222
--- /dev/null
+++ b/tests/ui/parser/issue-100197-mut-let.fixed
@@ -0,0 +1,6 @@
+// run-rustfix
+
+fn main() {
+    let mut _x = 123;
+    //~^ ERROR invalid variable declaration
+}
diff --git a/tests/ui/parser/issue-100197-mut-let.rs b/tests/ui/parser/issue-100197-mut-let.rs
new file mode 100644
index 000000000..71103813a
--- /dev/null
+++ b/tests/ui/parser/issue-100197-mut-let.rs
@@ -0,0 +1,6 @@
+// run-rustfix
+
+fn main() {
+    mut let _x = 123;
+    //~^ ERROR invalid variable declaration
+}
diff --git a/tests/ui/parser/issue-100197-mut-let.stderr b/tests/ui/parser/issue-100197-mut-let.stderr
new file mode 100644
index 000000000..86658e4f3
--- /dev/null
+++ b/tests/ui/parser/issue-100197-mut-let.stderr
@@ -0,0 +1,8 @@
+error: invalid variable declaration
+  --> $DIR/issue-100197-mut-let.rs:4:5
+   |
+LL |     mut let _x = 123;
+   |     ^^^^^^^ help: switch the order of `mut` and `let`: `let mut`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issue-101477-enum.fixed b/tests/ui/parser/issue-101477-enum.fixed
new file mode 100644
index 000000000..1dfeae22a
--- /dev/null
+++ b/tests/ui/parser/issue-101477-enum.fixed
@@ -0,0 +1,10 @@
+// run-rustfix
+
+#[allow(dead_code)]
+enum Demo {
+    A = 1,
+    B = 2 //~ ERROR unexpected `==`
+    //~^ expected item, found `==`
+}
+
+fn main() {}
diff --git a/tests/ui/parser/issue-101477-enum.rs b/tests/ui/parser/issue-101477-enum.rs
new file mode 100644
index 000000000..ea7051d69
--- /dev/null
+++ b/tests/ui/parser/issue-101477-enum.rs
@@ -0,0 +1,10 @@
+// run-rustfix
+
+#[allow(dead_code)]
+enum Demo {
+    A = 1,
+    B == 2 //~ ERROR unexpected `==`
+    //~^ expected item, found `==`
+}
+
+fn main() {}
diff --git a/tests/ui/parser/issue-101477-enum.stderr b/tests/ui/parser/issue-101477-enum.stderr
new file mode 100644
index 000000000..1edca391e
--- /dev/null
+++ b/tests/ui/parser/issue-101477-enum.stderr
@@ -0,0 +1,16 @@
+error: unexpected `==`
+  --> $DIR/issue-101477-enum.rs:6:7
+   |
+LL |     B == 2
+   |       ^^ help: try using `=` instead
+   |
+   = help: enum variants can be `Variant`, `Variant = <integer>`, `Variant(Type, ..., TypeN)` or `Variant { fields: Types }`
+
+error: expected item, found `==`
+  --> $DIR/issue-101477-enum.rs:6:7
+   |
+LL |     B == 2
+   |       ^^ expected item
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/issue-101477-let.fixed b/tests/ui/parser/issue-101477-let.fixed
new file mode 100644
index 000000000..9989ad815
--- /dev/null
+++ b/tests/ui/parser/issue-101477-let.fixed
@@ -0,0 +1,6 @@
+// run-rustfix
+
+fn main() {
+    let x = 2; //~ ERROR unexpected `==`
+    println!("x: {}", x)
+}
diff --git a/tests/ui/parser/issue-101477-let.rs b/tests/ui/parser/issue-101477-let.rs
new file mode 100644
index 000000000..8b0e8bee1
--- /dev/null
+++ b/tests/ui/parser/issue-101477-let.rs
@@ -0,0 +1,6 @@
+// run-rustfix
+
+fn main() {
+    let x == 2; //~ ERROR unexpected `==`
+    println!("x: {}", x)
+}
diff --git a/tests/ui/parser/issue-101477-let.stderr b/tests/ui/parser/issue-101477-let.stderr
new file mode 100644
index 000000000..1b30d4b17
--- /dev/null
+++ b/tests/ui/parser/issue-101477-let.stderr
@@ -0,0 +1,8 @@
+error: unexpected `==`
+  --> $DIR/issue-101477-let.rs:4:11
+   |
+LL |     let x == 2;
+   |           ^^ help: try using `=` instead
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issue-102806.rs b/tests/ui/parser/issue-102806.rs
new file mode 100644
index 000000000..ba297bdc9
--- /dev/null
+++ b/tests/ui/parser/issue-102806.rs
@@ -0,0 +1,25 @@
+#![allow(dead_code)]
+
+#[derive(Default)]
+struct V3 {
+    x: f32,
+    y: f32,
+    z: f32,
+}
+
+fn pz(v: V3) {
+    let _ = V3 { z: 0.0, ...v};
+    //~^ ERROR expected `..`
+
+    let _ = V3 { z: 0.0, ...Default::default() };
+    //~^ ERROR expected `..`
+
+    let _ = V3 { z: 0.0, ... };
+    //~^ expected identifier
+    //~| ERROR missing fields `x` and `y` in initializer of `V3`
+
+    let V3 { z: val, ... } = v;
+    //~^ ERROR expected field pattern
+}
+
+fn main() {}
diff --git a/tests/ui/parser/issue-102806.stderr b/tests/ui/parser/issue-102806.stderr
new file mode 100644
index 000000000..6872b8bc0
--- /dev/null
+++ b/tests/ui/parser/issue-102806.stderr
@@ -0,0 +1,45 @@
+error: expected `..`, found `...`
+  --> $DIR/issue-102806.rs:11:26
+   |
+LL |     let _ = V3 { z: 0.0, ...v};
+   |                          ^^^
+   |
+help: use `..` to fill in the rest of the fields
+   |
+LL |     let _ = V3 { z: 0.0, ..v};
+   |                          ~~
+
+error: expected `..`, found `...`
+  --> $DIR/issue-102806.rs:14:26
+   |
+LL |     let _ = V3 { z: 0.0, ...Default::default() };
+   |                          ^^^
+   |
+help: use `..` to fill in the rest of the fields
+   |
+LL |     let _ = V3 { z: 0.0, ..Default::default() };
+   |                          ~~
+
+error: expected identifier, found `...`
+  --> $DIR/issue-102806.rs:17:26
+   |
+LL |     let _ = V3 { z: 0.0, ... };
+   |             --           ^^^ expected identifier
+   |             |
+   |             while parsing this struct
+
+error: expected field pattern, found `...`
+  --> $DIR/issue-102806.rs:21:22
+   |
+LL |     let V3 { z: val, ... } = v;
+   |                      ^^^ help: to omit remaining fields, use one fewer `.`: `..`
+
+error[E0063]: missing fields `x` and `y` in initializer of `V3`
+  --> $DIR/issue-102806.rs:17:13
+   |
+LL |     let _ = V3 { z: 0.0, ... };
+   |             ^^ missing `x` and `y`
+
+error: aborting due to 5 previous errors
+
+For more information about this error, try `rustc --explain E0063`.
diff --git a/tests/ui/parser/issue-103143.rs b/tests/ui/parser/issue-103143.rs
new file mode 100644
index 000000000..a584274c4
--- /dev/null
+++ b/tests/ui/parser/issue-103143.rs
@@ -0,0 +1,5 @@
+fn main() {
+    x::<#[a]y::<z>>
+    //~^ ERROR invalid const generic expression
+    //~| ERROR cannot find value `x` in this scope
+}
diff --git a/tests/ui/parser/issue-103143.stderr b/tests/ui/parser/issue-103143.stderr
new file mode 100644
index 000000000..4035c69af
--- /dev/null
+++ b/tests/ui/parser/issue-103143.stderr
@@ -0,0 +1,20 @@
+error: invalid const generic expression
+  --> $DIR/issue-103143.rs:2:13
+   |
+LL |     x::<#[a]y::<z>>
+   |             ^^^^^^
+   |
+help: expressions must be enclosed in braces to be used as const generic arguments
+   |
+LL |     x::<#[a]{ y::<z> }>
+   |             +        +
+
+error[E0425]: cannot find value `x` in this scope
+  --> $DIR/issue-103143.rs:2:5
+   |
+LL |     x::<#[a]y::<z>>
+   |     ^ not found in this scope
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0425`.
diff --git a/tests/ui/parser/issue-103381.fixed b/tests/ui/parser/issue-103381.fixed
new file mode 100644
index 000000000..6a9fb9910
--- /dev/null
+++ b/tests/ui/parser/issue-103381.fixed
@@ -0,0 +1,59 @@
+// run-rustfix
+
+#![feature(let_chains)]
+#![allow(unused_variables)]
+#![allow(dead_code)]
+#![allow(irrefutable_let_patterns)]
+
+fn err_some(b: bool, x: Option<u32>) {
+    if b && let Some(x) = x {}
+    //~^ ERROR unexpected `if` in the condition expression
+}
+
+fn err_none(b: bool, x: Option<u32>) {
+    if b && let None = x {}
+    //~^ ERROR unexpected `if` in the condition expression
+}
+
+fn err_bool_1() {
+    if true && true { true } else { false };
+    //~^ ERROR unexpected `if` in the condition expression
+}
+
+fn err_bool_2() {
+    if true && false { true } else { false };
+    //~^ ERROR unexpected `if` in the condition expression
+}
+
+fn should_ok_1() {
+    if true && if let x = 1 { true } else { true } {}
+}
+
+fn should_ok_2() {
+    if true && if let 1 = 1 { true } else { true } {}
+}
+
+fn should_ok_3() {
+    if true && if true { true } else { false } {}
+}
+
+fn shoule_match_ok() {
+    #[cfg(feature = "full")]
+    {
+        let a = 1;
+        let b = 2;
+        if match a {
+            1 if b == 1 => true,
+            _ => false,
+        } && if a > 1 { true } else { false }
+        {
+            true
+        }
+    }
+}
+
+fn should_ok_in_nested() {
+    if true && if true { true } else { false } { true } else { false };
+}
+
+fn main() {}
diff --git a/tests/ui/parser/issue-103381.rs b/tests/ui/parser/issue-103381.rs
new file mode 100644
index 000000000..bf79e1010
--- /dev/null
+++ b/tests/ui/parser/issue-103381.rs
@@ -0,0 +1,59 @@
+// run-rustfix
+
+#![feature(let_chains)]
+#![allow(unused_variables)]
+#![allow(dead_code)]
+#![allow(irrefutable_let_patterns)]
+
+fn err_some(b: bool, x: Option<u32>) {
+    if b && if let Some(x) = x {}
+    //~^ ERROR unexpected `if` in the condition expression
+}
+
+fn err_none(b: bool, x: Option<u32>) {
+    if b && if let None = x {}
+    //~^ ERROR unexpected `if` in the condition expression
+}
+
+fn err_bool_1() {
+    if true && if true { true } else { false };
+    //~^ ERROR unexpected `if` in the condition expression
+}
+
+fn err_bool_2() {
+    if true && if false { true } else { false };
+    //~^ ERROR unexpected `if` in the condition expression
+}
+
+fn should_ok_1() {
+    if true && if let x = 1 { true } else { true } {}
+}
+
+fn should_ok_2() {
+    if true && if let 1 = 1 { true } else { true } {}
+}
+
+fn should_ok_3() {
+    if true && if true { true } else { false } {}
+}
+
+fn shoule_match_ok() {
+    #[cfg(feature = "full")]
+    {
+        let a = 1;
+        let b = 2;
+        if match a {
+            1 if b == 1 => true,
+            _ => false,
+        } && if a > 1 { true } else { false }
+        {
+            true
+        }
+    }
+}
+
+fn should_ok_in_nested() {
+    if true && if true { true } else { false } { true } else { false };
+}
+
+fn main() {}
diff --git a/tests/ui/parser/issue-103381.stderr b/tests/ui/parser/issue-103381.stderr
new file mode 100644
index 000000000..85fcc18e7
--- /dev/null
+++ b/tests/ui/parser/issue-103381.stderr
@@ -0,0 +1,50 @@
+error: unexpected `if` in the condition expression
+  --> $DIR/issue-103381.rs:9:12
+   |
+LL |     if b && if let Some(x) = x {}
+   |            ^^^^
+   |
+help: remove the `if`
+   |
+LL -     if b && if let Some(x) = x {}
+LL +     if b && let Some(x) = x {}
+   |
+
+error: unexpected `if` in the condition expression
+  --> $DIR/issue-103381.rs:14:12
+   |
+LL |     if b && if let None = x {}
+   |            ^^^^
+   |
+help: remove the `if`
+   |
+LL -     if b && if let None = x {}
+LL +     if b && let None = x {}
+   |
+
+error: unexpected `if` in the condition expression
+  --> $DIR/issue-103381.rs:19:15
+   |
+LL |     if true && if true { true } else { false };
+   |               ^^^^
+   |
+help: remove the `if`
+   |
+LL -     if true && if true { true } else { false };
+LL +     if true && true { true } else { false };
+   |
+
+error: unexpected `if` in the condition expression
+  --> $DIR/issue-103381.rs:24:15
+   |
+LL |     if true && if false { true } else { false };
+   |               ^^^^
+   |
+help: remove the `if`
+   |
+LL -     if true && if false { true } else { false };
+LL +     if true && false { true } else { false };
+   |
+
+error: aborting due to 4 previous errors
+
diff --git a/tests/ui/parser/issue-103425.rs b/tests/ui/parser/issue-103425.rs
new file mode 100644
index 000000000..c2f8123ca
--- /dev/null
+++ b/tests/ui/parser/issue-103425.rs
@@ -0,0 +1,15 @@
+fn f() -> f32 {
+    3
+    //~^ ERROR expected `;`
+    5.0
+}
+
+fn k() -> f32 {
+    2_u32
+    //~^ ERROR expected `;`
+    3_i8
+    //~^ ERROR expected `;`
+    5.0
+}
+
+fn main() {}
diff --git a/tests/ui/parser/issue-103425.stderr b/tests/ui/parser/issue-103425.stderr
new file mode 100644
index 000000000..0efe3e3ca
--- /dev/null
+++ b/tests/ui/parser/issue-103425.stderr
@@ -0,0 +1,29 @@
+error: expected `;`, found `5.0`
+  --> $DIR/issue-103425.rs:2:6
+   |
+LL |     3
+   |      ^ help: add `;` here
+LL |
+LL |     5.0
+   |     --- unexpected token
+
+error: expected `;`, found `3_i8`
+  --> $DIR/issue-103425.rs:8:10
+   |
+LL |     2_u32
+   |          ^ help: add `;` here
+LL |
+LL |     3_i8
+   |     ---- unexpected token
+
+error: expected `;`, found `5.0`
+  --> $DIR/issue-103425.rs:10:9
+   |
+LL |     3_i8
+   |         ^ help: add `;` here
+LL |
+LL |     5.0
+   |     --- unexpected token
+
+error: aborting due to 3 previous errors
+
diff --git a/tests/ui/parser/issue-103451.rs b/tests/ui/parser/issue-103451.rs
new file mode 100644
index 000000000..1fdb00148
--- /dev/null
+++ b/tests/ui/parser/issue-103451.rs
@@ -0,0 +1,5 @@
+// error-pattern: this file contains an unclosed delimiter
+// error-pattern: expected value, found struct `R`
+struct R { }
+struct S {
+    x: [u8; R
diff --git a/tests/ui/parser/issue-103451.stderr b/tests/ui/parser/issue-103451.stderr
new file mode 100644
index 000000000..eb3c92fb4
--- /dev/null
+++ b/tests/ui/parser/issue-103451.stderr
@@ -0,0 +1,32 @@
+error: this file contains an unclosed delimiter
+  --> $DIR/issue-103451.rs:5:15
+   |
+LL | struct S {
+   |          - unclosed delimiter
+LL |     x: [u8; R
+   |        -      ^
+   |        |
+   |        unclosed delimiter
+
+error: this file contains an unclosed delimiter
+  --> $DIR/issue-103451.rs:5:15
+   |
+LL | struct S {
+   |          - unclosed delimiter
+LL |     x: [u8; R
+   |        -      ^
+   |        |
+   |        unclosed delimiter
+
+error[E0423]: expected value, found struct `R`
+  --> $DIR/issue-103451.rs:5:13
+   |
+LL | struct R { }
+   | ------------ `R` defined here
+LL | struct S {
+LL |     x: [u8; R
+   |             ^ help: use struct literal syntax instead: `R {}`
+
+error: aborting due to 3 previous errors
+
+For more information about this error, try `rustc --explain E0423`.
diff --git a/tests/ui/parser/issue-103748-ICE-wrong-braces.rs b/tests/ui/parser/issue-103748-ICE-wrong-braces.rs
new file mode 100644
index 000000000..8012cb652
--- /dev/null
+++ b/tests/ui/parser/issue-103748-ICE-wrong-braces.rs
@@ -0,0 +1,8 @@
+#![crate_type = "lib"]
+
+struct Apple((Apple, Option(Banana ? Citron)));
+//~^ ERROR invalid `?` in type
+//~| ERROR expected one of `)` or `,`, found `Citron`
+//~| ERROR cannot find type `Citron` in this scope [E0412]
+//~| ERROR parenthesized type parameters may only be used with a `Fn` trait [E0214]
+//~| ERROR recursive type `Apple` has infinite size [E0072]
diff --git a/tests/ui/parser/issue-103748-ICE-wrong-braces.stderr b/tests/ui/parser/issue-103748-ICE-wrong-braces.stderr
new file mode 100644
index 000000000..b0d8b03ae
--- /dev/null
+++ b/tests/ui/parser/issue-103748-ICE-wrong-braces.stderr
@@ -0,0 +1,51 @@
+error: invalid `?` in type
+  --> $DIR/issue-103748-ICE-wrong-braces.rs:3:36
+   |
+LL | struct Apple((Apple, Option(Banana ? Citron)));
+   |                                    ^ `?` is only allowed on expressions, not types
+   |
+help: if you meant to express that the type might not contain a value, use the `Option` wrapper type
+   |
+LL | struct Apple((Apple, Option(Option<Banana > Citron)));
+   |                             +++++++       ~
+
+error: expected one of `)` or `,`, found `Citron`
+  --> $DIR/issue-103748-ICE-wrong-braces.rs:3:38
+   |
+LL | struct Apple((Apple, Option(Banana ? Citron)));
+   |                                     -^^^^^^ expected one of `)` or `,`
+   |                                     |
+   |                                     help: missing `,`
+
+error[E0412]: cannot find type `Citron` in this scope
+  --> $DIR/issue-103748-ICE-wrong-braces.rs:3:38
+   |
+LL | struct Apple((Apple, Option(Banana ? Citron)));
+   |                                      ^^^^^^ not found in this scope
+
+error[E0214]: parenthesized type parameters may only be used with a `Fn` trait
+  --> $DIR/issue-103748-ICE-wrong-braces.rs:3:22
+   |
+LL | struct Apple((Apple, Option(Banana ? Citron)));
+   |                      ^^^^^^^^^^^^^^^^^^^^^^^ only `Fn` traits may use parentheses
+   |
+help: use angle brackets instead
+   |
+LL | struct Apple((Apple, Option<Banana ? Citron>));
+   |                            ~               ~
+
+error[E0072]: recursive type `Apple` has infinite size
+  --> $DIR/issue-103748-ICE-wrong-braces.rs:3:1
+   |
+LL | struct Apple((Apple, Option(Banana ? Citron)));
+   | ^^^^^^^^^^^^  ----- recursive without indirection
+   |
+help: insert some indirection (e.g., a `Box`, `Rc`, or `&`) to break the cycle
+   |
+LL | struct Apple((Box<Apple>, Option(Banana ? Citron)));
+   |               ++++     +
+
+error: aborting due to 5 previous errors
+
+Some errors have detailed explanations: E0072, E0214, E0412.
+For more information about an error, try `rustc --explain E0072`.
diff --git a/tests/ui/parser/issue-103869.rs b/tests/ui/parser/issue-103869.rs
new file mode 100644
index 000000000..28c442bdd
--- /dev/null
+++ b/tests/ui/parser/issue-103869.rs
@@ -0,0 +1,9 @@
+enum VecOrMap{
+    vec: Vec<usize>,
+    //~^ ERROR expected one of `(`, `,`, `=`, `{`, or `}`, found `:`
+    //~| HELP: enum variants can be `Variant`, `Variant = <integer>`, `Variant(Type, ..., TypeN)` or `Variant { fields: Types }`
+    //~| ERROR expected item, found `:`
+    map: HashMap<String,usize>
+}
+
+fn main() {}
diff --git a/tests/ui/parser/issue-103869.stderr b/tests/ui/parser/issue-103869.stderr
new file mode 100644
index 000000000..0b8cd919a
--- /dev/null
+++ b/tests/ui/parser/issue-103869.stderr
@@ -0,0 +1,16 @@
+error: expected one of `(`, `,`, `=`, `{`, or `}`, found `:`
+  --> $DIR/issue-103869.rs:2:8
+   |
+LL |     vec: Vec<usize>,
+   |        ^ expected one of `(`, `,`, `=`, `{`, or `}`
+   |
+   = help: enum variants can be `Variant`, `Variant = <integer>`, `Variant(Type, ..., TypeN)` or `Variant { fields: Types }`
+
+error: expected item, found `:`
+  --> $DIR/issue-103869.rs:2:8
+   |
+LL |     vec: Vec<usize>,
+   |        ^ expected item
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/issue-104620.rs b/tests/ui/parser/issue-104620.rs
new file mode 100644
index 000000000..f49476c44
--- /dev/null
+++ b/tests/ui/parser/issue-104620.rs
@@ -0,0 +1,4 @@
+#![feature(rustc_attrs)]
+
+#![rustc_dummy=5z] //~ ERROR unexpected expression: `5z`
+fn main() {}
diff --git a/tests/ui/parser/issue-104620.stderr b/tests/ui/parser/issue-104620.stderr
new file mode 100644
index 000000000..d06a6b255
--- /dev/null
+++ b/tests/ui/parser/issue-104620.stderr
@@ -0,0 +1,8 @@
+error: unexpected expression: `5z`
+  --> $DIR/issue-104620.rs:3:16
+   |
+LL | #![rustc_dummy=5z]
+   |                ^^
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issue-104867-inc-dec-2.rs b/tests/ui/parser/issue-104867-inc-dec-2.rs
new file mode 100644
index 000000000..a006421a9
--- /dev/null
+++ b/tests/ui/parser/issue-104867-inc-dec-2.rs
@@ -0,0 +1,52 @@
+fn test1() {
+    let mut i = 0;
+    let _ = i + ++i; //~ ERROR Rust has no prefix increment operator
+}
+
+fn test2() {
+    let mut i = 0;
+    let _ = ++i + i; //~ ERROR Rust has no prefix increment operator
+}
+
+fn test3() {
+    let mut i = 0;
+    let _ = ++i + ++i; //~ ERROR Rust has no prefix increment operator
+}
+
+fn test4() {
+    let mut i = 0;
+    let _ = i + i++; //~ ERROR Rust has no postfix increment operator
+    // won't suggest since we can not handle the precedences
+}
+
+fn test5() {
+    let mut i = 0;
+    let _ = i++ + i; //~ ERROR Rust has no postfix increment operator
+}
+
+fn test6() {
+    let mut i = 0;
+    let _ = i++ + i++; //~ ERROR Rust has no postfix increment operator
+}
+
+fn test7() {
+    let mut i = 0;
+    let _ = ++i + i++; //~ ERROR Rust has no prefix increment operator
+}
+
+fn test8() {
+    let mut i = 0;
+    let _ = i++ + ++i; //~ ERROR Rust has no postfix increment operator
+}
+
+fn test9() {
+    let mut i = 0;
+    let _ = (1 + 2 + i)++; //~ ERROR Rust has no postfix increment operator
+}
+
+fn test10() {
+    let mut i = 0;
+    let _ = (i++ + 1) + 2; //~ ERROR Rust has no postfix increment operator
+}
+
+fn main() { }
diff --git a/tests/ui/parser/issue-104867-inc-dec-2.stderr b/tests/ui/parser/issue-104867-inc-dec-2.stderr
new file mode 100644
index 000000000..4e2d05468
--- /dev/null
+++ b/tests/ui/parser/issue-104867-inc-dec-2.stderr
@@ -0,0 +1,107 @@
+error: Rust has no prefix increment operator
+  --> $DIR/issue-104867-inc-dec-2.rs:3:17
+   |
+LL |     let _ = i + ++i;
+   |                 ^^ not a valid prefix operator
+   |
+help: use `+= 1` instead
+   |
+LL |     let _ = i + { i += 1; i };
+   |                 ~   +++++++++
+
+error: Rust has no prefix increment operator
+  --> $DIR/issue-104867-inc-dec-2.rs:8:13
+   |
+LL |     let _ = ++i + i;
+   |             ^^ not a valid prefix operator
+   |
+help: use `+= 1` instead
+   |
+LL |     let _ = { i += 1; i } + i;
+   |             ~   +++++++++
+
+error: Rust has no prefix increment operator
+  --> $DIR/issue-104867-inc-dec-2.rs:13:13
+   |
+LL |     let _ = ++i + ++i;
+   |             ^^ not a valid prefix operator
+   |
+help: use `+= 1` instead
+   |
+LL |     let _ = { i += 1; i } + ++i;
+   |             ~   +++++++++
+
+error: Rust has no postfix increment operator
+  --> $DIR/issue-104867-inc-dec-2.rs:18:18
+   |
+LL |     let _ = i + i++;
+   |                  ^^ not a valid postfix operator
+
+error: Rust has no postfix increment operator
+  --> $DIR/issue-104867-inc-dec-2.rs:24:14
+   |
+LL |     let _ = i++ + i;
+   |              ^^ not a valid postfix operator
+   |
+help: use `+= 1` instead
+   |
+LL |     let _ = { let tmp = i; i += 1; tmp } + i;
+   |             +++++++++++  ~~~~~~~~~~~~~~~
+
+error: Rust has no postfix increment operator
+  --> $DIR/issue-104867-inc-dec-2.rs:29:14
+   |
+LL |     let _ = i++ + i++;
+   |              ^^ not a valid postfix operator
+   |
+help: use `+= 1` instead
+   |
+LL |     let _ = { let tmp = i; i += 1; tmp } + i++;
+   |             +++++++++++  ~~~~~~~~~~~~~~~
+
+error: Rust has no prefix increment operator
+  --> $DIR/issue-104867-inc-dec-2.rs:34:13
+   |
+LL |     let _ = ++i + i++;
+   |             ^^ not a valid prefix operator
+   |
+help: use `+= 1` instead
+   |
+LL |     let _ = { i += 1; i } + i++;
+   |             ~   +++++++++
+
+error: Rust has no postfix increment operator
+  --> $DIR/issue-104867-inc-dec-2.rs:39:14
+   |
+LL |     let _ = i++ + ++i;
+   |              ^^ not a valid postfix operator
+   |
+help: use `+= 1` instead
+   |
+LL |     let _ = { let tmp = i; i += 1; tmp } + ++i;
+   |             +++++++++++  ~~~~~~~~~~~~~~~
+
+error: Rust has no postfix increment operator
+  --> $DIR/issue-104867-inc-dec-2.rs:44:24
+   |
+LL |     let _ = (1 + 2 + i)++;
+   |                        ^^ not a valid postfix operator
+   |
+help: use `+= 1` instead
+   |
+LL |     let _ = { let tmp = (1 + 2 + i); (1 + 2 + i) += 1; tmp };
+   |             +++++++++++            ~~~~~~~~~~~~~~~~~~~~~~~~~
+
+error: Rust has no postfix increment operator
+  --> $DIR/issue-104867-inc-dec-2.rs:49:15
+   |
+LL |     let _ = (i++ + 1) + 2;
+   |               ^^ not a valid postfix operator
+   |
+help: use `+= 1` instead
+   |
+LL |     let _ = ({ let tmp = i; i += 1; tmp } + 1) + 2;
+   |              +++++++++++  ~~~~~~~~~~~~~~~
+
+error: aborting due to 10 previous errors
+
diff --git a/tests/ui/parser/issue-104867-inc-dec.rs b/tests/ui/parser/issue-104867-inc-dec.rs
new file mode 100644
index 000000000..760c67b4b
--- /dev/null
+++ b/tests/ui/parser/issue-104867-inc-dec.rs
@@ -0,0 +1,45 @@
+struct S {
+    x: i32,
+}
+
+fn test1() {
+    let mut i = 0;
+    i++; //~ ERROR Rust has no postfix increment operator
+}
+
+fn test2() {
+    let s = S { x: 0 };
+    s.x++; //~ ERROR Rust has no postfix increment operator
+}
+
+fn test3() {
+    let mut i = 0;
+    if i++ == 1 {} //~ ERROR Rust has no postfix increment operator
+}
+
+fn test4() {
+    let mut i = 0;
+    ++i; //~ ERROR Rust has no prefix increment operator
+}
+
+fn test5() {
+    let mut i = 0;
+    if ++i == 1 { } //~ ERROR Rust has no prefix increment operator
+}
+
+fn test6() {
+    let mut i = 0;
+    loop { break; }
+    i++; //~ ERROR Rust has no postfix increment operator
+    loop { break; }
+    ++i;
+}
+
+fn test7() {
+    let mut i = 0;
+    loop { break; }
+    ++i; //~ ERROR Rust has no prefix increment operator
+}
+
+
+fn main() {}
diff --git a/tests/ui/parser/issue-104867-inc-dec.stderr b/tests/ui/parser/issue-104867-inc-dec.stderr
new file mode 100644
index 000000000..78bfd3e82
--- /dev/null
+++ b/tests/ui/parser/issue-104867-inc-dec.stderr
@@ -0,0 +1,81 @@
+error: Rust has no postfix increment operator
+  --> $DIR/issue-104867-inc-dec.rs:7:6
+   |
+LL |     i++;
+   |      ^^ not a valid postfix operator
+   |
+help: use `+= 1` instead
+   |
+LL |     i += 1;
+   |       ~~~~
+
+error: Rust has no postfix increment operator
+  --> $DIR/issue-104867-inc-dec.rs:12:8
+   |
+LL |     s.x++;
+   |        ^^ not a valid postfix operator
+   |
+help: use `+= 1` instead
+   |
+LL |     s.x += 1;
+   |         ~~~~
+
+error: Rust has no postfix increment operator
+  --> $DIR/issue-104867-inc-dec.rs:17:9
+   |
+LL |     if i++ == 1 {}
+   |         ^^ not a valid postfix operator
+   |
+help: use `+= 1` instead
+   |
+LL |     if { let tmp = i; i += 1; tmp } == 1 {}
+   |        +++++++++++  ~~~~~~~~~~~~~~~
+
+error: Rust has no prefix increment operator
+  --> $DIR/issue-104867-inc-dec.rs:22:5
+   |
+LL |     ++i;
+   |     ^^ not a valid prefix operator
+   |
+help: use `+= 1` instead
+   |
+LL -     ++i;
+LL +     i += 1;
+   |
+
+error: Rust has no prefix increment operator
+  --> $DIR/issue-104867-inc-dec.rs:27:8
+   |
+LL |     if ++i == 1 { }
+   |        ^^ not a valid prefix operator
+   |
+help: use `+= 1` instead
+   |
+LL |     if { i += 1; i } == 1 { }
+   |        ~   +++++++++
+
+error: Rust has no postfix increment operator
+  --> $DIR/issue-104867-inc-dec.rs:33:6
+   |
+LL |     i++;
+   |      ^^ not a valid postfix operator
+   |
+help: use `+= 1` instead
+   |
+LL |     i += 1;
+   |       ~~~~
+
+error: Rust has no prefix increment operator
+  --> $DIR/issue-104867-inc-dec.rs:41:5
+   |
+LL |     ++i;
+   |     ^^ not a valid prefix operator
+   |
+help: use `+= 1` instead
+   |
+LL -     ++i;
+LL +     i += 1;
+   |
+
+error: aborting due to 7 previous errors
+
diff --git a/tests/ui/parser/issue-105366.fixed b/tests/ui/parser/issue-105366.fixed
new file mode 100644
index 000000000..ad26643c3
--- /dev/null
+++ b/tests/ui/parser/issue-105366.fixed
@@ -0,0 +1,12 @@
+// run-rustfix
+
+struct Foo;
+
+impl From<i32> for Foo {
+    //~^ ERROR you might have meant to write `impl` instead of `fn`
+    fn from(_a: i32) -> Self {
+        Foo
+    }
+}
+
+fn main() {}
diff --git a/tests/ui/parser/issue-105366.rs b/tests/ui/parser/issue-105366.rs
new file mode 100644
index 000000000..311b6a60f
--- /dev/null
+++ b/tests/ui/parser/issue-105366.rs
@@ -0,0 +1,12 @@
+// run-rustfix
+
+struct Foo;
+
+fn From<i32> for Foo {
+    //~^ ERROR you might have meant to write `impl` instead of `fn`
+    fn from(_a: i32) -> Self {
+        Foo
+    }
+}
+
+fn main() {}
diff --git a/tests/ui/parser/issue-105366.stderr b/tests/ui/parser/issue-105366.stderr
new file mode 100644
index 000000000..0a7408e2c
--- /dev/null
+++ b/tests/ui/parser/issue-105366.stderr
@@ -0,0 +1,13 @@
+error: you might have meant to write `impl` instead of `fn`
+  --> $DIR/issue-105366.rs:5:1
+   |
+LL | fn From<i32> for Foo {
+   | ^^
+   |
+help: replace `fn` with `impl` here
+   |
+LL | impl From<i32> for Foo {
+   | ~~~~
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issue-105634.rs b/tests/ui/parser/issue-105634.rs
new file mode 100644
index 000000000..579aa6e5b
--- /dev/null
+++ b/tests/ui/parser/issue-105634.rs
@@ -0,0 +1,8 @@
+// check-pass
+
+fn main() {
+    let _a = ..;
+    let _b = ..=10;
+    let _c = &..;
+    let _d = &..=10;
+}
diff --git a/tests/ui/parser/issue-17718-parse-const.rs b/tests/ui/parser/issue-17718-parse-const.rs
new file mode 100644
index 000000000..d5a5f445d
--- /dev/null
+++ b/tests/ui/parser/issue-17718-parse-const.rs
@@ -0,0 +1,7 @@
+// run-pass
+
+const FOO: usize = 3;
+
+fn main() {
+    assert_eq!(FOO, 3);
+}
diff --git a/tests/ui/parser/issue-39616.rs b/tests/ui/parser/issue-39616.rs
new file mode 100644
index 000000000..46b5aa334
--- /dev/null
+++ b/tests/ui/parser/issue-39616.rs
@@ -0,0 +1,3 @@
+fn foo(a: [0; 1]) {} //~ ERROR expected type, found `0`
+
+fn main() {}
diff --git a/tests/ui/parser/issue-39616.stderr b/tests/ui/parser/issue-39616.stderr
new file mode 100644
index 000000000..393d1f2e2
--- /dev/null
+++ b/tests/ui/parser/issue-39616.stderr
@@ -0,0 +1,8 @@
+error: expected type, found `0`
+  --> $DIR/issue-39616.rs:1:12
+   |
+LL | fn foo(a: [0; 1]) {}
+   |            ^ expected type
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issue-49257.rs b/tests/ui/parser/issue-49257.rs
new file mode 100644
index 000000000..a7fa19d52
--- /dev/null
+++ b/tests/ui/parser/issue-49257.rs
@@ -0,0 +1,14 @@
+// Test for #49257:
+// emits good diagnostics for `..` pattern fragments not in the last position.
+
+#![allow(unused)]
+
+struct Point { x: u8, y: u8 }
+
+fn main() {
+    let p = Point { x: 0, y: 0 };
+    let Point { .., y, } = p; //~ ERROR expected `}`, found `,`
+    let Point { .., y } = p; //~ ERROR expected `}`, found `,`
+    let Point { .., } = p; //~ ERROR expected `}`, found `,`
+    let Point { .. } = p;
+}
diff --git a/tests/ui/parser/issue-49257.stderr b/tests/ui/parser/issue-49257.stderr
new file mode 100644
index 000000000..846467f7f
--- /dev/null
+++ b/tests/ui/parser/issue-49257.stderr
@@ -0,0 +1,42 @@
+error: expected `}`, found `,`
+  --> $DIR/issue-49257.rs:10:19
+   |
+LL |     let Point { .., y, } = p;
+   |                 --^
+   |                 | |
+   |                 | expected `}`
+   |                 `..` must be at the end and cannot have a trailing comma
+   |
+help: move the `..` to the end of the field list
+   |
+LL -     let Point { .., y, } = p;
+LL +     let Point { y, .. } = p;
+   |
+
+error: expected `}`, found `,`
+  --> $DIR/issue-49257.rs:11:19
+   |
+LL |     let Point { .., y } = p;
+   |                 --^
+   |                 | |
+   |                 | expected `}`
+   |                 `..` must be at the end and cannot have a trailing comma
+   |
+help: move the `..` to the end of the field list
+   |
+LL -     let Point { .., y } = p;
+LL +     let Point { y , .. } = p;
+   |
+
+error: expected `}`, found `,`
+  --> $DIR/issue-49257.rs:12:19
+   |
+LL |     let Point { .., } = p;
+   |                 --^
+   |                 | |
+   |                 | expected `}`
+   |                 | help: remove this comma
+   |                 `..` must be at the end and cannot have a trailing comma
+
+error: aborting due to 3 previous errors
+
diff --git a/tests/ui/parser/issue-61858.rs b/tests/ui/parser/issue-61858.rs
new file mode 100644
index 000000000..6c3b56586
--- /dev/null
+++ b/tests/ui/parser/issue-61858.rs
@@ -0,0 +1,3 @@
+fn main() {
+    (if foobar) //~ ERROR expected `{`, found `)`
+}
diff --git a/tests/ui/parser/issue-61858.stderr b/tests/ui/parser/issue-61858.stderr
new file mode 100644
index 000000000..03f51c6e3
--- /dev/null
+++ b/tests/ui/parser/issue-61858.stderr
@@ -0,0 +1,14 @@
+error: expected `{`, found `)`
+  --> $DIR/issue-61858.rs:2:15
+   |
+LL |     (if foobar)
+   |               ^ expected `{`
+   |
+note: the `if` expression is missing a block after this condition
+  --> $DIR/issue-61858.rs:2:9
+   |
+LL |     (if foobar)
+   |         ^^^^^^
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issue-68091-unicode-ident-after-if.rs b/tests/ui/parser/issue-68091-unicode-ident-after-if.rs
new file mode 100644
index 000000000..57d36feb3
--- /dev/null
+++ b/tests/ui/parser/issue-68091-unicode-ident-after-if.rs
@@ -0,0 +1,10 @@
+macro_rules! x {
+    ($($c:tt)*) => {
+        $($c)ö* {}
+        //~^ ERROR missing condition for `if` expression
+    };
+}
+
+fn main() {
+    x!(if);
+}
diff --git a/tests/ui/parser/issue-68091-unicode-ident-after-if.stderr b/tests/ui/parser/issue-68091-unicode-ident-after-if.stderr
new file mode 100644
index 000000000..6674b924e
--- /dev/null
+++ b/tests/ui/parser/issue-68091-unicode-ident-after-if.stderr
@@ -0,0 +1,10 @@
+error: missing condition for `if` expression
+  --> $DIR/issue-68091-unicode-ident-after-if.rs:3:14
+   |
+LL |         $($c)ö* {}
+   |              ^  - if this block is the condition of the `if` expression, then it must be followed by another block
+   |              |
+   |              expected condition here
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issue-68092-unicode-ident-after-incomplete-expr.rs b/tests/ui/parser/issue-68092-unicode-ident-after-incomplete-expr.rs
new file mode 100644
index 000000000..1a90b4724
--- /dev/null
+++ b/tests/ui/parser/issue-68092-unicode-ident-after-incomplete-expr.rs
@@ -0,0 +1,9 @@
+macro_rules! x {
+    ($($c:tt)*) => {
+        $($c)ö* //~ ERROR macro expansion ends with an incomplete expression: expected expression
+    };
+}
+
+fn main() {
+    x!(!);
+}
diff --git a/tests/ui/parser/issue-68092-unicode-ident-after-incomplete-expr.stderr b/tests/ui/parser/issue-68092-unicode-ident-after-incomplete-expr.stderr
new file mode 100644
index 000000000..0b9c364f1
--- /dev/null
+++ b/tests/ui/parser/issue-68092-unicode-ident-after-incomplete-expr.stderr
@@ -0,0 +1,8 @@
+error: macro expansion ends with an incomplete expression: expected expression
+  --> $DIR/issue-68092-unicode-ident-after-incomplete-expr.rs:3:14
+   |
+LL |         $($c)ö*
+   |              ^ expected expression
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issue-81804.rs b/tests/ui/parser/issue-81804.rs
new file mode 100644
index 000000000..803bde11e
--- /dev/null
+++ b/tests/ui/parser/issue-81804.rs
@@ -0,0 +1,9 @@
+// error-pattern: this file contains an unclosed delimiter
+// error-pattern: this file contains an unclosed delimiter
+// error-pattern: expected pattern, found `=`
+// error-pattern: expected one of `)`, `,`, `->`, `where`, or `{`, found `]`
+// error-pattern: expected item, found `]`
+
+fn main() {}
+
+fn p([=(}
diff --git a/tests/ui/parser/issue-81804.stderr b/tests/ui/parser/issue-81804.stderr
new file mode 100644
index 000000000..19c4422c6
--- /dev/null
+++ b/tests/ui/parser/issue-81804.stderr
@@ -0,0 +1,41 @@
+error: this file contains an unclosed delimiter
+  --> $DIR/issue-81804.rs:9:11
+   |
+LL | fn p([=(}
+   |     --    ^
+   |     ||
+   |     |unclosed delimiter
+   |     unclosed delimiter
+
+error: this file contains an unclosed delimiter
+  --> $DIR/issue-81804.rs:9:11
+   |
+LL | fn p([=(}
+   |     --    ^
+   |     ||
+   |     |unclosed delimiter
+   |     unclosed delimiter
+
+error: expected pattern, found `=`
+  --> $DIR/issue-81804.rs:9:7
+   |
+LL | fn p([=(}
+   |       ^ expected pattern
+
+error: expected one of `)`, `,`, `->`, `where`, or `{`, found `]`
+  --> $DIR/issue-81804.rs:9:8
+   |
+LL | fn p([=(}
+   |        ^ -^
+   |        | |
+   |        | help: `)` may belong here
+   |        unclosed delimiter
+
+error: expected item, found `]`
+  --> $DIR/issue-81804.rs:9:11
+   |
+LL | fn p([=(}
+   |           ^ expected item
+
+error: aborting due to 5 previous errors
+
diff --git a/tests/ui/parser/issue-81827.rs b/tests/ui/parser/issue-81827.rs
new file mode 100644
index 000000000..7ec581594
--- /dev/null
+++ b/tests/ui/parser/issue-81827.rs
@@ -0,0 +1,11 @@
+// error-pattern: this file contains an unclosed delimiter
+// error-pattern: mismatched closing delimiter: `]`
+// error-pattern: expected one of `)` or `,`, found `{`
+
+#![crate_name="0"]
+
+
+
+fn main() {}
+
+fn r()->i{0|{#[cfg(r(0{]0
diff --git a/tests/ui/parser/issue-81827.stderr b/tests/ui/parser/issue-81827.stderr
new file mode 100644
index 000000000..069de3391
--- /dev/null
+++ b/tests/ui/parser/issue-81827.stderr
@@ -0,0 +1,35 @@
+error: this file contains an unclosed delimiter
+  --> $DIR/issue-81827.rs:11:27
+   |
+LL | fn r()->i{0|{#[cfg(r(0{]0
+   |          -  -             ^
+   |          |  |
+   |          |  unclosed delimiter
+   |          unclosed delimiter
+
+error: this file contains an unclosed delimiter
+  --> $DIR/issue-81827.rs:11:27
+   |
+LL | fn r()->i{0|{#[cfg(r(0{]0
+   |          -  -             ^
+   |          |  |
+   |          |  unclosed delimiter
+   |          unclosed delimiter
+
+error: mismatched closing delimiter: `]`
+  --> $DIR/issue-81827.rs:11:23
+   |
+LL | fn r()->i{0|{#[cfg(r(0{]0
+   |               -       ^^ mismatched closing delimiter
+   |               |       |
+   |               |       unclosed delimiter
+   |               closing delimiter possibly meant for this
+
+error: expected one of `)` or `,`, found `{`
+  --> $DIR/issue-81827.rs:11:23
+   |
+LL | fn r()->i{0|{#[cfg(r(0{]0
+   |                       ^ expected one of `)` or `,`
+
+error: aborting due to 4 previous errors
+
diff --git a/tests/ui/parser/issue-87694-duplicated-pub.rs b/tests/ui/parser/issue-87694-duplicated-pub.rs
new file mode 100644
index 000000000..e3ea61dc4
--- /dev/null
+++ b/tests/ui/parser/issue-87694-duplicated-pub.rs
@@ -0,0 +1,5 @@
+pub const pub fn test() {}
+//~^ ERROR expected one of `async`, `extern`, `fn`, or `unsafe`, found keyword `pub`
+//~| NOTE expected one of `async`, `extern`, `fn`, or `unsafe`
+//~| HELP there is already a visibility modifier, remove one
+//~| NOTE explicit visibility first seen here
diff --git a/tests/ui/parser/issue-87694-duplicated-pub.stderr b/tests/ui/parser/issue-87694-duplicated-pub.stderr
new file mode 100644
index 000000000..8d242bc9d
--- /dev/null
+++ b/tests/ui/parser/issue-87694-duplicated-pub.stderr
@@ -0,0 +1,17 @@
+error: expected one of `async`, `extern`, `fn`, or `unsafe`, found keyword `pub`
+  --> $DIR/issue-87694-duplicated-pub.rs:1:11
+   |
+LL | pub const pub fn test() {}
+   |           ^^^
+   |           |
+   |           expected one of `async`, `extern`, `fn`, or `unsafe`
+   |           help: there is already a visibility modifier, remove one
+   |
+note: explicit visibility first seen here
+  --> $DIR/issue-87694-duplicated-pub.rs:1:1
+   |
+LL | pub const pub fn test() {}
+   | ^^^
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issue-87694-misplaced-pub.rs b/tests/ui/parser/issue-87694-misplaced-pub.rs
new file mode 100644
index 000000000..3f824617c
--- /dev/null
+++ b/tests/ui/parser/issue-87694-misplaced-pub.rs
@@ -0,0 +1,5 @@
+const pub fn test() {}
+//~^ ERROR expected one of `async`, `extern`, `fn`, or `unsafe`, found keyword `pub`
+//~| NOTE expected one of `async`, `extern`, `fn`, or `unsafe`
+//~| HELP visibility `pub` must come before `const`
+//~| SUGGESTION pub const
diff --git a/tests/ui/parser/issue-87694-misplaced-pub.stderr b/tests/ui/parser/issue-87694-misplaced-pub.stderr
new file mode 100644
index 000000000..94c6a29ef
--- /dev/null
+++ b/tests/ui/parser/issue-87694-misplaced-pub.stderr
@@ -0,0 +1,11 @@
+error: expected one of `async`, `extern`, `fn`, or `unsafe`, found keyword `pub`
+  --> $DIR/issue-87694-misplaced-pub.rs:1:7
+   |
+LL | const pub fn test() {}
+   | ------^^^
+   | |     |
+   | |     expected one of `async`, `extern`, `fn`, or `unsafe`
+   | help: visibility `pub` must come before `const`: `pub const`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issue-90728.rs b/tests/ui/parser/issue-90728.rs
new file mode 100644
index 000000000..d6a898361
--- /dev/null
+++ b/tests/ui/parser/issue-90728.rs
@@ -0,0 +1,6 @@
+fn main() {
+    a.5.2E+
+    //~^ ERROR: unexpected token: `5.2E+`
+    //~| ERROR: expected one of `.`, `;`, `?`, `}`, or an operator, found `5.2E+`
+    //~| ERROR: expected at least one digit in exponent
+}
diff --git a/tests/ui/parser/issue-90728.stderr b/tests/ui/parser/issue-90728.stderr
new file mode 100644
index 000000000..b55c46030
--- /dev/null
+++ b/tests/ui/parser/issue-90728.stderr
@@ -0,0 +1,20 @@
+error: expected at least one digit in exponent
+  --> $DIR/issue-90728.rs:2:7
+   |
+LL |     a.5.2E+
+   |       ^^^^^
+
+error: unexpected token: `5.2E+`
+  --> $DIR/issue-90728.rs:2:7
+   |
+LL |     a.5.2E+
+   |       ^^^^^
+
+error: expected one of `.`, `;`, `?`, `}`, or an operator, found `5.2E+`
+  --> $DIR/issue-90728.rs:2:7
+   |
+LL |     a.5.2E+
+   |       ^^^^^ expected one of `.`, `;`, `?`, `}`, or an operator
+
+error: aborting due to 3 previous errors
+
diff --git a/tests/ui/parser/issue-91421.rs b/tests/ui/parser/issue-91421.rs
new file mode 100644
index 000000000..8bba27f37
--- /dev/null
+++ b/tests/ui/parser/issue-91421.rs
@@ -0,0 +1,9 @@
+// Regression test for issue #91421.
+
+fn main() {
+    let value = if true && {
+    //~^ ERROR: this `if` expression is missing a block after the condition
+    //~| HELP: this binary operation is possibly unfinished
+        3
+    } else { 4 };
+}
diff --git a/tests/ui/parser/issue-91421.stderr b/tests/ui/parser/issue-91421.stderr
new file mode 100644
index 000000000..2d9652051
--- /dev/null
+++ b/tests/ui/parser/issue-91421.stderr
@@ -0,0 +1,14 @@
+error: this `if` expression is missing a block after the condition
+  --> $DIR/issue-91421.rs:4:17
+   |
+LL |     let value = if true && {
+   |                 ^^
+   |
+help: this binary operation is possibly unfinished
+  --> $DIR/issue-91421.rs:4:20
+   |
+LL |     let value = if true && {
+   |                    ^^^^^^^
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issue-99625-enum-struct-mutually-exclusive.fixed b/tests/ui/parser/issue-99625-enum-struct-mutually-exclusive.fixed
new file mode 100644
index 000000000..4b4a416b1
--- /dev/null
+++ b/tests/ui/parser/issue-99625-enum-struct-mutually-exclusive.fixed
@@ -0,0 +1,13 @@
+// run-rustfix
+
+pub enum Range {
+    //~^ ERROR `enum` and `struct` are mutually exclusive
+    Valid {
+        begin: u32,
+        len: u32,
+    },
+    Out,
+}
+
+fn main() {
+}
diff --git a/tests/ui/parser/issue-99625-enum-struct-mutually-exclusive.rs b/tests/ui/parser/issue-99625-enum-struct-mutually-exclusive.rs
new file mode 100644
index 000000000..9cc886641
--- /dev/null
+++ b/tests/ui/parser/issue-99625-enum-struct-mutually-exclusive.rs
@@ -0,0 +1,13 @@
+// run-rustfix
+
+pub enum struct Range {
+    //~^ ERROR `enum` and `struct` are mutually exclusive
+    Valid {
+        begin: u32,
+        len: u32,
+    },
+    Out,
+}
+
+fn main() {
+}
diff --git a/tests/ui/parser/issue-99625-enum-struct-mutually-exclusive.stderr b/tests/ui/parser/issue-99625-enum-struct-mutually-exclusive.stderr
new file mode 100644
index 000000000..edc640bf5
--- /dev/null
+++ b/tests/ui/parser/issue-99625-enum-struct-mutually-exclusive.stderr
@@ -0,0 +1,8 @@
+error: `enum` and `struct` are mutually exclusive
+  --> $DIR/issue-99625-enum-struct-mutually-exclusive.rs:3:5
+   |
+LL | pub enum struct Range {
+   |     ^^^^^^^^^^^ help: replace `enum struct` with: `enum`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issue-99910-const-let-mutually-exclusive.fixed b/tests/ui/parser/issue-99910-const-let-mutually-exclusive.fixed
new file mode 100644
index 000000000..64ab6f62b
--- /dev/null
+++ b/tests/ui/parser/issue-99910-const-let-mutually-exclusive.fixed
@@ -0,0 +1,8 @@
+// run-rustfix
+
+fn main() {
+    const _FOO: i32 = 123;
+    //~^ ERROR const` and `let` are mutually exclusive
+    const _BAR: i32 = 123;
+    //~^ ERROR `const` and `let` are mutually exclusive
+}
diff --git a/tests/ui/parser/issue-99910-const-let-mutually-exclusive.rs b/tests/ui/parser/issue-99910-const-let-mutually-exclusive.rs
new file mode 100644
index 000000000..50520971f
--- /dev/null
+++ b/tests/ui/parser/issue-99910-const-let-mutually-exclusive.rs
@@ -0,0 +1,8 @@
+// run-rustfix
+
+fn main() {
+    const let _FOO: i32 = 123;
+    //~^ ERROR const` and `let` are mutually exclusive
+    let const _BAR: i32 = 123;
+    //~^ ERROR `const` and `let` are mutually exclusive
+}
diff --git a/tests/ui/parser/issue-99910-const-let-mutually-exclusive.stderr b/tests/ui/parser/issue-99910-const-let-mutually-exclusive.stderr
new file mode 100644
index 000000000..72377fc37
--- /dev/null
+++ b/tests/ui/parser/issue-99910-const-let-mutually-exclusive.stderr
@@ -0,0 +1,14 @@
+error: `const` and `let` are mutually exclusive
+  --> $DIR/issue-99910-const-let-mutually-exclusive.rs:4:5
+   |
+LL |     const let _FOO: i32 = 123;
+   |     ^^^^^^^^^ help: remove `let`: `const`
+
+error: `const` and `let` are mutually exclusive
+  --> $DIR/issue-99910-const-let-mutually-exclusive.rs:6:5
+   |
+LL |     let const _BAR: i32 = 123;
+   |     ^^^^^^^^^ help: remove `let`: `const`
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/issues/auxiliary/issue-21146-inc.rs b/tests/ui/parser/issues/auxiliary/issue-21146-inc.rs
new file mode 100644
index 000000000..32a3b9dcc
--- /dev/null
+++ b/tests/ui/parser/issues/auxiliary/issue-21146-inc.rs
@@ -0,0 +1,3 @@
+// include file for issue-21146.rs
+
+parse_error
diff --git a/tests/ui/parser/issues/auxiliary/issue-89971-outer-attr-following-inner-attr-ice.rs b/tests/ui/parser/issues/auxiliary/issue-89971-outer-attr-following-inner-attr-ice.rs
new file mode 100644
index 000000000..e5604b816
--- /dev/null
+++ b/tests/ui/parser/issues/auxiliary/issue-89971-outer-attr-following-inner-attr-ice.rs
@@ -0,0 +1,13 @@
+// force-host
+// no-prefer-dynamic
+
+#![crate_type = "proc-macro"]
+
+extern crate proc_macro;
+
+use proc_macro::TokenStream;
+
+#[proc_macro_derive(ICE)]
+pub fn derive(_: TokenStream) -> TokenStream {
+    r#"#[allow(missing_docs)] struct X { }"#.parse().unwrap()
+}
diff --git a/tests/ui/parser/issues/auxiliary/issue-94340-inc.rs b/tests/ui/parser/issues/auxiliary/issue-94340-inc.rs
new file mode 100644
index 000000000..9429e5143
--- /dev/null
+++ b/tests/ui/parser/issues/auxiliary/issue-94340-inc.rs
@@ -0,0 +1,3 @@
+// include file for issue-94340.rs
+#![deny(rust_2018_idioms)]
+#![deny(unused_must_use)]
diff --git a/tests/ui/parser/issues/issue-101540.rs b/tests/ui/parser/issues/issue-101540.rs
new file mode 100644
index 000000000..328ec6f90
--- /dev/null
+++ b/tests/ui/parser/issues/issue-101540.rs
@@ -0,0 +1,7 @@
+struct S1 {
+    struct S2 {
+    //~^ ERROR structs are not allowed in struct definitions
+    }
+}
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-101540.stderr b/tests/ui/parser/issues/issue-101540.stderr
new file mode 100644
index 000000000..8af887050
--- /dev/null
+++ b/tests/ui/parser/issues/issue-101540.stderr
@@ -0,0 +1,12 @@
+error: structs are not allowed in struct definitions
+  --> $DIR/issue-101540.rs:2:5
+   |
+LL | struct S1 {
+   |        -- while parsing this struct
+LL |     struct S2 {
+   |     ^^^^^^^^^
+   |
+   = help: consider creating a new `struct` definition instead of nesting
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-102182-impl-trait-recover.rs b/tests/ui/parser/issues/issue-102182-impl-trait-recover.rs
new file mode 100644
index 000000000..4bfc676d6
--- /dev/null
+++ b/tests/ui/parser/issues/issue-102182-impl-trait-recover.rs
@@ -0,0 +1,3 @@
+fn foo<T: impl Trait>() {}
+//~^ ERROR expected trait bound, found `impl Trait` type
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-102182-impl-trait-recover.stderr b/tests/ui/parser/issues/issue-102182-impl-trait-recover.stderr
new file mode 100644
index 000000000..52b6ae5df
--- /dev/null
+++ b/tests/ui/parser/issues/issue-102182-impl-trait-recover.stderr
@@ -0,0 +1,14 @@
+error: expected trait bound, found `impl Trait` type
+  --> $DIR/issue-102182-impl-trait-recover.rs:1:11
+   |
+LL | fn foo<T: impl Trait>() {}
+   |           ^^^^^^^^^^ not a trait
+   |
+help: use the trait bounds directly
+   |
+LL - fn foo<T: impl Trait>() {}
+LL + fn foo<T: Trait>() {}
+   |
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-10392-2.fixed b/tests/ui/parser/issues/issue-10392-2.fixed
new file mode 100644
index 000000000..3386fac17
--- /dev/null
+++ b/tests/ui/parser/issues/issue-10392-2.fixed
@@ -0,0 +1,9 @@
+// run-rustfix
+
+pub struct A { pub foo: isize }
+
+fn a() -> A { panic!() }
+
+fn main() {
+    let A { .. } = a(); //~ ERROR: expected `}`
+}
diff --git a/tests/ui/parser/issues/issue-10392-2.rs b/tests/ui/parser/issues/issue-10392-2.rs
new file mode 100644
index 000000000..30628ae31
--- /dev/null
+++ b/tests/ui/parser/issues/issue-10392-2.rs
@@ -0,0 +1,9 @@
+// run-rustfix
+
+pub struct A { pub foo: isize }
+
+fn a() -> A { panic!() }
+
+fn main() {
+    let A { .., } = a(); //~ ERROR: expected `}`
+}
diff --git a/tests/ui/parser/issues/issue-10392-2.stderr b/tests/ui/parser/issues/issue-10392-2.stderr
new file mode 100644
index 000000000..4154ecfeb
--- /dev/null
+++ b/tests/ui/parser/issues/issue-10392-2.stderr
@@ -0,0 +1,12 @@
+error: expected `}`, found `,`
+  --> $DIR/issue-10392-2.rs:8:15
+   |
+LL |     let A { .., } = a();
+   |             --^
+   |             | |
+   |             | expected `}`
+   |             | help: remove this comma
+   |             `..` must be at the end and cannot have a trailing comma
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-10392.rs b/tests/ui/parser/issues/issue-10392.rs
new file mode 100644
index 000000000..5b0c2fc2b
--- /dev/null
+++ b/tests/ui/parser/issues/issue-10392.rs
@@ -0,0 +1,7 @@
+struct A { foo: isize }
+
+fn a() -> A { panic!() }
+
+fn main() {
+    let A { , } = a(); //~ ERROR expected ident
+}
diff --git a/tests/ui/parser/issues/issue-10392.stderr b/tests/ui/parser/issues/issue-10392.stderr
new file mode 100644
index 000000000..438ea67d3
--- /dev/null
+++ b/tests/ui/parser/issues/issue-10392.stderr
@@ -0,0 +1,10 @@
+error: expected identifier, found `,`
+  --> $DIR/issue-10392.rs:6:13
+   |
+LL |     let A { , } = a();
+   |         -   ^ expected identifier
+   |         |
+   |         while parsing the fields for this pattern
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-104088.rs b/tests/ui/parser/issues/issue-104088.rs
new file mode 100644
index 000000000..5f794fe2d
--- /dev/null
+++ b/tests/ui/parser/issues/issue-104088.rs
@@ -0,0 +1,26 @@
+fn test() {
+    if let 123 = 123 { println!("yes"); }
+}
+
+fn test_2() {
+    let 1x = 123;
+    //~^ ERROR expected identifier, found number literal
+}
+
+fn test_3() {
+    let 2x: i32 = 123;
+    //~^ ERROR expected identifier, found number literal
+}
+
+fn test_4() {
+    if let 2e1 = 123 {
+        //~^ ERROR mismatched types
+    }
+}
+
+fn test_5() {
+    let 23name = 123;
+    //~^ ERROR expected identifier, found number literal
+}
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-104088.stderr b/tests/ui/parser/issues/issue-104088.stderr
new file mode 100644
index 000000000..ff4b4bdb6
--- /dev/null
+++ b/tests/ui/parser/issues/issue-104088.stderr
@@ -0,0 +1,29 @@
+error: expected identifier, found number literal
+  --> $DIR/issue-104088.rs:6:9
+   |
+LL |     let 1x = 123;
+   |         ^^ identifiers cannot start with a number
+
+error: expected identifier, found number literal
+  --> $DIR/issue-104088.rs:11:9
+   |
+LL |     let 2x: i32 = 123;
+   |         ^^ identifiers cannot start with a number
+
+error: expected identifier, found number literal
+  --> $DIR/issue-104088.rs:22:9
+   |
+LL |     let 23name = 123;
+   |         ^^^^^^ identifiers cannot start with a number
+
+error[E0308]: mismatched types
+  --> $DIR/issue-104088.rs:16:12
+   |
+LL |     if let 2e1 = 123 {
+   |            ^^^   --- this expression has type `{integer}`
+   |            |
+   |            expected integer, found floating-point number
+
+error: aborting due to 4 previous errors
+
+For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/parser/issues/issue-10636-1.rs b/tests/ui/parser/issues/issue-10636-1.rs
new file mode 100644
index 000000000..77c6072d6
--- /dev/null
+++ b/tests/ui/parser/issues/issue-10636-1.rs
@@ -0,0 +1,8 @@
+struct Obj {
+    //~^ NOTE: unclosed delimiter
+    member: usize
+)
+//~^ ERROR mismatched closing delimiter
+//~| NOTE mismatched closing delimiter
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-10636-1.stderr b/tests/ui/parser/issues/issue-10636-1.stderr
new file mode 100644
index 000000000..1e6294ebe
--- /dev/null
+++ b/tests/ui/parser/issues/issue-10636-1.stderr
@@ -0,0 +1,11 @@
+error: mismatched closing delimiter: `)`
+  --> $DIR/issue-10636-1.rs:1:12
+   |
+LL | struct Obj {
+   |            ^ unclosed delimiter
+...
+LL | )
+   | ^ mismatched closing delimiter
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-10636-2.rs b/tests/ui/parser/issues/issue-10636-2.rs
new file mode 100644
index 000000000..6fb63639d
--- /dev/null
+++ b/tests/ui/parser/issues/issue-10636-2.rs
@@ -0,0 +1,11 @@
+// FIXME(31528) we emit a bunch of silly errors here due to continuing past the
+// first one. This would be easy-ish to address by better recovery in tokenisation.
+
+pub fn trace_option(option: Option<isize>) {
+    option.map(|some| 42;
+                          //~^ ERROR: expected one of
+
+}
+//~^ ERROR: expected expression, found `)`
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-10636-2.stderr b/tests/ui/parser/issues/issue-10636-2.stderr
new file mode 100644
index 000000000..d4f2da9e3
--- /dev/null
+++ b/tests/ui/parser/issues/issue-10636-2.stderr
@@ -0,0 +1,16 @@
+error: expected one of `)`, `,`, `.`, `?`, or an operator, found `;`
+  --> $DIR/issue-10636-2.rs:5:15
+   |
+LL |     option.map(|some| 42;
+   |               ^         ^ help: `)` may belong here
+   |               |
+   |               unclosed delimiter
+
+error: expected expression, found `)`
+  --> $DIR/issue-10636-2.rs:8:1
+   |
+LL | }
+   | ^ expected expression
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/issues/issue-13483.rs b/tests/ui/parser/issues/issue-13483.rs
new file mode 100644
index 000000000..4e32fcab3
--- /dev/null
+++ b/tests/ui/parser/issues/issue-13483.rs
@@ -0,0 +1,17 @@
+fn main() {
+    if true {
+    } else if {
+    //~^ ERROR missing condition for `if` expression
+    } else {
+    }
+}
+
+fn foo() {
+    if true {
+    } else if {
+    //~^ ERROR missing condition for `if` expression
+    }
+    bar();
+}
+
+fn bar() {}
diff --git a/tests/ui/parser/issues/issue-13483.stderr b/tests/ui/parser/issues/issue-13483.stderr
new file mode 100644
index 000000000..f5534090f
--- /dev/null
+++ b/tests/ui/parser/issues/issue-13483.stderr
@@ -0,0 +1,18 @@
+error: missing condition for `if` expression
+  --> $DIR/issue-13483.rs:3:14
+   |
+LL |     } else if {
+   |              ^- if this block is the condition of the `if` expression, then it must be followed by another block
+   |              |
+   |              expected condition here
+
+error: missing condition for `if` expression
+  --> $DIR/issue-13483.rs:11:14
+   |
+LL |     } else if {
+   |              ^- if this block is the condition of the `if` expression, then it must be followed by another block
+   |              |
+   |              expected condition here
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/issues/issue-14303-fncall.full.stderr b/tests/ui/parser/issues/issue-14303-fncall.full.stderr
new file mode 100644
index 000000000..0c152516a
--- /dev/null
+++ b/tests/ui/parser/issues/issue-14303-fncall.full.stderr
@@ -0,0 +1,9 @@
+error[E0747]: type provided when a lifetime was expected
+  --> $DIR/issue-14303-fncall.rs:15:26
+   |
+LL |         .collect::<Vec<S<_, 'a>>>();
+   |                          ^
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0747`.
diff --git a/tests/ui/parser/issues/issue-14303-fncall.generic_arg.stderr b/tests/ui/parser/issues/issue-14303-fncall.generic_arg.stderr
new file mode 100644
index 000000000..571815776
--- /dev/null
+++ b/tests/ui/parser/issues/issue-14303-fncall.generic_arg.stderr
@@ -0,0 +1,9 @@
+error[E0747]: inferred provided when a lifetime was expected
+  --> $DIR/issue-14303-fncall.rs:15:26
+   |
+LL |         .collect::<Vec<S<_, 'a>>>();
+   |                          ^
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0747`.
diff --git a/tests/ui/parser/issues/issue-14303-fncall.rs b/tests/ui/parser/issues/issue-14303-fncall.rs
new file mode 100644
index 000000000..afc4959f1
--- /dev/null
+++ b/tests/ui/parser/issues/issue-14303-fncall.rs
@@ -0,0 +1,20 @@
+// revisions: full generic_arg
+// can't run rustfix because it doesn't handle multipart suggestions correctly
+// we need the above to avoid ast borrowck failure in recovered code
+#![cfg_attr(generic_arg, feature(generic_arg_infer))]
+
+
+struct S<'a, T> {
+    a: &'a T,
+    b: &'a T,
+}
+
+fn foo<'a, 'b>(start: &'a usize, end: &'a usize) {
+    let _x = (*start..*end)
+        .map(|x| S { a: start, b: end })
+        .collect::<Vec<S<_, 'a>>>();
+        //[generic_arg]~^ ERROR inferred provided when a lifetime was expected
+        //[full]~^^ ERROR type provided when a lifetime was expected
+}
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-14303.rs b/tests/ui/parser/issues/issue-14303.rs
new file mode 100644
index 000000000..82850d77a
--- /dev/null
+++ b/tests/ui/parser/issues/issue-14303.rs
@@ -0,0 +1,33 @@
+enum Enum<'a, T, 'b> {
+//~^ ERROR lifetime parameters must be declared prior to type and const parameters
+    A(&'a &'b T)
+}
+
+struct Struct<'a, T, 'b> {
+//~^ ERROR lifetime parameters must be declared prior to type and const parameters
+    x: &'a &'b T
+}
+
+trait Trait<'a, T, 'b> {}
+//~^ ERROR lifetime parameters must be declared prior to type and const parameters
+
+fn foo<'a, T, 'b>(x: &'a T) {}
+//~^ ERROR lifetime parameters must be declared prior to type and const parameters
+
+struct Y<T>(T);
+impl<'a, T, 'b> Y<T> {}
+//~^ ERROR lifetime parameters must be declared prior to type and const parameters
+
+mod bar {
+    pub struct X<'a, 'b, 'c, T> {
+        a: &'a str,
+        b: &'b str,
+        c: &'c str,
+        t: T,
+    }
+}
+
+fn bar<'a, 'b, 'c, T>(x: bar::X<'a, T, 'b, 'c>) {}
+//~^ ERROR type provided when a lifetime was expected
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-14303.stderr b/tests/ui/parser/issues/issue-14303.stderr
new file mode 100644
index 000000000..f121107c0
--- /dev/null
+++ b/tests/ui/parser/issues/issue-14303.stderr
@@ -0,0 +1,39 @@
+error: lifetime parameters must be declared prior to type and const parameters
+  --> $DIR/issue-14303.rs:1:18
+   |
+LL | enum Enum<'a, T, 'b> {
+   |          --------^^- help: reorder the parameters: lifetimes, then consts and types: `<'a, 'b, T>`
+
+error: lifetime parameters must be declared prior to type and const parameters
+  --> $DIR/issue-14303.rs:6:22
+   |
+LL | struct Struct<'a, T, 'b> {
+   |              --------^^- help: reorder the parameters: lifetimes, then consts and types: `<'a, 'b, T>`
+
+error: lifetime parameters must be declared prior to type and const parameters
+  --> $DIR/issue-14303.rs:11:20
+   |
+LL | trait Trait<'a, T, 'b> {}
+   |            --------^^- help: reorder the parameters: lifetimes, then consts and types: `<'a, 'b, T>`
+
+error: lifetime parameters must be declared prior to type and const parameters
+  --> $DIR/issue-14303.rs:14:15
+   |
+LL | fn foo<'a, T, 'b>(x: &'a T) {}
+   |       --------^^- help: reorder the parameters: lifetimes, then consts and types: `<'a, 'b, T>`
+
+error: lifetime parameters must be declared prior to type and const parameters
+  --> $DIR/issue-14303.rs:18:13
+   |
+LL | impl<'a, T, 'b> Y<T> {}
+   |     --------^^- help: reorder the parameters: lifetimes, then consts and types: `<'a, 'b, T>`
+
+error[E0747]: type provided when a lifetime was expected
+  --> $DIR/issue-14303.rs:30:37
+   |
+LL | fn bar<'a, 'b, 'c, T>(x: bar::X<'a, T, 'b, 'c>) {}
+   |                                     ^
+
+error: aborting due to 6 previous errors
+
+For more information about this error, try `rustc --explain E0747`.
diff --git a/tests/ui/parser/issues/issue-15914.rs b/tests/ui/parser/issues/issue-15914.rs
new file mode 100644
index 000000000..4a5606af6
--- /dev/null
+++ b/tests/ui/parser/issues/issue-15914.rs
@@ -0,0 +1,4 @@
+fn main() {
+    let ref
+        (); //~ ERROR expected identifier, found `(`
+}
diff --git a/tests/ui/parser/issues/issue-15914.stderr b/tests/ui/parser/issues/issue-15914.stderr
new file mode 100644
index 000000000..ea26453f8
--- /dev/null
+++ b/tests/ui/parser/issues/issue-15914.stderr
@@ -0,0 +1,8 @@
+error: expected identifier, found `(`
+  --> $DIR/issue-15914.rs:3:9
+   |
+LL |         ();
+   |         ^ expected identifier
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-15980.rs b/tests/ui/parser/issues/issue-15980.rs
new file mode 100644
index 000000000..87faa7d5f
--- /dev/null
+++ b/tests/ui/parser/issues/issue-15980.rs
@@ -0,0 +1,17 @@
+use std::io;
+
+fn main(){
+    let x: io::Result<()> = Ok(());
+    match x {
+        Err(ref e) if e.kind == io::EndOfFile {
+            //~^ NOTE while parsing this struct
+            return
+            //~^ ERROR expected identifier, found keyword `return`
+            //~| NOTE expected identifier, found keyword
+        }
+        //~^ NOTE expected one of `.`, `=>`, `?`, or an operator
+        _ => {}
+        //~^ ERROR expected one of `.`, `=>`, `?`, or an operator, found reserved identifier `_`
+        //~| NOTE unexpected token
+    }
+}
diff --git a/tests/ui/parser/issues/issue-15980.stderr b/tests/ui/parser/issues/issue-15980.stderr
new file mode 100644
index 000000000..c59c81119
--- /dev/null
+++ b/tests/ui/parser/issues/issue-15980.stderr
@@ -0,0 +1,25 @@
+error: expected identifier, found keyword `return`
+  --> $DIR/issue-15980.rs:8:13
+   |
+LL |         Err(ref e) if e.kind == io::EndOfFile {
+   |                                 ------------- while parsing this struct
+LL |
+LL |             return
+   |             ^^^^^^ expected identifier, found keyword
+   |
+help: escape `return` to use it as an identifier
+   |
+LL |             r#return
+   |             ++
+
+error: expected one of `.`, `=>`, `?`, or an operator, found reserved identifier `_`
+  --> $DIR/issue-15980.rs:13:9
+   |
+LL |         }
+   |          - expected one of `.`, `=>`, `?`, or an operator
+LL |
+LL |         _ => {}
+   |         ^ unexpected token
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/issues/issue-1655.rs b/tests/ui/parser/issues/issue-1655.rs
new file mode 100644
index 000000000..e9fc6f153
--- /dev/null
+++ b/tests/ui/parser/issues/issue-1655.rs
@@ -0,0 +1,10 @@
+mod blade_runner {
+    #vec[doc( //~ ERROR expected one of `!` or `[`, found `vec`
+        brief = "Blade Runner is probably the best movie ever",
+        desc = "I like that in the world of Blade Runner it is always
+                raining, and that it's always night time. And Aliens
+                was also a really good movie.
+
+                Alien 3 was crap though."
+    )]
+}
diff --git a/tests/ui/parser/issues/issue-1655.stderr b/tests/ui/parser/issues/issue-1655.stderr
new file mode 100644
index 000000000..0c390a0ec
--- /dev/null
+++ b/tests/ui/parser/issues/issue-1655.stderr
@@ -0,0 +1,8 @@
+error: expected one of `!` or `[`, found `vec`
+  --> $DIR/issue-1655.rs:2:6
+   |
+LL |     #vec[doc(
+   |      ^^^ expected one of `!` or `[`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-17718-const-mut.rs b/tests/ui/parser/issues/issue-17718-const-mut.rs
new file mode 100644
index 000000000..795a8c763
--- /dev/null
+++ b/tests/ui/parser/issues/issue-17718-const-mut.rs
@@ -0,0 +1,7 @@
+const
+mut //~ ERROR: const globals cannot be mutable
+//~^^ HELP you might want to declare a static instead
+FOO: usize = 3;
+
+fn main() {
+}
diff --git a/tests/ui/parser/issues/issue-17718-const-mut.stderr b/tests/ui/parser/issues/issue-17718-const-mut.stderr
new file mode 100644
index 000000000..8251ce999
--- /dev/null
+++ b/tests/ui/parser/issues/issue-17718-const-mut.stderr
@@ -0,0 +1,10 @@
+error: const globals cannot be mutable
+  --> $DIR/issue-17718-const-mut.rs:2:1
+   |
+LL | const
+   | ----- help: you might want to declare a static instead: `static`
+LL | mut
+   | ^^^ cannot be mutable
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-17904-2.rs b/tests/ui/parser/issues/issue-17904-2.rs
new file mode 100644
index 000000000..186a955c3
--- /dev/null
+++ b/tests/ui/parser/issues/issue-17904-2.rs
@@ -0,0 +1,3 @@
+struct Bar<T> { x: T } where T: Copy //~ ERROR expected item, found keyword `where`
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-17904-2.stderr b/tests/ui/parser/issues/issue-17904-2.stderr
new file mode 100644
index 000000000..9c7fdf6cc
--- /dev/null
+++ b/tests/ui/parser/issues/issue-17904-2.stderr
@@ -0,0 +1,8 @@
+error: expected item, found keyword `where`
+  --> $DIR/issue-17904-2.rs:1:24
+   |
+LL | struct Bar<T> { x: T } where T: Copy
+   |                        ^^^^^ expected item
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-17904.rs b/tests/ui/parser/issues/issue-17904.rs
new file mode 100644
index 000000000..020fb41c2
--- /dev/null
+++ b/tests/ui/parser/issues/issue-17904.rs
@@ -0,0 +1,8 @@
+// compile-flags: -Zparse-only
+
+struct Baz<U> where U: Eq(U); //This is parsed as the new Fn* style parenthesis syntax.
+struct Baz<U> where U: Eq(U) -> R; // Notice this parses as well.
+struct Baz<U>(U) where U: Eq; // This rightfully signals no error as well.
+struct Foo<T> where T: Copy, (T); //~ ERROR where clauses are not allowed before tuple struct bodies
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-17904.stderr b/tests/ui/parser/issues/issue-17904.stderr
new file mode 100644
index 000000000..aa343975d
--- /dev/null
+++ b/tests/ui/parser/issues/issue-17904.stderr
@@ -0,0 +1,17 @@
+error: where clauses are not allowed before tuple struct bodies
+  --> $DIR/issue-17904.rs:6:15
+   |
+LL | struct Foo<T> where T: Copy, (T);
+   |        ---    ^^^^^^^^^^^^^^ --- the struct body
+   |        |      |
+   |        |      unexpected where clause
+   |        while parsing this tuple struct
+   |
+help: move the body before the where clause
+   |
+LL - struct Foo<T> where T: Copy, (T);
+LL + struct Foo<T>(T) where T: Copy;
+   |
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-1802-1.rs b/tests/ui/parser/issues/issue-1802-1.rs
new file mode 100644
index 000000000..3c34b0d8f
--- /dev/null
+++ b/tests/ui/parser/issues/issue-1802-1.rs
@@ -0,0 +1,7 @@
+fn log(a: i32, b: i32) {}
+
+fn main() {
+    let error = 42;
+    log(error, 0b);
+    //~^ ERROR no valid digits found for number
+}
diff --git a/tests/ui/parser/issues/issue-1802-1.stderr b/tests/ui/parser/issues/issue-1802-1.stderr
new file mode 100644
index 000000000..954cc0bee
--- /dev/null
+++ b/tests/ui/parser/issues/issue-1802-1.stderr
@@ -0,0 +1,9 @@
+error[E0768]: no valid digits found for number
+  --> $DIR/issue-1802-1.rs:5:16
+   |
+LL |     log(error, 0b);
+   |                ^^
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0768`.
diff --git a/tests/ui/parser/issues/issue-1802-2.rs b/tests/ui/parser/issues/issue-1802-2.rs
new file mode 100644
index 000000000..3c34b0d8f
--- /dev/null
+++ b/tests/ui/parser/issues/issue-1802-2.rs
@@ -0,0 +1,7 @@
+fn log(a: i32, b: i32) {}
+
+fn main() {
+    let error = 42;
+    log(error, 0b);
+    //~^ ERROR no valid digits found for number
+}
diff --git a/tests/ui/parser/issues/issue-1802-2.stderr b/tests/ui/parser/issues/issue-1802-2.stderr
new file mode 100644
index 000000000..49043d07b
--- /dev/null
+++ b/tests/ui/parser/issues/issue-1802-2.stderr
@@ -0,0 +1,9 @@
+error[E0768]: no valid digits found for number
+  --> $DIR/issue-1802-2.rs:5:16
+   |
+LL |     log(error, 0b);
+   |                ^^
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0768`.
diff --git a/tests/ui/parser/issues/issue-19096.rs b/tests/ui/parser/issues/issue-19096.rs
new file mode 100644
index 000000000..c5bfd10ee
--- /dev/null
+++ b/tests/ui/parser/issues/issue-19096.rs
@@ -0,0 +1,10 @@
+fn main() { // we don't complain about the return type being `{integer}`
+    let t = (42, 42);
+    t.0::<isize>; //~ ERROR expected one of `.`, `;`, `?`, `}`, or an operator, found `::`
+}
+
+fn foo() -> usize { // we don't complain about the return type being unit
+    let t = (42, 42);
+    t.0::<isize>; //~ ERROR expected one of `.`, `;`, `?`, `}`, or an operator, found `::`
+    42;
+}
diff --git a/tests/ui/parser/issues/issue-19096.stderr b/tests/ui/parser/issues/issue-19096.stderr
new file mode 100644
index 000000000..4df7f878b
--- /dev/null
+++ b/tests/ui/parser/issues/issue-19096.stderr
@@ -0,0 +1,14 @@
+error: expected one of `.`, `;`, `?`, `}`, or an operator, found `::`
+  --> $DIR/issue-19096.rs:3:8
+   |
+LL |     t.0::<isize>;
+   |        ^^ expected one of `.`, `;`, `?`, `}`, or an operator
+
+error: expected one of `.`, `;`, `?`, `}`, or an operator, found `::`
+  --> $DIR/issue-19096.rs:8:8
+   |
+LL |     t.0::<isize>;
+   |        ^^ expected one of `.`, `;`, `?`, `}`, or an operator
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/issues/issue-19398.rs b/tests/ui/parser/issues/issue-19398.rs
new file mode 100644
index 000000000..46eb320a1
--- /dev/null
+++ b/tests/ui/parser/issues/issue-19398.rs
@@ -0,0 +1,6 @@
+trait T {
+    extern "Rust" unsafe fn foo();
+    //~^ ERROR expected `{`, found keyword `unsafe`
+}
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-19398.stderr b/tests/ui/parser/issues/issue-19398.stderr
new file mode 100644
index 000000000..1da00960a
--- /dev/null
+++ b/tests/ui/parser/issues/issue-19398.stderr
@@ -0,0 +1,13 @@
+error: expected `{`, found keyword `unsafe`
+  --> $DIR/issue-19398.rs:2:19
+   |
+LL | trait T {
+   |         - while parsing this item list starting here
+LL |     extern "Rust" unsafe fn foo();
+   |                   ^^^^^^ expected `{`
+LL |
+LL | }
+   | - the item list ends here
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-20616-1.rs b/tests/ui/parser/issues/issue-20616-1.rs
new file mode 100644
index 000000000..49e9cb310
--- /dev/null
+++ b/tests/ui/parser/issues/issue-20616-1.rs
@@ -0,0 +1,36 @@
+// We need all these 9 issue-20616-N.rs files
+// because we can only catch one parsing error at a time
+
+
+
+type Type_1_<'a, T> = &'a T;
+
+
+type Type_1<'a T> = &'a T; //~ error: expected one of `,`, `:`, or `>`, found `T`
+
+
+//type Type_2 = Type_1_<'static ()>; // error: expected `,` or `>` after lifetime name, found `(`
+
+
+//type Type_3<T> = Box<T,,>; // error: expected type, found `,`
+
+
+//type Type_4<T> = Type_1_<'static,, T>; // error: expected type, found `,`
+
+
+type Type_5_<'a> = Type_1_<'a, ()>;
+
+
+//type Type_5<'a> = Type_1_<'a, (),,>; // error: expected type, found `,`
+
+
+//type Type_6 = Type_5_<'a,,>; // error: expected type, found `,`
+
+
+//type Type_7 = Box<(),,>; // error: expected type, found `,`
+
+
+//type Type_8<'a,,> = &'a (); // error: expected ident, found `,`
+
+
+//type Type_9<T,,> = Box<T>; // error: expected ident, found `,`
diff --git a/tests/ui/parser/issues/issue-20616-1.stderr b/tests/ui/parser/issues/issue-20616-1.stderr
new file mode 100644
index 000000000..816046237
--- /dev/null
+++ b/tests/ui/parser/issues/issue-20616-1.stderr
@@ -0,0 +1,8 @@
+error: expected one of `,`, `:`, or `>`, found `T`
+  --> $DIR/issue-20616-1.rs:9:16
+   |
+LL | type Type_1<'a T> = &'a T;
+   |                ^ expected one of `,`, `:`, or `>`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-20616-2.rs b/tests/ui/parser/issues/issue-20616-2.rs
new file mode 100644
index 000000000..2f2c6903a
--- /dev/null
+++ b/tests/ui/parser/issues/issue-20616-2.rs
@@ -0,0 +1,36 @@
+// We need all these 9 issue-20616-N.rs files
+// because we can only catch one parsing error at a time
+
+
+
+type Type_1_<'a, T> = &'a T;
+
+
+//type Type_1<'a T> = &'a T; // error: expected `,` or `>` after lifetime name, found `T`
+
+
+type Type_2 = Type_1_<'static ()>; //~ error: expected one of `,` or `>`, found `(`
+
+
+//type Type_3<T> = Box<T,,>; // error: expected type, found `,`
+
+
+//type Type_4<T> = Type_1_<'static,, T>; // error: expected type, found `,`
+
+
+type Type_5_<'a> = Type_1_<'a, ()>;
+
+
+//type Type_5<'a> = Type_1_<'a, (),,>; // error: expected type, found `,`
+
+
+//type Type_6 = Type_5_<'a,,>; // error: expected type, found `,`
+
+
+//type Type_7 = Box<(),,>; // error: expected type, found `,`
+
+
+//type Type_8<'a,,> = &'a (); // error: expected ident, found `,`
+
+
+//type Type_9<T,,> = Box<T>; // error: expected ident, found `,`
diff --git a/tests/ui/parser/issues/issue-20616-2.stderr b/tests/ui/parser/issues/issue-20616-2.stderr
new file mode 100644
index 000000000..42059685c
--- /dev/null
+++ b/tests/ui/parser/issues/issue-20616-2.stderr
@@ -0,0 +1,13 @@
+error: expected one of `,` or `>`, found `(`
+  --> $DIR/issue-20616-2.rs:12:31
+   |
+LL | type Type_2 = Type_1_<'static ()>;
+   |                               ^ expected one of `,` or `>`
+   |
+help: you might have meant to end the type parameters here
+   |
+LL | type Type_2 = Type_1_<'static> ()>;
+   |                              +
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-20616-3.rs b/tests/ui/parser/issues/issue-20616-3.rs
new file mode 100644
index 000000000..b2371051c
--- /dev/null
+++ b/tests/ui/parser/issues/issue-20616-3.rs
@@ -0,0 +1,35 @@
+// We need all these 9 issue-20616-N.rs files
+// because we can only catch one parsing error at a time
+
+type Type_1_<'a, T> = &'a T;
+
+
+//type Type_1<'a T> = &'a T; // error: expected `,` or `>` after lifetime name, found `T`
+
+
+//type Type_2 = Type_1_<'static ()>; // error: expected `,` or `>` after lifetime name, found `(`
+
+
+type Type_3<T> = Box<T,,>;
+//~^ error: expected one of `>`, a const expression, lifetime, or type, found `,`
+
+
+//type Type_4<T> = Type_1_<'static,, T>; // error: expected type, found `,`
+
+
+type Type_5_<'a> = Type_1_<'a, ()>;
+
+
+//type Type_5<'a> = Type_1_<'a, (),,>; // error: expected type, found `,`
+
+
+//type Type_6 = Type_5_<'a,,>; // error: expected type, found `,`
+
+
+//type Type_7 = Box<(),,>; // error: expected type, found `,`
+
+
+//type Type_8<'a,,> = &'a (); // error: expected ident, found `,`
+
+
+//type Type_9<T,,> = Box<T>; // error: expected ident, found `,`
diff --git a/tests/ui/parser/issues/issue-20616-3.stderr b/tests/ui/parser/issues/issue-20616-3.stderr
new file mode 100644
index 000000000..dbff116e5
--- /dev/null
+++ b/tests/ui/parser/issues/issue-20616-3.stderr
@@ -0,0 +1,13 @@
+error: expected one of `>`, a const expression, lifetime, or type, found `,`
+  --> $DIR/issue-20616-3.rs:13:24
+   |
+LL | type Type_3<T> = Box<T,,>;
+   |                        ^ expected one of `>`, a const expression, lifetime, or type
+   |
+help: you might have meant to end the type parameters here
+   |
+LL | type Type_3<T> = Box<T>,,>;
+   |                       +
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-20616-4.rs b/tests/ui/parser/issues/issue-20616-4.rs
new file mode 100644
index 000000000..a71f47ca4
--- /dev/null
+++ b/tests/ui/parser/issues/issue-20616-4.rs
@@ -0,0 +1,35 @@
+// We need all these 9 issue-20616-N.rs files
+// because we can only catch one parsing error at a time
+
+type Type_1_<'a, T> = &'a T;
+
+
+//type Type_1<'a T> = &'a T; // error: expected `,` or `>` after lifetime name, found `T`
+
+
+//type Type_2 = Type_1_<'static ()>; // error: expected `,` or `>` after lifetime name, found `(`
+
+
+//type Type_3<T> = Box<T,,>; // error: expected type, found `,`
+
+
+type Type_4<T> = Type_1_<'static,, T>;
+//~^ error: expected one of `>`, a const expression, lifetime, or type, found `,`
+
+
+type Type_5_<'a> = Type_1_<'a, ()>;
+
+
+//type Type_5<'a> = Type_1_<'a, (),,>; // error: expected type, found `,`
+
+
+//type Type_6 = Type_5_<'a,,>; // error: expected type, found `,`
+
+
+//type Type_7 = Box<(),,>; // error: expected type, found `,`
+
+
+//type Type_8<'a,,> = &'a (); // error: expected ident, found `,`
+
+
+//type Type_9<T,,> = Box<T>; // error: expected ident, found `,`
diff --git a/tests/ui/parser/issues/issue-20616-4.stderr b/tests/ui/parser/issues/issue-20616-4.stderr
new file mode 100644
index 000000000..48a06e00b
--- /dev/null
+++ b/tests/ui/parser/issues/issue-20616-4.stderr
@@ -0,0 +1,13 @@
+error: expected one of `>`, a const expression, lifetime, or type, found `,`
+  --> $DIR/issue-20616-4.rs:16:34
+   |
+LL | type Type_4<T> = Type_1_<'static,, T>;
+   |                                  ^ expected one of `>`, a const expression, lifetime, or type
+   |
+help: you might have meant to end the type parameters here
+   |
+LL | type Type_4<T> = Type_1_<'static>,, T>;
+   |                                 +
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-20616-5.rs b/tests/ui/parser/issues/issue-20616-5.rs
new file mode 100644
index 000000000..b96d09d59
--- /dev/null
+++ b/tests/ui/parser/issues/issue-20616-5.rs
@@ -0,0 +1,35 @@
+// We need all these 9 issue-20616-N.rs files
+// because we can only catch one parsing error at a time
+
+type Type_1_<'a, T> = &'a T;
+
+
+//type Type_1<'a T> = &'a T; // error: expected `,` or `>` after lifetime name, found `T`
+
+
+//type Type_2 = Type_1_<'static ()>; // error: expected `,` or `>` after lifetime name, found `(`
+
+
+//type Type_3<T> = Box<T,,>; // error: expected type, found `,`
+
+
+//type Type_4<T> = Type_1_<'static,, T>; // error: expected type, found `,`
+
+
+type Type_5_<'a> = Type_1_<'a, ()>;
+
+
+type Type_5<'a> = Type_1_<'a, (),,>;
+//~^ error: expected one of `>`, a const expression, lifetime, or type, found `,`
+
+
+//type Type_6 = Type_5_<'a,,>; // error: expected type, found `,`
+
+
+//type Type_7 = Box<(),,>; // error: expected type, found `,`
+
+
+//type Type_8<'a,,> = &'a (); // error: expected ident, found `,`
+
+
+//type Type_9<T,,> = Box<T>; // error: expected ident, found `,`
diff --git a/tests/ui/parser/issues/issue-20616-5.stderr b/tests/ui/parser/issues/issue-20616-5.stderr
new file mode 100644
index 000000000..84bee2ad1
--- /dev/null
+++ b/tests/ui/parser/issues/issue-20616-5.stderr
@@ -0,0 +1,13 @@
+error: expected one of `>`, a const expression, lifetime, or type, found `,`
+  --> $DIR/issue-20616-5.rs:22:34
+   |
+LL | type Type_5<'a> = Type_1_<'a, (),,>;
+   |                                  ^ expected one of `>`, a const expression, lifetime, or type
+   |
+help: you might have meant to end the type parameters here
+   |
+LL | type Type_5<'a> = Type_1_<'a, ()>,,>;
+   |                                 +
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-20616-6.rs b/tests/ui/parser/issues/issue-20616-6.rs
new file mode 100644
index 000000000..a2c45ecec
--- /dev/null
+++ b/tests/ui/parser/issues/issue-20616-6.rs
@@ -0,0 +1,35 @@
+// We need all these 9 issue-20616-N.rs files
+// because we can only catch one parsing error at a time
+
+type Type_1_<'a, T> = &'a T;
+
+
+//type Type_1<'a T> = &'a T; // error: expected `,` or `>` after lifetime name, found `T`
+
+
+//type Type_2 = Type_1_<'static ()>; // error: expected `,` or `>` after lifetime name, found `(`
+
+
+//type Type_3<T> = Box<T,,>; // error: expected type, found `,`
+
+
+//type Type_4<T> = Type_1_<'static,, T>; // error: expected type, found `,`
+
+
+type Type_5_<'a> = Type_1_<'a, ()>;
+
+
+//type Type_5<'a> = Type_1_<'a, (),,>; // error: expected type, found `,`
+
+
+type Type_6 = Type_5_<'a,,>;
+//~^ error: expected one of `>`, a const expression, lifetime, or type, found `,`
+
+
+//type Type_7 = Box<(),,>; // error: expected type, found `,`
+
+
+//type Type_8<'a,,> = &'a (); // error: expected ident, found `,`
+
+
+//type Type_9<T,,> = Box<T>; // error: expected ident, found `,`
diff --git a/tests/ui/parser/issues/issue-20616-6.stderr b/tests/ui/parser/issues/issue-20616-6.stderr
new file mode 100644
index 000000000..67de41b97
--- /dev/null
+++ b/tests/ui/parser/issues/issue-20616-6.stderr
@@ -0,0 +1,13 @@
+error: expected one of `>`, a const expression, lifetime, or type, found `,`
+  --> $DIR/issue-20616-6.rs:25:26
+   |
+LL | type Type_6 = Type_5_<'a,,>;
+   |                          ^ expected one of `>`, a const expression, lifetime, or type
+   |
+help: you might have meant to end the type parameters here
+   |
+LL | type Type_6 = Type_5_<'a>,,>;
+   |                         +
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-20616-7.rs b/tests/ui/parser/issues/issue-20616-7.rs
new file mode 100644
index 000000000..67209c02a
--- /dev/null
+++ b/tests/ui/parser/issues/issue-20616-7.rs
@@ -0,0 +1,35 @@
+// We need all these 9 issue-20616-N.rs files
+// because we can only catch one parsing error at a time
+
+type Type_1_<'a, T> = &'a T;
+
+
+//type Type_1<'a T> = &'a T; // error: expected `,` or `>` after lifetime name, found `T`
+
+
+//type Type_2 = Type_1_<'static ()>; // error: expected `,` or `>` after lifetime name, found `(`
+
+
+//type Type_3<T> = Box<T,,>; // error: expected type, found `,`
+
+
+//type Type_4<T> = Type_1_<'static,, T>; // error: expected type, found `,`
+
+
+type Type_5_<'a> = Type_1_<'a, ()>;
+
+
+//type Type_5<'a> = Type_1_<'a, (),,>; // error: expected type, found `,`
+
+
+//type Type_6 = Type_5_<'a,,>; // error: expected type, found `,`
+
+
+type Type_7 = Box<(),,>;
+//~^ error: expected one of `>`, a const expression, lifetime, or type, found `,`
+
+
+//type Type_8<'a,,> = &'a (); // error: expected ident, found `,`
+
+
+//type Type_9<T,,> = Box<T>; // error: expected ident, found `,`
diff --git a/tests/ui/parser/issues/issue-20616-7.stderr b/tests/ui/parser/issues/issue-20616-7.stderr
new file mode 100644
index 000000000..3b8e07fa0
--- /dev/null
+++ b/tests/ui/parser/issues/issue-20616-7.stderr
@@ -0,0 +1,13 @@
+error: expected one of `>`, a const expression, lifetime, or type, found `,`
+  --> $DIR/issue-20616-7.rs:28:22
+   |
+LL | type Type_7 = Box<(),,>;
+   |                      ^ expected one of `>`, a const expression, lifetime, or type
+   |
+help: you might have meant to end the type parameters here
+   |
+LL | type Type_7 = Box<()>,,>;
+   |                     +
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-20616-8.rs b/tests/ui/parser/issues/issue-20616-8.rs
new file mode 100644
index 000000000..3ceb58d12
--- /dev/null
+++ b/tests/ui/parser/issues/issue-20616-8.rs
@@ -0,0 +1,35 @@
+// We need all these 9 issue-20616-N.rs files
+// because we can only catch one parsing error at a time
+
+type Type_1_<'a, T> = &'a T;
+
+
+//type Type_1<'a T> = &'a T; // error: expected `,` or `>` after lifetime name, found `T`
+
+
+//type Type_2 = Type_1_<'static ()>; // error: expected `,` or `>` after lifetime name, found `(`
+
+
+//type Type_3<T> = Box<T,,>; // error: expected type, found `,`
+
+
+//type Type_4<T> = Type_1_<'static,, T>; // error: expected type, found `,`
+
+
+type Type_5_<'a> = Type_1_<'a, ()>;
+
+
+//type Type_5<'a> = Type_1_<'a, (),,>; // error: expected type, found `,`
+
+
+//type Type_6 = Type_5_<'a,,>; // error: expected type, found `,`
+
+
+//type Type_7 = Box<(),,>; // error: expected type, found `,`
+
+
+type Type_8<'a,,> = &'a ();
+//~^ error: expected one of `#`, `>`, `const`, identifier, or lifetime, found `,`
+
+
+//type Type_9<T,,> = Box<T>; // error: expected identifier, found `,`
diff --git a/tests/ui/parser/issues/issue-20616-8.stderr b/tests/ui/parser/issues/issue-20616-8.stderr
new file mode 100644
index 000000000..e9f37e50f
--- /dev/null
+++ b/tests/ui/parser/issues/issue-20616-8.stderr
@@ -0,0 +1,8 @@
+error: expected one of `#`, `>`, `const`, identifier, or lifetime, found `,`
+  --> $DIR/issue-20616-8.rs:31:16
+   |
+LL | type Type_8<'a,,> = &'a ();
+   |                ^ expected one of `#`, `>`, `const`, identifier, or lifetime
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-20616-9.rs b/tests/ui/parser/issues/issue-20616-9.rs
new file mode 100644
index 000000000..7f8428448
--- /dev/null
+++ b/tests/ui/parser/issues/issue-20616-9.rs
@@ -0,0 +1,35 @@
+// We need all these 9 issue-20616-N.rs files
+// because we can only catch one parsing error at a time
+
+type Type_1_<'a, T> = &'a T;
+
+
+//type Type_1<'a T> = &'a T; // error: expected `,` or `>` after lifetime name, found `T`
+
+
+//type Type_2 = Type_1_<'static ()>; // error: expected `,` or `>` after lifetime name, found `(`
+
+
+//type Type_3<T> = Box<T,,>; // error: expected type, found `,`
+
+
+//type Type_4<T> = Type_1_<'static,, T>; // error: expected type, found `,`
+
+
+type Type_5_<'a> = Type_1_<'a, ()>;
+
+
+//type Type_5<'a> = Type_1_<'a, (),,>; // error: expected type, found `,`
+
+
+//type Type_6 = Type_5_<'a,,>; // error: expected type, found `,`
+
+
+//type Type_7 = Box<(),,>; // error: expected type, found `,`
+
+
+//type Type_8<'a,,> = &'a (); // error: expected identifier, found `,`
+
+
+type Type_9<T,,> = Box<T>;
+//~^ error: expected one of `#`, `>`, `const`, identifier, or lifetime, found `,`
diff --git a/tests/ui/parser/issues/issue-20616-9.stderr b/tests/ui/parser/issues/issue-20616-9.stderr
new file mode 100644
index 000000000..dc309d1bc
--- /dev/null
+++ b/tests/ui/parser/issues/issue-20616-9.stderr
@@ -0,0 +1,8 @@
+error: expected one of `#`, `>`, `const`, identifier, or lifetime, found `,`
+  --> $DIR/issue-20616-9.rs:34:15
+   |
+LL | type Type_9<T,,> = Box<T>;
+   |               ^ expected one of `#`, `>`, `const`, identifier, or lifetime
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-20711-2.rs b/tests/ui/parser/issues/issue-20711-2.rs
new file mode 100644
index 000000000..168c7e761
--- /dev/null
+++ b/tests/ui/parser/issues/issue-20711-2.rs
@@ -0,0 +1,10 @@
+struct Foo;
+
+impl Foo {
+    fn foo() {}
+
+    #[stable(feature = "rust1", since = "1.0.0")]
+    //~^ ERROR expected item after attributes
+}
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-20711-2.stderr b/tests/ui/parser/issues/issue-20711-2.stderr
new file mode 100644
index 000000000..12b18bbc5
--- /dev/null
+++ b/tests/ui/parser/issues/issue-20711-2.stderr
@@ -0,0 +1,14 @@
+error: expected item after attributes
+  --> $DIR/issue-20711-2.rs:6:5
+   |
+LL | impl Foo {
+   |          - while parsing this item list starting here
+...
+LL |     #[stable(feature = "rust1", since = "1.0.0")]
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+LL |
+LL | }
+   | - the item list ends here
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-20711.rs b/tests/ui/parser/issues/issue-20711.rs
new file mode 100644
index 000000000..020bb79d6
--- /dev/null
+++ b/tests/ui/parser/issues/issue-20711.rs
@@ -0,0 +1,8 @@
+struct Foo;
+
+impl Foo {
+    #[stable(feature = "rust1", since = "1.0.0")]
+    //~^ ERROR expected item after attributes
+}
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-20711.stderr b/tests/ui/parser/issues/issue-20711.stderr
new file mode 100644
index 000000000..4af4b22be
--- /dev/null
+++ b/tests/ui/parser/issues/issue-20711.stderr
@@ -0,0 +1,13 @@
+error: expected item after attributes
+  --> $DIR/issue-20711.rs:4:5
+   |
+LL | impl Foo {
+   |          - while parsing this item list starting here
+LL |     #[stable(feature = "rust1", since = "1.0.0")]
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+LL |
+LL | }
+   | - the item list ends here
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-21146.rs b/tests/ui/parser/issues/issue-21146.rs
new file mode 100644
index 000000000..19eaffc3e
--- /dev/null
+++ b/tests/ui/parser/issues/issue-21146.rs
@@ -0,0 +1,3 @@
+// error-pattern: expected one of `!` or `::`, found `<eof>`
+include!("auxiliary/issue-21146-inc.rs");
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-21146.stderr b/tests/ui/parser/issues/issue-21146.stderr
new file mode 100644
index 000000000..c71fda3d6
--- /dev/null
+++ b/tests/ui/parser/issues/issue-21146.stderr
@@ -0,0 +1,8 @@
+error: expected one of `!` or `::`, found `<eof>`
+  --> $DIR/auxiliary/issue-21146-inc.rs:3:1
+   |
+LL | parse_error
+   | ^^^^^^^^^^^ expected one of `!` or `::`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-21153.rs b/tests/ui/parser/issues/issue-21153.rs
new file mode 100644
index 000000000..bf5fdb1f3
--- /dev/null
+++ b/tests/ui/parser/issues/issue-21153.rs
@@ -0,0 +1,6 @@
+trait MyTrait<T>: Iterator {
+    Item = T;
+    //~^ ERROR expected one of `!` or `::`, found `=`
+}
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-21153.stderr b/tests/ui/parser/issues/issue-21153.stderr
new file mode 100644
index 000000000..cbfa9ded3
--- /dev/null
+++ b/tests/ui/parser/issues/issue-21153.stderr
@@ -0,0 +1,13 @@
+error: expected one of `!` or `::`, found `=`
+  --> $DIR/issue-21153.rs:2:10
+   |
+LL | trait MyTrait<T>: Iterator {
+   |                            - while parsing this item list starting here
+LL |     Item = T;
+   |          ^ expected one of `!` or `::`
+LL |
+LL | }
+   | - the item list ends here
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-21475.rs b/tests/ui/parser/issues/issue-21475.rs
new file mode 100644
index 000000000..b028fcae0
--- /dev/null
+++ b/tests/ui/parser/issues/issue-21475.rs
@@ -0,0 +1,19 @@
+// run-pass
+#![allow(unused_imports, overlapping_range_endpoints)]
+// pretty-expanded FIXME #23616
+
+use m::{START, END};
+
+fn main() {
+    match 42 {
+        m::START..=m::END => {},
+        0..=m::END => {},
+        m::START..=59 => {},
+        _  => {},
+    }
+}
+
+mod m {
+  pub const START: u32 = 4;
+  pub const END:   u32 = 14;
+}
diff --git a/tests/ui/parser/issues/issue-22647.rs b/tests/ui/parser/issues/issue-22647.rs
new file mode 100644
index 000000000..a68614106
--- /dev/null
+++ b/tests/ui/parser/issues/issue-22647.rs
@@ -0,0 +1,15 @@
+fn main() {
+    let caller<F> = |f: F|  //~ ERROR expected one of `:`, `;`, `=`, `@`, or `|`, found `<`
+    where F: Fn() -> i32
+    {
+        let x = f();
+        println!("Y {}",x);
+        return x;
+    };
+
+    caller(bar_handler);
+}
+
+fn bar_handler() -> i32 {
+    5
+}
diff --git a/tests/ui/parser/issues/issue-22647.stderr b/tests/ui/parser/issues/issue-22647.stderr
new file mode 100644
index 000000000..89b454d19
--- /dev/null
+++ b/tests/ui/parser/issues/issue-22647.stderr
@@ -0,0 +1,8 @@
+error: expected one of `:`, `;`, `=`, `@`, or `|`, found `<`
+  --> $DIR/issue-22647.rs:2:15
+   |
+LL |     let caller<F> = |f: F|
+   |               ^ expected one of `:`, `;`, `=`, `@`, or `|`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-22712.rs b/tests/ui/parser/issues/issue-22712.rs
new file mode 100644
index 000000000..774de9c7e
--- /dev/null
+++ b/tests/ui/parser/issues/issue-22712.rs
@@ -0,0 +1,9 @@
+struct Foo<B> {
+    buffer: B
+}
+
+fn bar() {
+    let Foo<Vec<u8>>  //~ ERROR expected one of `:`, `;`, `=`, `@`, or `|`, found `<`
+}
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-22712.stderr b/tests/ui/parser/issues/issue-22712.stderr
new file mode 100644
index 000000000..30fabac65
--- /dev/null
+++ b/tests/ui/parser/issues/issue-22712.stderr
@@ -0,0 +1,8 @@
+error: expected one of `:`, `;`, `=`, `@`, or `|`, found `<`
+  --> $DIR/issue-22712.rs:6:12
+   |
+LL |     let Foo<Vec<u8>>
+   |            ^ expected one of `:`, `;`, `=`, `@`, or `|`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-2354-1.rs b/tests/ui/parser/issues/issue-2354-1.rs
new file mode 100644
index 000000000..996cf1bcb
--- /dev/null
+++ b/tests/ui/parser/issues/issue-2354-1.rs
@@ -0,0 +1 @@
+static foo: isize = 2; } //~ ERROR unexpected closing delimiter:
diff --git a/tests/ui/parser/issues/issue-2354-1.stderr b/tests/ui/parser/issues/issue-2354-1.stderr
new file mode 100644
index 000000000..7ea0f2a98
--- /dev/null
+++ b/tests/ui/parser/issues/issue-2354-1.stderr
@@ -0,0 +1,8 @@
+error: unexpected closing delimiter: `}`
+  --> $DIR/issue-2354-1.rs:1:24
+   |
+LL | static foo: isize = 2; }
+   |                        ^ unexpected closing delimiter
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-2354.rs b/tests/ui/parser/issues/issue-2354.rs
new file mode 100644
index 000000000..c422040cb
--- /dev/null
+++ b/tests/ui/parser/issues/issue-2354.rs
@@ -0,0 +1,15 @@
+fn foo() { //~ NOTE unclosed delimiter
+  match Some(10) {
+  //~^ NOTE this delimiter might not be properly closed...
+      Some(y) => { panic!(); }
+      None => { panic!(); }
+}
+//~^ NOTE ...as it matches this but it has different indentation
+
+fn bar() {
+    let mut i = 0;
+    while (i < 1000) {}
+}
+
+fn main() {}
+//~ ERROR this file contains an unclosed delimiter
diff --git a/tests/ui/parser/issues/issue-2354.stderr b/tests/ui/parser/issues/issue-2354.stderr
new file mode 100644
index 000000000..b89ed3958
--- /dev/null
+++ b/tests/ui/parser/issues/issue-2354.stderr
@@ -0,0 +1,16 @@
+error: this file contains an unclosed delimiter
+  --> $DIR/issue-2354.rs:15:52
+   |
+LL | fn foo() {
+   |          - unclosed delimiter
+LL |   match Some(10) {
+   |                  - this delimiter might not be properly closed...
+...
+LL | }
+   | - ...as it matches this but it has different indentation
+...
+LL |
+   |                                                    ^
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-23620-invalid-escapes.rs b/tests/ui/parser/issues/issue-23620-invalid-escapes.rs
new file mode 100644
index 000000000..c1355f0d6
--- /dev/null
+++ b/tests/ui/parser/issues/issue-23620-invalid-escapes.rs
@@ -0,0 +1,34 @@
+fn main() {
+    let _ = b"\u{a66e}";
+    //~^ ERROR unicode escape in byte string
+
+    let _ = b'\u{a66e}';
+    //~^ ERROR unicode escape in byte string
+
+    let _ = b'\u';
+    //~^ ERROR incorrect unicode escape sequence
+
+    let _ = b'\x5';
+    //~^ ERROR numeric character escape is too short
+
+    let _ = b'\xxy';
+    //~^ ERROR invalid character in numeric character escape: `x`
+
+    let _ = '\x5';
+    //~^ ERROR numeric character escape is too short
+
+    let _ = '\xxy';
+    //~^ ERROR invalid character in numeric character escape: `x`
+
+    let _ = b"\u{a4a4} \xf \u";
+    //~^ ERROR unicode escape in byte string
+    //~^^ ERROR invalid character in numeric character escape: ` `
+    //~^^^ ERROR incorrect unicode escape sequence
+
+    let _ = "\xf \u";
+    //~^ ERROR invalid character in numeric character escape: ` `
+    //~^^ ERROR incorrect unicode escape sequence
+
+    let _ = "\u8f";
+    //~^ ERROR incorrect unicode escape sequence
+}
diff --git a/tests/ui/parser/issues/issue-23620-invalid-escapes.stderr b/tests/ui/parser/issues/issue-23620-invalid-escapes.stderr
new file mode 100644
index 000000000..88d97c795
--- /dev/null
+++ b/tests/ui/parser/issues/issue-23620-invalid-escapes.stderr
@@ -0,0 +1,94 @@
+error: unicode escape in byte string
+  --> $DIR/issue-23620-invalid-escapes.rs:2:15
+   |
+LL |     let _ = b"\u{a66e}";
+   |               ^^^^^^^^ unicode escape in byte string
+   |
+   = help: unicode escape sequences cannot be used as a byte or in a byte string
+
+error: unicode escape in byte string
+  --> $DIR/issue-23620-invalid-escapes.rs:5:15
+   |
+LL |     let _ = b'\u{a66e}';
+   |               ^^^^^^^^ unicode escape in byte string
+   |
+   = help: unicode escape sequences cannot be used as a byte or in a byte string
+
+error: incorrect unicode escape sequence
+  --> $DIR/issue-23620-invalid-escapes.rs:8:15
+   |
+LL |     let _ = b'\u';
+   |               ^^ incorrect unicode escape sequence
+   |
+   = help: format of unicode escape sequences is `\u{...}`
+
+error: numeric character escape is too short
+  --> $DIR/issue-23620-invalid-escapes.rs:11:15
+   |
+LL |     let _ = b'\x5';
+   |               ^^^
+
+error: invalid character in numeric character escape: `x`
+  --> $DIR/issue-23620-invalid-escapes.rs:14:17
+   |
+LL |     let _ = b'\xxy';
+   |                 ^ invalid character in numeric character escape
+
+error: numeric character escape is too short
+  --> $DIR/issue-23620-invalid-escapes.rs:17:14
+   |
+LL |     let _ = '\x5';
+   |              ^^^
+
+error: invalid character in numeric character escape: `x`
+  --> $DIR/issue-23620-invalid-escapes.rs:20:16
+   |
+LL |     let _ = '\xxy';
+   |                ^ invalid character in numeric character escape
+
+error: unicode escape in byte string
+  --> $DIR/issue-23620-invalid-escapes.rs:23:15
+   |
+LL |     let _ = b"\u{a4a4} \xf \u";
+   |               ^^^^^^^^ unicode escape in byte string
+   |
+   = help: unicode escape sequences cannot be used as a byte or in a byte string
+
+error: invalid character in numeric character escape: ` `
+  --> $DIR/issue-23620-invalid-escapes.rs:23:27
+   |
+LL |     let _ = b"\u{a4a4} \xf \u";
+   |                           ^ invalid character in numeric character escape
+
+error: incorrect unicode escape sequence
+  --> $DIR/issue-23620-invalid-escapes.rs:23:28
+   |
+LL |     let _ = b"\u{a4a4} \xf \u";
+   |                            ^^ incorrect unicode escape sequence
+   |
+   = help: format of unicode escape sequences is `\u{...}`
+
+error: invalid character in numeric character escape: ` `
+  --> $DIR/issue-23620-invalid-escapes.rs:28:17
+   |
+LL |     let _ = "\xf \u";
+   |                 ^ invalid character in numeric character escape
+
+error: incorrect unicode escape sequence
+  --> $DIR/issue-23620-invalid-escapes.rs:28:18
+   |
+LL |     let _ = "\xf \u";
+   |                  ^^ incorrect unicode escape sequence
+   |
+   = help: format of unicode escape sequences is `\u{...}`
+
+error: incorrect unicode escape sequence
+  --> $DIR/issue-23620-invalid-escapes.rs:32:14
+   |
+LL |     let _ = "\u8f";
+   |              ^^^-
+   |              |
+   |              help: format of unicode escape sequences uses braces: `\u{8f}`
+
+error: aborting due to 13 previous errors
+
diff --git a/tests/ui/parser/issues/issue-24197.rs b/tests/ui/parser/issues/issue-24197.rs
new file mode 100644
index 000000000..aaf513746
--- /dev/null
+++ b/tests/ui/parser/issues/issue-24197.rs
@@ -0,0 +1,3 @@
+fn main() {
+    let buf[0] = 0; //~ ERROR expected one of `:`, `;`, `=`, `@`, or `|`, found `[`
+}
diff --git a/tests/ui/parser/issues/issue-24197.stderr b/tests/ui/parser/issues/issue-24197.stderr
new file mode 100644
index 000000000..fd7015ccd
--- /dev/null
+++ b/tests/ui/parser/issues/issue-24197.stderr
@@ -0,0 +1,8 @@
+error: expected one of `:`, `;`, `=`, `@`, or `|`, found `[`
+  --> $DIR/issue-24197.rs:2:12
+   |
+LL |     let buf[0] = 0;
+   |            ^ expected one of `:`, `;`, `=`, `@`, or `|`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-24375.rs b/tests/ui/parser/issues/issue-24375.rs
new file mode 100644
index 000000000..1d128d33e
--- /dev/null
+++ b/tests/ui/parser/issues/issue-24375.rs
@@ -0,0 +1,9 @@
+static tmp : [&'static str; 2]  = ["hello", "he"];
+
+fn main() {
+    let z = "hello";
+    match z {
+        tmp[0] => {} //~ ERROR expected one of `=>`, `@`, `if`, or `|`, found `[`
+        _ => {}
+    }
+}
diff --git a/tests/ui/parser/issues/issue-24375.stderr b/tests/ui/parser/issues/issue-24375.stderr
new file mode 100644
index 000000000..7aed88768
--- /dev/null
+++ b/tests/ui/parser/issues/issue-24375.stderr
@@ -0,0 +1,8 @@
+error: expected one of `=>`, `@`, `if`, or `|`, found `[`
+  --> $DIR/issue-24375.rs:6:12
+   |
+LL |         tmp[0] => {}
+   |            ^ expected one of `=>`, `@`, `if`, or `|`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-24780.rs b/tests/ui/parser/issues/issue-24780.rs
new file mode 100644
index 000000000..017521f57
--- /dev/null
+++ b/tests/ui/parser/issues/issue-24780.rs
@@ -0,0 +1,9 @@
+// Verify that '>' is not both expected and found at the same time, as it used
+// to happen in #24780. For example, following should be an error:
+// expected one of ..., `>`, ... found `>`.
+
+fn foo() -> Vec<usize>> { //~ ERROR expected one of `!`, `+`, `::`, `where`, or `{`, found `>`
+    Vec::new()
+}
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-24780.stderr b/tests/ui/parser/issues/issue-24780.stderr
new file mode 100644
index 000000000..d9470191b
--- /dev/null
+++ b/tests/ui/parser/issues/issue-24780.stderr
@@ -0,0 +1,8 @@
+error: expected one of `!`, `+`, `::`, `where`, or `{`, found `>`
+  --> $DIR/issue-24780.rs:5:23
+   |
+LL | fn foo() -> Vec<usize>> {
+   |                       ^ expected one of `!`, `+`, `::`, `where`, or `{`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-27255.rs b/tests/ui/parser/issues/issue-27255.rs
new file mode 100644
index 000000000..d619688e1
--- /dev/null
+++ b/tests/ui/parser/issues/issue-27255.rs
@@ -0,0 +1,10 @@
+trait A {}
+
+impl A .. {}
+//~^ ERROR missing `for` in a trait impl
+//~| ERROR `impl Trait for .. {}` is an obsolete syntax
+
+impl A      usize {}
+//~^ ERROR missing `for` in a trait impl
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-27255.stderr b/tests/ui/parser/issues/issue-27255.stderr
new file mode 100644
index 000000000..391a23556
--- /dev/null
+++ b/tests/ui/parser/issues/issue-27255.stderr
@@ -0,0 +1,22 @@
+error: missing `for` in a trait impl
+  --> $DIR/issue-27255.rs:3:7
+   |
+LL | impl A .. {}
+   |       ^ help: add `for` here
+
+error: missing `for` in a trait impl
+  --> $DIR/issue-27255.rs:7:7
+   |
+LL | impl A      usize {}
+   |       ^^^^^^ help: add `for` here
+
+error: `impl Trait for .. {}` is an obsolete syntax
+  --> $DIR/issue-27255.rs:3:1
+   |
+LL | impl A .. {}
+   | ^^^^^^^^^^^^
+   |
+   = help: use `auto trait Trait {}` instead
+
+error: aborting due to 3 previous errors
+
diff --git a/tests/ui/parser/issues/issue-30318.fixed b/tests/ui/parser/issues/issue-30318.fixed
new file mode 100644
index 000000000..71fc82172
--- /dev/null
+++ b/tests/ui/parser/issues/issue-30318.fixed
@@ -0,0 +1,27 @@
+// run-rustfix
+#![allow(unused)]
+fn foo() { }
+
+/// Misplaced comment...
+//~^ ERROR expected outer doc comment
+fn bar() { } //~ NOTE the inner doc comment doesn't annotate this function
+
+#[test] //~ ERROR an inner attribute is not permitted in this context
+fn baz() { } //~ NOTE the inner attribute doesn't annotate this function
+//~^^ NOTE inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually
+
+/** Misplaced comment... */
+//~^ ERROR expected outer doc comment
+fn bat() { } //~ NOTE the inner doc comment doesn't annotate this function
+
+fn main() { }
+
+// Misplaced comment...
+//~^ ERROR expected outer doc comment
+//~| NOTE inner doc comments like this (starting with `//!` or `/*!`) can only appear before items
+//~| NOTE other attributes here
+/* Misplaced comment... */
+//~^ ERROR expected outer doc comment
+//~| NOTE this doc comment doesn't document anything
+//~| ERROR expected item after doc comment
+//~| NOTE inner doc comments like this (starting with `//!` or `/*!`) can only appear before items
diff --git a/tests/ui/parser/issues/issue-30318.rs b/tests/ui/parser/issues/issue-30318.rs
new file mode 100644
index 000000000..465dca2ff
--- /dev/null
+++ b/tests/ui/parser/issues/issue-30318.rs
@@ -0,0 +1,27 @@
+// run-rustfix
+#![allow(unused)]
+fn foo() { }
+
+//! Misplaced comment...
+//~^ ERROR expected outer doc comment
+fn bar() { } //~ NOTE the inner doc comment doesn't annotate this function
+
+#![test] //~ ERROR an inner attribute is not permitted in this context
+fn baz() { } //~ NOTE the inner attribute doesn't annotate this function
+//~^^ NOTE inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually
+
+/*! Misplaced comment... */
+//~^ ERROR expected outer doc comment
+fn bat() { } //~ NOTE the inner doc comment doesn't annotate this function
+
+fn main() { }
+
+//! Misplaced comment...
+//~^ ERROR expected outer doc comment
+//~| NOTE inner doc comments like this (starting with `//!` or `/*!`) can only appear before items
+//~| NOTE other attributes here
+/*! Misplaced comment... */
+//~^ ERROR expected outer doc comment
+//~| NOTE this doc comment doesn't document anything
+//~| ERROR expected item after doc comment
+//~| NOTE inner doc comments like this (starting with `//!` or `/*!`) can only appear before items
diff --git a/tests/ui/parser/issues/issue-30318.stderr b/tests/ui/parser/issues/issue-30318.stderr
new file mode 100644
index 000000000..c441a92ab
--- /dev/null
+++ b/tests/ui/parser/issues/issue-30318.stderr
@@ -0,0 +1,81 @@
+error[E0753]: expected outer doc comment
+  --> $DIR/issue-30318.rs:5:1
+   |
+LL | //! Misplaced comment...
+   | ^^^^^^^^^^^^^^^^^^^^^^^^
+LL |
+LL | fn bar() { }
+   | ------------ the inner doc comment doesn't annotate this function
+   |
+help: to annotate the function, change the doc comment from inner to outer style
+   |
+LL | /// Misplaced comment...
+   |   ~
+
+error: an inner attribute is not permitted in this context
+  --> $DIR/issue-30318.rs:9:1
+   |
+LL | #![test]
+   | ^^^^^^^^
+LL | fn baz() { }
+   | ------------ the inner attribute doesn't annotate this function
+   |
+   = note: inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually found at the beginning of source files
+help: to annotate the function, change the attribute from inner to outer style
+   |
+LL - #![test]
+LL + #[test]
+   |
+
+error[E0753]: expected outer doc comment
+  --> $DIR/issue-30318.rs:13:1
+   |
+LL | /*! Misplaced comment... */
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+LL |
+LL | fn bat() { }
+   | ------------ the inner doc comment doesn't annotate this function
+   |
+help: to annotate the function, change the doc comment from inner to outer style
+   |
+LL | /** Misplaced comment... */
+   |   ~
+
+error[E0753]: expected outer doc comment
+  --> $DIR/issue-30318.rs:19:1
+   |
+LL | //! Misplaced comment...
+   | ^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: inner doc comments like this (starting with `//!` or `/*!`) can only appear before items
+help: you might have meant to write a regular comment
+   |
+LL - //! Misplaced comment...
+LL + // Misplaced comment...
+   |
+
+error[E0753]: expected outer doc comment
+  --> $DIR/issue-30318.rs:23:1
+   |
+LL | /*! Misplaced comment... */
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: inner doc comments like this (starting with `//!` or `/*!`) can only appear before items
+help: you might have meant to write a regular comment
+   |
+LL - /*! Misplaced comment... */
+LL + /* Misplaced comment... */
+   |
+
+error: expected item after doc comment
+  --> $DIR/issue-30318.rs:23:1
+   |
+LL | //! Misplaced comment...
+   | ------------------------ other attributes here
+...
+LL | /*! Misplaced comment... */
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ this doc comment doesn't document anything
+
+error: aborting due to 6 previous errors
+
+For more information about this error, try `rustc --explain E0753`.
diff --git a/tests/ui/parser/issues/issue-3036.fixed b/tests/ui/parser/issues/issue-3036.fixed
new file mode 100644
index 000000000..e5d5622e6
--- /dev/null
+++ b/tests/ui/parser/issues/issue-3036.fixed
@@ -0,0 +1,7 @@
+// run-rustfix
+
+// Testing that semicolon tokens are printed correctly in errors
+
+fn main() {
+    let _x = 3; //~ ERROR: expected `;`
+}
diff --git a/tests/ui/parser/issues/issue-3036.rs b/tests/ui/parser/issues/issue-3036.rs
new file mode 100644
index 000000000..2f76fb99b
--- /dev/null
+++ b/tests/ui/parser/issues/issue-3036.rs
@@ -0,0 +1,7 @@
+// run-rustfix
+
+// Testing that semicolon tokens are printed correctly in errors
+
+fn main() {
+    let _x = 3 //~ ERROR: expected `;`
+}
diff --git a/tests/ui/parser/issues/issue-3036.stderr b/tests/ui/parser/issues/issue-3036.stderr
new file mode 100644
index 000000000..e02223931
--- /dev/null
+++ b/tests/ui/parser/issues/issue-3036.stderr
@@ -0,0 +1,10 @@
+error: expected `;`, found `}`
+  --> $DIR/issue-3036.rs:6:15
+   |
+LL |     let _x = 3
+   |               ^ help: add `;` here
+LL | }
+   | - unexpected token
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-31804.rs b/tests/ui/parser/issues/issue-31804.rs
new file mode 100644
index 000000000..d056b77cf
--- /dev/null
+++ b/tests/ui/parser/issues/issue-31804.rs
@@ -0,0 +1,6 @@
+// Test that error recovery in the parser to an EOF does not give an infinite
+// spew of errors.
+
+fn main() {
+    let
+} //~ ERROR expected pattern, found `}`
diff --git a/tests/ui/parser/issues/issue-31804.stderr b/tests/ui/parser/issues/issue-31804.stderr
new file mode 100644
index 000000000..76e68b0b3
--- /dev/null
+++ b/tests/ui/parser/issues/issue-31804.stderr
@@ -0,0 +1,8 @@
+error: expected pattern, found `}`
+  --> $DIR/issue-31804.rs:6:1
+   |
+LL | }
+   | ^ expected pattern
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-32214.rs b/tests/ui/parser/issues/issue-32214.rs
new file mode 100644
index 000000000..1379eeb58
--- /dev/null
+++ b/tests/ui/parser/issues/issue-32214.rs
@@ -0,0 +1,6 @@
+trait Trait<T> { type Item; }
+
+pub fn test<W, I: Trait<Item=(), W> >() {}
+//~^ ERROR generic arguments must come before the first constraint
+
+fn main() { }
diff --git a/tests/ui/parser/issues/issue-32214.stderr b/tests/ui/parser/issues/issue-32214.stderr
new file mode 100644
index 000000000..d0a9b5299
--- /dev/null
+++ b/tests/ui/parser/issues/issue-32214.stderr
@@ -0,0 +1,15 @@
+error: generic arguments must come before the first constraint
+  --> $DIR/issue-32214.rs:3:34
+   |
+LL | pub fn test<W, I: Trait<Item=(), W> >() {}
+   |                         -------  ^ generic argument
+   |                         |
+   |                         constraint
+   |
+help: move the constraint after the generic argument
+   |
+LL | pub fn test<W, I: Trait<W, Item = ()> >() {}
+   |                        ~~~~~~~~~~~~~~
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-32446.rs b/tests/ui/parser/issues/issue-32446.rs
new file mode 100644
index 000000000..53e519a72
--- /dev/null
+++ b/tests/ui/parser/issues/issue-32446.rs
@@ -0,0 +1,4 @@
+fn main() {}
+
+// This used to end up in an infite loop trying to bump past EOF.
+trait T { ... } //~ ERROR
diff --git a/tests/ui/parser/issues/issue-32446.stderr b/tests/ui/parser/issues/issue-32446.stderr
new file mode 100644
index 000000000..7515369aa
--- /dev/null
+++ b/tests/ui/parser/issues/issue-32446.stderr
@@ -0,0 +1,11 @@
+error: non-item in item list
+  --> $DIR/issue-32446.rs:4:11
+   |
+LL | trait T { ... }
+   |         - ^^^ - item list ends here
+   |         | |
+   |         | non-item starts here
+   |         item list starts here
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-32501.rs b/tests/ui/parser/issues/issue-32501.rs
new file mode 100644
index 000000000..500242030
--- /dev/null
+++ b/tests/ui/parser/issues/issue-32501.rs
@@ -0,0 +1,9 @@
+fn main() {
+    let a = 0;
+    let _b = 0;
+    let _ = 0;
+    let mut b = 0;
+    let mut _b = 0;
+    let mut _ = 0;
+    //~^ ERROR `mut` must be followed by a named binding
+}
diff --git a/tests/ui/parser/issues/issue-32501.stderr b/tests/ui/parser/issues/issue-32501.stderr
new file mode 100644
index 000000000..d53302449
--- /dev/null
+++ b/tests/ui/parser/issues/issue-32501.stderr
@@ -0,0 +1,10 @@
+error: `mut` must be followed by a named binding
+  --> $DIR/issue-32501.rs:7:9
+   |
+LL |     let mut _ = 0;
+   |         ^^^^^ help: remove the `mut` prefix: `_`
+   |
+   = note: `mut` may be followed by `variable` and `variable @ pattern`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-32505.rs b/tests/ui/parser/issues/issue-32505.rs
new file mode 100644
index 000000000..f31c00e5c
--- /dev/null
+++ b/tests/ui/parser/issues/issue-32505.rs
@@ -0,0 +1,5 @@
+pub fn test() {
+    foo(|_|) //~ ERROR expected expression, found `)`
+}
+
+fn main() { }
diff --git a/tests/ui/parser/issues/issue-32505.stderr b/tests/ui/parser/issues/issue-32505.stderr
new file mode 100644
index 000000000..cdd779a93
--- /dev/null
+++ b/tests/ui/parser/issues/issue-32505.stderr
@@ -0,0 +1,8 @@
+error: expected expression, found `)`
+  --> $DIR/issue-32505.rs:2:12
+   |
+LL |     foo(|_|)
+   |            ^ expected expression
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-33262.rs b/tests/ui/parser/issues/issue-33262.rs
new file mode 100644
index 000000000..3a612f95c
--- /dev/null
+++ b/tests/ui/parser/issues/issue-33262.rs
@@ -0,0 +1,6 @@
+// Issue #33262
+
+pub fn main() {
+    for i in 0..a as { }
+    //~^ ERROR expected type, found `{`
+}
diff --git a/tests/ui/parser/issues/issue-33262.stderr b/tests/ui/parser/issues/issue-33262.stderr
new file mode 100644
index 000000000..2aff32839
--- /dev/null
+++ b/tests/ui/parser/issues/issue-33262.stderr
@@ -0,0 +1,8 @@
+error: expected type, found `{`
+  --> $DIR/issue-33262.rs:4:22
+   |
+LL |     for i in 0..a as { }
+   |                      ^ expected type
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-33413.rs b/tests/ui/parser/issues/issue-33413.rs
new file mode 100644
index 000000000..7291732ce
--- /dev/null
+++ b/tests/ui/parser/issues/issue-33413.rs
@@ -0,0 +1,9 @@
+struct S;
+
+impl S {
+    fn f(*, a: u8) -> u8 {}
+    //~^ ERROR expected parameter name, found `*`
+    //~| ERROR mismatched types
+}
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-33413.stderr b/tests/ui/parser/issues/issue-33413.stderr
new file mode 100644
index 000000000..b7250f3b0
--- /dev/null
+++ b/tests/ui/parser/issues/issue-33413.stderr
@@ -0,0 +1,22 @@
+error: expected parameter name, found `*`
+  --> $DIR/issue-33413.rs:4:10
+   |
+LL |     fn f(*, a: u8) -> u8 {}
+   |          ^ expected parameter name
+
+error[E0308]: mismatched types
+  --> $DIR/issue-33413.rs:4:23
+   |
+LL |     fn f(*, a: u8) -> u8 {}
+   |        -              ^^ expected `u8`, found `()`
+   |        |
+   |        implicitly returns `()` as its body has no tail or `return` expression
+   |
+help: consider returning the local binding `a`
+   |
+LL |     fn f(*, a: u8) -> u8 { a }
+   |                            +
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/parser/issues/issue-33418.fixed b/tests/ui/parser/issues/issue-33418.fixed
new file mode 100644
index 000000000..ed885ae14
--- /dev/null
+++ b/tests/ui/parser/issues/issue-33418.fixed
@@ -0,0 +1,19 @@
+// run-rustfix
+
+trait Tr {}
+//~^ ERROR negative bounds are not supported
+trait Tr2: SuperA {}
+//~^ ERROR negative bounds are not supported
+trait Tr3: SuperB {}
+//~^ ERROR negative bounds are not supported
+trait Tr4: SuperB + SuperD {}
+//~^ ERROR negative bounds are not supported
+trait Tr5 {}
+//~^ ERROR negative bounds are not supported
+
+trait SuperA {}
+trait SuperB {}
+trait SuperC {}
+trait SuperD {}
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-33418.rs b/tests/ui/parser/issues/issue-33418.rs
new file mode 100644
index 000000000..9934284ab
--- /dev/null
+++ b/tests/ui/parser/issues/issue-33418.rs
@@ -0,0 +1,21 @@
+// run-rustfix
+
+trait Tr: !SuperA {}
+//~^ ERROR negative bounds are not supported
+trait Tr2: SuperA + !SuperB {}
+//~^ ERROR negative bounds are not supported
+trait Tr3: !SuperA + SuperB {}
+//~^ ERROR negative bounds are not supported
+trait Tr4: !SuperA + SuperB
+    + !SuperC + SuperD {}
+//~^ ERROR negative bounds are not supported
+trait Tr5: !SuperA
+    + !SuperB {}
+//~^ ERROR negative bounds are not supported
+
+trait SuperA {}
+trait SuperB {}
+trait SuperC {}
+trait SuperD {}
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-33418.stderr b/tests/ui/parser/issues/issue-33418.stderr
new file mode 100644
index 000000000..9a8733e89
--- /dev/null
+++ b/tests/ui/parser/issues/issue-33418.stderr
@@ -0,0 +1,36 @@
+error: negative bounds are not supported
+  --> $DIR/issue-33418.rs:3:9
+   |
+LL | trait Tr: !SuperA {}
+   |         ^^^^^^^^^ negative bounds are not supported
+
+error: negative bounds are not supported
+  --> $DIR/issue-33418.rs:5:19
+   |
+LL | trait Tr2: SuperA + !SuperB {}
+   |                   ^^^^^^^^^ negative bounds are not supported
+
+error: negative bounds are not supported
+  --> $DIR/issue-33418.rs:7:10
+   |
+LL | trait Tr3: !SuperA + SuperB {}
+   |          ^^^^^^^^^ negative bounds are not supported
+
+error: negative bounds are not supported
+  --> $DIR/issue-33418.rs:9:10
+   |
+LL | trait Tr4: !SuperA + SuperB
+   |          ^^^^^^^^^
+LL |     + !SuperC + SuperD {}
+   |     ^^^^^^^^^ negative bounds are not supported
+
+error: negative bounds are not supported
+  --> $DIR/issue-33418.rs:12:10
+   |
+LL | trait Tr5: !SuperA
+   |          ^^^^^^^^^
+LL |     + !SuperB {}
+   |     ^^^^^^^^^ negative bounds are not supported
+
+error: aborting due to 5 previous errors
+
diff --git a/tests/ui/parser/issues/issue-33455.rs b/tests/ui/parser/issues/issue-33455.rs
new file mode 100644
index 000000000..6dff63f5c
--- /dev/null
+++ b/tests/ui/parser/issues/issue-33455.rs
@@ -0,0 +1 @@
+use foo.bar; //~ ERROR expected one of `::`, `;`, or `as`, found `.`
diff --git a/tests/ui/parser/issues/issue-33455.stderr b/tests/ui/parser/issues/issue-33455.stderr
new file mode 100644
index 000000000..c535ef23b
--- /dev/null
+++ b/tests/ui/parser/issues/issue-33455.stderr
@@ -0,0 +1,8 @@
+error: expected one of `::`, `;`, or `as`, found `.`
+  --> $DIR/issue-33455.rs:1:8
+   |
+LL | use foo.bar;
+   |        ^ expected one of `::`, `;`, or `as`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-34222-1.rs b/tests/ui/parser/issues/issue-34222-1.rs
new file mode 100644
index 000000000..d36dddc97
--- /dev/null
+++ b/tests/ui/parser/issues/issue-34222-1.rs
@@ -0,0 +1,3 @@
+fn main() {
+    /// comment //~ ERROR found a documentation comment that doesn't document anything
+}
diff --git a/tests/ui/parser/issues/issue-34222-1.stderr b/tests/ui/parser/issues/issue-34222-1.stderr
new file mode 100644
index 000000000..b451484ba
--- /dev/null
+++ b/tests/ui/parser/issues/issue-34222-1.stderr
@@ -0,0 +1,11 @@
+error[E0585]: found a documentation comment that doesn't document anything
+  --> $DIR/issue-34222-1.rs:2:5
+   |
+LL |     /// comment
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = help: doc comments must come before what they document, if a comment was intended use `//`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0585`.
diff --git a/tests/ui/parser/issues/issue-34255-1.rs b/tests/ui/parser/issues/issue-34255-1.rs
new file mode 100644
index 000000000..c70cd8b50
--- /dev/null
+++ b/tests/ui/parser/issues/issue-34255-1.rs
@@ -0,0 +1,10 @@
+enum Test {
+    Drill {
+        field: i32,
+    }
+}
+
+fn main() {
+    Test::Drill(field: 42);
+    //~^ ERROR invalid `struct` delimiters or `fn` call arguments
+}
diff --git a/tests/ui/parser/issues/issue-34255-1.stderr b/tests/ui/parser/issues/issue-34255-1.stderr
new file mode 100644
index 000000000..0e2b0d62e
--- /dev/null
+++ b/tests/ui/parser/issues/issue-34255-1.stderr
@@ -0,0 +1,18 @@
+error: invalid `struct` delimiters or `fn` call arguments
+  --> $DIR/issue-34255-1.rs:8:5
+   |
+LL |     Test::Drill(field: 42);
+   |     ^^^^^^^^^^^^^^^^^^^^^^
+   |
+help: if `Test::Drill` is a struct, use braces as delimiters
+   |
+LL |     Test::Drill { field: 42 };
+   |                 ~           ~
+help: if `Test::Drill` is a function, use the arguments directly
+   |
+LL -     Test::Drill(field: 42);
+LL +     Test::Drill(42);
+   |
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-35813-postfix-after-cast.rs b/tests/ui/parser/issues/issue-35813-postfix-after-cast.rs
new file mode 100644
index 000000000..7bd4b3a16
--- /dev/null
+++ b/tests/ui/parser/issues/issue-35813-postfix-after-cast.rs
@@ -0,0 +1,171 @@
+// edition:2018
+#![crate_type = "lib"]
+#![feature(type_ascription)]
+use std::future::Future;
+use std::pin::Pin;
+
+// This tests the parser for "x as Y[z]". It errors, but we want to give useful
+// errors and parse such that further code gives useful errors.
+pub fn index_after_as_cast() {
+    vec![1, 2, 3] as Vec<i32>[0];
+    //~^ ERROR: cast cannot be followed by indexing
+    vec![1, 2, 3]: Vec<i32>[0];
+    //~^ ERROR: type ascription cannot be followed by indexing
+}
+
+pub fn index_after_cast_to_index() {
+    (&[0]) as &[i32][0];
+    //~^ ERROR: cast cannot be followed by indexing
+    (&[0i32]): &[i32; 1][0];
+    //~^ ERROR: type ascription cannot be followed by indexing
+}
+
+pub fn cast_after_cast() {
+    if 5u64 as i32 as u16 == 0u16 {
+
+    }
+    if 5u64: u64: u64 == 0u64 {
+
+    }
+    let _ = 5u64: u64: u64 as u8 as i8 == 9i8;
+    let _ = 0i32: i32: i32;
+    let _ = 0 as i32: i32;
+    let _ = 0i32: i32 as i32;
+    let _ = 0 as i32 as i32;
+    let _ = 0i32: i32: i32 as u32 as i32;
+}
+
+pub fn cast_cast_method_call() {
+    let _ = 0i32: i32: i32.count_ones();
+    //~^ ERROR: type ascription cannot be followed by a method call
+    let _ = 0 as i32: i32.count_ones();
+    //~^ ERROR: type ascription cannot be followed by a method call
+    let _ = 0i32: i32 as i32.count_ones();
+    //~^ ERROR: cast cannot be followed by a method call
+    let _ = 0 as i32 as i32.count_ones();
+    //~^ ERROR: cast cannot be followed by a method call
+    let _ = 0i32: i32: i32 as u32 as i32.count_ones();
+    //~^ ERROR: cast cannot be followed by a method call
+    let _ = 0i32: i32.count_ones(): u32;
+    //~^ ERROR: type ascription cannot be followed by a method call
+    let _ = 0 as i32.count_ones(): u32;
+    //~^ ERROR: cast cannot be followed by a method call
+    let _ = 0i32: i32.count_ones() as u32;
+    //~^ ERROR: type ascription cannot be followed by a method call
+    let _ = 0 as i32.count_ones() as u32;
+    //~^ ERROR: cast cannot be followed by a method call
+    let _ = 0i32: i32: i32.count_ones() as u32 as i32;
+    //~^ ERROR: type ascription cannot be followed by a method call
+}
+
+pub fn multiline_error() {
+    let _ = 0
+        as i32
+        .count_ones();
+    //~^^^ ERROR: cast cannot be followed by a method call
+}
+
+// this tests that the precedence for `!x as Y.Z` is still what we expect
+pub fn precedence() {
+    let x: i32 = &vec![1, 2, 3] as &Vec<i32>[0];
+    //~^ ERROR: cast cannot be followed by indexing
+}
+
+pub fn method_calls() {
+    0 as i32.max(0);
+    //~^ ERROR: cast cannot be followed by a method call
+    0: i32.max(0);
+    //~^ ERROR: type ascription cannot be followed by a method call
+}
+
+pub fn complex() {
+    let _ = format!(
+        "{} and {}",
+        if true { 33 } else { 44 } as i32.max(0),
+        //~^ ERROR: cast cannot be followed by a method call
+        if true { 33 } else { 44 }: i32.max(0)
+        //~^ ERROR: type ascription cannot be followed by a method call
+    );
+}
+
+pub fn in_condition() {
+    if 5u64 as i32.max(0) == 0 {
+        //~^ ERROR: cast cannot be followed by a method call
+    }
+    if 5u64: u64.max(0) == 0 {
+        //~^ ERROR: type ascription cannot be followed by a method call
+    }
+}
+
+pub fn inside_block() {
+    let _ = if true {
+        5u64 as u32.max(0) == 0
+        //~^ ERROR: cast cannot be followed by a method call
+    } else { false };
+    let _ = if true {
+        5u64: u64.max(0) == 0
+        //~^ ERROR: type ascription cannot be followed by a method call
+    } else { false };
+}
+
+static bar: &[i32] = &(&[1,2,3] as &[i32][0..1]);
+//~^ ERROR: cast cannot be followed by indexing
+
+static bar2: &[i32] = &(&[1i32,2,3]: &[i32; 3][0..1]);
+//~^ ERROR: type ascription cannot be followed by indexing
+
+
+pub fn cast_then_try() -> Result<u64,u64> {
+    Err(0u64) as Result<u64,u64>?;
+    //~^ ERROR: cast cannot be followed by `?`
+    Err(0u64): Result<u64,u64>?;
+    //~^ ERROR: type ascription cannot be followed by `?`
+    Ok(1)
+}
+
+
+pub fn cast_then_call() {
+    type F = fn(u8);
+    // type ascription won't actually do [unique drop fn type] -> fn(u8) casts.
+    let drop_ptr = drop as fn(u8);
+    drop as F();
+    //~^ ERROR: parenthesized type parameters may only be used with a `Fn` trait [E0214]
+    drop_ptr: F();
+    //~^ ERROR: parenthesized type parameters may only be used with a `Fn` trait [E0214]
+}
+
+pub fn cast_to_fn_should_work() {
+    let drop_ptr = drop as fn(u8);
+    drop as fn(u8);
+    drop_ptr: fn(u8);
+}
+
+pub fn parens_after_cast_error() {
+    let drop_ptr = drop as fn(u8);
+    drop as fn(u8)(0);
+    //~^ ERROR: cast cannot be followed by a function call
+    drop_ptr: fn(u8)(0);
+    //~^ ERROR: type ascription cannot be followed by a function call
+}
+
+pub async fn cast_then_await() {
+    Box::pin(noop()) as Pin<Box<dyn Future<Output = ()>>>.await;
+    //~^ ERROR: cast cannot be followed by `.await`
+
+    Box::pin(noop()): Pin<Box<_>>.await;
+    //~^ ERROR: type ascription cannot be followed by `.await`
+}
+
+pub async fn noop() {}
+
+#[derive(Default)]
+pub struct Foo {
+    pub bar: u32,
+}
+
+pub fn struct_field() {
+    Foo::default() as Foo.bar;
+    //~^ ERROR: cannot be followed by a field access
+    Foo::default(): Foo.bar;
+    //~^ ERROR: type ascription cannot be followed by a field access
+}
diff --git a/tests/ui/parser/issues/issue-35813-postfix-after-cast.stderr b/tests/ui/parser/issues/issue-35813-postfix-after-cast.stderr
new file mode 100644
index 000000000..0c328bde2
--- /dev/null
+++ b/tests/ui/parser/issues/issue-35813-postfix-after-cast.stderr
@@ -0,0 +1,472 @@
+error: cast cannot be followed by indexing
+  --> $DIR/issue-35813-postfix-after-cast.rs:10:5
+   |
+LL |     vec![1, 2, 3] as Vec<i32>[0];
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+help: try surrounding the expression in parentheses
+   |
+LL |     (vec![1, 2, 3] as Vec<i32>)[0];
+   |     +                         +
+
+error: type ascription cannot be followed by indexing
+  --> $DIR/issue-35813-postfix-after-cast.rs:12:5
+   |
+LL |     vec![1, 2, 3]: Vec<i32>[0];
+   |     ^^^^^^^^^^^^^^^^^^^^^^^
+   |
+help: try surrounding the expression in parentheses
+   |
+LL |     (vec![1, 2, 3]: Vec<i32>)[0];
+   |     +                       +
+help: alternatively, remove the type ascription
+   |
+LL -     vec![1, 2, 3]: Vec<i32>[0];
+LL +     vec![1, 2, 3][0];
+   |
+
+error: cast cannot be followed by indexing
+  --> $DIR/issue-35813-postfix-after-cast.rs:17:5
+   |
+LL |     (&[0]) as &[i32][0];
+   |     ^^^^^^^^^^^^^^^^
+   |
+help: try surrounding the expression in parentheses
+   |
+LL |     ((&[0]) as &[i32])[0];
+   |     +                +
+
+error: type ascription cannot be followed by indexing
+  --> $DIR/issue-35813-postfix-after-cast.rs:19:5
+   |
+LL |     (&[0i32]): &[i32; 1][0];
+   |     ^^^^^^^^^^^^^^^^^^^^
+   |
+help: try surrounding the expression in parentheses
+   |
+LL |     ((&[0i32]): &[i32; 1])[0];
+   |     +                    +
+help: alternatively, remove the type ascription
+   |
+LL -     (&[0i32]): &[i32; 1][0];
+LL +     (&[0i32])[0];
+   |
+
+error: type ascription cannot be followed by a method call
+  --> $DIR/issue-35813-postfix-after-cast.rs:39:13
+   |
+LL |     let _ = 0i32: i32: i32.count_ones();
+   |             ^^^^^^^^^^^^^^
+   |
+help: try surrounding the expression in parentheses
+   |
+LL |     let _ = (0i32: i32: i32).count_ones();
+   |             +              +
+help: alternatively, remove the type ascription
+   |
+LL -     let _ = 0i32: i32: i32.count_ones();
+LL +     let _ = 0i32: i32.count_ones();
+   |
+
+error: type ascription cannot be followed by a method call
+  --> $DIR/issue-35813-postfix-after-cast.rs:41:13
+   |
+LL |     let _ = 0 as i32: i32.count_ones();
+   |             ^^^^^^^^^^^^^
+   |
+help: try surrounding the expression in parentheses
+   |
+LL |     let _ = (0 as i32: i32).count_ones();
+   |             +             +
+help: alternatively, remove the type ascription
+   |
+LL -     let _ = 0 as i32: i32.count_ones();
+LL +     let _ = 0 as i32.count_ones();
+   |
+
+error: cast cannot be followed by a method call
+  --> $DIR/issue-35813-postfix-after-cast.rs:43:13
+   |
+LL |     let _ = 0i32: i32 as i32.count_ones();
+   |             ^^^^^^^^^^^^^^^^
+   |
+help: try surrounding the expression in parentheses
+   |
+LL |     let _ = (0i32: i32 as i32).count_ones();
+   |             +                +
+
+error: cast cannot be followed by a method call
+  --> $DIR/issue-35813-postfix-after-cast.rs:45:13
+   |
+LL |     let _ = 0 as i32 as i32.count_ones();
+   |             ^^^^^^^^^^^^^^^
+   |
+help: try surrounding the expression in parentheses
+   |
+LL |     let _ = (0 as i32 as i32).count_ones();
+   |             +               +
+
+error: cast cannot be followed by a method call
+  --> $DIR/issue-35813-postfix-after-cast.rs:47:13
+   |
+LL |     let _ = 0i32: i32: i32 as u32 as i32.count_ones();
+   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+help: try surrounding the expression in parentheses
+   |
+LL |     let _ = (0i32: i32: i32 as u32 as i32).count_ones();
+   |             +                            +
+
+error: type ascription cannot be followed by a method call
+  --> $DIR/issue-35813-postfix-after-cast.rs:49:13
+   |
+LL |     let _ = 0i32: i32.count_ones(): u32;
+   |             ^^^^^^^^^
+   |
+help: try surrounding the expression in parentheses
+   |
+LL |     let _ = (0i32: i32).count_ones(): u32;
+   |             +         +
+help: alternatively, remove the type ascription
+   |
+LL -     let _ = 0i32: i32.count_ones(): u32;
+LL +     let _ = 0i32.count_ones(): u32;
+   |
+
+error: cast cannot be followed by a method call
+  --> $DIR/issue-35813-postfix-after-cast.rs:51:13
+   |
+LL |     let _ = 0 as i32.count_ones(): u32;
+   |             ^^^^^^^^
+   |
+help: try surrounding the expression in parentheses
+   |
+LL |     let _ = (0 as i32).count_ones(): u32;
+   |             +        +
+
+error: type ascription cannot be followed by a method call
+  --> $DIR/issue-35813-postfix-after-cast.rs:53:13
+   |
+LL |     let _ = 0i32: i32.count_ones() as u32;
+   |             ^^^^^^^^^
+   |
+help: try surrounding the expression in parentheses
+   |
+LL |     let _ = (0i32: i32).count_ones() as u32;
+   |             +         +
+help: alternatively, remove the type ascription
+   |
+LL -     let _ = 0i32: i32.count_ones() as u32;
+LL +     let _ = 0i32.count_ones() as u32;
+   |
+
+error: cast cannot be followed by a method call
+  --> $DIR/issue-35813-postfix-after-cast.rs:55:13
+   |
+LL |     let _ = 0 as i32.count_ones() as u32;
+   |             ^^^^^^^^
+   |
+help: try surrounding the expression in parentheses
+   |
+LL |     let _ = (0 as i32).count_ones() as u32;
+   |             +        +
+
+error: type ascription cannot be followed by a method call
+  --> $DIR/issue-35813-postfix-after-cast.rs:57:13
+   |
+LL |     let _ = 0i32: i32: i32.count_ones() as u32 as i32;
+   |             ^^^^^^^^^^^^^^
+   |
+help: try surrounding the expression in parentheses
+   |
+LL |     let _ = (0i32: i32: i32).count_ones() as u32 as i32;
+   |             +              +
+help: alternatively, remove the type ascription
+   |
+LL -     let _ = 0i32: i32: i32.count_ones() as u32 as i32;
+LL +     let _ = 0i32: i32.count_ones() as u32 as i32;
+   |
+
+error: cast cannot be followed by a method call
+  --> $DIR/issue-35813-postfix-after-cast.rs:62:13
+   |
+LL |       let _ = 0
+   |  _____________^
+LL | |         as i32
+   | |______________^
+   |
+help: try surrounding the expression in parentheses
+   |
+LL ~     let _ = (0
+LL ~         as i32)
+   |
+
+error: cast cannot be followed by indexing
+  --> $DIR/issue-35813-postfix-after-cast.rs:70:18
+   |
+LL |     let x: i32 = &vec![1, 2, 3] as &Vec<i32>[0];
+   |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+help: try surrounding the expression in parentheses
+   |
+LL |     let x: i32 = (&vec![1, 2, 3] as &Vec<i32>)[0];
+   |                  +                           +
+
+error: cast cannot be followed by a method call
+  --> $DIR/issue-35813-postfix-after-cast.rs:75:5
+   |
+LL |     0 as i32.max(0);
+   |     ^^^^^^^^
+   |
+help: try surrounding the expression in parentheses
+   |
+LL |     (0 as i32).max(0);
+   |     +        +
+
+error: type ascription cannot be followed by a method call
+  --> $DIR/issue-35813-postfix-after-cast.rs:77:5
+   |
+LL |     0: i32.max(0);
+   |     ^^^^^^
+   |
+help: try surrounding the expression in parentheses
+   |
+LL |     (0: i32).max(0);
+   |     +      +
+help: alternatively, remove the type ascription
+   |
+LL -     0: i32.max(0);
+LL +     0.max(0);
+   |
+
+error: cast cannot be followed by a method call
+  --> $DIR/issue-35813-postfix-after-cast.rs:92:8
+   |
+LL |     if 5u64 as i32.max(0) == 0 {
+   |        ^^^^^^^^^^^
+   |
+help: try surrounding the expression in parentheses
+   |
+LL |     if (5u64 as i32).max(0) == 0 {
+   |        +           +
+
+error: type ascription cannot be followed by a method call
+  --> $DIR/issue-35813-postfix-after-cast.rs:95:8
+   |
+LL |     if 5u64: u64.max(0) == 0 {
+   |        ^^^^^^^^^
+   |
+help: try surrounding the expression in parentheses
+   |
+LL |     if (5u64: u64).max(0) == 0 {
+   |        +         +
+help: alternatively, remove the type ascription
+   |
+LL -     if 5u64: u64.max(0) == 0 {
+LL +     if 5u64.max(0) == 0 {
+   |
+
+error: cast cannot be followed by a method call
+  --> $DIR/issue-35813-postfix-after-cast.rs:102:9
+   |
+LL |         5u64 as u32.max(0) == 0
+   |         ^^^^^^^^^^^
+   |
+help: try surrounding the expression in parentheses
+   |
+LL |         (5u64 as u32).max(0) == 0
+   |         +           +
+
+error: type ascription cannot be followed by a method call
+  --> $DIR/issue-35813-postfix-after-cast.rs:106:9
+   |
+LL |         5u64: u64.max(0) == 0
+   |         ^^^^^^^^^
+   |
+help: try surrounding the expression in parentheses
+   |
+LL |         (5u64: u64).max(0) == 0
+   |         +         +
+help: alternatively, remove the type ascription
+   |
+LL -         5u64: u64.max(0) == 0
+LL +         5u64.max(0) == 0
+   |
+
+error: cast cannot be followed by indexing
+  --> $DIR/issue-35813-postfix-after-cast.rs:111:24
+   |
+LL | static bar: &[i32] = &(&[1,2,3] as &[i32][0..1]);
+   |                        ^^^^^^^^^^^^^^^^^^
+   |
+help: try surrounding the expression in parentheses
+   |
+LL | static bar: &[i32] = &((&[1,2,3] as &[i32])[0..1]);
+   |                        +                  +
+
+error: type ascription cannot be followed by indexing
+  --> $DIR/issue-35813-postfix-after-cast.rs:114:25
+   |
+LL | static bar2: &[i32] = &(&[1i32,2,3]: &[i32; 3][0..1]);
+   |                         ^^^^^^^^^^^^^^^^^^^^^^
+   |
+help: try surrounding the expression in parentheses
+   |
+LL | static bar2: &[i32] = &((&[1i32,2,3]: &[i32; 3])[0..1]);
+   |                         +                      +
+help: alternatively, remove the type ascription
+   |
+LL - static bar2: &[i32] = &(&[1i32,2,3]: &[i32; 3][0..1]);
+LL + static bar2: &[i32] = &(&[1i32,2,3][0..1]);
+   |
+
+error: cast cannot be followed by `?`
+  --> $DIR/issue-35813-postfix-after-cast.rs:119:5
+   |
+LL |     Err(0u64) as Result<u64,u64>?;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+help: try surrounding the expression in parentheses
+   |
+LL |     (Err(0u64) as Result<u64,u64>)?;
+   |     +                            +
+
+error: type ascription cannot be followed by `?`
+  --> $DIR/issue-35813-postfix-after-cast.rs:121:5
+   |
+LL |     Err(0u64): Result<u64,u64>?;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+help: try surrounding the expression in parentheses
+   |
+LL |     (Err(0u64): Result<u64,u64>)?;
+   |     +                          +
+help: alternatively, remove the type ascription
+   |
+LL -     Err(0u64): Result<u64,u64>?;
+LL +     Err(0u64)?;
+   |
+
+error: cast cannot be followed by a function call
+  --> $DIR/issue-35813-postfix-after-cast.rs:145:5
+   |
+LL |     drop as fn(u8)(0);
+   |     ^^^^^^^^^^^^^^
+   |
+help: try surrounding the expression in parentheses
+   |
+LL |     (drop as fn(u8))(0);
+   |     +              +
+
+error: type ascription cannot be followed by a function call
+  --> $DIR/issue-35813-postfix-after-cast.rs:147:5
+   |
+LL |     drop_ptr: fn(u8)(0);
+   |     ^^^^^^^^^^^^^^^^
+   |
+help: try surrounding the expression in parentheses
+   |
+LL |     (drop_ptr: fn(u8))(0);
+   |     +                +
+help: alternatively, remove the type ascription
+   |
+LL -     drop_ptr: fn(u8)(0);
+LL +     drop_ptr(0);
+   |
+
+error: cast cannot be followed by `.await`
+  --> $DIR/issue-35813-postfix-after-cast.rs:152:5
+   |
+LL |     Box::pin(noop()) as Pin<Box<dyn Future<Output = ()>>>.await;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+help: try surrounding the expression in parentheses
+   |
+LL |     (Box::pin(noop()) as Pin<Box<dyn Future<Output = ()>>>).await;
+   |     +                                                     +
+
+error: type ascription cannot be followed by `.await`
+  --> $DIR/issue-35813-postfix-after-cast.rs:155:5
+   |
+LL |     Box::pin(noop()): Pin<Box<_>>.await;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+help: try surrounding the expression in parentheses
+   |
+LL |     (Box::pin(noop()): Pin<Box<_>>).await;
+   |     +                             +
+help: alternatively, remove the type ascription
+   |
+LL -     Box::pin(noop()): Pin<Box<_>>.await;
+LL +     Box::pin(noop()).await;
+   |
+
+error: cast cannot be followed by a field access
+  --> $DIR/issue-35813-postfix-after-cast.rs:167:5
+   |
+LL |     Foo::default() as Foo.bar;
+   |     ^^^^^^^^^^^^^^^^^^^^^
+   |
+help: try surrounding the expression in parentheses
+   |
+LL |     (Foo::default() as Foo).bar;
+   |     +                     +
+
+error: type ascription cannot be followed by a field access
+  --> $DIR/issue-35813-postfix-after-cast.rs:169:5
+   |
+LL |     Foo::default(): Foo.bar;
+   |     ^^^^^^^^^^^^^^^^^^^
+   |
+help: try surrounding the expression in parentheses
+   |
+LL |     (Foo::default(): Foo).bar;
+   |     +                   +
+help: alternatively, remove the type ascription
+   |
+LL -     Foo::default(): Foo.bar;
+LL +     Foo::default().bar;
+   |
+
+error: cast cannot be followed by a method call
+  --> $DIR/issue-35813-postfix-after-cast.rs:84:9
+   |
+LL |         if true { 33 } else { 44 } as i32.max(0),
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+help: try surrounding the expression in parentheses
+   |
+LL |         (if true { 33 } else { 44 } as i32).max(0),
+   |         +                                 +
+
+error: type ascription cannot be followed by a method call
+  --> $DIR/issue-35813-postfix-after-cast.rs:86:9
+   |
+LL |         if true { 33 } else { 44 }: i32.max(0)
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+help: try surrounding the expression in parentheses
+   |
+LL |         (if true { 33 } else { 44 }: i32).max(0)
+   |         +                               +
+help: alternatively, remove the type ascription
+   |
+LL -         if true { 33 } else { 44 }: i32.max(0)
+LL +         if true { 33 } else { 44 }.max(0)
+   |
+
+error[E0214]: parenthesized type parameters may only be used with a `Fn` trait
+  --> $DIR/issue-35813-postfix-after-cast.rs:131:13
+   |
+LL |     drop as F();
+   |             ^^^ only `Fn` traits may use parentheses
+
+error[E0214]: parenthesized type parameters may only be used with a `Fn` trait
+  --> $DIR/issue-35813-postfix-after-cast.rs:133:15
+   |
+LL |     drop_ptr: F();
+   |               ^^^ only `Fn` traits may use parentheses
+
+error: aborting due to 36 previous errors
+
+For more information about this error, try `rustc --explain E0214`.
diff --git a/tests/ui/parser/issues/issue-41155.rs b/tests/ui/parser/issues/issue-41155.rs
new file mode 100644
index 000000000..5a7488e6f
--- /dev/null
+++ b/tests/ui/parser/issues/issue-41155.rs
@@ -0,0 +1,7 @@
+struct S;
+
+impl S {
+    pub //~ ERROR visibility `pub` is not followed by an item
+} //~ ERROR non-item in item list
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-41155.stderr b/tests/ui/parser/issues/issue-41155.stderr
new file mode 100644
index 000000000..8491afae2
--- /dev/null
+++ b/tests/ui/parser/issues/issue-41155.stderr
@@ -0,0 +1,22 @@
+error: visibility `pub` is not followed by an item
+  --> $DIR/issue-41155.rs:4:5
+   |
+LL |     pub
+   |     ^^^ the visibility
+   |
+   = help: you likely meant to define an item, e.g., `pub fn foo() {}`
+
+error: non-item in item list
+  --> $DIR/issue-41155.rs:5:1
+   |
+LL | impl S {
+   |        - item list starts here
+LL |     pub
+LL | }
+   | ^
+   | |
+   | non-item starts here
+   | item list ends here
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/issues/issue-43196.rs b/tests/ui/parser/issues/issue-43196.rs
new file mode 100644
index 000000000..0eefa01ce
--- /dev/null
+++ b/tests/ui/parser/issues/issue-43196.rs
@@ -0,0 +1,6 @@
+fn main() {
+    |
+}
+//~^ ERROR expected `|`, found `}`
+|
+//~^ ERROR expected item, found `|`
diff --git a/tests/ui/parser/issues/issue-43196.stderr b/tests/ui/parser/issues/issue-43196.stderr
new file mode 100644
index 000000000..4f7ed5cc6
--- /dev/null
+++ b/tests/ui/parser/issues/issue-43196.stderr
@@ -0,0 +1,16 @@
+error: expected `|`, found `}`
+  --> $DIR/issue-43196.rs:3:1
+   |
+LL |     |
+   |      - expected `|`
+LL | }
+   | ^ unexpected token
+
+error: expected item, found `|`
+  --> $DIR/issue-43196.rs:5:1
+   |
+LL | |
+   | ^ expected item
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/issues/issue-43692.rs b/tests/ui/parser/issues/issue-43692.rs
new file mode 100644
index 000000000..baf8bafb8
--- /dev/null
+++ b/tests/ui/parser/issues/issue-43692.rs
@@ -0,0 +1,3 @@
+fn main() {
+    '\u{_10FFFF}'; //~ ERROR invalid start of unicode escape
+}
diff --git a/tests/ui/parser/issues/issue-43692.stderr b/tests/ui/parser/issues/issue-43692.stderr
new file mode 100644
index 000000000..baf998035
--- /dev/null
+++ b/tests/ui/parser/issues/issue-43692.stderr
@@ -0,0 +1,8 @@
+error: invalid start of unicode escape: `_`
+  --> $DIR/issue-43692.rs:2:9
+   |
+LL |     '\u{_10FFFF}';
+   |         ^ invalid start of unicode escape
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-44021.rs b/tests/ui/parser/issues/issue-44021.rs
new file mode 100644
index 000000000..0b9558cc9
--- /dev/null
+++ b/tests/ui/parser/issues/issue-44021.rs
@@ -0,0 +1,6 @@
+struct MyStruct;
+impl MyStruct {
+    fn f() {|x, y} //~ ERROR expected one of `:`, `@`, or `|`, found `}`
+}
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-44021.stderr b/tests/ui/parser/issues/issue-44021.stderr
new file mode 100644
index 000000000..b888cd989
--- /dev/null
+++ b/tests/ui/parser/issues/issue-44021.stderr
@@ -0,0 +1,8 @@
+error: expected one of `:`, `@`, or `|`, found `}`
+  --> $DIR/issue-44021.rs:3:18
+   |
+LL |     fn f() {|x, y}
+   |                  ^ expected one of `:`, `@`, or `|`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-44406.rs b/tests/ui/parser/issues/issue-44406.rs
new file mode 100644
index 000000000..a5b7e83a0
--- /dev/null
+++ b/tests/ui/parser/issues/issue-44406.rs
@@ -0,0 +1,10 @@
+macro_rules! foo {
+    ($rest: tt) => {
+        bar(baz: $rest) //~ ERROR invalid `struct` delimiters or `fn` call arguments
+    }
+}
+
+fn main() {
+    foo!(true);
+    //~^ ERROR expected identifier, found keyword
+}
diff --git a/tests/ui/parser/issues/issue-44406.stderr b/tests/ui/parser/issues/issue-44406.stderr
new file mode 100644
index 000000000..1f0c1ea4c
--- /dev/null
+++ b/tests/ui/parser/issues/issue-44406.stderr
@@ -0,0 +1,33 @@
+error: expected identifier, found keyword `true`
+  --> $DIR/issue-44406.rs:8:10
+   |
+LL |     foo!(true);
+   |          ^^^^ expected identifier, found keyword
+   |
+help: escape `true` to use it as an identifier
+   |
+LL |     foo!(r#true);
+   |          ++
+
+error: invalid `struct` delimiters or `fn` call arguments
+  --> $DIR/issue-44406.rs:3:9
+   |
+LL |         bar(baz: $rest)
+   |         ^^^^^^^^^^^^^^^
+...
+LL |     foo!(true);
+   |     ---------- in this macro invocation
+   |
+   = note: this error originates in the macro `foo` (in Nightly builds, run with -Z macro-backtrace for more info)
+help: if `bar` is a struct, use braces as delimiters
+   |
+LL |         bar {  }
+   |             ~
+help: if `bar` is a function, use the arguments directly
+   |
+LL -         bar(baz: $rest)
+LL +         bar(: $rest)
+   |
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/issues/issue-45296.rs b/tests/ui/parser/issues/issue-45296.rs
new file mode 100644
index 000000000..d3a97e89f
--- /dev/null
+++ b/tests/ui/parser/issues/issue-45296.rs
@@ -0,0 +1,6 @@
+fn main() {
+    let unused = ();
+
+    #![allow(unused_variables)] //~ ERROR not permitted in this context
+    fn foo() {}
+}
diff --git a/tests/ui/parser/issues/issue-45296.stderr b/tests/ui/parser/issues/issue-45296.stderr
new file mode 100644
index 000000000..081a72054
--- /dev/null
+++ b/tests/ui/parser/issues/issue-45296.stderr
@@ -0,0 +1,17 @@
+error: an inner attribute is not permitted in this context
+  --> $DIR/issue-45296.rs:4:5
+   |
+LL |     #![allow(unused_variables)]
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+LL |     fn foo() {}
+   |     ----------- the inner attribute doesn't annotate this function
+   |
+   = note: inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually found at the beginning of source files
+help: to annotate the function, change the attribute from inner to outer style
+   |
+LL -     #![allow(unused_variables)]
+LL +     #[allow(unused_variables)]
+   |
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-46186.fixed b/tests/ui/parser/issues/issue-46186.fixed
new file mode 100644
index 000000000..2cb5a4996
--- /dev/null
+++ b/tests/ui/parser/issues/issue-46186.fixed
@@ -0,0 +1,8 @@
+// run-rustfix
+
+pub struct Struct {
+    pub a: usize,
+}
+//~^ ERROR expected item, found `;`
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-46186.rs b/tests/ui/parser/issues/issue-46186.rs
new file mode 100644
index 000000000..84cad38c5
--- /dev/null
+++ b/tests/ui/parser/issues/issue-46186.rs
@@ -0,0 +1,8 @@
+// run-rustfix
+
+pub struct Struct {
+    pub a: usize,
+};
+//~^ ERROR expected item, found `;`
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-46186.stderr b/tests/ui/parser/issues/issue-46186.stderr
new file mode 100644
index 000000000..0766c8a33
--- /dev/null
+++ b/tests/ui/parser/issues/issue-46186.stderr
@@ -0,0 +1,10 @@
+error: expected item, found `;`
+  --> $DIR/issue-46186.rs:5:2
+   |
+LL | };
+   |  ^ help: remove this semicolon
+   |
+   = help: braced struct declarations are not followed by a semicolon
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-48137-macros-cannot-interpolate-impl-items-bad-variants.rs b/tests/ui/parser/issues/issue-48137-macros-cannot-interpolate-impl-items-bad-variants.rs
new file mode 100644
index 000000000..48a679b2d
--- /dev/null
+++ b/tests/ui/parser/issues/issue-48137-macros-cannot-interpolate-impl-items-bad-variants.rs
@@ -0,0 +1,44 @@
+fn main() {}
+
+macro_rules! expand_to_enum {
+    () => {
+        enum BadE {}
+        //~^ ERROR enum is not supported in `trait`s or `impl`s
+        //~| ERROR enum is not supported in `trait`s or `impl`s
+        //~| ERROR enum is not supported in `extern` blocks
+    };
+}
+
+macro_rules! mac_impl {
+    ($($i:item)*) => {
+        struct S;
+        impl S { $($i)* }
+    }
+}
+
+mac_impl! {
+    struct BadS; //~ ERROR struct is not supported in `trait`s or `impl`s
+    expand_to_enum!();
+}
+
+macro_rules! mac_trait {
+    ($($i:item)*) => {
+        trait T { $($i)* }
+    }
+}
+
+mac_trait! {
+    struct BadS; //~ ERROR struct is not supported in `trait`s or `impl`s
+    expand_to_enum!();
+}
+
+macro_rules! mac_extern {
+    ($($i:item)*) => {
+        extern "C" { $($i)* }
+    }
+}
+
+mac_extern! {
+    struct BadS; //~ ERROR struct is not supported in `extern` blocks
+    expand_to_enum!();
+}
diff --git a/tests/ui/parser/issues/issue-48137-macros-cannot-interpolate-impl-items-bad-variants.stderr b/tests/ui/parser/issues/issue-48137-macros-cannot-interpolate-impl-items-bad-variants.stderr
new file mode 100644
index 000000000..fdef8ff6d
--- /dev/null
+++ b/tests/ui/parser/issues/issue-48137-macros-cannot-interpolate-impl-items-bad-variants.stderr
@@ -0,0 +1,62 @@
+error: struct is not supported in `trait`s or `impl`s
+  --> $DIR/issue-48137-macros-cannot-interpolate-impl-items-bad-variants.rs:20:5
+   |
+LL |     struct BadS;
+   |     ^^^^^^^^^^^^
+   |
+   = help: consider moving the struct out to a nearby module scope
+
+error: enum is not supported in `trait`s or `impl`s
+  --> $DIR/issue-48137-macros-cannot-interpolate-impl-items-bad-variants.rs:5:9
+   |
+LL |         enum BadE {}
+   |         ^^^^^^^^^
+...
+LL |     expand_to_enum!();
+   |     ----------------- in this macro invocation
+   |
+   = help: consider moving the enum out to a nearby module scope
+   = note: this error originates in the macro `expand_to_enum` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: struct is not supported in `trait`s or `impl`s
+  --> $DIR/issue-48137-macros-cannot-interpolate-impl-items-bad-variants.rs:31:5
+   |
+LL |     struct BadS;
+   |     ^^^^^^^^^^^^
+   |
+   = help: consider moving the struct out to a nearby module scope
+
+error: enum is not supported in `trait`s or `impl`s
+  --> $DIR/issue-48137-macros-cannot-interpolate-impl-items-bad-variants.rs:5:9
+   |
+LL |         enum BadE {}
+   |         ^^^^^^^^^
+...
+LL |     expand_to_enum!();
+   |     ----------------- in this macro invocation
+   |
+   = help: consider moving the enum out to a nearby module scope
+   = note: this error originates in the macro `expand_to_enum` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: struct is not supported in `extern` blocks
+  --> $DIR/issue-48137-macros-cannot-interpolate-impl-items-bad-variants.rs:42:5
+   |
+LL |     struct BadS;
+   |     ^^^^^^^^^^^^
+   |
+   = help: consider moving the struct out to a nearby module scope
+
+error: enum is not supported in `extern` blocks
+  --> $DIR/issue-48137-macros-cannot-interpolate-impl-items-bad-variants.rs:5:9
+   |
+LL |         enum BadE {}
+   |         ^^^^^^^^^
+...
+LL |     expand_to_enum!();
+   |     ----------------- in this macro invocation
+   |
+   = help: consider moving the enum out to a nearby module scope
+   = note: this error originates in the macro `expand_to_enum` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: aborting due to 6 previous errors
+
diff --git a/tests/ui/parser/issues/issue-48137-macros-cannot-interpolate-impl-items.rs b/tests/ui/parser/issues/issue-48137-macros-cannot-interpolate-impl-items.rs
new file mode 100644
index 000000000..8592f8a72
--- /dev/null
+++ b/tests/ui/parser/issues/issue-48137-macros-cannot-interpolate-impl-items.rs
@@ -0,0 +1,34 @@
+// check-pass
+
+fn main() {}
+
+macro_rules! mac_impl {
+    ($i:item) => {
+        struct S;
+        impl S { $i }
+    }
+}
+
+mac_impl! {
+    fn foo() {}
+}
+
+macro_rules! mac_trait {
+    ($i:item) => {
+        trait T { $i }
+    }
+}
+
+mac_trait! {
+    fn foo() {}
+}
+
+macro_rules! mac_extern {
+    ($i:item) => {
+        extern "C" { $i }
+    }
+}
+
+mac_extern! {
+    fn foo();
+}
diff --git a/tests/ui/parser/issues/issue-48508-aux.rs b/tests/ui/parser/issues/issue-48508-aux.rs
new file mode 100644
index 000000000..ebdc70a04
--- /dev/null
+++ b/tests/ui/parser/issues/issue-48508-aux.rs
@@ -0,0 +1,7 @@
+// run-pass
+// ignore-test Not a test. Used by issue-48508.rs
+
+pub fn other() -> f64 {
+    let µ = 1.0;
+    µ
+}
diff --git a/tests/ui/parser/issues/issue-48508.rs b/tests/ui/parser/issues/issue-48508.rs
new file mode 100644
index 000000000..37d04c5d6
--- /dev/null
+++ b/tests/ui/parser/issues/issue-48508.rs
@@ -0,0 +1,20 @@
+// run-pass
+// Regression test for issue #48508:
+//
+// Confusion between global and local file offsets caused incorrect handling of multibyte character
+// spans when compiling multiple files. One visible effect was an ICE generating debug information
+// when a multibyte character is at the end of a scope. The problematic code is actually in
+// issue-48508-aux.rs
+
+// compile-flags:-g
+// ignore-pretty issue #37195
+// ignore-asmjs wasm2js does not support source maps yet
+
+#![allow(uncommon_codepoints)]
+
+#[path = "issue-48508-aux.rs"]
+mod other_file;
+
+fn main() {
+    other_file::other();
+}
diff --git a/tests/ui/parser/issues/issue-48636.fixed b/tests/ui/parser/issues/issue-48636.fixed
new file mode 100644
index 000000000..87c19a32d
--- /dev/null
+++ b/tests/ui/parser/issues/issue-48636.fixed
@@ -0,0 +1,12 @@
+// run-rustfix
+
+#![allow(dead_code)]
+
+struct S {
+    x: u8,
+    /// The ID of the parent core
+    y: u8,
+}
+//~^^^ ERROR found a documentation comment that doesn't document anything
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-48636.rs b/tests/ui/parser/issues/issue-48636.rs
new file mode 100644
index 000000000..8610dc2f7
--- /dev/null
+++ b/tests/ui/parser/issues/issue-48636.rs
@@ -0,0 +1,12 @@
+// run-rustfix
+
+#![allow(dead_code)]
+
+struct S {
+    x: u8
+    /// The ID of the parent core
+    y: u8,
+}
+//~^^^ ERROR found a documentation comment that doesn't document anything
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-48636.stderr b/tests/ui/parser/issues/issue-48636.stderr
new file mode 100644
index 000000000..6177870d1
--- /dev/null
+++ b/tests/ui/parser/issues/issue-48636.stderr
@@ -0,0 +1,15 @@
+error[E0585]: found a documentation comment that doesn't document anything
+  --> $DIR/issue-48636.rs:7:5
+   |
+LL | struct S {
+   |        - while parsing this struct
+LL |     x: u8
+   |          - help: missing comma here: `,`
+LL |     /// The ID of the parent core
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = help: doc comments must come before what they document, if a comment was intended use `//`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0585`.
diff --git a/tests/ui/parser/issues/issue-49040.rs b/tests/ui/parser/issues/issue-49040.rs
new file mode 100644
index 000000000..b7a541dd6
--- /dev/null
+++ b/tests/ui/parser/issues/issue-49040.rs
@@ -0,0 +1,3 @@
+#![allow(unused_variables)]; //~ ERROR expected item, found `;`
+//~^ ERROR `main` function
+fn foo() {}
diff --git a/tests/ui/parser/issues/issue-49040.stderr b/tests/ui/parser/issues/issue-49040.stderr
new file mode 100644
index 000000000..8af7838c7
--- /dev/null
+++ b/tests/ui/parser/issues/issue-49040.stderr
@@ -0,0 +1,15 @@
+error: expected item, found `;`
+  --> $DIR/issue-49040.rs:1:28
+   |
+LL | #![allow(unused_variables)];
+   |                            ^ help: remove this semicolon
+
+error[E0601]: `main` function not found in crate `issue_49040`
+  --> $DIR/issue-49040.rs:1:29
+   |
+LL | #![allow(unused_variables)];
+   |                             ^ consider adding a `main` function to `$DIR/issue-49040.rs`
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0601`.
diff --git a/tests/ui/parser/issues/issue-51602.rs b/tests/ui/parser/issues/issue-51602.rs
new file mode 100644
index 000000000..0e96ca914
--- /dev/null
+++ b/tests/ui/parser/issues/issue-51602.rs
@@ -0,0 +1,6 @@
+fn main(){
+    if i in 1..10 {
+//~^ ERROR expected `{`, found keyword `in`
+        break;
+    }
+}
diff --git a/tests/ui/parser/issues/issue-51602.stderr b/tests/ui/parser/issues/issue-51602.stderr
new file mode 100644
index 000000000..4a5653fdb
--- /dev/null
+++ b/tests/ui/parser/issues/issue-51602.stderr
@@ -0,0 +1,14 @@
+error: expected `{`, found keyword `in`
+  --> $DIR/issue-51602.rs:2:10
+   |
+LL |     if i in 1..10 {
+   |          ^^ expected `{`
+   |
+note: the `if` expression is missing a block after this condition
+  --> $DIR/issue-51602.rs:2:8
+   |
+LL |     if i in 1..10 {
+   |        ^
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-52496.rs b/tests/ui/parser/issues/issue-52496.rs
new file mode 100644
index 000000000..05461f8b8
--- /dev/null
+++ b/tests/ui/parser/issues/issue-52496.rs
@@ -0,0 +1,12 @@
+struct Foo { bar: f64, baz: i64, bat: i64 }
+
+fn main() {
+    let _ = Foo { bar: .5, baz: 42 };
+    //~^ ERROR float literals must have an integer part
+    //~| ERROR missing field `bat` in initializer of `Foo`
+    let bar = 1.5f32;
+    let _ = Foo { bar.into(), bat: -1, . };
+    //~^ ERROR expected one of
+    //~| ERROR missing fields `bar` and `baz` in initializer of `Foo`
+    //~| ERROR expected identifier, found `.`
+}
diff --git a/tests/ui/parser/issues/issue-52496.stderr b/tests/ui/parser/issues/issue-52496.stderr
new file mode 100644
index 000000000..77335c64c
--- /dev/null
+++ b/tests/ui/parser/issues/issue-52496.stderr
@@ -0,0 +1,38 @@
+error: float literals must have an integer part
+  --> $DIR/issue-52496.rs:4:24
+   |
+LL |     let _ = Foo { bar: .5, baz: 42 };
+   |                        ^^ help: must have an integer part: `0.5`
+
+error: expected one of `,`, `:`, or `}`, found `.`
+  --> $DIR/issue-52496.rs:8:22
+   |
+LL |     let _ = Foo { bar.into(), bat: -1, . };
+   |             ---   -  ^ expected one of `,`, `:`, or `}`
+   |             |     |
+   |             |     help: try naming a field: `bar:`
+   |             while parsing this struct
+
+error: expected identifier, found `.`
+  --> $DIR/issue-52496.rs:8:40
+   |
+LL |     let _ = Foo { bar.into(), bat: -1, . };
+   |             ---                        ^ expected identifier
+   |             |
+   |             while parsing this struct
+
+error[E0063]: missing field `bat` in initializer of `Foo`
+  --> $DIR/issue-52496.rs:4:13
+   |
+LL |     let _ = Foo { bar: .5, baz: 42 };
+   |             ^^^ missing `bat`
+
+error[E0063]: missing fields `bar` and `baz` in initializer of `Foo`
+  --> $DIR/issue-52496.rs:8:13
+   |
+LL |     let _ = Foo { bar.into(), bat: -1, . };
+   |             ^^^ missing `bar` and `baz`
+
+error: aborting due to 5 previous errors
+
+For more information about this error, try `rustc --explain E0063`.
diff --git a/tests/ui/parser/issues/issue-54521-1.rs b/tests/ui/parser/issues/issue-54521-1.rs
new file mode 100644
index 000000000..8a682ef0a
--- /dev/null
+++ b/tests/ui/parser/issues/issue-54521-1.rs
@@ -0,0 +1,16 @@
+// check-pass
+
+// This test checks that the `remove extra angle brackets` error doesn't happen for some
+// potential edge-cases..
+
+struct X {
+    len: u32,
+}
+
+fn main() {
+    let x = X { len: 3 };
+
+    let _ = x.len > (3);
+
+    let _ = x.len >> (3);
+}
diff --git a/tests/ui/parser/issues/issue-54521-2.fixed b/tests/ui/parser/issues/issue-54521-2.fixed
new file mode 100644
index 000000000..a91c4fe43
--- /dev/null
+++ b/tests/ui/parser/issues/issue-54521-2.fixed
@@ -0,0 +1,22 @@
+// run-rustfix
+
+// This test checks that the following error is emitted and the suggestion works:
+//
+// ```
+// let _ = Vec::<usize>>>::new();
+//                     ^^ help: remove extra angle brackets
+// ```
+
+fn main() {
+    let _ = Vec::<usize>::new();
+    //~^ ERROR unmatched angle bracket
+
+    let _ = Vec::<usize>::new();
+    //~^ ERROR unmatched angle bracket
+
+    let _ = Vec::<usize>::new();
+    //~^ ERROR unmatched angle bracket
+
+    let _ = Vec::<usize>::new();
+    //~^ ERROR unmatched angle bracket
+}
diff --git a/tests/ui/parser/issues/issue-54521-2.rs b/tests/ui/parser/issues/issue-54521-2.rs
new file mode 100644
index 000000000..3639aac87
--- /dev/null
+++ b/tests/ui/parser/issues/issue-54521-2.rs
@@ -0,0 +1,22 @@
+// run-rustfix
+
+// This test checks that the following error is emitted and the suggestion works:
+//
+// ```
+// let _ = Vec::<usize>>>::new();
+//                     ^^ help: remove extra angle brackets
+// ```
+
+fn main() {
+    let _ = Vec::<usize>>>>>::new();
+    //~^ ERROR unmatched angle bracket
+
+    let _ = Vec::<usize>>>>::new();
+    //~^ ERROR unmatched angle bracket
+
+    let _ = Vec::<usize>>>::new();
+    //~^ ERROR unmatched angle bracket
+
+    let _ = Vec::<usize>>::new();
+    //~^ ERROR unmatched angle bracket
+}
diff --git a/tests/ui/parser/issues/issue-54521-2.stderr b/tests/ui/parser/issues/issue-54521-2.stderr
new file mode 100644
index 000000000..9556b83b7
--- /dev/null
+++ b/tests/ui/parser/issues/issue-54521-2.stderr
@@ -0,0 +1,26 @@
+error: unmatched angle brackets
+  --> $DIR/issue-54521-2.rs:11:25
+   |
+LL |     let _ = Vec::<usize>>>>>::new();
+   |                         ^^^^ help: remove extra angle brackets
+
+error: unmatched angle brackets
+  --> $DIR/issue-54521-2.rs:14:25
+   |
+LL |     let _ = Vec::<usize>>>>::new();
+   |                         ^^^ help: remove extra angle brackets
+
+error: unmatched angle brackets
+  --> $DIR/issue-54521-2.rs:17:25
+   |
+LL |     let _ = Vec::<usize>>>::new();
+   |                         ^^ help: remove extra angle brackets
+
+error: unmatched angle bracket
+  --> $DIR/issue-54521-2.rs:20:25
+   |
+LL |     let _ = Vec::<usize>>::new();
+   |                         ^ help: remove extra angle bracket
+
+error: aborting due to 4 previous errors
+
diff --git a/tests/ui/parser/issues/issue-54521-3.fixed b/tests/ui/parser/issues/issue-54521-3.fixed
new file mode 100644
index 000000000..84ab6866c
--- /dev/null
+++ b/tests/ui/parser/issues/issue-54521-3.fixed
@@ -0,0 +1,22 @@
+// run-rustfix
+
+// This test checks that the following error is emitted and the suggestion works:
+//
+// ```
+// let _ = vec![1, 2, 3].into_iter().collect::<Vec<usize>>>>();
+//                                                        ^^ help: remove extra angle brackets
+// ```
+
+fn main() {
+    let _ = vec![1, 2, 3].into_iter().collect::<Vec<usize>>();
+    //~^ ERROR unmatched angle bracket
+
+    let _ = vec![1, 2, 3].into_iter().collect::<Vec<usize>>();
+    //~^ ERROR unmatched angle bracket
+
+    let _ = vec![1, 2, 3].into_iter().collect::<Vec<usize>>();
+    //~^ ERROR unmatched angle bracket
+
+    let _ = vec![1, 2, 3].into_iter().collect::<Vec<usize>>();
+    //~^ ERROR unmatched angle bracket
+}
diff --git a/tests/ui/parser/issues/issue-54521-3.rs b/tests/ui/parser/issues/issue-54521-3.rs
new file mode 100644
index 000000000..f1d685041
--- /dev/null
+++ b/tests/ui/parser/issues/issue-54521-3.rs
@@ -0,0 +1,22 @@
+// run-rustfix
+
+// This test checks that the following error is emitted and the suggestion works:
+//
+// ```
+// let _ = vec![1, 2, 3].into_iter().collect::<Vec<usize>>>>();
+//                                                        ^^ help: remove extra angle brackets
+// ```
+
+fn main() {
+    let _ = vec![1, 2, 3].into_iter().collect::<Vec<usize>>>>>>();
+    //~^ ERROR unmatched angle bracket
+
+    let _ = vec![1, 2, 3].into_iter().collect::<Vec<usize>>>>>();
+    //~^ ERROR unmatched angle bracket
+
+    let _ = vec![1, 2, 3].into_iter().collect::<Vec<usize>>>>();
+    //~^ ERROR unmatched angle bracket
+
+    let _ = vec![1, 2, 3].into_iter().collect::<Vec<usize>>>();
+    //~^ ERROR unmatched angle bracket
+}
diff --git a/tests/ui/parser/issues/issue-54521-3.stderr b/tests/ui/parser/issues/issue-54521-3.stderr
new file mode 100644
index 000000000..0f23dd621
--- /dev/null
+++ b/tests/ui/parser/issues/issue-54521-3.stderr
@@ -0,0 +1,26 @@
+error: unmatched angle brackets
+  --> $DIR/issue-54521-3.rs:11:60
+   |
+LL |     let _ = vec![1, 2, 3].into_iter().collect::<Vec<usize>>>>>>();
+   |                                                            ^^^^ help: remove extra angle brackets
+
+error: unmatched angle brackets
+  --> $DIR/issue-54521-3.rs:14:60
+   |
+LL |     let _ = vec![1, 2, 3].into_iter().collect::<Vec<usize>>>>>();
+   |                                                            ^^^ help: remove extra angle brackets
+
+error: unmatched angle brackets
+  --> $DIR/issue-54521-3.rs:17:60
+   |
+LL |     let _ = vec![1, 2, 3].into_iter().collect::<Vec<usize>>>>();
+   |                                                            ^^ help: remove extra angle brackets
+
+error: unmatched angle bracket
+  --> $DIR/issue-54521-3.rs:20:60
+   |
+LL |     let _ = vec![1, 2, 3].into_iter().collect::<Vec<usize>>>();
+   |                                                            ^ help: remove extra angle bracket
+
+error: aborting due to 4 previous errors
+
diff --git a/tests/ui/parser/issues/issue-5544-a.rs b/tests/ui/parser/issues/issue-5544-a.rs
new file mode 100644
index 000000000..3c239c73b
--- /dev/null
+++ b/tests/ui/parser/issues/issue-5544-a.rs
@@ -0,0 +1,4 @@
+fn main() {
+    let __isize = 340282366920938463463374607431768211456; // 2^128
+    //~^ ERROR integer literal is too large
+}
diff --git a/tests/ui/parser/issues/issue-5544-a.stderr b/tests/ui/parser/issues/issue-5544-a.stderr
new file mode 100644
index 000000000..6e68c7585
--- /dev/null
+++ b/tests/ui/parser/issues/issue-5544-a.stderr
@@ -0,0 +1,10 @@
+error: integer literal is too large
+  --> $DIR/issue-5544-a.rs:2:19
+   |
+LL |     let __isize = 340282366920938463463374607431768211456; // 2^128
+   |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: value exceeds limit of `340282366920938463463374607431768211455`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-5544-b.rs b/tests/ui/parser/issues/issue-5544-b.rs
new file mode 100644
index 000000000..93f2ff271
--- /dev/null
+++ b/tests/ui/parser/issues/issue-5544-b.rs
@@ -0,0 +1,4 @@
+fn main() {
+    let __isize = 0xffff_ffff_ffff_ffff_ffff_ffff_ffff_ffff_ff;
+    //~^ ERROR integer literal is too large
+}
diff --git a/tests/ui/parser/issues/issue-5544-b.stderr b/tests/ui/parser/issues/issue-5544-b.stderr
new file mode 100644
index 000000000..5d0e76d5d
--- /dev/null
+++ b/tests/ui/parser/issues/issue-5544-b.stderr
@@ -0,0 +1,10 @@
+error: integer literal is too large
+  --> $DIR/issue-5544-b.rs:2:19
+   |
+LL |     let __isize = 0xffff_ffff_ffff_ffff_ffff_ffff_ffff_ffff_ff;
+   |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: value exceeds limit of `0xffffffffffffffffffffffffffffffff`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-56031.rs b/tests/ui/parser/issues/issue-56031.rs
new file mode 100644
index 000000000..b68f56814
--- /dev/null
+++ b/tests/ui/parser/issues/issue-56031.rs
@@ -0,0 +1,6 @@
+struct T;
+
+impl for T {}
+//~^ ERROR missing trait in a trait impl
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-56031.stderr b/tests/ui/parser/issues/issue-56031.stderr
new file mode 100644
index 000000000..2fa05dd2d
--- /dev/null
+++ b/tests/ui/parser/issues/issue-56031.stderr
@@ -0,0 +1,18 @@
+error: missing trait in a trait impl
+  --> $DIR/issue-56031.rs:3:5
+   |
+LL | impl for T {}
+   |     ^
+   |
+help: add a trait here
+   |
+LL | impl Trait for T {}
+   |      +++++
+help: for an inherent impl, drop this `for`
+   |
+LL - impl for T {}
+LL + impl T {}
+   |
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-57198.rs b/tests/ui/parser/issues/issue-57198.rs
new file mode 100644
index 000000000..714a46cbc
--- /dev/null
+++ b/tests/ui/parser/issues/issue-57198.rs
@@ -0,0 +1,8 @@
+mod m {
+    pub fn r#for() {}
+}
+
+fn main() {
+    m::for();
+    //~^ ERROR expected identifier, found keyword `for`
+}
diff --git a/tests/ui/parser/issues/issue-57198.stderr b/tests/ui/parser/issues/issue-57198.stderr
new file mode 100644
index 000000000..dd70b4022
--- /dev/null
+++ b/tests/ui/parser/issues/issue-57198.stderr
@@ -0,0 +1,13 @@
+error: expected identifier, found keyword `for`
+  --> $DIR/issue-57198.rs:6:8
+   |
+LL |     m::for();
+   |        ^^^ expected identifier, found keyword
+   |
+help: escape `for` to use it as an identifier
+   |
+LL |     m::r#for();
+   |        ++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-57684.fixed b/tests/ui/parser/issues/issue-57684.fixed
new file mode 100644
index 000000000..4a432206d
--- /dev/null
+++ b/tests/ui/parser/issues/issue-57684.fixed
@@ -0,0 +1,37 @@
+// run-rustfix
+
+#![allow(warnings)]
+
+// This test checks that the following error is emitted when a `=` character is used to initialize
+// a struct field when a `:` is expected.
+//
+// ```
+// error: struct fields are initialized with a colon
+//   --> $DIR/issue-57684.rs:12:20
+//    |
+// LL |     let _ = X { f1 = 5 };
+//    |                    ^ help: replace equals symbol with a colon: `:`
+// ```
+
+struct X {
+    f1: i32,
+}
+
+struct Y {
+    f1: i32,
+    f2: i32,
+    f3: i32,
+}
+
+fn main() {
+    let _ = X { f1: 5 };
+    //~^ ERROR expected `:`, found `=`
+
+    let f3 = 3;
+    let _ = Y {
+        f1: 5,
+        //~^ ERROR expected `:`, found `=`
+        f2: 4,
+        f3,
+    };
+}
diff --git a/tests/ui/parser/issues/issue-57684.rs b/tests/ui/parser/issues/issue-57684.rs
new file mode 100644
index 000000000..7a62785e3
--- /dev/null
+++ b/tests/ui/parser/issues/issue-57684.rs
@@ -0,0 +1,37 @@
+// run-rustfix
+
+#![allow(warnings)]
+
+// This test checks that the following error is emitted when a `=` character is used to initialize
+// a struct field when a `:` is expected.
+//
+// ```
+// error: struct fields are initialized with a colon
+//   --> $DIR/issue-57684.rs:12:20
+//    |
+// LL |     let _ = X { f1 = 5 };
+//    |                    ^ help: replace equals symbol with a colon: `:`
+// ```
+
+struct X {
+    f1: i32,
+}
+
+struct Y {
+    f1: i32,
+    f2: i32,
+    f3: i32,
+}
+
+fn main() {
+    let _ = X { f1 = 5 };
+    //~^ ERROR expected `:`, found `=`
+
+    let f3 = 3;
+    let _ = Y {
+        f1 = 5,
+        //~^ ERROR expected `:`, found `=`
+        f2: 4,
+        f3,
+    };
+}
diff --git a/tests/ui/parser/issues/issue-57684.stderr b/tests/ui/parser/issues/issue-57684.stderr
new file mode 100644
index 000000000..514bbffde
--- /dev/null
+++ b/tests/ui/parser/issues/issue-57684.stderr
@@ -0,0 +1,18 @@
+error: expected `:`, found `=`
+  --> $DIR/issue-57684.rs:27:20
+   |
+LL |     let _ = X { f1 = 5 };
+   |                   -^
+   |                   |
+   |                   help: replace equals symbol with a colon: `:`
+
+error: expected `:`, found `=`
+  --> $DIR/issue-57684.rs:32:12
+   |
+LL |         f1 = 5,
+   |           -^
+   |           |
+   |           help: replace equals symbol with a colon: `:`
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/issues/issue-57819.fixed b/tests/ui/parser/issues/issue-57819.fixed
new file mode 100644
index 000000000..3fab21db2
--- /dev/null
+++ b/tests/ui/parser/issues/issue-57819.fixed
@@ -0,0 +1,47 @@
+// run-rustfix
+
+#![allow(warnings)]
+
+// This test checks that the following error is emitted and the suggestion works:
+//
+// ```
+// let _ = vec![1, 2, 3].into_iter().collect::<<<Vec<usize>>();
+//                                            ^^ help: remove extra angle brackets
+// ```
+
+trait Foo {
+    type Output;
+}
+
+fn foo<T: Foo>() {
+    // More complex cases with more than one correct leading `<` character:
+
+    bar::<<T as Foo>::Output>();
+    //~^ ERROR unmatched angle bracket
+
+    bar::<<T as Foo>::Output>();
+    //~^ ERROR unmatched angle bracket
+
+    bar::<<T as Foo>::Output>();
+    //~^ ERROR unmatched angle bracket
+
+    bar::<<T as Foo>::Output>();
+}
+
+fn bar<T>() {}
+
+fn main() {
+    let _ = vec![1, 2, 3].into_iter().collect::<Vec<usize>>();
+    //~^ ERROR unmatched angle bracket
+
+    let _ = vec![1, 2, 3].into_iter().collect::<Vec<usize>>();
+    //~^ ERROR unmatched angle bracket
+
+    let _ = vec![1, 2, 3].into_iter().collect::<Vec<usize>>();
+    //~^ ERROR unmatched angle bracket
+
+    let _ = vec![1, 2, 3].into_iter().collect::<Vec<usize>>();
+    //~^ ERROR unmatched angle bracket
+
+    let _ = vec![1, 2, 3].into_iter().collect::<Vec<usize>>();
+}
diff --git a/tests/ui/parser/issues/issue-57819.rs b/tests/ui/parser/issues/issue-57819.rs
new file mode 100644
index 000000000..5cafbf439
--- /dev/null
+++ b/tests/ui/parser/issues/issue-57819.rs
@@ -0,0 +1,47 @@
+// run-rustfix
+
+#![allow(warnings)]
+
+// This test checks that the following error is emitted and the suggestion works:
+//
+// ```
+// let _ = vec![1, 2, 3].into_iter().collect::<<<Vec<usize>>();
+//                                            ^^ help: remove extra angle brackets
+// ```
+
+trait Foo {
+    type Output;
+}
+
+fn foo<T: Foo>() {
+    // More complex cases with more than one correct leading `<` character:
+
+    bar::<<<<<T as Foo>::Output>();
+    //~^ ERROR unmatched angle bracket
+
+    bar::<<<<T as Foo>::Output>();
+    //~^ ERROR unmatched angle bracket
+
+    bar::<<<T as Foo>::Output>();
+    //~^ ERROR unmatched angle bracket
+
+    bar::<<T as Foo>::Output>();
+}
+
+fn bar<T>() {}
+
+fn main() {
+    let _ = vec![1, 2, 3].into_iter().collect::<<<<<Vec<usize>>();
+    //~^ ERROR unmatched angle bracket
+
+    let _ = vec![1, 2, 3].into_iter().collect::<<<<Vec<usize>>();
+    //~^ ERROR unmatched angle bracket
+
+    let _ = vec![1, 2, 3].into_iter().collect::<<<Vec<usize>>();
+    //~^ ERROR unmatched angle bracket
+
+    let _ = vec![1, 2, 3].into_iter().collect::<<Vec<usize>>();
+    //~^ ERROR unmatched angle bracket
+
+    let _ = vec![1, 2, 3].into_iter().collect::<Vec<usize>>();
+}
diff --git a/tests/ui/parser/issues/issue-57819.stderr b/tests/ui/parser/issues/issue-57819.stderr
new file mode 100644
index 000000000..493e9835b
--- /dev/null
+++ b/tests/ui/parser/issues/issue-57819.stderr
@@ -0,0 +1,44 @@
+error: unmatched angle brackets
+  --> $DIR/issue-57819.rs:19:10
+   |
+LL |     bar::<<<<<T as Foo>::Output>();
+   |          ^^^ help: remove extra angle brackets
+
+error: unmatched angle brackets
+  --> $DIR/issue-57819.rs:22:10
+   |
+LL |     bar::<<<<T as Foo>::Output>();
+   |          ^^ help: remove extra angle brackets
+
+error: unmatched angle bracket
+  --> $DIR/issue-57819.rs:25:10
+   |
+LL |     bar::<<<T as Foo>::Output>();
+   |          ^ help: remove extra angle bracket
+
+error: unmatched angle brackets
+  --> $DIR/issue-57819.rs:34:48
+   |
+LL |     let _ = vec![1, 2, 3].into_iter().collect::<<<<<Vec<usize>>();
+   |                                                ^^^^ help: remove extra angle brackets
+
+error: unmatched angle brackets
+  --> $DIR/issue-57819.rs:37:48
+   |
+LL |     let _ = vec![1, 2, 3].into_iter().collect::<<<<Vec<usize>>();
+   |                                                ^^^ help: remove extra angle brackets
+
+error: unmatched angle brackets
+  --> $DIR/issue-57819.rs:40:48
+   |
+LL |     let _ = vec![1, 2, 3].into_iter().collect::<<<Vec<usize>>();
+   |                                                ^^ help: remove extra angle brackets
+
+error: unmatched angle bracket
+  --> $DIR/issue-57819.rs:43:48
+   |
+LL |     let _ = vec![1, 2, 3].into_iter().collect::<<Vec<usize>>();
+   |                                                ^ help: remove extra angle bracket
+
+error: aborting due to 7 previous errors
+
diff --git a/tests/ui/parser/issues/issue-5806.rs b/tests/ui/parser/issues/issue-5806.rs
new file mode 100644
index 000000000..b694642a9
--- /dev/null
+++ b/tests/ui/parser/issues/issue-5806.rs
@@ -0,0 +1,7 @@
+// normalize-stderr-test: "parser:.*\(" -> "parser: $$ACCESS_DENIED_MSG ("
+// normalize-stderr-test: "os error \d+" -> "os error $$ACCESS_DENIED_CODE"
+
+#[path = "../parser"]
+mod foo; //~ ERROR couldn't read
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-5806.stderr b/tests/ui/parser/issues/issue-5806.stderr
new file mode 100644
index 000000000..bdb5c91ff
--- /dev/null
+++ b/tests/ui/parser/issues/issue-5806.stderr
@@ -0,0 +1,8 @@
+error: couldn't read $DIR/../parser: $ACCESS_DENIED_MSG (os error $ACCESS_DENIED_CODE)
+  --> $DIR/issue-5806.rs:5:1
+   |
+LL | mod foo;
+   | ^^^^^^^^
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-58094-missing-right-square-bracket.rs b/tests/ui/parser/issues/issue-58094-missing-right-square-bracket.rs
new file mode 100644
index 000000000..25699f9fe
--- /dev/null
+++ b/tests/ui/parser/issues/issue-58094-missing-right-square-bracket.rs
@@ -0,0 +1,4 @@
+// Fixed in #66054.
+// ignore-tidy-trailing-newlines
+// error-pattern: aborting due to 2 previous errors
+#[Ѕ
\ No newline at end of file
diff --git a/tests/ui/parser/issues/issue-58094-missing-right-square-bracket.stderr b/tests/ui/parser/issues/issue-58094-missing-right-square-bracket.stderr
new file mode 100644
index 000000000..8a44ee761
--- /dev/null
+++ b/tests/ui/parser/issues/issue-58094-missing-right-square-bracket.stderr
@@ -0,0 +1,16 @@
+error: this file contains an unclosed delimiter
+  --> $DIR/issue-58094-missing-right-square-bracket.rs:4:4
+   |
+LL | #[Ѕ
+   |  - ^
+   |  |
+   |  unclosed delimiter
+
+error: expected item after attributes
+  --> $DIR/issue-58094-missing-right-square-bracket.rs:4:1
+   |
+LL | #[Ѕ
+   | ^^^
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/issues/issue-58856-1.rs b/tests/ui/parser/issues/issue-58856-1.rs
new file mode 100644
index 000000000..ea80eb871
--- /dev/null
+++ b/tests/ui/parser/issues/issue-58856-1.rs
@@ -0,0 +1,8 @@
+impl A {
+    //~^ ERROR cannot find type `A` in this scope
+    fn b(self>
+    //~^ ERROR expected one of `)`, `,`, or `:`, found `>`
+    //~| ERROR expected one of `->`, `where`, or `{`, found `>`
+}
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-58856-1.stderr b/tests/ui/parser/issues/issue-58856-1.stderr
new file mode 100644
index 000000000..96151f3fe
--- /dev/null
+++ b/tests/ui/parser/issues/issue-58856-1.stderr
@@ -0,0 +1,29 @@
+error: expected one of `)`, `,`, or `:`, found `>`
+  --> $DIR/issue-58856-1.rs:3:9
+   |
+LL |     fn b(self>
+   |         ^    ^ help: `)` may belong here
+   |         |
+   |         unclosed delimiter
+
+error: expected one of `->`, `where`, or `{`, found `>`
+  --> $DIR/issue-58856-1.rs:3:14
+   |
+LL | impl A {
+   |        - while parsing this item list starting here
+LL |
+LL |     fn b(self>
+   |              ^ expected one of `->`, `where`, or `{`
+...
+LL | }
+   | - the item list ends here
+
+error[E0412]: cannot find type `A` in this scope
+  --> $DIR/issue-58856-1.rs:1:6
+   |
+LL | impl A {
+   |      ^ not found in this scope
+
+error: aborting due to 3 previous errors
+
+For more information about this error, try `rustc --explain E0412`.
diff --git a/tests/ui/parser/issues/issue-58856-2.rs b/tests/ui/parser/issues/issue-58856-2.rs
new file mode 100644
index 000000000..9356d57b0
--- /dev/null
+++ b/tests/ui/parser/issues/issue-58856-2.rs
@@ -0,0 +1,14 @@
+struct Empty;
+
+trait Howness {}
+
+impl Howness for () {
+    fn how_are_you(&self -> Empty {
+    //~^ ERROR expected one of `)` or `,`, found `->`
+    //~| ERROR method `how_are_you` is not a member of trait `Howness`
+        Empty
+    }
+}
+//~^ ERROR non-item in item list
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-58856-2.stderr b/tests/ui/parser/issues/issue-58856-2.stderr
new file mode 100644
index 000000000..627dd3890
--- /dev/null
+++ b/tests/ui/parser/issues/issue-58856-2.stderr
@@ -0,0 +1,34 @@
+error: expected one of `)` or `,`, found `->`
+  --> $DIR/issue-58856-2.rs:6:19
+   |
+LL |     fn how_are_you(&self -> Empty {
+   |                   ^     -^^
+   |                   |     |
+   |                   |     help: `)` may belong here
+   |                   unclosed delimiter
+
+error: non-item in item list
+  --> $DIR/issue-58856-2.rs:11:1
+   |
+LL | impl Howness for () {
+   |                     - item list starts here
+...
+LL | }
+   | ^
+   | |
+   | non-item starts here
+   | item list ends here
+
+error[E0407]: method `how_are_you` is not a member of trait `Howness`
+  --> $DIR/issue-58856-2.rs:6:5
+   |
+LL | /     fn how_are_you(&self -> Empty {
+LL | |
+LL | |
+LL | |         Empty
+LL | |     }
+   | |_____^ not a member of trait `Howness`
+
+error: aborting due to 3 previous errors
+
+For more information about this error, try `rustc --explain E0407`.
diff --git a/tests/ui/parser/issues/issue-59418.rs b/tests/ui/parser/issues/issue-59418.rs
new file mode 100644
index 000000000..0fa191d4a
--- /dev/null
+++ b/tests/ui/parser/issues/issue-59418.rs
@@ -0,0 +1,18 @@
+struct X(i32,i32,i32);
+
+fn main() {
+    let a = X(1, 2, 3);
+    let b = a.1suffix;
+    //~^ ERROR suffixes on a tuple index are invalid
+    println!("{}", b);
+    let c = (1, 2, 3);
+    let d = c.1suffix;
+    //~^ ERROR suffixes on a tuple index are invalid
+    println!("{}", d);
+    let s = X { 0suffix: 0, 1: 1, 2: 2 };
+    //~^ ERROR suffixes on a tuple index are invalid
+    match s {
+        X { 0suffix: _, .. } => {}
+        //~^ ERROR suffixes on a tuple index are invalid
+    }
+}
diff --git a/tests/ui/parser/issues/issue-59418.stderr b/tests/ui/parser/issues/issue-59418.stderr
new file mode 100644
index 000000000..347051e9f
--- /dev/null
+++ b/tests/ui/parser/issues/issue-59418.stderr
@@ -0,0 +1,26 @@
+error: suffixes on a tuple index are invalid
+  --> $DIR/issue-59418.rs:5:15
+   |
+LL |     let b = a.1suffix;
+   |               ^^^^^^^ invalid suffix `suffix`
+
+error: suffixes on a tuple index are invalid
+  --> $DIR/issue-59418.rs:9:15
+   |
+LL |     let d = c.1suffix;
+   |               ^^^^^^^ invalid suffix `suffix`
+
+error: suffixes on a tuple index are invalid
+  --> $DIR/issue-59418.rs:12:17
+   |
+LL |     let s = X { 0suffix: 0, 1: 1, 2: 2 };
+   |                 ^^^^^^^ invalid suffix `suffix`
+
+error: suffixes on a tuple index are invalid
+  --> $DIR/issue-59418.rs:15:13
+   |
+LL |         X { 0suffix: _, .. } => {}
+   |             ^^^^^^^ invalid suffix `suffix`
+
+error: aborting due to 4 previous errors
+
diff --git a/tests/ui/parser/issues/issue-60075.rs b/tests/ui/parser/issues/issue-60075.rs
new file mode 100644
index 000000000..e89d78ee8
--- /dev/null
+++ b/tests/ui/parser/issues/issue-60075.rs
@@ -0,0 +1,11 @@
+fn main() {}
+
+trait T {
+    fn qux() -> Option<usize> {
+        let _ = if true {
+        });
+//~^ ERROR non-item in item list
+//~| ERROR mismatched closing delimiter: `)`
+//~| ERROR expected one of `.`, `;`
+        Some(4)
+    }
diff --git a/tests/ui/parser/issues/issue-60075.stderr b/tests/ui/parser/issues/issue-60075.stderr
new file mode 100644
index 000000000..210ef700c
--- /dev/null
+++ b/tests/ui/parser/issues/issue-60075.stderr
@@ -0,0 +1,29 @@
+error: expected one of `.`, `;`, `?`, `else`, or an operator, found `}`
+  --> $DIR/issue-60075.rs:6:10
+   |
+LL |         });
+   |          ^ expected one of `.`, `;`, `?`, `else`, or an operator
+
+error: non-item in item list
+  --> $DIR/issue-60075.rs:6:11
+   |
+LL | trait T {
+   |         - item list starts here
+...
+LL |         });
+   |           ^ non-item starts here
+...
+LL |     }
+   |     - item list ends here
+
+error: mismatched closing delimiter: `)`
+  --> $DIR/issue-60075.rs:4:31
+   |
+LL |     fn qux() -> Option<usize> {
+   |                               ^ unclosed delimiter
+LL |         let _ = if true {
+LL |         });
+   |          ^ mismatched closing delimiter
+
+error: aborting due to 3 previous errors
+
diff --git a/tests/ui/parser/issues/issue-62524.rs b/tests/ui/parser/issues/issue-62524.rs
new file mode 100644
index 000000000..5259dfe2e
--- /dev/null
+++ b/tests/ui/parser/issues/issue-62524.rs
@@ -0,0 +1,6 @@
+// ignore-tidy-trailing-newlines
+// error-pattern: aborting due to 3 previous errors
+#![allow(uncommon_codepoints)]
+
+y![
+Ϥ,
\ No newline at end of file
diff --git a/tests/ui/parser/issues/issue-62524.stderr b/tests/ui/parser/issues/issue-62524.stderr
new file mode 100644
index 000000000..55eed0402
--- /dev/null
+++ b/tests/ui/parser/issues/issue-62524.stderr
@@ -0,0 +1,33 @@
+error: this file contains an unclosed delimiter
+  --> $DIR/issue-62524.rs:6:3
+   |
+LL | y![
+   |   - unclosed delimiter
+LL | Ϥ,
+   |   ^
+
+error: macros that expand to items must be delimited with braces or followed by a semicolon
+  --> $DIR/issue-62524.rs:5:3
+   |
+LL |   y![
+   |  ___^
+LL | | Ϥ,
+   | |__^
+   |
+help: change the delimiters to curly braces
+   |
+LL | y! { /* items */ }
+   |    ~~~~~~~~~~~~~~~
+help: add a semicolon
+   |
+LL | Ϥ,;
+   |   +
+
+error: cannot find macro `y` in this scope
+  --> $DIR/issue-62524.rs:5:1
+   |
+LL | y![
+   | ^
+
+error: aborting due to 3 previous errors
+
diff --git a/tests/ui/parser/issues/issue-62546.rs b/tests/ui/parser/issues/issue-62546.rs
new file mode 100644
index 000000000..f06b65058
--- /dev/null
+++ b/tests/ui/parser/issues/issue-62546.rs
@@ -0,0 +1,3 @@
+pub t(#
+//~^ ERROR missing `fn` or `struct` for function or struct definition
+//~ ERROR this file contains an unclosed delimiter
diff --git a/tests/ui/parser/issues/issue-62546.stderr b/tests/ui/parser/issues/issue-62546.stderr
new file mode 100644
index 000000000..32c61391e
--- /dev/null
+++ b/tests/ui/parser/issues/issue-62546.stderr
@@ -0,0 +1,17 @@
+error: this file contains an unclosed delimiter
+  --> $DIR/issue-62546.rs:3:52
+   |
+LL | pub t(#
+   |      - unclosed delimiter
+LL |
+LL |
+   |                                                    ^
+
+error: missing `fn` or `struct` for function or struct definition
+  --> $DIR/issue-62546.rs:1:4
+   |
+LL | pub t(#
+   | ---^- help: if you meant to call a macro, try: `t!`
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/issues/issue-62554.rs b/tests/ui/parser/issues/issue-62554.rs
new file mode 100644
index 000000000..cfd02183c
--- /dev/null
+++ b/tests/ui/parser/issues/issue-62554.rs
@@ -0,0 +1,6 @@
+// error-pattern:this file contains an unclosed delimiter
+// error-pattern:xpected `{`, found `macro_rules`
+
+fn main() {}
+
+fn foo(u: u8) { if u8 macro_rules! u8 { (u6) => { fn uuuuuuuuuuu() { use s loo mod u8 {
diff --git a/tests/ui/parser/issues/issue-62554.stderr b/tests/ui/parser/issues/issue-62554.stderr
new file mode 100644
index 000000000..9e62572e3
--- /dev/null
+++ b/tests/ui/parser/issues/issue-62554.stderr
@@ -0,0 +1,73 @@
+error: this file contains an unclosed delimiter
+  --> $DIR/issue-62554.rs:6:89
+   |
+LL | fn foo(u: u8) { if u8 macro_rules! u8 { (u6) => { fn uuuuuuuuuuu() { use s loo mod u8 {
+   |               -                       -         -                  -                  - ^
+   |               |                       |         |                  |                  |
+   |               |                       |         |                  |                  unclosed delimiter
+   |               |                       |         |                  unclosed delimiter
+   |               |                       |         unclosed delimiter
+   |               unclosed delimiter      unclosed delimiter
+
+error: this file contains an unclosed delimiter
+  --> $DIR/issue-62554.rs:6:89
+   |
+LL | fn foo(u: u8) { if u8 macro_rules! u8 { (u6) => { fn uuuuuuuuuuu() { use s loo mod u8 {
+   |               -                       -         -                  -                  - ^
+   |               |                       |         |                  |                  |
+   |               |                       |         |                  |                  unclosed delimiter
+   |               |                       |         |                  unclosed delimiter
+   |               |                       |         unclosed delimiter
+   |               unclosed delimiter      unclosed delimiter
+
+error: this file contains an unclosed delimiter
+  --> $DIR/issue-62554.rs:6:89
+   |
+LL | fn foo(u: u8) { if u8 macro_rules! u8 { (u6) => { fn uuuuuuuuuuu() { use s loo mod u8 {
+   |               -                       -         -                  -                  - ^
+   |               |                       |         |                  |                  |
+   |               |                       |         |                  |                  unclosed delimiter
+   |               |                       |         |                  unclosed delimiter
+   |               |                       |         unclosed delimiter
+   |               unclosed delimiter      unclosed delimiter
+
+error: this file contains an unclosed delimiter
+  --> $DIR/issue-62554.rs:6:89
+   |
+LL | fn foo(u: u8) { if u8 macro_rules! u8 { (u6) => { fn uuuuuuuuuuu() { use s loo mod u8 {
+   |               -                       -         -                  -                  - ^
+   |               |                       |         |                  |                  |
+   |               |                       |         |                  |                  unclosed delimiter
+   |               |                       |         |                  unclosed delimiter
+   |               |                       |         unclosed delimiter
+   |               unclosed delimiter      unclosed delimiter
+
+error: this file contains an unclosed delimiter
+  --> $DIR/issue-62554.rs:6:89
+   |
+LL | fn foo(u: u8) { if u8 macro_rules! u8 { (u6) => { fn uuuuuuuuuuu() { use s loo mod u8 {
+   |               -                       -         -                  -                  - ^
+   |               |                       |         |                  |                  |
+   |               |                       |         |                  |                  unclosed delimiter
+   |               |                       |         |                  unclosed delimiter
+   |               |                       |         unclosed delimiter
+   |               unclosed delimiter      unclosed delimiter
+
+error: expected `{`, found `macro_rules`
+  --> $DIR/issue-62554.rs:6:23
+   |
+LL | fn foo(u: u8) { if u8 macro_rules! u8 { (u6) => { fn uuuuuuuuuuu() { use s loo mod u8 {
+   |                       ^^^^^^^^^^^ expected `{`
+   |
+note: the `if` expression is missing a block after this condition
+  --> $DIR/issue-62554.rs:6:20
+   |
+LL | fn foo(u: u8) { if u8 macro_rules! u8 { (u6) => { fn uuuuuuuuuuu() { use s loo mod u8 {
+   |                    ^^
+help: try placing this code inside a block
+   |
+LL | fn foo(u: u8) { if u8 { macro_rules! u8 { (u6) => { fn uuuuuuuuuuu() { use s loo mod u8 { }
+   |                       +                                                                    +
+
+error: aborting due to 6 previous errors
+
diff --git a/tests/ui/parser/issues/issue-62660.rs b/tests/ui/parser/issues/issue-62660.rs
new file mode 100644
index 000000000..33c8a9fa3
--- /dev/null
+++ b/tests/ui/parser/issues/issue-62660.rs
@@ -0,0 +1,11 @@
+// Regression test for issue #62660: if a receiver's type does not
+// successfully parse, emit the correct error instead of ICE-ing the compiler.
+
+struct Foo;
+
+impl Foo {
+    pub fn foo(_: i32, self: Box<Self) {}
+    //~^ ERROR expected one of `!`, `(`, `+`, `,`, `::`, `<`, or `>`, found `)`
+}
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-62660.stderr b/tests/ui/parser/issues/issue-62660.stderr
new file mode 100644
index 000000000..14c0bdcb1
--- /dev/null
+++ b/tests/ui/parser/issues/issue-62660.stderr
@@ -0,0 +1,13 @@
+error: expected one of `!`, `(`, `+`, `,`, `::`, `<`, or `>`, found `)`
+  --> $DIR/issue-62660.rs:7:38
+   |
+LL |     pub fn foo(_: i32, self: Box<Self) {}
+   |                                      ^ expected one of 7 possible tokens
+   |
+help: you might have meant to end the type parameters here
+   |
+LL |     pub fn foo(_: i32, self: Box<Self>) {}
+   |                                      +
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-62881.rs b/tests/ui/parser/issues/issue-62881.rs
new file mode 100644
index 000000000..b9204595f
--- /dev/null
+++ b/tests/ui/parser/issues/issue-62881.rs
@@ -0,0 +1,6 @@
+fn main() {}
+
+fn f() -> isize { fn f() -> isize {} pub f<
+//~^ ERROR missing `fn` or `struct` for function or struct definition
+//~| ERROR mismatched types
+//~ ERROR this file contains an unclosed delimiter
diff --git a/tests/ui/parser/issues/issue-62881.stderr b/tests/ui/parser/issues/issue-62881.stderr
new file mode 100644
index 000000000..87be69baa
--- /dev/null
+++ b/tests/ui/parser/issues/issue-62881.stderr
@@ -0,0 +1,26 @@
+error: this file contains an unclosed delimiter
+  --> $DIR/issue-62881.rs:6:52
+   |
+LL | fn f() -> isize { fn f() -> isize {} pub f<
+   |                 - unclosed delimiter
+...
+LL |
+   |                                                    ^
+
+error: missing `fn` or `struct` for function or struct definition
+  --> $DIR/issue-62881.rs:3:41
+   |
+LL | fn f() -> isize { fn f() -> isize {} pub f<
+   |                                         ^
+
+error[E0308]: mismatched types
+  --> $DIR/issue-62881.rs:3:29
+   |
+LL | fn f() -> isize { fn f() -> isize {} pub f<
+   |                      -      ^^^^^ expected `isize`, found `()`
+   |                      |
+   |                      implicitly returns `()` as its body has no tail or `return` expression
+
+error: aborting due to 3 previous errors
+
+For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/parser/issues/issue-62894.rs b/tests/ui/parser/issues/issue-62894.rs
new file mode 100644
index 000000000..b9c0bf834
--- /dev/null
+++ b/tests/ui/parser/issues/issue-62894.rs
@@ -0,0 +1,7 @@
+// Regression test for #62894, shouldn't crash.
+// error-pattern: this file contains an unclosed delimiter
+// error-pattern: expected one of `(`, `[`, or `{`, found keyword `fn`
+
+fn f() { assert_eq!(f(), (), assert_eq!(assert_eq!
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-62894.stderr b/tests/ui/parser/issues/issue-62894.stderr
new file mode 100644
index 000000000..07a203bf4
--- /dev/null
+++ b/tests/ui/parser/issues/issue-62894.stderr
@@ -0,0 +1,50 @@
+error: this file contains an unclosed delimiter
+  --> $DIR/issue-62894.rs:7:14
+   |
+LL | fn f() { assert_eq!(f(), (), assert_eq!(assert_eq!
+   |        -           -                   - unclosed delimiter
+   |        |           |
+   |        |           unclosed delimiter
+   |        unclosed delimiter
+LL |
+LL | fn main() {}
+   |              ^
+
+error: this file contains an unclosed delimiter
+  --> $DIR/issue-62894.rs:7:14
+   |
+LL | fn f() { assert_eq!(f(), (), assert_eq!(assert_eq!
+   |        -           -                   - unclosed delimiter
+   |        |           |
+   |        |           unclosed delimiter
+   |        unclosed delimiter
+LL |
+LL | fn main() {}
+   |              ^
+
+error: this file contains an unclosed delimiter
+  --> $DIR/issue-62894.rs:7:14
+   |
+LL | fn f() { assert_eq!(f(), (), assert_eq!(assert_eq!
+   |        -           -                   - unclosed delimiter
+   |        |           |
+   |        |           unclosed delimiter
+   |        unclosed delimiter
+LL |
+LL | fn main() {}
+   |              ^
+
+error: expected one of `(`, `[`, or `{`, found keyword `fn`
+  --> $DIR/issue-62894.rs:7:1
+   |
+LL | fn f() { assert_eq!(f(), (), assert_eq!(assert_eq!
+   |                                                   - expected one of `(`, `[`, or `{`
+LL |
+LL | fn main() {}
+   | ^^ unexpected token
+  --> $SRC_DIR/core/src/macros/mod.rs:LL:COL
+   |
+   = note: while parsing argument for this `expr` macro fragment
+
+error: aborting due to 4 previous errors
+
diff --git a/tests/ui/parser/issues/issue-62895.rs b/tests/ui/parser/issues/issue-62895.rs
new file mode 100644
index 000000000..53f17405d
--- /dev/null
+++ b/tests/ui/parser/issues/issue-62895.rs
@@ -0,0 +1,11 @@
+fn main() {}
+
+fn v() -> isize { //~ ERROR mismatched types
+mod _ { //~ ERROR expected identifier
+pub fn g() -> isizee { //~ ERROR cannot find type `isizee` in this scope
+mod _ { //~ ERROR expected identifier
+pub    g() -> is //~ ERROR missing `fn` for function definition
+(), w20);
+}
+(), w20); //~ ERROR expected item, found `;`
+}
diff --git a/tests/ui/parser/issues/issue-62895.stderr b/tests/ui/parser/issues/issue-62895.stderr
new file mode 100644
index 000000000..2e7e500f4
--- /dev/null
+++ b/tests/ui/parser/issues/issue-62895.stderr
@@ -0,0 +1,47 @@
+error: expected identifier, found reserved identifier `_`
+  --> $DIR/issue-62895.rs:4:5
+   |
+LL | mod _ {
+   |     ^ expected identifier, found reserved identifier
+
+error: expected identifier, found reserved identifier `_`
+  --> $DIR/issue-62895.rs:6:5
+   |
+LL | mod _ {
+   |     ^ expected identifier, found reserved identifier
+
+error: missing `fn` for function definition
+  --> $DIR/issue-62895.rs:7:4
+   |
+LL | pub    g() -> is
+   |    ^^^^
+   |
+help: add `fn` here to parse `g` as a public function
+   |
+LL | pub fn g() -> is
+   |     ++
+
+error: expected item, found `;`
+  --> $DIR/issue-62895.rs:10:9
+   |
+LL | (), w20);
+   |         ^ help: remove this semicolon
+
+error[E0412]: cannot find type `isizee` in this scope
+  --> $DIR/issue-62895.rs:5:15
+   |
+LL | pub fn g() -> isizee {
+   |               ^^^^^^ help: a builtin type with a similar name exists: `isize`
+
+error[E0308]: mismatched types
+  --> $DIR/issue-62895.rs:3:11
+   |
+LL | fn v() -> isize {
+   |    -      ^^^^^ expected `isize`, found `()`
+   |    |
+   |    implicitly returns `()` as its body has no tail or `return` expression
+
+error: aborting due to 6 previous errors
+
+Some errors have detailed explanations: E0308, E0412.
+For more information about an error, try `rustc --explain E0308`.
diff --git a/tests/ui/parser/issues/issue-62913.rs b/tests/ui/parser/issues/issue-62913.rs
new file mode 100644
index 000000000..0db06f636
--- /dev/null
+++ b/tests/ui/parser/issues/issue-62913.rs
@@ -0,0 +1,4 @@
+"\u\\"
+//~^ ERROR incorrect unicode escape sequence
+//~| ERROR invalid trailing slash in literal
+//~| ERROR expected item, found `"\u\\"`
diff --git a/tests/ui/parser/issues/issue-62913.stderr b/tests/ui/parser/issues/issue-62913.stderr
new file mode 100644
index 000000000..6f385e8dc
--- /dev/null
+++ b/tests/ui/parser/issues/issue-62913.stderr
@@ -0,0 +1,22 @@
+error: incorrect unicode escape sequence
+  --> $DIR/issue-62913.rs:1:2
+   |
+LL | "\u\"
+   |  ^^^ incorrect unicode escape sequence
+   |
+   = help: format of unicode escape sequences is `\u{...}`
+
+error: invalid trailing slash in literal
+  --> $DIR/issue-62913.rs:1:5
+   |
+LL | "\u\"
+   |     ^ invalid trailing slash in literal
+
+error: expected item, found `"\u\"`
+  --> $DIR/issue-62913.rs:1:1
+   |
+LL | "\u\"
+   | ^^^^^^ expected item
+
+error: aborting due to 3 previous errors
+
diff --git a/tests/ui/parser/issues/issue-62973.rs b/tests/ui/parser/issues/issue-62973.rs
new file mode 100644
index 000000000..1c5d0c6f8
--- /dev/null
+++ b/tests/ui/parser/issues/issue-62973.rs
@@ -0,0 +1,8 @@
+// ignore-tidy-trailing-newlines
+// error-pattern: aborting due to 7 previous errors
+
+fn main() {}
+
+fn p() { match s { v, E { [) {) }
+
+
diff --git a/tests/ui/parser/issues/issue-62973.stderr b/tests/ui/parser/issues/issue-62973.stderr
new file mode 100644
index 000000000..4737bc718
--- /dev/null
+++ b/tests/ui/parser/issues/issue-62973.stderr
@@ -0,0 +1,83 @@
+error: this file contains an unclosed delimiter
+  --> $DIR/issue-62973.rs:8:2
+   |
+LL | fn p() { match s { v, E { [) {) }
+   |        -         - unclosed delimiter
+   |        |
+   |        unclosed delimiter
+LL |
+LL |
+   |  ^
+
+error: this file contains an unclosed delimiter
+  --> $DIR/issue-62973.rs:8:2
+   |
+LL | fn p() { match s { v, E { [) {) }
+   |        -         - unclosed delimiter
+   |        |
+   |        unclosed delimiter
+LL |
+LL |
+   |  ^
+
+error: expected one of `,`, `:`, or `}`, found `{`
+  --> $DIR/issue-62973.rs:6:8
+   |
+LL | fn p() { match s { v, E { [) {) }
+   |        ^       -        ^ expected one of `,`, `:`, or `}`
+   |        |       |
+   |        |       while parsing this struct
+   |        unclosed delimiter
+   |
+help: `}` may belong here
+   |
+LL | fn p() { match s { v, E} { [) {) }
+   |                        +
+help: try naming a field
+   |
+LL | fn p() { match s { v, E: E { [) {) }
+   |                       ++
+
+error: struct literals are not allowed here
+  --> $DIR/issue-62973.rs:6:16
+   |
+LL |   fn p() { match s { v, E { [) {) }
+   |  ________________^
+LL | |
+LL | |
+   | |_^
+   |
+help: surround the struct literal with parentheses
+   |
+LL ~ fn p() { match (s { v, E { [) {) }
+LL | 
+LL ~ )
+   |
+
+error: expected one of `.`, `?`, `{`, or an operator, found `}`
+  --> $DIR/issue-62973.rs:8:2
+   |
+LL | fn p() { match s { v, E { [) {) }
+   |          ----- while parsing this `match` expression
+LL |
+LL |
+   |  ^ expected one of `.`, `?`, `{`, or an operator
+
+error: mismatched closing delimiter: `)`
+  --> $DIR/issue-62973.rs:6:27
+   |
+LL | fn p() { match s { v, E { [) {) }
+   |                           ^^ mismatched closing delimiter
+   |                           |
+   |                           unclosed delimiter
+
+error: mismatched closing delimiter: `)`
+  --> $DIR/issue-62973.rs:6:30
+   |
+LL | fn p() { match s { v, E { [) {) }
+   |                              ^^ mismatched closing delimiter
+   |                              |
+   |                              unclosed delimiter
+
+error: aborting due to 7 previous errors
+
diff --git a/tests/ui/parser/issues/issue-63115-range-pat-interpolated.rs b/tests/ui/parser/issues/issue-63115-range-pat-interpolated.rs
new file mode 100644
index 000000000..b6e5091b6
--- /dev/null
+++ b/tests/ui/parser/issues/issue-63115-range-pat-interpolated.rs
@@ -0,0 +1,21 @@
+// check-pass
+
+#![feature(exclusive_range_pattern)]
+
+#![allow(ellipsis_inclusive_range_patterns)]
+
+fn main() {
+    macro_rules! mac_expr {
+        ($e:expr) => {
+            if let 2...$e = 3 {}
+            if let 2..=$e = 3 {}
+            if let 2..$e = 3 {}
+            if let ..$e = 3 {}
+            if let ..=$e = 3 {}
+            if let $e.. = 5 {}
+            if let $e..5 = 4 {}
+            if let $e..=5 = 4 {}
+        }
+    }
+    mac_expr!(4);
+}
diff --git a/tests/ui/parser/issues/issue-63116.rs b/tests/ui/parser/issues/issue-63116.rs
new file mode 100644
index 000000000..430bc1d71
--- /dev/null
+++ b/tests/ui/parser/issues/issue-63116.rs
@@ -0,0 +1,3 @@
+// fixed by #66361
+// error-pattern: aborting due to 3 previous errors
+impl W <s(f;Y(;]
diff --git a/tests/ui/parser/issues/issue-63116.stderr b/tests/ui/parser/issues/issue-63116.stderr
new file mode 100644
index 000000000..cfdd99d14
--- /dev/null
+++ b/tests/ui/parser/issues/issue-63116.stderr
@@ -0,0 +1,24 @@
+error: this file contains an unclosed delimiter
+  --> $DIR/issue-63116.rs:3:18
+   |
+LL | impl W <s(f;Y(;]
+   |          -       ^
+   |          |
+   |          unclosed delimiter
+
+error: expected one of `!`, `(`, `)`, `+`, `,`, `::`, or `<`, found `;`
+  --> $DIR/issue-63116.rs:3:12
+   |
+LL | impl W <s(f;Y(;]
+   |            ^ expected one of 7 possible tokens
+
+error: mismatched closing delimiter: `]`
+  --> $DIR/issue-63116.rs:3:14
+   |
+LL | impl W <s(f;Y(;]
+   |              ^ ^ mismatched closing delimiter
+   |              |
+   |              unclosed delimiter
+
+error: aborting due to 3 previous errors
+
diff --git a/tests/ui/parser/issues/issue-63135.rs b/tests/ui/parser/issues/issue-63135.rs
new file mode 100644
index 000000000..a5a8de854
--- /dev/null
+++ b/tests/ui/parser/issues/issue-63135.rs
@@ -0,0 +1,3 @@
+// error-pattern: aborting due to 5 previous errors
+
+fn i(n{...,f #
diff --git a/tests/ui/parser/issues/issue-63135.stderr b/tests/ui/parser/issues/issue-63135.stderr
new file mode 100644
index 000000000..80e9ac5be
--- /dev/null
+++ b/tests/ui/parser/issues/issue-63135.stderr
@@ -0,0 +1,43 @@
+error: this file contains an unclosed delimiter
+  --> $DIR/issue-63135.rs:3:16
+   |
+LL | fn i(n{...,f #
+   |     - -        ^
+   |     | |
+   |     | unclosed delimiter
+   |     unclosed delimiter
+
+error: this file contains an unclosed delimiter
+  --> $DIR/issue-63135.rs:3:16
+   |
+LL | fn i(n{...,f #
+   |     - -        ^
+   |     | |
+   |     | unclosed delimiter
+   |     unclosed delimiter
+
+error: expected field pattern, found `...`
+  --> $DIR/issue-63135.rs:3:8
+   |
+LL | fn i(n{...,f #
+   |        ^^^ help: to omit remaining fields, use one fewer `.`: `..`
+
+error: expected `}`, found `,`
+  --> $DIR/issue-63135.rs:3:11
+   |
+LL | fn i(n{...,f #
+   |        ---^
+   |        |  |
+   |        |  expected `}`
+   |        `..` must be at the end and cannot have a trailing comma
+
+error: expected one of `!` or `[`, found `}`
+  --> $DIR/issue-63135.rs:3:16
+   |
+LL | fn i(n{...,f #
+   |      -         ^ expected one of `!` or `[`
+   |      |
+   |      while parsing the fields for this pattern
+
+error: aborting due to 5 previous errors
+
diff --git a/tests/ui/parser/issues/issue-64732.rs b/tests/ui/parser/issues/issue-64732.rs
new file mode 100644
index 000000000..2db51ea60
--- /dev/null
+++ b/tests/ui/parser/issues/issue-64732.rs
@@ -0,0 +1,9 @@
+#![allow(unused)]
+fn main() {
+    let _foo = b'hello\0';
+    //~^ ERROR character literal may only contain one codepoint
+    //~| HELP if you meant to write a byte string literal, use double quotes
+    let _bar = 'hello';
+    //~^ ERROR character literal may only contain one codepoint
+    //~| HELP if you meant to write a `str` literal, use double quotes
+}
diff --git a/tests/ui/parser/issues/issue-64732.stderr b/tests/ui/parser/issues/issue-64732.stderr
new file mode 100644
index 000000000..804625493
--- /dev/null
+++ b/tests/ui/parser/issues/issue-64732.stderr
@@ -0,0 +1,24 @@
+error: character literal may only contain one codepoint
+  --> $DIR/issue-64732.rs:3:16
+   |
+LL |     let _foo = b'hello\0';
+   |                ^^^^^^^^^^
+   |
+help: if you meant to write a byte string literal, use double quotes
+   |
+LL |     let _foo = b"hello\0";
+   |                ~~~~~~~~~~
+
+error: character literal may only contain one codepoint
+  --> $DIR/issue-64732.rs:6:16
+   |
+LL |     let _bar = 'hello';
+   |                ^^^^^^^
+   |
+help: if you meant to write a `str` literal, use double quotes
+   |
+LL |     let _bar = "hello";
+   |                ~~~~~~~
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/issues/issue-65041-empty-vis-matcher-in-enum.rs b/tests/ui/parser/issues/issue-65041-empty-vis-matcher-in-enum.rs
new file mode 100644
index 000000000..ef89e31d8
--- /dev/null
+++ b/tests/ui/parser/issues/issue-65041-empty-vis-matcher-in-enum.rs
@@ -0,0 +1,28 @@
+// check-pass
+
+// Here we check that a `:vis` macro matcher subsititued for the empty visibility
+// (`VisibilityKind::Inherited`) is accepted when used before an enum variant.
+
+fn main() {}
+
+macro_rules! mac_variant {
+    ($vis:vis MARKER) => {
+        enum Enum {
+            $vis Unit,
+
+            $vis Tuple(u8, u16),
+
+            $vis Struct { f: u8 },
+        }
+    }
+}
+
+mac_variant!(MARKER);
+
+// We also accept visibilities on variants syntactically but not semantically.
+#[cfg(FALSE)]
+enum E {
+    pub U,
+    pub(crate) T(u8),
+    pub(super) T { f: String }
+}
diff --git a/tests/ui/parser/issues/issue-65041-empty-vis-matcher-in-trait.rs b/tests/ui/parser/issues/issue-65041-empty-vis-matcher-in-trait.rs
new file mode 100644
index 000000000..b08767b21
--- /dev/null
+++ b/tests/ui/parser/issues/issue-65041-empty-vis-matcher-in-trait.rs
@@ -0,0 +1,28 @@
+// check-pass
+
+// Here we check that a `:vis` macro matcher subsititued for the empty visibility
+// (`VisibilityKind::Inherited`) is accepted when used before an item in a trait.
+
+fn main() {}
+
+macro_rules! mac_in_trait {
+    ($vis:vis MARKER) => {
+        $vis fn beta() {}
+
+        $vis const GAMMA: u8;
+
+        $vis type Delta;
+    }
+}
+
+trait Alpha {
+    mac_in_trait!(MARKER);
+}
+
+// We also accept visibilities on items in traits syntactically but not semantically.
+#[cfg(FALSE)]
+trait Foo {
+    pub fn bar();
+    pub(crate) type baz;
+    pub(super) const QUUX: u8;
+}
diff --git a/tests/ui/parser/issues/issue-65122-mac-invoc-in-mut-patterns.rs b/tests/ui/parser/issues/issue-65122-mac-invoc-in-mut-patterns.rs
new file mode 100644
index 000000000..30f3781bf
--- /dev/null
+++ b/tests/ui/parser/issues/issue-65122-mac-invoc-in-mut-patterns.rs
@@ -0,0 +1,26 @@
+// Regression test; used to ICE with 'visit_mac_call disabled by default' due to a
+// `MutVisitor` in `fn make_all_value_bindings_mutable` (`parse/parser/pat.rs`).
+
+macro_rules! mac1 {
+    ($eval:expr) => {
+        let mut $eval = ();
+        //~^ ERROR `mut` must be followed by a named binding
+    };
+}
+
+macro_rules! mac2 {
+    ($eval:pat) => {
+        let mut $eval = ();
+        //~^ ERROR `mut` must be followed by a named binding
+        //~| ERROR expected identifier, found `does_not_exist!()`
+    };
+}
+
+fn foo() {
+    mac1! { does_not_exist!() }
+    //~^ ERROR cannot find macro `does_not_exist` in this scope
+    mac2! { does_not_exist!() }
+    //~^ ERROR cannot find macro `does_not_exist` in this scope
+}
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-65122-mac-invoc-in-mut-patterns.stderr b/tests/ui/parser/issues/issue-65122-mac-invoc-in-mut-patterns.stderr
new file mode 100644
index 000000000..8c032e588
--- /dev/null
+++ b/tests/ui/parser/issues/issue-65122-mac-invoc-in-mut-patterns.stderr
@@ -0,0 +1,49 @@
+error: `mut` must be followed by a named binding
+  --> $DIR/issue-65122-mac-invoc-in-mut-patterns.rs:6:13
+   |
+LL |         let mut $eval = ();
+   |             ^^^^^^^^^ help: remove the `mut` prefix: `does_not_exist!()`
+...
+LL |     mac1! { does_not_exist!() }
+   |     --------------------------- in this macro invocation
+   |
+   = note: `mut` may be followed by `variable` and `variable @ pattern`
+   = note: this error originates in the macro `mac1` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: expected identifier, found `does_not_exist!()`
+  --> $DIR/issue-65122-mac-invoc-in-mut-patterns.rs:13:17
+   |
+LL |         let mut $eval = ();
+   |                 ^^^^^ expected identifier
+...
+LL |     mac2! { does_not_exist!() }
+   |     --------------------------- in this macro invocation
+   |
+   = note: this error originates in the macro `mac2` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: `mut` must be followed by a named binding
+  --> $DIR/issue-65122-mac-invoc-in-mut-patterns.rs:13:13
+   |
+LL |         let mut $eval = ();
+   |             ^^^ help: remove the `mut` prefix: `does_not_exist!()`
+...
+LL |     mac2! { does_not_exist!() }
+   |     --------------------------- in this macro invocation
+   |
+   = note: `mut` may be followed by `variable` and `variable @ pattern`
+   = note: this error originates in the macro `mac2` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: cannot find macro `does_not_exist` in this scope
+  --> $DIR/issue-65122-mac-invoc-in-mut-patterns.rs:22:13
+   |
+LL |     mac2! { does_not_exist!() }
+   |             ^^^^^^^^^^^^^^
+
+error: cannot find macro `does_not_exist` in this scope
+  --> $DIR/issue-65122-mac-invoc-in-mut-patterns.rs:20:13
+   |
+LL |     mac1! { does_not_exist!() }
+   |             ^^^^^^^^^^^^^^
+
+error: aborting due to 5 previous errors
+
diff --git a/tests/ui/parser/issues/issue-65257-invalid-var-decl-recovery.rs b/tests/ui/parser/issues/issue-65257-invalid-var-decl-recovery.rs
new file mode 100644
index 000000000..c1826f8ca
--- /dev/null
+++ b/tests/ui/parser/issues/issue-65257-invalid-var-decl-recovery.rs
@@ -0,0 +1,21 @@
+fn main() {
+    auto n = 0;//~ ERROR invalid variable declaration
+    //~^ HELP write `let` instead of `auto` to introduce a new variable
+    auto m;//~ ERROR invalid variable declaration
+    //~^ HELP write `let` instead of `auto` to introduce a new variable
+    m = 0;
+
+    var n = 0;//~ ERROR invalid variable declaration
+    //~^ HELP write `let` instead of `var` to introduce a new variable
+    var m;//~ ERROR invalid variable declaration
+    //~^ HELP write `let` instead of `var` to introduce a new variable
+    m = 0;
+
+    mut n = 0;//~ ERROR invalid variable declaration
+    //~^ HELP missing keyword
+    mut var;//~ ERROR invalid variable declaration
+    //~^ HELP missing keyword
+    var = 0;
+
+    let _recovery_witness: () = 0; //~ ERROR mismatched types
+}
diff --git a/tests/ui/parser/issues/issue-65257-invalid-var-decl-recovery.stderr b/tests/ui/parser/issues/issue-65257-invalid-var-decl-recovery.stderr
new file mode 100644
index 000000000..0a88dd2c4
--- /dev/null
+++ b/tests/ui/parser/issues/issue-65257-invalid-var-decl-recovery.stderr
@@ -0,0 +1,67 @@
+error: invalid variable declaration
+  --> $DIR/issue-65257-invalid-var-decl-recovery.rs:2:5
+   |
+LL |     auto n = 0;
+   |     ^^^^
+   |
+help: write `let` instead of `auto` to introduce a new variable
+   |
+LL |     let n = 0;
+   |     ~~~
+
+error: invalid variable declaration
+  --> $DIR/issue-65257-invalid-var-decl-recovery.rs:4:5
+   |
+LL |     auto m;
+   |     ^^^^
+   |
+help: write `let` instead of `auto` to introduce a new variable
+   |
+LL |     let m;
+   |     ~~~
+
+error: invalid variable declaration
+  --> $DIR/issue-65257-invalid-var-decl-recovery.rs:8:5
+   |
+LL |     var n = 0;
+   |     ^^^
+   |
+help: write `let` instead of `var` to introduce a new variable
+   |
+LL |     let n = 0;
+   |     ~~~
+
+error: invalid variable declaration
+  --> $DIR/issue-65257-invalid-var-decl-recovery.rs:10:5
+   |
+LL |     var m;
+   |     ^^^
+   |
+help: write `let` instead of `var` to introduce a new variable
+   |
+LL |     let m;
+   |     ~~~
+
+error: invalid variable declaration
+  --> $DIR/issue-65257-invalid-var-decl-recovery.rs:14:5
+   |
+LL |     mut n = 0;
+   |     ^^^ help: missing keyword: `let mut`
+
+error: invalid variable declaration
+  --> $DIR/issue-65257-invalid-var-decl-recovery.rs:16:5
+   |
+LL |     mut var;
+   |     ^^^ help: missing keyword: `let mut`
+
+error[E0308]: mismatched types
+  --> $DIR/issue-65257-invalid-var-decl-recovery.rs:20:33
+   |
+LL |     let _recovery_witness: () = 0;
+   |                            --   ^ expected `()`, found integer
+   |                            |
+   |                            expected due to this
+
+error: aborting due to 7 previous errors
+
+For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/parser/issues/issue-65846-rollback-gating-failing-matcher.rs b/tests/ui/parser/issues/issue-65846-rollback-gating-failing-matcher.rs
new file mode 100644
index 000000000..76c07bbfd
--- /dev/null
+++ b/tests/ui/parser/issues/issue-65846-rollback-gating-failing-matcher.rs
@@ -0,0 +1,15 @@
+// run-pass
+
+// Test that failing macro matchers will not cause pre-expansion errors
+// even though they use a feature that is pre-expansion gated.
+
+#[allow(unused_macro_rules)]
+macro_rules! m {
+    ($e:expr) => { 0 }; // This fails on the input below due to `, foo`.
+    ($e:expr,) => { 1 }; // This also fails to match due to `foo`.
+    (box $e:expr, foo) => { 2 }; // Successful matcher, we should get `2`.
+}
+
+fn main() {
+    assert_eq!(2, m!(box 42, foo));
+}
diff --git a/tests/ui/parser/issues/issue-6610.rs b/tests/ui/parser/issues/issue-6610.rs
new file mode 100644
index 000000000..9ed5a6122
--- /dev/null
+++ b/tests/ui/parser/issues/issue-6610.rs
@@ -0,0 +1,3 @@
+trait Foo { fn a() } //~ ERROR expected one of `->`, `;`, `where`, or `{`, found `}`
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-6610.stderr b/tests/ui/parser/issues/issue-6610.stderr
new file mode 100644
index 000000000..4a3bc7525
--- /dev/null
+++ b/tests/ui/parser/issues/issue-6610.stderr
@@ -0,0 +1,10 @@
+error: expected one of `->`, `;`, `where`, or `{`, found `}`
+  --> $DIR/issue-6610.rs:1:20
+   |
+LL | trait Foo { fn a() }
+   |                -   ^ expected one of `->`, `;`, `where`, or `{`
+   |                |
+   |                while parsing this `fn`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-66357-unexpected-unreachable.rs b/tests/ui/parser/issues/issue-66357-unexpected-unreachable.rs
new file mode 100644
index 000000000..aed428bfc
--- /dev/null
+++ b/tests/ui/parser/issues/issue-66357-unexpected-unreachable.rs
@@ -0,0 +1,14 @@
+// The problem in #66357 was that the call trace:
+//
+// - parse_fn_block_decl
+// - expect_or
+// - unexpected
+// - expect_one_of
+// - expected_one_of_not_found
+// - recover_closing_delimiter
+//
+// ended up bubbling up `Ok(true)` to `unexpected` which then used `unreachable!()`.
+
+fn f() { |[](* }
+//~^ ERROR expected one of `,` or `:`, found `(`
+//~| ERROR expected one of `&`, `(`, `)`, `-`, `...`, `..=`, `..`, `[`, `_`, `box`, `mut`, `ref`, `|`, identifier, or path, found `*`
diff --git a/tests/ui/parser/issues/issue-66357-unexpected-unreachable.stderr b/tests/ui/parser/issues/issue-66357-unexpected-unreachable.stderr
new file mode 100644
index 000000000..6cbab855c
--- /dev/null
+++ b/tests/ui/parser/issues/issue-66357-unexpected-unreachable.stderr
@@ -0,0 +1,16 @@
+error: expected one of `,` or `:`, found `(`
+  --> $DIR/issue-66357-unexpected-unreachable.rs:12:13
+   |
+LL | fn f() { |[](* }
+   |             ^ expected one of `,` or `:`
+
+error: expected one of `&`, `(`, `)`, `-`, `...`, `..=`, `..`, `[`, `_`, `box`, `mut`, `ref`, `|`, identifier, or path, found `*`
+  --> $DIR/issue-66357-unexpected-unreachable.rs:12:13
+   |
+LL | fn f() { |[](* }
+   |             ^^ help: `)` may belong here
+   |             |
+   |             unclosed delimiter
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/issues/issue-66473.rs b/tests/ui/parser/issues/issue-66473.rs
new file mode 100644
index 000000000..9db4521bb
--- /dev/null
+++ b/tests/ui/parser/issues/issue-66473.rs
diff --git a/tests/ui/parser/issues/issue-66473.stderr b/tests/ui/parser/issues/issue-66473.stderr
new file mode 100644
index 000000000..0e8b0a5da
--- /dev/null
+++ b/tests/ui/parser/issues/issue-66473.stderr
diff --git a/tests/ui/parser/issues/issue-67146-negative-outlives-bound-syntactic-fail.fixed b/tests/ui/parser/issues/issue-67146-negative-outlives-bound-syntactic-fail.fixed
new file mode 100644
index 000000000..95019b278
--- /dev/null
+++ b/tests/ui/parser/issues/issue-67146-negative-outlives-bound-syntactic-fail.fixed
@@ -0,0 +1,14 @@
+// run-rustfix
+
+// In this regression test for #67146, we check that the
+// negative outlives bound `!'a` is rejected by the parser.
+// This regression was first introduced in PR #57364.
+
+fn main() {}
+
+pub fn f1<T>() {}
+//~^ ERROR negative bounds are not supported
+pub fn f2<'a, T: Ord>() {}
+//~^ ERROR negative bounds are not supported
+pub fn f3<'a, T: Ord>() {}
+//~^ ERROR negative bounds are not supported
diff --git a/tests/ui/parser/issues/issue-67146-negative-outlives-bound-syntactic-fail.rs b/tests/ui/parser/issues/issue-67146-negative-outlives-bound-syntactic-fail.rs
new file mode 100644
index 000000000..82f54f8fa
--- /dev/null
+++ b/tests/ui/parser/issues/issue-67146-negative-outlives-bound-syntactic-fail.rs
@@ -0,0 +1,14 @@
+// run-rustfix
+
+// In this regression test for #67146, we check that the
+// negative outlives bound `!'a` is rejected by the parser.
+// This regression was first introduced in PR #57364.
+
+fn main() {}
+
+pub fn f1<T: !'static>() {}
+//~^ ERROR negative bounds are not supported
+pub fn f2<'a, T: Ord + !'a>() {}
+//~^ ERROR negative bounds are not supported
+pub fn f3<'a, T: !'a + Ord>() {}
+//~^ ERROR negative bounds are not supported
diff --git a/tests/ui/parser/issues/issue-67146-negative-outlives-bound-syntactic-fail.stderr b/tests/ui/parser/issues/issue-67146-negative-outlives-bound-syntactic-fail.stderr
new file mode 100644
index 000000000..a4a422948
--- /dev/null
+++ b/tests/ui/parser/issues/issue-67146-negative-outlives-bound-syntactic-fail.stderr
@@ -0,0 +1,20 @@
+error: negative bounds are not supported
+  --> $DIR/issue-67146-negative-outlives-bound-syntactic-fail.rs:9:12
+   |
+LL | pub fn f1<T: !'static>() {}
+   |            ^^^^^^^^^^ negative bounds are not supported
+
+error: negative bounds are not supported
+  --> $DIR/issue-67146-negative-outlives-bound-syntactic-fail.rs:11:22
+   |
+LL | pub fn f2<'a, T: Ord + !'a>() {}
+   |                      ^^^^^ negative bounds are not supported
+
+error: negative bounds are not supported
+  --> $DIR/issue-67146-negative-outlives-bound-syntactic-fail.rs:13:16
+   |
+LL | pub fn f3<'a, T: !'a + Ord>() {}
+   |                ^^^^^ negative bounds are not supported
+
+error: aborting due to 3 previous errors
+
diff --git a/tests/ui/parser/issues/issue-67377-invalid-syntax-in-enum-discriminant.rs b/tests/ui/parser/issues/issue-67377-invalid-syntax-in-enum-discriminant.rs
new file mode 100644
index 000000000..87222ef4b
--- /dev/null
+++ b/tests/ui/parser/issues/issue-67377-invalid-syntax-in-enum-discriminant.rs
@@ -0,0 +1,35 @@
+mod a {
+    use std::marker::PhantomData;
+
+    enum Bug {
+        V = [PhantomData; { [ () ].len() ].len() as isize,
+        //~^ ERROR mismatched closing delimiter: `]`
+        //~| ERROR mismatched closing delimiter: `]`
+        //~| ERROR mismatched closing delimiter: `]`
+        //~| ERROR mismatched closing delimiter: `]`
+    }
+}
+
+mod b {
+    enum Bug {
+        V = [Vec::new; { [].len()  ].len() as isize,
+        //~^ ERROR mismatched closing delimiter: `]`
+        //~| ERROR mismatched closing delimiter: `]`
+        //~| ERROR mismatched closing delimiter: `]`
+        //~| ERROR mismatched closing delimiter: `]`
+        //~| ERROR type annotations needed
+    }
+}
+
+mod c {
+    enum Bug {
+        V = [Vec::new; { [0].len() ].len() as isize,
+        //~^ ERROR mismatched closing delimiter: `]`
+        //~| ERROR mismatched closing delimiter: `]`
+        //~| ERROR mismatched closing delimiter: `]`
+        //~| ERROR mismatched closing delimiter: `]`
+        //~| ERROR type annotations needed
+    }
+}
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-67377-invalid-syntax-in-enum-discriminant.stderr b/tests/ui/parser/issues/issue-67377-invalid-syntax-in-enum-discriminant.stderr
new file mode 100644
index 000000000..a00f37ed6
--- /dev/null
+++ b/tests/ui/parser/issues/issue-67377-invalid-syntax-in-enum-discriminant.stderr
@@ -0,0 +1,128 @@
+error: mismatched closing delimiter: `]`
+  --> $DIR/issue-67377-invalid-syntax-in-enum-discriminant.rs:5:27
+   |
+LL |         V = [PhantomData; { [ () ].len() ].len() as isize,
+   |             -             ^              ^ mismatched closing delimiter
+   |             |             |
+   |             |             unclosed delimiter
+   |             closing delimiter possibly meant for this
+
+error: mismatched closing delimiter: `]`
+  --> $DIR/issue-67377-invalid-syntax-in-enum-discriminant.rs:15:24
+   |
+LL |         V = [Vec::new; { [].len()  ].len() as isize,
+   |             -          ^           ^ mismatched closing delimiter
+   |             |          |
+   |             |          unclosed delimiter
+   |             closing delimiter possibly meant for this
+
+error: mismatched closing delimiter: `]`
+  --> $DIR/issue-67377-invalid-syntax-in-enum-discriminant.rs:26:24
+   |
+LL |         V = [Vec::new; { [0].len() ].len() as isize,
+   |             -          ^           ^ mismatched closing delimiter
+   |             |          |
+   |             |          unclosed delimiter
+   |             closing delimiter possibly meant for this
+
+error: mismatched closing delimiter: `]`
+  --> $DIR/issue-67377-invalid-syntax-in-enum-discriminant.rs:5:27
+   |
+LL |         V = [PhantomData; { [ () ].len() ].len() as isize,
+   |             -             ^              ^ mismatched closing delimiter
+   |             |             |
+   |             |             unclosed delimiter
+   |             closing delimiter possibly meant for this
+
+error: mismatched closing delimiter: `]`
+  --> $DIR/issue-67377-invalid-syntax-in-enum-discriminant.rs:15:24
+   |
+LL |         V = [Vec::new; { [].len()  ].len() as isize,
+   |             -          ^           ^ mismatched closing delimiter
+   |             |          |
+   |             |          unclosed delimiter
+   |             closing delimiter possibly meant for this
+
+error: mismatched closing delimiter: `]`
+  --> $DIR/issue-67377-invalid-syntax-in-enum-discriminant.rs:26:24
+   |
+LL |         V = [Vec::new; { [0].len() ].len() as isize,
+   |             -          ^           ^ mismatched closing delimiter
+   |             |          |
+   |             |          unclosed delimiter
+   |             closing delimiter possibly meant for this
+
+error: mismatched closing delimiter: `]`
+  --> $DIR/issue-67377-invalid-syntax-in-enum-discriminant.rs:5:27
+   |
+LL |         V = [PhantomData; { [ () ].len() ].len() as isize,
+   |             -             ^              ^ mismatched closing delimiter
+   |             |             |
+   |             |             unclosed delimiter
+   |             closing delimiter possibly meant for this
+
+error: mismatched closing delimiter: `]`
+  --> $DIR/issue-67377-invalid-syntax-in-enum-discriminant.rs:15:24
+   |
+LL |         V = [Vec::new; { [].len()  ].len() as isize,
+   |             -          ^           ^ mismatched closing delimiter
+   |             |          |
+   |             |          unclosed delimiter
+   |             closing delimiter possibly meant for this
+
+error: mismatched closing delimiter: `]`
+  --> $DIR/issue-67377-invalid-syntax-in-enum-discriminant.rs:26:24
+   |
+LL |         V = [Vec::new; { [0].len() ].len() as isize,
+   |             -          ^           ^ mismatched closing delimiter
+   |             |          |
+   |             |          unclosed delimiter
+   |             closing delimiter possibly meant for this
+
+error: mismatched closing delimiter: `]`
+  --> $DIR/issue-67377-invalid-syntax-in-enum-discriminant.rs:5:27
+   |
+LL |         V = [PhantomData; { [ () ].len() ].len() as isize,
+   |             -             ^              ^ mismatched closing delimiter
+   |             |             |
+   |             |             unclosed delimiter
+   |             closing delimiter possibly meant for this
+
+error: mismatched closing delimiter: `]`
+  --> $DIR/issue-67377-invalid-syntax-in-enum-discriminant.rs:15:24
+   |
+LL |         V = [Vec::new; { [].len()  ].len() as isize,
+   |             -          ^           ^ mismatched closing delimiter
+   |             |          |
+   |             |          unclosed delimiter
+   |             closing delimiter possibly meant for this
+
+error: mismatched closing delimiter: `]`
+  --> $DIR/issue-67377-invalid-syntax-in-enum-discriminant.rs:26:24
+   |
+LL |         V = [Vec::new; { [0].len() ].len() as isize,
+   |             -          ^           ^ mismatched closing delimiter
+   |             |          |
+   |             |          unclosed delimiter
+   |             closing delimiter possibly meant for this
+
+error[E0282]: type annotations needed
+  --> $DIR/issue-67377-invalid-syntax-in-enum-discriminant.rs:15:26
+   |
+LL |         V = [Vec::new; { [].len()  ].len() as isize,
+   |                          ^^ cannot infer type for type parameter `T`
+
+error[E0282]: type annotations needed
+  --> $DIR/issue-67377-invalid-syntax-in-enum-discriminant.rs:26:14
+   |
+LL |         V = [Vec::new; { [0].len() ].len() as isize,
+   |              ^^^^^^^^ cannot infer type of the type parameter `T` declared on the struct `Vec`
+   |
+help: consider specifying the generic argument
+   |
+LL |         V = [Vec::<T>::new; { [0].len() ].len() as isize,
+   |                 +++++
+
+error: aborting due to 14 previous errors
+
+For more information about this error, try `rustc --explain E0282`.
diff --git a/tests/ui/parser/issues/issue-68000-unicode-ident-after-missing-comma.rs b/tests/ui/parser/issues/issue-68000-unicode-ident-after-missing-comma.rs
new file mode 100644
index 000000000..3c49a5a97
--- /dev/null
+++ b/tests/ui/parser/issues/issue-68000-unicode-ident-after-missing-comma.rs
@@ -0,0 +1,6 @@
+pub struct Foo {
+    pub bar: Vec<i32>ö
+    //~^ ERROR expected `,`, or `}`, found `ö`
+} //~ ERROR expected `:`, found `}`
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-68000-unicode-ident-after-missing-comma.stderr b/tests/ui/parser/issues/issue-68000-unicode-ident-after-missing-comma.stderr
new file mode 100644
index 000000000..adabb6859
--- /dev/null
+++ b/tests/ui/parser/issues/issue-68000-unicode-ident-after-missing-comma.stderr
@@ -0,0 +1,19 @@
+error: expected `,`, or `}`, found `ö`
+  --> $DIR/issue-68000-unicode-ident-after-missing-comma.rs:2:22
+   |
+LL |     pub bar: Vec<i32>ö
+   |                      ^ help: try adding a comma: `,`
+
+error: expected `:`, found `}`
+  --> $DIR/issue-68000-unicode-ident-after-missing-comma.rs:4:1
+   |
+LL | pub struct Foo {
+   |            --- while parsing this struct
+LL |     pub bar: Vec<i32>ö
+   |                       - expected `:`
+LL |
+LL | }
+   | ^ unexpected token
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/issues/issue-68629.rs b/tests/ui/parser/issues/issue-68629.rs
new file mode 100644
index 000000000..672a31f12
--- /dev/null
+++ b/tests/ui/parser/issues/issue-68629.rs
diff --git a/tests/ui/parser/issues/issue-68629.stderr b/tests/ui/parser/issues/issue-68629.stderr
new file mode 100644
index 000000000..43a903e6c
--- /dev/null
+++ b/tests/ui/parser/issues/issue-68629.stderr
diff --git a/tests/ui/parser/issues/issue-68730.rs b/tests/ui/parser/issues/issue-68730.rs
new file mode 100644
index 000000000..20e18b4bc
--- /dev/null
+++ b/tests/ui/parser/issues/issue-68730.rs
diff --git a/tests/ui/parser/issues/issue-68730.stderr b/tests/ui/parser/issues/issue-68730.stderr
new file mode 100644
index 000000000..5bca5bbeb
--- /dev/null
+++ b/tests/ui/parser/issues/issue-68730.stderr
diff --git a/tests/ui/parser/issues/issue-68788-in-trait-item-propagation.rs b/tests/ui/parser/issues/issue-68788-in-trait-item-propagation.rs
new file mode 100644
index 000000000..7c3dd1d5a
--- /dev/null
+++ b/tests/ui/parser/issues/issue-68788-in-trait-item-propagation.rs
@@ -0,0 +1,21 @@
+// Make sure we don't propagate restrictions on trait impl items to items inside them.
+
+// check-pass
+// edition:2018
+
+fn main() {}
+
+trait X {
+    fn foo();
+}
+
+impl X for () {
+    fn foo() {
+        struct S;
+        impl S {
+            pub const X: u8 = 0;
+            pub const fn bar() {}
+            async fn qux() {}
+        }
+    }
+}
diff --git a/tests/ui/parser/issues/issue-68890-2.rs b/tests/ui/parser/issues/issue-68890-2.rs
new file mode 100644
index 000000000..29c123521
--- /dev/null
+++ b/tests/ui/parser/issues/issue-68890-2.rs
@@ -0,0 +1,5 @@
+fn main() {}
+
+type X<'a> = (?'a) +;
+//~^ ERROR `?` may only modify trait bounds, not lifetime bounds
+//~| ERROR at least one trait is required for an object type
diff --git a/tests/ui/parser/issues/issue-68890-2.stderr b/tests/ui/parser/issues/issue-68890-2.stderr
new file mode 100644
index 000000000..d9fb7beeb
--- /dev/null
+++ b/tests/ui/parser/issues/issue-68890-2.stderr
@@ -0,0 +1,15 @@
+error: `?` may only modify trait bounds, not lifetime bounds
+  --> $DIR/issue-68890-2.rs:3:15
+   |
+LL | type X<'a> = (?'a) +;
+   |               ^
+
+error[E0224]: at least one trait is required for an object type
+  --> $DIR/issue-68890-2.rs:3:14
+   |
+LL | type X<'a> = (?'a) +;
+   |              ^^^^^^^
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0224`.
diff --git a/tests/ui/parser/issues/issue-68890.rs b/tests/ui/parser/issues/issue-68890.rs
new file mode 100644
index 000000000..bab4ed7f8
--- /dev/null
+++ b/tests/ui/parser/issues/issue-68890.rs
@@ -0,0 +1,4 @@
+enum e{A((?'a a+?+l))}
+//~^ ERROR `?` may only modify trait bounds, not lifetime bounds
+//~| ERROR expected one of `)`, `+`, or `,`
+//~| ERROR expected item, found `)`
diff --git a/tests/ui/parser/issues/issue-68890.stderr b/tests/ui/parser/issues/issue-68890.stderr
new file mode 100644
index 000000000..2a3bf6b41
--- /dev/null
+++ b/tests/ui/parser/issues/issue-68890.stderr
@@ -0,0 +1,20 @@
+error: `?` may only modify trait bounds, not lifetime bounds
+  --> $DIR/issue-68890.rs:1:11
+   |
+LL | enum e{A((?'a a+?+l))}
+   |           ^
+
+error: expected one of `)`, `+`, or `,`, found `a`
+  --> $DIR/issue-68890.rs:1:15
+   |
+LL | enum e{A((?'a a+?+l))}
+   |               ^ expected one of `)`, `+`, or `,`
+
+error: expected item, found `)`
+  --> $DIR/issue-68890.rs:1:21
+   |
+LL | enum e{A((?'a a+?+l))}
+   |                     ^ expected item
+
+error: aborting due to 3 previous errors
+
diff --git a/tests/ui/parser/issues/issue-70050-ntliteral-accepts-negated-lit.rs b/tests/ui/parser/issues/issue-70050-ntliteral-accepts-negated-lit.rs
new file mode 100644
index 000000000..aca9d9eb0
--- /dev/null
+++ b/tests/ui/parser/issues/issue-70050-ntliteral-accepts-negated-lit.rs
@@ -0,0 +1,16 @@
+// check-pass
+
+macro_rules! foo {
+    ($a:literal) => {
+        bar!($a)
+    };
+}
+
+macro_rules! bar {
+    ($b:literal) => {};
+}
+
+fn main() {
+    foo!(-2);
+    bar!(-2);
+}
diff --git a/tests/ui/parser/issues/issue-70388-recover-dotdotdot-rest-pat.rs b/tests/ui/parser/issues/issue-70388-recover-dotdotdot-rest-pat.rs
new file mode 100644
index 000000000..ca8abd78c
--- /dev/null
+++ b/tests/ui/parser/issues/issue-70388-recover-dotdotdot-rest-pat.rs
@@ -0,0 +1,7 @@
+struct Foo(i32);
+
+fn main() {
+    let Foo(...) = Foo(0); //~ ERROR unexpected `...`
+    let [_, ..., _] = [0, 1]; //~ ERROR unexpected `...`
+    let _recovery_witness: () = 0; //~ ERROR mismatched types
+}
diff --git a/tests/ui/parser/issues/issue-70388-recover-dotdotdot-rest-pat.stderr b/tests/ui/parser/issues/issue-70388-recover-dotdotdot-rest-pat.stderr
new file mode 100644
index 000000000..4961e8fc0
--- /dev/null
+++ b/tests/ui/parser/issues/issue-70388-recover-dotdotdot-rest-pat.stderr
@@ -0,0 +1,29 @@
+error: unexpected `...`
+  --> $DIR/issue-70388-recover-dotdotdot-rest-pat.rs:4:13
+   |
+LL |     let Foo(...) = Foo(0);
+   |             ^^^
+   |             |
+   |             not a valid pattern
+   |             help: for a rest pattern, use `..` instead of `...`
+
+error: unexpected `...`
+  --> $DIR/issue-70388-recover-dotdotdot-rest-pat.rs:5:13
+   |
+LL |     let [_, ..., _] = [0, 1];
+   |             ^^^
+   |             |
+   |             not a valid pattern
+   |             help: for a rest pattern, use `..` instead of `...`
+
+error[E0308]: mismatched types
+  --> $DIR/issue-70388-recover-dotdotdot-rest-pat.rs:6:33
+   |
+LL |     let _recovery_witness: () = 0;
+   |                            --   ^ expected `()`, found integer
+   |                            |
+   |                            expected due to this
+
+error: aborting due to 3 previous errors
+
+For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/parser/issues/issue-70388-without-witness.fixed b/tests/ui/parser/issues/issue-70388-without-witness.fixed
new file mode 100644
index 000000000..8d981405e
--- /dev/null
+++ b/tests/ui/parser/issues/issue-70388-without-witness.fixed
@@ -0,0 +1,9 @@
+// run-rustfix
+// This is for checking if we can apply suggestions as-is.
+
+pub struct Foo(#[allow(unused_tuple_struct_fields)] i32);
+
+fn main() {
+    let Foo(..) = Foo(0); //~ ERROR unexpected `...`
+    let [_, .., _] = [0, 1]; //~ ERROR unexpected `...`
+}
diff --git a/tests/ui/parser/issues/issue-70388-without-witness.rs b/tests/ui/parser/issues/issue-70388-without-witness.rs
new file mode 100644
index 000000000..bf3607308
--- /dev/null
+++ b/tests/ui/parser/issues/issue-70388-without-witness.rs
@@ -0,0 +1,9 @@
+// run-rustfix
+// This is for checking if we can apply suggestions as-is.
+
+pub struct Foo(#[allow(unused_tuple_struct_fields)] i32);
+
+fn main() {
+    let Foo(...) = Foo(0); //~ ERROR unexpected `...`
+    let [_, ..., _] = [0, 1]; //~ ERROR unexpected `...`
+}
diff --git a/tests/ui/parser/issues/issue-70388-without-witness.stderr b/tests/ui/parser/issues/issue-70388-without-witness.stderr
new file mode 100644
index 000000000..b750ad4c6
--- /dev/null
+++ b/tests/ui/parser/issues/issue-70388-without-witness.stderr
@@ -0,0 +1,20 @@
+error: unexpected `...`
+  --> $DIR/issue-70388-without-witness.rs:7:13
+   |
+LL |     let Foo(...) = Foo(0);
+   |             ^^^
+   |             |
+   |             not a valid pattern
+   |             help: for a rest pattern, use `..` instead of `...`
+
+error: unexpected `...`
+  --> $DIR/issue-70388-without-witness.rs:8:13
+   |
+LL |     let [_, ..., _] = [0, 1];
+   |             ^^^
+   |             |
+   |             not a valid pattern
+   |             help: for a rest pattern, use `..` instead of `...`
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/issues/issue-70549-resolve-after-recovered-self-ctor.rs b/tests/ui/parser/issues/issue-70549-resolve-after-recovered-self-ctor.rs
new file mode 100644
index 000000000..aeccd0d9f
--- /dev/null
+++ b/tests/ui/parser/issues/issue-70549-resolve-after-recovered-self-ctor.rs
@@ -0,0 +1,18 @@
+struct S {}
+
+impl S {
+    fn foo(&mur Self) {}
+    //~^ ERROR expected identifier, found keyword `Self`
+    //~| ERROR expected one of `:`, `@`
+    //~| ERROR the `Self` constructor can only be used with
+    fn bar(&'static mur Self) {}
+    //~^ ERROR unexpected lifetime
+    //~| ERROR expected identifier, found keyword `Self`
+    //~| ERROR expected one of `:`, `@`
+    //~| ERROR the `Self` constructor can only be used with
+
+    fn baz(&mur Self @ _) {}
+    //~^ ERROR expected one of `:`, `@`
+}
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-70549-resolve-after-recovered-self-ctor.stderr b/tests/ui/parser/issues/issue-70549-resolve-after-recovered-self-ctor.stderr
new file mode 100644
index 000000000..421f14540
--- /dev/null
+++ b/tests/ui/parser/issues/issue-70549-resolve-after-recovered-self-ctor.stderr
@@ -0,0 +1,56 @@
+error: expected identifier, found keyword `Self`
+  --> $DIR/issue-70549-resolve-after-recovered-self-ctor.rs:4:17
+   |
+LL |     fn foo(&mur Self) {}
+   |                 ^^^^ expected identifier, found keyword
+
+error: expected one of `:`, `@`, or `|`, found keyword `Self`
+  --> $DIR/issue-70549-resolve-after-recovered-self-ctor.rs:4:17
+   |
+LL |     fn foo(&mur Self) {}
+   |            -----^^^^
+   |            |    |
+   |            |    expected one of `:`, `@`, or `|`
+   |            help: declare the type after the parameter binding: `<identifier>: <type>`
+
+error: unexpected lifetime `'static` in pattern
+  --> $DIR/issue-70549-resolve-after-recovered-self-ctor.rs:8:13
+   |
+LL |     fn bar(&'static mur Self) {}
+   |             ^^^^^^^ help: remove the lifetime
+
+error: expected identifier, found keyword `Self`
+  --> $DIR/issue-70549-resolve-after-recovered-self-ctor.rs:8:25
+   |
+LL |     fn bar(&'static mur Self) {}
+   |                         ^^^^ expected identifier, found keyword
+
+error: expected one of `:`, `@`, or `|`, found keyword `Self`
+  --> $DIR/issue-70549-resolve-after-recovered-self-ctor.rs:8:25
+   |
+LL |     fn bar(&'static mur Self) {}
+   |            -------------^^^^
+   |            |            |
+   |            |            expected one of `:`, `@`, or `|`
+   |            help: declare the type after the parameter binding: `<identifier>: <type>`
+
+error: expected one of `:`, `@`, or `|`, found keyword `Self`
+  --> $DIR/issue-70549-resolve-after-recovered-self-ctor.rs:14:17
+   |
+LL |     fn baz(&mur Self @ _) {}
+   |                 ^^^^ expected one of `:`, `@`, or `|`
+
+error: the `Self` constructor can only be used with tuple or unit structs
+  --> $DIR/issue-70549-resolve-after-recovered-self-ctor.rs:4:17
+   |
+LL |     fn foo(&mur Self) {}
+   |                 ^^^^ help: use curly brackets: `Self { /* fields */ }`
+
+error: the `Self` constructor can only be used with tuple or unit structs
+  --> $DIR/issue-70549-resolve-after-recovered-self-ctor.rs:8:25
+   |
+LL |     fn bar(&'static mur Self) {}
+   |                         ^^^^ help: use curly brackets: `Self { /* fields */ }`
+
+error: aborting due to 8 previous errors
+
diff --git a/tests/ui/parser/issues/issue-70552-ascription-in-parens-after-call.rs b/tests/ui/parser/issues/issue-70552-ascription-in-parens-after-call.rs
new file mode 100644
index 000000000..9b6dd7db4
--- /dev/null
+++ b/tests/ui/parser/issues/issue-70552-ascription-in-parens-after-call.rs
@@ -0,0 +1,3 @@
+fn main() {
+    expr as fun()(:); //~ ERROR expected expression
+}
diff --git a/tests/ui/parser/issues/issue-70552-ascription-in-parens-after-call.stderr b/tests/ui/parser/issues/issue-70552-ascription-in-parens-after-call.stderr
new file mode 100644
index 000000000..f03c92e1b
--- /dev/null
+++ b/tests/ui/parser/issues/issue-70552-ascription-in-parens-after-call.stderr
@@ -0,0 +1,8 @@
+error: expected expression, found `:`
+  --> $DIR/issue-70552-ascription-in-parens-after-call.rs:2:19
+   |
+LL |     expr as fun()(:);
+   |                   ^ expected expression
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-70583-block-is-empty-1.rs b/tests/ui/parser/issues/issue-70583-block-is-empty-1.rs
new file mode 100644
index 000000000..f560f68f6
--- /dev/null
+++ b/tests/ui/parser/issues/issue-70583-block-is-empty-1.rs
@@ -0,0 +1,20 @@
+pub enum ErrorHandled {
+    Reported,
+    TooGeneric,
+}
+
+impl ErrorHandled {
+    pub fn assert_reported(self) {
+        match self {
+            ErrorHandled::Reported => {}
+            ErrorHandled::TooGeneric => panic!(),
+        }
+    }
+}
+
+fn struct_generic(x: Vec<i32>) {
+    for v in x {
+        println!("{}", v);
+    }
+    }
+} //~ ERROR unexpected closing delimiter: `}`
diff --git a/tests/ui/parser/issues/issue-70583-block-is-empty-1.stderr b/tests/ui/parser/issues/issue-70583-block-is-empty-1.stderr
new file mode 100644
index 000000000..39bf113ef
--- /dev/null
+++ b/tests/ui/parser/issues/issue-70583-block-is-empty-1.stderr
@@ -0,0 +1,13 @@
+error: unexpected closing delimiter: `}`
+  --> $DIR/issue-70583-block-is-empty-1.rs:20:1
+   |
+LL | fn struct_generic(x: Vec<i32>) {
+   |                                - this opening brace...
+...
+LL |     }
+   |     - ...matches this closing brace
+LL | }
+   | ^ unexpected closing delimiter
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-70583-block-is-empty-2.rs b/tests/ui/parser/issues/issue-70583-block-is-empty-2.rs
new file mode 100644
index 000000000..80f53338a
--- /dev/null
+++ b/tests/ui/parser/issues/issue-70583-block-is-empty-2.rs
@@ -0,0 +1,14 @@
+pub enum ErrorHandled {
+    Reported,
+    TooGeneric,
+}
+
+impl ErrorHandled {
+    pub fn assert_reported(self) {
+        match self {
+            ErrorHandled::Reported => {}}
+                                     //^~ ERROR block is empty, you might have not meant to close it
+            ErrorHandled::TooGeneric => panic!(),
+        }
+    }
+} //~ ERROR unexpected closing delimiter: `}`
diff --git a/tests/ui/parser/issues/issue-70583-block-is-empty-2.stderr b/tests/ui/parser/issues/issue-70583-block-is-empty-2.stderr
new file mode 100644
index 000000000..5d37b2164
--- /dev/null
+++ b/tests/ui/parser/issues/issue-70583-block-is-empty-2.stderr
@@ -0,0 +1,11 @@
+error: unexpected closing delimiter: `}`
+  --> $DIR/issue-70583-block-is-empty-2.rs:14:1
+   |
+LL |             ErrorHandled::Reported => {}}
+   |                                       -- block is empty, you might have not meant to close it
+...
+LL | }
+   | ^ unexpected closing delimiter
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-7222.rs b/tests/ui/parser/issues/issue-7222.rs
new file mode 100644
index 000000000..649073166
--- /dev/null
+++ b/tests/ui/parser/issues/issue-7222.rs
@@ -0,0 +1,12 @@
+// run-pass
+// pretty-expanded FIXME #23616
+#![allow(illegal_floating_point_literal_pattern)] // FIXME #41620
+
+pub fn main() {
+    const FOO: f64 = 10.0;
+
+    match 0.0 {
+        0.0 ..= FOO => (),
+        _ => ()
+    }
+}
diff --git a/tests/ui/parser/issues/issue-72253.rs b/tests/ui/parser/issues/issue-72253.rs
new file mode 100644
index 000000000..1446a796f
--- /dev/null
+++ b/tests/ui/parser/issues/issue-72253.rs
@@ -0,0 +1,6 @@
+fn main() {
+    let a = std::process::Command::new("echo")
+        .arg("1")
+        ,arg("2") //~ ERROR expected one of `.`, `;`, `?`, `else`, or an operator, found `,`
+        .output();
+}
diff --git a/tests/ui/parser/issues/issue-72253.stderr b/tests/ui/parser/issues/issue-72253.stderr
new file mode 100644
index 000000000..477fa09f4
--- /dev/null
+++ b/tests/ui/parser/issues/issue-72253.stderr
@@ -0,0 +1,10 @@
+error: expected one of `.`, `;`, `?`, `else`, or an operator, found `,`
+  --> $DIR/issue-72253.rs:4:9
+   |
+LL |         .arg("1")
+   |                  - expected one of `.`, `;`, `?`, `else`, or an operator
+LL |         ,arg("2")
+   |         ^ unexpected token
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-72373.rs b/tests/ui/parser/issues/issue-72373.rs
new file mode 100644
index 000000000..4da6061c2
--- /dev/null
+++ b/tests/ui/parser/issues/issue-72373.rs
@@ -0,0 +1,9 @@
+fn foo(c: &[u32], n: u32) -> u32 {
+    match *c {
+        [h, ..] if h > n => 0,
+        [h, ..] if h == n => 1,
+        [h, ref ts..] => foo(c, n - h) + foo(ts, n),
+        //~^ ERROR expected one of `,`, `@`, `]`, or `|`, found `..`
+        [] => 0,
+    }
+}
diff --git a/tests/ui/parser/issues/issue-72373.stderr b/tests/ui/parser/issues/issue-72373.stderr
new file mode 100644
index 000000000..0bb99a01e
--- /dev/null
+++ b/tests/ui/parser/issues/issue-72373.stderr
@@ -0,0 +1,13 @@
+error: expected one of `,`, `@`, `]`, or `|`, found `..`
+  --> $DIR/issue-72373.rs:5:19
+   |
+LL |         [h, ref ts..] => foo(c, n - h) + foo(ts, n),
+   |                   ^^ expected one of `,`, `@`, `]`, or `|`
+   |
+help: if you meant to bind the contents of the rest of the array pattern into `ts`, use `@`
+   |
+LL |         [h, ref ts @ ..] => foo(c, n - h) + foo(ts, n),
+   |                    +
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-73568-lifetime-after-mut.rs b/tests/ui/parser/issues/issue-73568-lifetime-after-mut.rs
new file mode 100644
index 000000000..5f731f8db
--- /dev/null
+++ b/tests/ui/parser/issues/issue-73568-lifetime-after-mut.rs
@@ -0,0 +1,19 @@
+#![crate_type="lib"]
+fn x<'a>(x: &mut 'a i32){} //~ ERROR lifetime must precede `mut`
+
+macro_rules! mac {
+    ($lt:lifetime) => {
+        fn w<$lt>(w: &mut $lt i32) {}
+        //~^ ERROR lifetime must precede `mut`
+    }
+}
+
+mac!('a);
+
+// avoid false positives
+fn y<'a>(y: &mut 'a + Send) {
+    //~^ ERROR expected a path on the left-hand side of `+`, not `&mut 'a`
+    //~| ERROR at least one trait is required for an object type
+    let z = y as &mut 'a + Send;
+    //~^ ERROR expected value, found trait `Send`
+}
diff --git a/tests/ui/parser/issues/issue-73568-lifetime-after-mut.stderr b/tests/ui/parser/issues/issue-73568-lifetime-after-mut.stderr
new file mode 100644
index 000000000..799bc16bd
--- /dev/null
+++ b/tests/ui/parser/issues/issue-73568-lifetime-after-mut.stderr
@@ -0,0 +1,39 @@
+error: lifetime must precede `mut`
+  --> $DIR/issue-73568-lifetime-after-mut.rs:2:13
+   |
+LL | fn x<'a>(x: &mut 'a i32){}
+   |             ^^^^^^^ help: place the lifetime before `mut`: `&'a mut`
+
+error[E0178]: expected a path on the left-hand side of `+`, not `&mut 'a`
+  --> $DIR/issue-73568-lifetime-after-mut.rs:14:13
+   |
+LL | fn y<'a>(y: &mut 'a + Send) {
+   |             ^^^^^^^^^^^^^^ help: try adding parentheses: `&mut ('a + Send)`
+
+error: lifetime must precede `mut`
+  --> $DIR/issue-73568-lifetime-after-mut.rs:6:22
+   |
+LL |         fn w<$lt>(w: &mut $lt i32) {}
+   |                      ^^^^^^^^ help: place the lifetime before `mut`: `&$lt mut`
+...
+LL | mac!('a);
+   | -------- in this macro invocation
+   |
+   = note: this error originates in the macro `mac` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error[E0423]: expected value, found trait `Send`
+  --> $DIR/issue-73568-lifetime-after-mut.rs:17:28
+   |
+LL |     let z = y as &mut 'a + Send;
+   |                            ^^^^ not a value
+
+error[E0224]: at least one trait is required for an object type
+  --> $DIR/issue-73568-lifetime-after-mut.rs:14:18
+   |
+LL | fn y<'a>(y: &mut 'a + Send) {
+   |                  ^^
+
+error: aborting due to 5 previous errors
+
+Some errors have detailed explanations: E0178, E0224, E0423.
+For more information about an error, try `rustc --explain E0178`.
diff --git a/tests/ui/parser/issues/issue-75599.rs b/tests/ui/parser/issues/issue-75599.rs
new file mode 100644
index 000000000..0857676e4
--- /dev/null
+++ b/tests/ui/parser/issues/issue-75599.rs
@@ -0,0 +1,24 @@
+// check-pass
+#![allow(non_upper_case_globals)]
+
+const or: usize = 1;
+const and: usize = 2;
+
+mod or {
+    pub const X: usize = 3;
+}
+
+mod and {
+    pub const X: usize = 4;
+}
+
+fn main() {
+    match 0 {
+        0 => {}
+        or => {}
+        and => {}
+        or::X => {}
+        and::X => {}
+        _ => {}
+    }
+}
diff --git a/tests/ui/parser/issues/issue-76437-async.rs b/tests/ui/parser/issues/issue-76437-async.rs
new file mode 100644
index 000000000..84ee3dd21
--- /dev/null
+++ b/tests/ui/parser/issues/issue-76437-async.rs
@@ -0,0 +1,7 @@
+// edition:2018
+
+mod t {
+    async pub fn t() {}
+    //~^ ERROR expected one of `extern`, `fn`, or `unsafe`, found keyword `pub`
+    //~| HELP visibility `pub` must come before `async`
+}
diff --git a/tests/ui/parser/issues/issue-76437-async.stderr b/tests/ui/parser/issues/issue-76437-async.stderr
new file mode 100644
index 000000000..2c9c2a8cf
--- /dev/null
+++ b/tests/ui/parser/issues/issue-76437-async.stderr
@@ -0,0 +1,11 @@
+error: expected one of `extern`, `fn`, or `unsafe`, found keyword `pub`
+  --> $DIR/issue-76437-async.rs:4:11
+   |
+LL |     async pub fn t() {}
+   |     ------^^^
+   |     |     |
+   |     |     expected one of `extern`, `fn`, or `unsafe`
+   |     help: visibility `pub` must come before `async`: `pub async`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-76437-const-async-unsafe.rs b/tests/ui/parser/issues/issue-76437-const-async-unsafe.rs
new file mode 100644
index 000000000..f1e06e4ad
--- /dev/null
+++ b/tests/ui/parser/issues/issue-76437-const-async-unsafe.rs
@@ -0,0 +1,7 @@
+// edition:2018
+
+mod t {
+    const async unsafe pub fn t() {}
+    //~^ ERROR expected one of `extern` or `fn`, found keyword `pub`
+    //~| HELP visibility `pub` must come before `const async unsafe`
+}
diff --git a/tests/ui/parser/issues/issue-76437-const-async-unsafe.stderr b/tests/ui/parser/issues/issue-76437-const-async-unsafe.stderr
new file mode 100644
index 000000000..2e91beda1
--- /dev/null
+++ b/tests/ui/parser/issues/issue-76437-const-async-unsafe.stderr
@@ -0,0 +1,11 @@
+error: expected one of `extern` or `fn`, found keyword `pub`
+  --> $DIR/issue-76437-const-async-unsafe.rs:4:24
+   |
+LL |     const async unsafe pub fn t() {}
+   |     -------------------^^^
+   |     |                  |
+   |     |                  expected one of `extern` or `fn`
+   |     help: visibility `pub` must come before `const async unsafe`: `pub const async unsafe`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-76437-const-async.rs b/tests/ui/parser/issues/issue-76437-const-async.rs
new file mode 100644
index 000000000..3c789fdcd
--- /dev/null
+++ b/tests/ui/parser/issues/issue-76437-const-async.rs
@@ -0,0 +1,7 @@
+// edition:2018
+
+mod t {
+    const async pub fn t() {}
+    //~^ ERROR expected one of `extern`, `fn`, or `unsafe`, found keyword `pub`
+    //~| HELP visibility `pub` must come before `const async`
+}
diff --git a/tests/ui/parser/issues/issue-76437-const-async.stderr b/tests/ui/parser/issues/issue-76437-const-async.stderr
new file mode 100644
index 000000000..21b96c14d
--- /dev/null
+++ b/tests/ui/parser/issues/issue-76437-const-async.stderr
@@ -0,0 +1,11 @@
+error: expected one of `extern`, `fn`, or `unsafe`, found keyword `pub`
+  --> $DIR/issue-76437-const-async.rs:4:17
+   |
+LL |     const async pub fn t() {}
+   |     ------------^^^
+   |     |           |
+   |     |           expected one of `extern`, `fn`, or `unsafe`
+   |     help: visibility `pub` must come before `const async`: `pub const async`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-76437-const.rs b/tests/ui/parser/issues/issue-76437-const.rs
new file mode 100644
index 000000000..d3815a523
--- /dev/null
+++ b/tests/ui/parser/issues/issue-76437-const.rs
@@ -0,0 +1,7 @@
+// edition:2018
+
+mod t {
+    const pub fn t() {}
+    //~^ ERROR expected one of `async`, `extern`, `fn`, or `unsafe`, found keyword `pub`
+    //~| HELP visibility `pub` must come before `const`
+}
diff --git a/tests/ui/parser/issues/issue-76437-const.stderr b/tests/ui/parser/issues/issue-76437-const.stderr
new file mode 100644
index 000000000..cf80d9a90
--- /dev/null
+++ b/tests/ui/parser/issues/issue-76437-const.stderr
@@ -0,0 +1,11 @@
+error: expected one of `async`, `extern`, `fn`, or `unsafe`, found keyword `pub`
+  --> $DIR/issue-76437-const.rs:4:11
+   |
+LL |     const pub fn t() {}
+   |     ------^^^
+   |     |     |
+   |     |     expected one of `async`, `extern`, `fn`, or `unsafe`
+   |     help: visibility `pub` must come before `const`: `pub const`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-76437-pub-crate-unsafe.rs b/tests/ui/parser/issues/issue-76437-pub-crate-unsafe.rs
new file mode 100644
index 000000000..daa1d1207
--- /dev/null
+++ b/tests/ui/parser/issues/issue-76437-pub-crate-unsafe.rs
@@ -0,0 +1,7 @@
+// edition:2018
+
+mod t {
+    unsafe pub(crate) fn t() {}
+    //~^ ERROR expected one of `extern` or `fn`, found keyword `pub`
+    //~| HELP visibility `pub(crate)` must come before `unsafe`
+}
diff --git a/tests/ui/parser/issues/issue-76437-pub-crate-unsafe.stderr b/tests/ui/parser/issues/issue-76437-pub-crate-unsafe.stderr
new file mode 100644
index 000000000..fa8f13721
--- /dev/null
+++ b/tests/ui/parser/issues/issue-76437-pub-crate-unsafe.stderr
@@ -0,0 +1,11 @@
+error: expected one of `extern` or `fn`, found keyword `pub`
+  --> $DIR/issue-76437-pub-crate-unsafe.rs:4:12
+   |
+LL |     unsafe pub(crate) fn t() {}
+   |     -------^^^-------
+   |     |      |
+   |     |      expected one of `extern` or `fn`
+   |     help: visibility `pub(crate)` must come before `unsafe`: `pub(crate) unsafe`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-76437-unsafe.rs b/tests/ui/parser/issues/issue-76437-unsafe.rs
new file mode 100644
index 000000000..785a79a79
--- /dev/null
+++ b/tests/ui/parser/issues/issue-76437-unsafe.rs
@@ -0,0 +1,7 @@
+// edition:2018
+
+mod t {
+    unsafe pub fn t() {}
+    //~^ ERROR expected one of `extern` or `fn`, found keyword `pub`
+    //~| HELP visibility `pub` must come before `unsafe`
+}
diff --git a/tests/ui/parser/issues/issue-76437-unsafe.stderr b/tests/ui/parser/issues/issue-76437-unsafe.stderr
new file mode 100644
index 000000000..c63292ef8
--- /dev/null
+++ b/tests/ui/parser/issues/issue-76437-unsafe.stderr
@@ -0,0 +1,11 @@
+error: expected one of `extern` or `fn`, found keyword `pub`
+  --> $DIR/issue-76437-unsafe.rs:4:12
+   |
+LL |     unsafe pub fn t() {}
+   |     -------^^^
+   |     |      |
+   |     |      expected one of `extern` or `fn`
+   |     help: visibility `pub` must come before `unsafe`: `pub unsafe`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-76597.fixed b/tests/ui/parser/issues/issue-76597.fixed
new file mode 100644
index 000000000..2d7a30b83
--- /dev/null
+++ b/tests/ui/parser/issues/issue-76597.fixed
@@ -0,0 +1,11 @@
+// run-rustfix
+
+#![allow(dead_code)]
+#![allow(unused_variables)]
+fn f(
+                                     x: u8,
+                                     y: u8,
+) {}
+//~^^ ERROR: expected one of `!`, `(`, `)`, `+`, `,`, `::`, or `<`, found `y`
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-76597.rs b/tests/ui/parser/issues/issue-76597.rs
new file mode 100644
index 000000000..521b9c64b
--- /dev/null
+++ b/tests/ui/parser/issues/issue-76597.rs
@@ -0,0 +1,11 @@
+// run-rustfix
+
+#![allow(dead_code)]
+#![allow(unused_variables)]
+fn f(
+                                     x: u8
+                                     y: u8,
+) {}
+//~^^ ERROR: expected one of `!`, `(`, `)`, `+`, `,`, `::`, or `<`, found `y`
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-76597.stderr b/tests/ui/parser/issues/issue-76597.stderr
new file mode 100644
index 000000000..50b23329f
--- /dev/null
+++ b/tests/ui/parser/issues/issue-76597.stderr
@@ -0,0 +1,13 @@
+error: expected one of `!`, `(`, `)`, `+`, `,`, `::`, or `<`, found `y`
+  --> $DIR/issue-76597.rs:7:38
+   |
+LL | ...                   x: u8
+   |                            -
+   |                            |
+   |                            expected one of 7 possible tokens
+   |                            help: missing `,`
+LL | ...                   y: u8,
+   |                       ^ unexpected token
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-7970b.rs b/tests/ui/parser/issues/issue-7970b.rs
new file mode 100644
index 000000000..1c4abce39
--- /dev/null
+++ b/tests/ui/parser/issues/issue-7970b.rs
@@ -0,0 +1,4 @@
+fn main() {}
+
+macro_rules! test {}
+//~^ ERROR unexpected end of macro invocation
diff --git a/tests/ui/parser/issues/issue-7970b.stderr b/tests/ui/parser/issues/issue-7970b.stderr
new file mode 100644
index 000000000..a62226a8a
--- /dev/null
+++ b/tests/ui/parser/issues/issue-7970b.stderr
@@ -0,0 +1,8 @@
+error: unexpected end of macro invocation
+  --> $DIR/issue-7970b.rs:3:1
+   |
+LL | macro_rules! test {}
+   | ^^^^^^^^^^^^^^^^^^^^ missing tokens in macro arguments
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-81806.rs b/tests/ui/parser/issues/issue-81806.rs
new file mode 100644
index 000000000..ca86788df
--- /dev/null
+++ b/tests/ui/parser/issues/issue-81806.rs
@@ -0,0 +1,5 @@
+trait T { const
+impl //~ ERROR: expected identifier, found keyword `impl`
+}
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-81806.stderr b/tests/ui/parser/issues/issue-81806.stderr
new file mode 100644
index 000000000..40873388d
--- /dev/null
+++ b/tests/ui/parser/issues/issue-81806.stderr
@@ -0,0 +1,17 @@
+error: expected identifier, found keyword `impl`
+  --> $DIR/issue-81806.rs:2:1
+   |
+LL | trait T { const
+   |         - while parsing this item list starting here
+LL | impl
+   | ^^^^ expected identifier, found keyword
+LL | }
+   | - the item list ends here
+   |
+help: escape `impl` to use it as an identifier
+   |
+LL | r#impl
+   | ++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-83639.rs b/tests/ui/parser/issues/issue-83639.rs
new file mode 100644
index 000000000..6ddbedfa0
--- /dev/null
+++ b/tests/ui/parser/issues/issue-83639.rs
@@ -0,0 +1,6 @@
+// check-fail
+// ignore-tidy-tab
+
+fn main() {
+    """	" //~ ERROR
+}
diff --git a/tests/ui/parser/issues/issue-83639.stderr b/tests/ui/parser/issues/issue-83639.stderr
new file mode 100644
index 000000000..4c10df191
--- /dev/null
+++ b/tests/ui/parser/issues/issue-83639.stderr
@@ -0,0 +1,8 @@
+error: expected one of `.`, `;`, `?`, `}`, or an operator, found `"    "`
+  --> $DIR/issue-83639.rs:5:7
+   |
+LL |     """    "
+   |       ^^^^^^ expected one of `.`, `;`, `?`, `}`, or an operator
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-84104.rs b/tests/ui/parser/issues/issue-84104.rs
new file mode 100644
index 000000000..998949b94
--- /dev/null
+++ b/tests/ui/parser/issues/issue-84104.rs
@@ -0,0 +1,3 @@
+// error-pattern: this file contains an unclosed delimiter
+// error-pattern: expected one of
+#[i=i::<ښܖ<
diff --git a/tests/ui/parser/issues/issue-84104.stderr b/tests/ui/parser/issues/issue-84104.stderr
new file mode 100644
index 000000000..aff31f2c9
--- /dev/null
+++ b/tests/ui/parser/issues/issue-84104.stderr
@@ -0,0 +1,16 @@
+error: this file contains an unclosed delimiter
+  --> $DIR/issue-84104.rs:3:13
+   |
+LL | #[i=i::<ښܖ<
+   |  -          ^
+   |  |
+   |  unclosed delimiter
+
+error: expected one of `>`, a const expression, lifetime, or type, found `]`
+  --> $DIR/issue-84104.rs:3:13
+   |
+LL | #[i=i::<ښܖ<
+   |             ^ expected one of `>`, a const expression, lifetime, or type
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/issues/issue-84117.rs b/tests/ui/parser/issues/issue-84117.rs
new file mode 100644
index 000000000..c9ebf1335
--- /dev/null
+++ b/tests/ui/parser/issues/issue-84117.rs
@@ -0,0 +1,9 @@
+fn main() {
+    let outer_local:e_outer<&str, { let inner_local:e_inner<&str, }
+    //~^ ERROR expected one of `>`, a const expression
+    //~| ERROR expected one of `>`, a const expression, lifetime, or type, found `}`
+    //~| ERROR expected one of `!`, `.`, `::`, `;`, `?`, `else`, `{`, or an operator, found `,`
+    //~| ERROR expected one of `!`, `.`, `::`, `;`, `?`, `else`, `{`, or an operator, found `,`
+    //~| ERROR expected one of `!`, `.`, `::`, `;`, `?`, `else`, `{`, or an operator, found `,`
+}
+//~^ ERROR expected one of `,` or `>`, found `}`
diff --git a/tests/ui/parser/issues/issue-84117.stderr b/tests/ui/parser/issues/issue-84117.stderr
new file mode 100644
index 000000000..237bc11bd
--- /dev/null
+++ b/tests/ui/parser/issues/issue-84117.stderr
@@ -0,0 +1,72 @@
+error: expected one of `>`, a const expression, lifetime, or type, found `}`
+  --> $DIR/issue-84117.rs:2:67
+   |
+LL |     let outer_local:e_outer<&str, { let inner_local:e_inner<&str, }
+   |                                         -----------               ^ expected one of `>`, a const expression, lifetime, or type
+   |                                         |
+   |                                         while parsing the type for `inner_local`
+   |
+help: you might have meant to end the type parameters here
+   |
+LL |     let outer_local:e_outer<&str, { let inner_local:e_inner<&str>, }
+   |                                                                 +
+help: use `=` if you meant to assign
+   |
+LL |     let outer_local:e_outer<&str, { let inner_local =e_inner<&str, }
+   |                                                     ~
+
+error: expected one of `!`, `.`, `::`, `;`, `?`, `else`, `{`, or an operator, found `,`
+  --> $DIR/issue-84117.rs:2:65
+   |
+LL |     let outer_local:e_outer<&str, { let inner_local:e_inner<&str, }
+   |                                                                 ^ expected one of 8 possible tokens
+
+error: expected one of `,` or `>`, found `}`
+  --> $DIR/issue-84117.rs:8:1
+   |
+LL |     let outer_local:e_outer<&str, { let inner_local:e_inner<&str, }
+   |         ----------- while parsing the type for `outer_local`       - expected one of `,` or `>`
+...
+LL | }
+   | ^ unexpected token
+   |
+help: you might have meant to end the type parameters here
+   |
+LL |     let outer_local:e_outer<&str, { let inner_local:e_inner<&str, }>
+   |                                                                    +
+help: use `=` if you meant to assign
+   |
+LL |     let outer_local =e_outer<&str, { let inner_local:e_inner<&str, }
+   |                     ~
+
+error: expected one of `>`, a const expression, lifetime, or type, found `}`
+  --> $DIR/issue-84117.rs:2:67
+   |
+LL |     let outer_local:e_outer<&str, { let inner_local:e_inner<&str, }
+   |                                         -----------               ^ expected one of `>`, a const expression, lifetime, or type
+   |                                         |
+   |                                         while parsing the type for `inner_local`
+   |
+help: you might have meant to end the type parameters here
+   |
+LL |     let outer_local:e_outer<&str, { let inner_local:e_inner<&str>, }
+   |                                                                 +
+help: use `=` if you meant to assign
+   |
+LL |     let outer_local:e_outer<&str, { let inner_local =e_inner<&str, }
+   |                                                     ~
+
+error: expected one of `!`, `.`, `::`, `;`, `?`, `else`, `{`, or an operator, found `,`
+  --> $DIR/issue-84117.rs:2:65
+   |
+LL |     let outer_local:e_outer<&str, { let inner_local:e_inner<&str, }
+   |                                                                 ^ expected one of 8 possible tokens
+
+error: expected one of `!`, `.`, `::`, `;`, `?`, `else`, `{`, or an operator, found `,`
+  --> $DIR/issue-84117.rs:2:33
+   |
+LL |     let outer_local:e_outer<&str, { let inner_local:e_inner<&str, }
+   |                                 ^ expected one of 8 possible tokens
+
+error: aborting due to 6 previous errors
+
diff --git a/tests/ui/parser/issues/issue-84148-1.rs b/tests/ui/parser/issues/issue-84148-1.rs
new file mode 100644
index 000000000..9fa8086c2
--- /dev/null
+++ b/tests/ui/parser/issues/issue-84148-1.rs
@@ -0,0 +1,3 @@
+fn f(t:for<>t?)
+//~^ ERROR: expected one of
+//~| ERROR: invalid `?` in type
diff --git a/tests/ui/parser/issues/issue-84148-1.stderr b/tests/ui/parser/issues/issue-84148-1.stderr
new file mode 100644
index 000000000..9261067c2
--- /dev/null
+++ b/tests/ui/parser/issues/issue-84148-1.stderr
@@ -0,0 +1,19 @@
+error: invalid `?` in type
+  --> $DIR/issue-84148-1.rs:1:14
+   |
+LL | fn f(t:for<>t?)
+   |              ^ `?` is only allowed on expressions, not types
+   |
+help: if you meant to express that the type might not contain a value, use the `Option` wrapper type
+   |
+LL | fn f(t:Option<for<>t>)
+   |        +++++++      ~
+
+error: expected one of `->`, `where`, or `{`, found `<eof>`
+  --> $DIR/issue-84148-1.rs:1:15
+   |
+LL | fn f(t:for<>t?)
+   |               ^ expected one of `->`, `where`, or `{`
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/issues/issue-84148-2.rs b/tests/ui/parser/issues/issue-84148-2.rs
new file mode 100644
index 000000000..2f6a7facf
--- /dev/null
+++ b/tests/ui/parser/issues/issue-84148-2.rs
@@ -0,0 +1,3 @@
+// error-pattern: this file contains an unclosed delimiter
+// error-pattern: invalid `?` in type
+fn f(t:for<>t?
diff --git a/tests/ui/parser/issues/issue-84148-2.stderr b/tests/ui/parser/issues/issue-84148-2.stderr
new file mode 100644
index 000000000..71d543f9b
--- /dev/null
+++ b/tests/ui/parser/issues/issue-84148-2.stderr
@@ -0,0 +1,27 @@
+error: this file contains an unclosed delimiter
+  --> $DIR/issue-84148-2.rs:3:16
+   |
+LL | fn f(t:for<>t?
+   |     -          ^
+   |     |
+   |     unclosed delimiter
+
+error: invalid `?` in type
+  --> $DIR/issue-84148-2.rs:3:14
+   |
+LL | fn f(t:for<>t?
+   |              ^ `?` is only allowed on expressions, not types
+   |
+help: if you meant to express that the type might not contain a value, use the `Option` wrapper type
+   |
+LL | fn f(t:Option<for<>t>
+   |        +++++++      ~
+
+error: expected one of `->`, `where`, or `{`, found `<eof>`
+  --> $DIR/issue-84148-2.rs:3:16
+   |
+LL | fn f(t:for<>t?
+   |                ^ expected one of `->`, `where`, or `{`
+
+error: aborting due to 3 previous errors
+
diff --git a/tests/ui/parser/issues/issue-8537.rs b/tests/ui/parser/issues/issue-8537.rs
new file mode 100644
index 000000000..9d0cbce6c
--- /dev/null
+++ b/tests/ui/parser/issues/issue-8537.rs
@@ -0,0 +1,5 @@
+pub extern
+  "invalid-ab_isize" //~ ERROR invalid ABI
+fn foo() {}
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-8537.stderr b/tests/ui/parser/issues/issue-8537.stderr
new file mode 100644
index 000000000..523cc9dc5
--- /dev/null
+++ b/tests/ui/parser/issues/issue-8537.stderr
@@ -0,0 +1,11 @@
+error[E0703]: invalid ABI: found `invalid-ab_isize`
+  --> $DIR/issue-8537.rs:2:3
+   |
+LL |   "invalid-ab_isize"
+   |   ^^^^^^^^^^^^^^^^^^ invalid ABI
+   |
+   = note: invoke `rustc --print=calling-conventions` for a full list of supported calling conventions.
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0703`.
diff --git a/tests/ui/parser/issues/issue-86895.rs b/tests/ui/parser/issues/issue-86895.rs
new file mode 100644
index 000000000..4cd098431
--- /dev/null
+++ b/tests/ui/parser/issues/issue-86895.rs
@@ -0,0 +1,3 @@
+const pub () {}
+//~^ ERROR expected one of `async`, `extern`, `fn`, or `unsafe`
+pub fn main() {}
diff --git a/tests/ui/parser/issues/issue-86895.stderr b/tests/ui/parser/issues/issue-86895.stderr
new file mode 100644
index 000000000..575d857c0
--- /dev/null
+++ b/tests/ui/parser/issues/issue-86895.stderr
@@ -0,0 +1,8 @@
+error: expected one of `async`, `extern`, `fn`, or `unsafe`, found keyword `pub`
+  --> $DIR/issue-86895.rs:1:7
+   |
+LL | const pub () {}
+   |       ^^^ expected one of `async`, `extern`, `fn`, or `unsafe`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-87086-colon-path-sep.rs b/tests/ui/parser/issues/issue-87086-colon-path-sep.rs
new file mode 100644
index 000000000..0b7b67496
--- /dev/null
+++ b/tests/ui/parser/issues/issue-87086-colon-path-sep.rs
@@ -0,0 +1,79 @@
+// Tests that a suggestion is issued if the user wrote a colon instead of
+// a path separator in a match arm.
+
+mod qux {
+    pub enum Foo {
+        Bar,
+        Baz,
+    }
+}
+
+use qux::Foo;
+
+fn f() -> Foo { Foo::Bar }
+
+fn g1() {
+    match f() {
+        Foo:Bar => {}
+        //~^ ERROR: expected one of
+        //~| HELP: maybe write a path separator here
+        _ => {}
+    }
+    match f() {
+        qux::Foo:Bar => {}
+        //~^ ERROR: expected one of
+        //~| HELP: maybe write a path separator here
+        _ => {}
+    }
+    match f() {
+        qux:Foo::Baz => {}
+        //~^ ERROR: expected one of
+        //~| HELP: maybe write a path separator here
+        _ => {}
+    }
+    match f() {
+        qux: Foo::Baz if true => {}
+        //~^ ERROR: expected one of
+        //~| HELP: maybe write a path separator here
+        _ => {}
+    }
+    if let Foo:Bar = f() {
+    //~^ ERROR: expected one of
+    //~| HELP: maybe write a path separator here
+    }
+}
+
+fn g1_neg() {
+    match f() {
+        ref qux: Foo::Baz => {}
+        //~^ ERROR: expected one of
+        //~| HELP: maybe write a path separator here
+        _ => {}
+    }
+}
+
+fn g2_neg() {
+    match f() {
+        mut qux: Foo::Baz => {}
+        //~^ ERROR: expected one of
+        //~| HELP: maybe write a path separator here
+        _ => {}
+    }
+}
+
+fn main() {
+    let myfoo = Foo::Bar;
+    match myfoo {
+        Foo::Bar => {}
+        Foo:Bar::Baz => {}
+        //~^ ERROR: expected one of
+        //~| HELP: maybe write a path separator here
+        //~| ERROR: failed to resolve: `Bar` is a variant, not a module
+    }
+    match myfoo {
+        Foo::Bar => {}
+        Foo:Bar => {}
+        //~^ ERROR: expected one of
+        //~| HELP: maybe write a path separator here
+    }
+}
diff --git a/tests/ui/parser/issues/issue-87086-colon-path-sep.stderr b/tests/ui/parser/issues/issue-87086-colon-path-sep.stderr
new file mode 100644
index 000000000..2050a16be
--- /dev/null
+++ b/tests/ui/parser/issues/issue-87086-colon-path-sep.stderr
@@ -0,0 +1,90 @@
+error: expected one of `@` or `|`, found `:`
+  --> $DIR/issue-87086-colon-path-sep.rs:17:12
+   |
+LL |         Foo:Bar => {}
+   |            ^
+   |            |
+   |            expected one of `@` or `|`
+   |            help: maybe write a path separator here: `::`
+
+error: expected one of `!`, `(`, `...`, `..=`, `..`, `::`, `{`, or `|`, found `:`
+  --> $DIR/issue-87086-colon-path-sep.rs:23:17
+   |
+LL |         qux::Foo:Bar => {}
+   |                 ^
+   |                 |
+   |                 expected one of 8 possible tokens
+   |                 help: maybe write a path separator here: `::`
+
+error: expected one of `@` or `|`, found `:`
+  --> $DIR/issue-87086-colon-path-sep.rs:29:12
+   |
+LL |         qux:Foo::Baz => {}
+   |            ^
+   |            |
+   |            expected one of `@` or `|`
+   |            help: maybe write a path separator here: `::`
+
+error: expected one of `@` or `|`, found `:`
+  --> $DIR/issue-87086-colon-path-sep.rs:35:12
+   |
+LL |         qux: Foo::Baz if true => {}
+   |            ^
+   |            |
+   |            expected one of `@` or `|`
+   |            help: maybe write a path separator here: `::`
+
+error: expected one of `@` or `|`, found `:`
+  --> $DIR/issue-87086-colon-path-sep.rs:40:15
+   |
+LL |     if let Foo:Bar = f() {
+   |               ^
+   |               |
+   |               expected one of `@` or `|`
+   |               help: maybe write a path separator here: `::`
+
+error: expected one of `@` or `|`, found `:`
+  --> $DIR/issue-87086-colon-path-sep.rs:48:16
+   |
+LL |         ref qux: Foo::Baz => {}
+   |                ^
+   |                |
+   |                expected one of `@` or `|`
+   |                help: maybe write a path separator here: `::`
+
+error: expected one of `@` or `|`, found `:`
+  --> $DIR/issue-87086-colon-path-sep.rs:57:16
+   |
+LL |         mut qux: Foo::Baz => {}
+   |                ^
+   |                |
+   |                expected one of `@` or `|`
+   |                help: maybe write a path separator here: `::`
+
+error: expected one of `@` or `|`, found `:`
+  --> $DIR/issue-87086-colon-path-sep.rs:68:12
+   |
+LL |         Foo:Bar::Baz => {}
+   |            ^
+   |            |
+   |            expected one of `@` or `|`
+   |            help: maybe write a path separator here: `::`
+
+error: expected one of `@` or `|`, found `:`
+  --> $DIR/issue-87086-colon-path-sep.rs:75:12
+   |
+LL |         Foo:Bar => {}
+   |            ^
+   |            |
+   |            expected one of `@` or `|`
+   |            help: maybe write a path separator here: `::`
+
+error[E0433]: failed to resolve: `Bar` is a variant, not a module
+  --> $DIR/issue-87086-colon-path-sep.rs:68:13
+   |
+LL |         Foo:Bar::Baz => {}
+   |             ^^^ `Bar` is a variant, not a module
+
+error: aborting due to 10 previous errors
+
+For more information about this error, try `rustc --explain E0433`.
diff --git a/tests/ui/parser/issues/issue-87197-missing-semicolon.fixed b/tests/ui/parser/issues/issue-87197-missing-semicolon.fixed
new file mode 100644
index 000000000..53f071db7
--- /dev/null
+++ b/tests/ui/parser/issues/issue-87197-missing-semicolon.fixed
@@ -0,0 +1,10 @@
+// run-rustfix
+// Parser should know when a semicolon is missing.
+// https://github.com/rust-lang/rust/issues/87197
+
+fn main() {
+    let x = 100; //~ ERROR: expected `;`
+    println!("{}", x); //~ ERROR: expected `;`
+    let y = 200; //~ ERROR: expected `;`
+    println!("{}", y);
+}
diff --git a/tests/ui/parser/issues/issue-87197-missing-semicolon.rs b/tests/ui/parser/issues/issue-87197-missing-semicolon.rs
new file mode 100644
index 000000000..db0edf452
--- /dev/null
+++ b/tests/ui/parser/issues/issue-87197-missing-semicolon.rs
@@ -0,0 +1,10 @@
+// run-rustfix
+// Parser should know when a semicolon is missing.
+// https://github.com/rust-lang/rust/issues/87197
+
+fn main() {
+    let x = 100 //~ ERROR: expected `;`
+    println!("{}", x) //~ ERROR: expected `;`
+    let y = 200 //~ ERROR: expected `;`
+    println!("{}", y);
+}
diff --git a/tests/ui/parser/issues/issue-87197-missing-semicolon.stderr b/tests/ui/parser/issues/issue-87197-missing-semicolon.stderr
new file mode 100644
index 000000000..57772de1e
--- /dev/null
+++ b/tests/ui/parser/issues/issue-87197-missing-semicolon.stderr
@@ -0,0 +1,26 @@
+error: expected `;`, found `println`
+  --> $DIR/issue-87197-missing-semicolon.rs:6:16
+   |
+LL |     let x = 100
+   |                ^ help: add `;` here
+LL |     println!("{}", x)
+   |     ------- unexpected token
+
+error: expected `;`, found keyword `let`
+  --> $DIR/issue-87197-missing-semicolon.rs:7:22
+   |
+LL |     println!("{}", x)
+   |                      ^ help: add `;` here
+LL |     let y = 200
+   |     --- unexpected token
+
+error: expected `;`, found `println`
+  --> $DIR/issue-87197-missing-semicolon.rs:8:16
+   |
+LL |     let y = 200
+   |                ^ help: add `;` here
+LL |     println!("{}", y);
+   |     ------- unexpected token
+
+error: aborting due to 3 previous errors
+
diff --git a/tests/ui/parser/issues/issue-87217-keyword-order/const-async-const.rs b/tests/ui/parser/issues/issue-87217-keyword-order/const-async-const.rs
new file mode 100644
index 000000000..df0cd5439
--- /dev/null
+++ b/tests/ui/parser/issues/issue-87217-keyword-order/const-async-const.rs
@@ -0,0 +1,9 @@
+// edition:2018
+
+// Test that even when `const` is already present, the proposed fix is to remove the second `const`
+
+const async const fn test() {}
+//~^ ERROR expected one of `extern`, `fn`, or `unsafe`, found keyword `const`
+//~| NOTE expected one of `extern`, `fn`, or `unsafe`
+//~| HELP `const` already used earlier, remove this one
+//~| NOTE `const` first seen here
diff --git a/tests/ui/parser/issues/issue-87217-keyword-order/const-async-const.stderr b/tests/ui/parser/issues/issue-87217-keyword-order/const-async-const.stderr
new file mode 100644
index 000000000..977c6ebfe
--- /dev/null
+++ b/tests/ui/parser/issues/issue-87217-keyword-order/const-async-const.stderr
@@ -0,0 +1,17 @@
+error: expected one of `extern`, `fn`, or `unsafe`, found keyword `const`
+  --> $DIR/const-async-const.rs:5:13
+   |
+LL | const async const fn test() {}
+   |             ^^^^^
+   |             |
+   |             expected one of `extern`, `fn`, or `unsafe`
+   |             help: `const` already used earlier, remove this one
+   |
+note: `const` first seen here
+  --> $DIR/const-async-const.rs:5:1
+   |
+LL | const async const fn test() {}
+   | ^^^^^
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-87217-keyword-order/several-kw-jump.rs b/tests/ui/parser/issues/issue-87217-keyword-order/several-kw-jump.rs
new file mode 100644
index 000000000..bbebc99e9
--- /dev/null
+++ b/tests/ui/parser/issues/issue-87217-keyword-order/several-kw-jump.rs
@@ -0,0 +1,14 @@
+// edition:2018
+
+// There is an order to respect for keywords before a function:
+// `<visibility>, const, async, unsafe, extern, "<ABI>"`
+//
+// This test ensures the compiler is helpful about them being misplaced.
+// Visibilities are tested elsewhere.
+
+async unsafe const fn test() {}
+//~^ ERROR expected one of `extern` or `fn`, found keyword `const`
+//~| NOTE expected one of `extern` or `fn`
+//~| HELP `const` must come before `async unsafe`
+//~| SUGGESTION const async unsafe
+//~| NOTE keyword order for functions declaration is `pub`, `default`, `const`, `async`, `unsafe`, `extern`
diff --git a/tests/ui/parser/issues/issue-87217-keyword-order/several-kw-jump.stderr b/tests/ui/parser/issues/issue-87217-keyword-order/several-kw-jump.stderr
new file mode 100644
index 000000000..f455caba1
--- /dev/null
+++ b/tests/ui/parser/issues/issue-87217-keyword-order/several-kw-jump.stderr
@@ -0,0 +1,13 @@
+error: expected one of `extern` or `fn`, found keyword `const`
+  --> $DIR/several-kw-jump.rs:9:14
+   |
+LL | async unsafe const fn test() {}
+   | -------------^^^^^
+   | |            |
+   | |            expected one of `extern` or `fn`
+   | help: `const` must come before `async unsafe`: `const async unsafe`
+   |
+   = note: keyword order for functions declaration is `pub`, `default`, `const`, `async`, `unsafe`, `extern`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-87217-keyword-order/wrong-async.rs b/tests/ui/parser/issues/issue-87217-keyword-order/wrong-async.rs
new file mode 100644
index 000000000..4ff4cf5c8
--- /dev/null
+++ b/tests/ui/parser/issues/issue-87217-keyword-order/wrong-async.rs
@@ -0,0 +1,14 @@
+// edition:2018
+
+// There is an order to respect for keywords before a function:
+// `<visibility>, const, async, unsafe, extern, "<ABI>"`
+//
+// This test ensures the compiler is helpful about them being misplaced.
+// Visibilities are tested elsewhere.
+
+unsafe async fn test() {}
+//~^ ERROR expected one of `extern` or `fn`, found keyword `async`
+//~| NOTE expected one of `extern` or `fn`
+//~| HELP `async` must come before `unsafe`
+//~| SUGGESTION async unsafe
+//~| NOTE keyword order for functions declaration is `pub`, `default`, `const`, `async`, `unsafe`, `extern`
diff --git a/tests/ui/parser/issues/issue-87217-keyword-order/wrong-async.stderr b/tests/ui/parser/issues/issue-87217-keyword-order/wrong-async.stderr
new file mode 100644
index 000000000..e9eb14bf0
--- /dev/null
+++ b/tests/ui/parser/issues/issue-87217-keyword-order/wrong-async.stderr
@@ -0,0 +1,13 @@
+error: expected one of `extern` or `fn`, found keyword `async`
+  --> $DIR/wrong-async.rs:9:8
+   |
+LL | unsafe async fn test() {}
+   | -------^^^^^
+   | |      |
+   | |      expected one of `extern` or `fn`
+   | help: `async` must come before `unsafe`: `async unsafe`
+   |
+   = note: keyword order for functions declaration is `pub`, `default`, `const`, `async`, `unsafe`, `extern`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-87217-keyword-order/wrong-const.rs b/tests/ui/parser/issues/issue-87217-keyword-order/wrong-const.rs
new file mode 100644
index 000000000..2f5fbc513
--- /dev/null
+++ b/tests/ui/parser/issues/issue-87217-keyword-order/wrong-const.rs
@@ -0,0 +1,14 @@
+// edition:2018
+
+// There is an order to respect for keywords before a function:
+// `<visibility>, const, async, unsafe, extern, "<ABI>"`
+//
+// This test ensures the compiler is helpful about them being misplaced.
+// Visibilities are tested elsewhere.
+
+unsafe const fn test() {}
+//~^ ERROR expected one of `extern` or `fn`, found keyword `const`
+//~| NOTE expected one of `extern` or `fn`
+//~| HELP `const` must come before `unsafe`
+//~| SUGGESTION const unsafe
+//~| NOTE keyword order for functions declaration is `pub`, `default`, `const`, `async`, `unsafe`, `extern`
diff --git a/tests/ui/parser/issues/issue-87217-keyword-order/wrong-const.stderr b/tests/ui/parser/issues/issue-87217-keyword-order/wrong-const.stderr
new file mode 100644
index 000000000..0d2bc3472
--- /dev/null
+++ b/tests/ui/parser/issues/issue-87217-keyword-order/wrong-const.stderr
@@ -0,0 +1,13 @@
+error: expected one of `extern` or `fn`, found keyword `const`
+  --> $DIR/wrong-const.rs:9:8
+   |
+LL | unsafe const fn test() {}
+   | -------^^^^^
+   | |      |
+   | |      expected one of `extern` or `fn`
+   | help: `const` must come before `unsafe`: `const unsafe`
+   |
+   = note: keyword order for functions declaration is `pub`, `default`, `const`, `async`, `unsafe`, `extern`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-87217-keyword-order/wrong-unsafe.rs b/tests/ui/parser/issues/issue-87217-keyword-order/wrong-unsafe.rs
new file mode 100644
index 000000000..df2412e3e
--- /dev/null
+++ b/tests/ui/parser/issues/issue-87217-keyword-order/wrong-unsafe.rs
@@ -0,0 +1,14 @@
+// edition:2018
+
+// There is an order to respect for keywords before a function:
+// `<visibility>, const, async, unsafe, extern, "<ABI>"`
+//
+// This test ensures the compiler is helpful about them being misplaced.
+// Visibilities are tested elsewhere.
+
+extern unsafe fn test() {}
+//~^ ERROR expected `fn`, found keyword `unsafe`
+//~| NOTE expected `fn`
+//~| HELP `unsafe` must come before `extern`
+//~| SUGGESTION unsafe extern
+//~| NOTE keyword order for functions declaration is `pub`, `default`, `const`, `async`, `unsafe`, `extern`
diff --git a/tests/ui/parser/issues/issue-87217-keyword-order/wrong-unsafe.stderr b/tests/ui/parser/issues/issue-87217-keyword-order/wrong-unsafe.stderr
new file mode 100644
index 000000000..4224713cc
--- /dev/null
+++ b/tests/ui/parser/issues/issue-87217-keyword-order/wrong-unsafe.stderr
@@ -0,0 +1,13 @@
+error: expected `fn`, found keyword `unsafe`
+  --> $DIR/wrong-unsafe.rs:9:8
+   |
+LL | extern unsafe fn test() {}
+   | -------^^^^^^
+   | |      |
+   | |      expected `fn`
+   | help: `unsafe` must come before `extern`: `unsafe extern`
+   |
+   = note: keyword order for functions declaration is `pub`, `default`, `const`, `async`, `unsafe`, `extern`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-87635.rs b/tests/ui/parser/issues/issue-87635.rs
new file mode 100644
index 000000000..f70a87fb0
--- /dev/null
+++ b/tests/ui/parser/issues/issue-87635.rs
@@ -0,0 +1,9 @@
+struct Foo {}
+
+impl Foo {
+    pub fn bar()
+    //~^ ERROR: associated function in `impl` without body
+}
+//~^ERROR expected one of `->`, `where`, or `{`, found `}`
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-87635.stderr b/tests/ui/parser/issues/issue-87635.stderr
new file mode 100644
index 000000000..1d459f1b9
--- /dev/null
+++ b/tests/ui/parser/issues/issue-87635.stderr
@@ -0,0 +1,19 @@
+error: expected one of `->`, `where`, or `{`, found `}`
+  --> $DIR/issue-87635.rs:6:1
+   |
+LL |     pub fn bar()
+   |            ---  - expected one of `->`, `where`, or `{`
+   |            |
+   |            while parsing this `fn`
+LL |
+LL | }
+   | ^ unexpected token
+
+error: associated function in `impl` without body
+  --> $DIR/issue-87635.rs:4:5
+   |
+LL |     pub fn bar()
+   |     ^^^^^^^^^^^^- help: provide a definition for the function: `{ <body> }`
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/issues/issue-87812-path.rs b/tests/ui/parser/issues/issue-87812-path.rs
new file mode 100644
index 000000000..b88780876
--- /dev/null
+++ b/tests/ui/parser/issues/issue-87812-path.rs
@@ -0,0 +1,11 @@
+macro_rules! foo {
+    ( $f:path ) => {{
+        let _: usize = $f; //~ERROR
+    }};
+}
+
+struct Baz;
+
+fn main() {
+    foo!(Baz);
+}
diff --git a/tests/ui/parser/issues/issue-87812-path.stderr b/tests/ui/parser/issues/issue-87812-path.stderr
new file mode 100644
index 000000000..f8ee05175
--- /dev/null
+++ b/tests/ui/parser/issues/issue-87812-path.stderr
@@ -0,0 +1,16 @@
+error[E0308]: mismatched types
+  --> $DIR/issue-87812-path.rs:3:24
+   |
+LL |         let _: usize = $f;
+   |                -----   ^^ expected `usize`, found struct `Baz`
+   |                |
+   |                expected due to this
+...
+LL |     foo!(Baz);
+   |     --------- in this macro invocation
+   |
+   = note: this error originates in the macro `foo` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/parser/issues/issue-87812.rs b/tests/ui/parser/issues/issue-87812.rs
new file mode 100644
index 000000000..0ba87b995
--- /dev/null
+++ b/tests/ui/parser/issues/issue-87812.rs
@@ -0,0 +1,13 @@
+#![deny(break_with_label_and_loop)]
+
+macro_rules! foo {
+    ( $f:block ) => {
+        '_l: loop {
+            break '_l $f; //~ERROR
+        }
+    };
+}
+
+fn main() {
+    let x = foo!({ 3 });
+}
diff --git a/tests/ui/parser/issues/issue-87812.stderr b/tests/ui/parser/issues/issue-87812.stderr
new file mode 100644
index 000000000..d61ee23a5
--- /dev/null
+++ b/tests/ui/parser/issues/issue-87812.stderr
@@ -0,0 +1,22 @@
+error: this labeled break expression is easy to confuse with an unlabeled break with a labeled value expression
+  --> $DIR/issue-87812.rs:6:13
+   |
+LL |             break '_l $f;
+   |             ^^^^^^^^^^^^
+...
+LL |     let x = foo!({ 3 });
+   |             ----------- in this macro invocation
+   |
+note: the lint level is defined here
+  --> $DIR/issue-87812.rs:1:9
+   |
+LL | #![deny(break_with_label_and_loop)]
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^
+   = note: this error originates in the macro `foo` (in Nightly builds, run with -Z macro-backtrace for more info)
+help: wrap this expression in parentheses
+   |
+LL |             break '_l ($f);
+   |                       +  +
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-88276-unary-plus.fixed b/tests/ui/parser/issues/issue-88276-unary-plus.fixed
new file mode 100644
index 000000000..25b7c340f
--- /dev/null
+++ b/tests/ui/parser/issues/issue-88276-unary-plus.fixed
@@ -0,0 +1,8 @@
+// run-rustfix
+#[allow(unused_parens)]
+fn main() {
+    let _ = 1; //~ ERROR leading `+` is not supported
+    let _ = (1.0 + 2.0) * 3.0; //~ ERROR leading `+` is not supported
+                           //~| ERROR leading `+` is not supported
+    let _ = [3, 4+6]; //~ ERROR leading `+` is not supported
+}
diff --git a/tests/ui/parser/issues/issue-88276-unary-plus.rs b/tests/ui/parser/issues/issue-88276-unary-plus.rs
new file mode 100644
index 000000000..11b2e9d60
--- /dev/null
+++ b/tests/ui/parser/issues/issue-88276-unary-plus.rs
@@ -0,0 +1,8 @@
+// run-rustfix
+#[allow(unused_parens)]
+fn main() {
+    let _ = +1; //~ ERROR leading `+` is not supported
+    let _ = (1.0 + +2.0) * +3.0; //~ ERROR leading `+` is not supported
+                           //~| ERROR leading `+` is not supported
+    let _ = [+3, 4+6]; //~ ERROR leading `+` is not supported
+}
diff --git a/tests/ui/parser/issues/issue-88276-unary-plus.stderr b/tests/ui/parser/issues/issue-88276-unary-plus.stderr
new file mode 100644
index 000000000..363e08201
--- /dev/null
+++ b/tests/ui/parser/issues/issue-88276-unary-plus.stderr
@@ -0,0 +1,50 @@
+error: leading `+` is not supported
+  --> $DIR/issue-88276-unary-plus.rs:4:13
+   |
+LL |     let _ = +1;
+   |             ^ unexpected `+`
+   |
+help: try removing the `+`
+   |
+LL -     let _ = +1;
+LL +     let _ = 1;
+   |
+
+error: leading `+` is not supported
+  --> $DIR/issue-88276-unary-plus.rs:5:20
+   |
+LL |     let _ = (1.0 + +2.0) * +3.0;
+   |                    ^ unexpected `+`
+   |
+help: try removing the `+`
+   |
+LL -     let _ = (1.0 + +2.0) * +3.0;
+LL +     let _ = (1.0 + 2.0) * +3.0;
+   |
+
+error: leading `+` is not supported
+  --> $DIR/issue-88276-unary-plus.rs:5:28
+   |
+LL |     let _ = (1.0 + +2.0) * +3.0;
+   |                            ^ unexpected `+`
+   |
+help: try removing the `+`
+   |
+LL -     let _ = (1.0 + +2.0) * +3.0;
+LL +     let _ = (1.0 + +2.0) * 3.0;
+   |
+
+error: leading `+` is not supported
+  --> $DIR/issue-88276-unary-plus.rs:7:14
+   |
+LL |     let _ = [+3, 4+6];
+   |              ^ unexpected `+`
+   |
+help: try removing the `+`
+   |
+LL -     let _ = [+3, 4+6];
+LL +     let _ = [3, 4+6];
+   |
+
+error: aborting due to 4 previous errors
+
diff --git a/tests/ui/parser/issues/issue-88583-union-as-ident.rs b/tests/ui/parser/issues/issue-88583-union-as-ident.rs
new file mode 100644
index 000000000..b3d66d46b
--- /dev/null
+++ b/tests/ui/parser/issues/issue-88583-union-as-ident.rs
@@ -0,0 +1,15 @@
+// check-pass
+
+#![allow(non_camel_case_types)]
+
+struct union;
+
+impl union {
+    pub fn new() -> Self {
+        union { }
+    }
+}
+
+fn main() {
+    let _u = union::new();
+}
diff --git a/tests/ui/parser/issues/issue-88770.rs b/tests/ui/parser/issues/issue-88770.rs
new file mode 100644
index 000000000..bb69951c7
--- /dev/null
+++ b/tests/ui/parser/issues/issue-88770.rs
@@ -0,0 +1,11 @@
+// Regression test for the ICE described in #88770.
+
+// error-pattern:this file contains an unclosed delimiter
+// error-pattern:expected one of
+// error-pattern:missing `in` in `for` loop
+// error-pattern:expected one of `!`, `)`, `,`, `.`, `::`, `;`, `?`, `{`, or an operator, found `e`
+
+fn m(){print!("",(c for&g
+u
+e
+e
diff --git a/tests/ui/parser/issues/issue-88770.stderr b/tests/ui/parser/issues/issue-88770.stderr
new file mode 100644
index 000000000..4e3a21613
--- /dev/null
+++ b/tests/ui/parser/issues/issue-88770.stderr
@@ -0,0 +1,60 @@
+error: this file contains an unclosed delimiter
+  --> $DIR/issue-88770.rs:11:3
+   |
+LL | fn m(){print!("",(c for&g
+   |       -      -   - unclosed delimiter
+   |       |      |
+   |       |      unclosed delimiter
+   |       unclosed delimiter
+...
+LL | e
+   |   ^
+
+error: this file contains an unclosed delimiter
+  --> $DIR/issue-88770.rs:11:3
+   |
+LL | fn m(){print!("",(c for&g
+   |       -      -   - unclosed delimiter
+   |       |      |
+   |       |      unclosed delimiter
+   |       unclosed delimiter
+...
+LL | e
+   |   ^
+
+error: this file contains an unclosed delimiter
+  --> $DIR/issue-88770.rs:11:3
+   |
+LL | fn m(){print!("",(c for&g
+   |       -      -   - unclosed delimiter
+   |       |      |
+   |       |      unclosed delimiter
+   |       unclosed delimiter
+...
+LL | e
+   |   ^
+
+error: missing `in` in `for` loop
+  --> $DIR/issue-88770.rs:8:26
+   |
+LL |   fn m(){print!("",(c for&g
+   |  __________________________^
+LL | | u
+   | |_ help: try adding `in` here
+
+error: expected one of `!`, `)`, `,`, `.`, `::`, `?`, `{`, or an operator, found keyword `for`
+  --> $DIR/issue-88770.rs:8:21
+   |
+LL | fn m(){print!("",(c for&g
+   |                     ^^^ expected one of 8 possible tokens
+
+error: expected one of `!`, `)`, `,`, `.`, `::`, `;`, `?`, `{`, or an operator, found `e`
+  --> $DIR/issue-88770.rs:11:1
+   |
+LL | e
+   |  - expected one of 9 possible tokens
+LL | e
+   | ^ unexpected token
+
+error: aborting due to 6 previous errors
+
diff --git a/tests/ui/parser/issues/issue-88818.rs b/tests/ui/parser/issues/issue-88818.rs
new file mode 100644
index 000000000..b9233ca83
--- /dev/null
+++ b/tests/ui/parser/issues/issue-88818.rs
@@ -0,0 +1,10 @@
+// Regression test for #88818 (improve error message for missing trait
+// in `impl for X`).
+
+struct S { }
+impl for S { }
+//~^ ERROR: missing trait in a trait impl
+//~| HELP: add a trait here
+//~| HELP: for an inherent impl, drop this `for`
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-88818.stderr b/tests/ui/parser/issues/issue-88818.stderr
new file mode 100644
index 000000000..6e624c5a2
--- /dev/null
+++ b/tests/ui/parser/issues/issue-88818.stderr
@@ -0,0 +1,18 @@
+error: missing trait in a trait impl
+  --> $DIR/issue-88818.rs:5:5
+   |
+LL | impl for S { }
+   |     ^
+   |
+help: add a trait here
+   |
+LL | impl Trait for S { }
+   |      +++++
+help: for an inherent impl, drop this `for`
+   |
+LL - impl for S { }
+LL + impl S { }
+   |
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-89388.rs b/tests/ui/parser/issues/issue-89388.rs
new file mode 100644
index 000000000..9153c071e
--- /dev/null
+++ b/tests/ui/parser/issues/issue-89388.rs
@@ -0,0 +1,7 @@
+// Regression test for #89388.
+
+fn main() {
+    let option: Option<&[u8]> = Some(b"...");
+    let _ = option.map([_]::to_vec);
+    //~^ ERROR: missing angle brackets in associated item path
+}
diff --git a/tests/ui/parser/issues/issue-89388.stderr b/tests/ui/parser/issues/issue-89388.stderr
new file mode 100644
index 000000000..cf28bef0f
--- /dev/null
+++ b/tests/ui/parser/issues/issue-89388.stderr
@@ -0,0 +1,8 @@
+error: missing angle brackets in associated item path
+  --> $DIR/issue-89388.rs:5:24
+   |
+LL |     let _ = option.map([_]::to_vec);
+   |                        ^^^^^^^^^^^ help: try: `<[_]>::to_vec`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-89396.fixed b/tests/ui/parser/issues/issue-89396.fixed
new file mode 100644
index 000000000..823ad8cd1
--- /dev/null
+++ b/tests/ui/parser/issues/issue-89396.fixed
@@ -0,0 +1,16 @@
+// Regression test for issue #89396: Try to recover from a
+// `=>` -> `=` or `->` typo in a match arm.
+
+// run-rustfix
+
+fn main() {
+    let opt = Some(42);
+    let _ = match opt {
+        Some(_) => true,
+        //~^ ERROR: expected one of
+        //~| HELP: try using a fat arrow here
+        None => false,
+        //~^ ERROR: expected one of
+        //~| HELP: try using a fat arrow here
+    };
+}
diff --git a/tests/ui/parser/issues/issue-89396.rs b/tests/ui/parser/issues/issue-89396.rs
new file mode 100644
index 000000000..f1d9efa52
--- /dev/null
+++ b/tests/ui/parser/issues/issue-89396.rs
@@ -0,0 +1,16 @@
+// Regression test for issue #89396: Try to recover from a
+// `=>` -> `=` or `->` typo in a match arm.
+
+// run-rustfix
+
+fn main() {
+    let opt = Some(42);
+    let _ = match opt {
+        Some(_) = true,
+        //~^ ERROR: expected one of
+        //~| HELP: try using a fat arrow here
+        None -> false,
+        //~^ ERROR: expected one of
+        //~| HELP: try using a fat arrow here
+    };
+}
diff --git a/tests/ui/parser/issues/issue-89396.stderr b/tests/ui/parser/issues/issue-89396.stderr
new file mode 100644
index 000000000..504420574
--- /dev/null
+++ b/tests/ui/parser/issues/issue-89396.stderr
@@ -0,0 +1,20 @@
+error: expected one of `=>`, `if`, or `|`, found `=`
+  --> $DIR/issue-89396.rs:9:17
+   |
+LL |         Some(_) = true,
+   |                 ^
+   |                 |
+   |                 expected one of `=>`, `if`, or `|`
+   |                 help: try using a fat arrow here: `=>`
+
+error: expected one of `=>`, `@`, `if`, or `|`, found `->`
+  --> $DIR/issue-89396.rs:12:14
+   |
+LL |         None -> false,
+   |              ^^
+   |              |
+   |              expected one of `=>`, `@`, `if`, or `|`
+   |              help: try using a fat arrow here: `=>`
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/issues/issue-89574.rs b/tests/ui/parser/issues/issue-89574.rs
new file mode 100644
index 000000000..0a477f1aa
--- /dev/null
+++ b/tests/ui/parser/issues/issue-89574.rs
@@ -0,0 +1,4 @@
+fn main() {
+    const EMPTY_ARRAY = [];
+    //~^ missing type for `const` item
+}
diff --git a/tests/ui/parser/issues/issue-89574.stderr b/tests/ui/parser/issues/issue-89574.stderr
new file mode 100644
index 000000000..fb1312c78
--- /dev/null
+++ b/tests/ui/parser/issues/issue-89574.stderr
@@ -0,0 +1,8 @@
+error: missing type for `const` item
+  --> $DIR/issue-89574.rs:2:22
+   |
+LL |     const EMPTY_ARRAY = [];
+   |                      ^ help: provide a type for the item: `: <type>`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-89971-outer-attr-following-inner-attr-ice.rs b/tests/ui/parser/issues/issue-89971-outer-attr-following-inner-attr-ice.rs
new file mode 100644
index 000000000..fe67d9822
--- /dev/null
+++ b/tests/ui/parser/issues/issue-89971-outer-attr-following-inner-attr-ice.rs
@@ -0,0 +1,15 @@
+// aux-build:issue-89971-outer-attr-following-inner-attr-ice.rs
+
+#[macro_use]
+extern crate issue_89971_outer_attr_following_inner_attr_ice;
+
+fn main() {
+    Mew();
+    X {};
+}
+
+#![deny(missing_docs)]
+//~^ ERROR an inner attribute is not permitted in this context
+#[derive(ICE)]
+#[deny(missing_docs)]
+struct Mew();
diff --git a/tests/ui/parser/issues/issue-89971-outer-attr-following-inner-attr-ice.stderr b/tests/ui/parser/issues/issue-89971-outer-attr-following-inner-attr-ice.stderr
new file mode 100644
index 000000000..a5ee24445
--- /dev/null
+++ b/tests/ui/parser/issues/issue-89971-outer-attr-following-inner-attr-ice.stderr
@@ -0,0 +1,18 @@
+error: an inner attribute is not permitted in this context
+  --> $DIR/issue-89971-outer-attr-following-inner-attr-ice.rs:11:1
+   |
+LL | #![deny(missing_docs)]
+   | ^^^^^^^^^^^^^^^^^^^^^^
+...
+LL | struct Mew();
+   | ------------- the inner attribute doesn't annotate this struct
+   |
+   = note: inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually found at the beginning of source files
+help: to annotate the struct, change the attribute from inner to outer style
+   |
+LL - #![deny(missing_docs)]
+LL + #[deny(missing_docs)]
+   |
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-90993.rs b/tests/ui/parser/issues/issue-90993.rs
new file mode 100644
index 000000000..40e6fc748
--- /dev/null
+++ b/tests/ui/parser/issues/issue-90993.rs
@@ -0,0 +1,6 @@
+fn main() {
+    ...=.
+    //~^ ERROR: unexpected token: `...`
+    //~| ERROR: unexpected `=` after inclusive range
+    //~| ERROR: expected one of `-`, `;`, `}`, or path, found `.`
+}
diff --git a/tests/ui/parser/issues/issue-90993.stderr b/tests/ui/parser/issues/issue-90993.stderr
new file mode 100644
index 000000000..ab6bce410
--- /dev/null
+++ b/tests/ui/parser/issues/issue-90993.stderr
@@ -0,0 +1,31 @@
+error: unexpected token: `...`
+  --> $DIR/issue-90993.rs:2:5
+   |
+LL |     ...=.
+   |     ^^^
+   |
+help: use `..` for an exclusive range
+   |
+LL |     ..=.
+   |     ~~
+help: or `..=` for an inclusive range
+   |
+LL |     ..==.
+   |     ~~~
+
+error: unexpected `=` after inclusive range
+  --> $DIR/issue-90993.rs:2:5
+   |
+LL |     ...=.
+   |     ^^^^ help: use `..=` instead
+   |
+   = note: inclusive ranges end with a single equals sign (`..=`)
+
+error: expected one of `-`, `;`, `}`, or path, found `.`
+  --> $DIR/issue-90993.rs:2:9
+   |
+LL |     ...=.
+   |         ^ expected one of `-`, `;`, `}`, or path
+
+error: aborting due to 3 previous errors
+
diff --git a/tests/ui/parser/issues/issue-91461.rs b/tests/ui/parser/issues/issue-91461.rs
new file mode 100644
index 000000000..3e3c411c4
--- /dev/null
+++ b/tests/ui/parser/issues/issue-91461.rs
@@ -0,0 +1,6 @@
+fn main() {
+    a(_:b:,)
+    //~^ ERROR: expected identifier, found reserved identifier `_`
+    //~| ERROR: expected type, found `,`
+    //~| ERROR: expected type, found `,`
+}
diff --git a/tests/ui/parser/issues/issue-91461.stderr b/tests/ui/parser/issues/issue-91461.stderr
new file mode 100644
index 000000000..94fcf1721
--- /dev/null
+++ b/tests/ui/parser/issues/issue-91461.stderr
@@ -0,0 +1,31 @@
+error: expected identifier, found reserved identifier `_`
+  --> $DIR/issue-91461.rs:2:7
+   |
+LL |     a(_:b:,)
+   |       ^ expected identifier, found reserved identifier
+
+error: expected type, found `,`
+  --> $DIR/issue-91461.rs:2:11
+   |
+LL |     a(_:b:,)
+   |     -    -^ expected type
+   |     |    |
+   |     |    tried to parse a type due to this type ascription
+   |     while parsing this struct
+   |
+   = note: `#![feature(type_ascription)]` lets you annotate an expression with a type: `<expr>: <type>`
+   = note: see issue #23416 <https://github.com/rust-lang/rust/issues/23416> for more information
+
+error: expected type, found `,`
+  --> $DIR/issue-91461.rs:2:11
+   |
+LL |     a(_:b:,)
+   |          -^ expected type
+   |          |
+   |          tried to parse a type due to this type ascription
+   |
+   = note: `#![feature(type_ascription)]` lets you annotate an expression with a type: `<expr>: <type>`
+   = note: see issue #23416 <https://github.com/rust-lang/rust/issues/23416> for more information
+
+error: aborting due to 3 previous errors
+
diff --git a/tests/ui/parser/issues/issue-93282.rs b/tests/ui/parser/issues/issue-93282.rs
new file mode 100644
index 000000000..274245f1a
--- /dev/null
+++ b/tests/ui/parser/issues/issue-93282.rs
@@ -0,0 +1,16 @@
+fn main() {
+    f<'a,>
+    //~^ ERROR expected
+    //~| ERROR expected
+}
+
+fn bar(a: usize, b: usize) -> usize {
+    a + b
+}
+
+fn foo() {
+    let x = 1;
+    bar('y, x);
+    //~^ ERROR expected
+    //~| ERROR mismatched types
+}
diff --git a/tests/ui/parser/issues/issue-93282.stderr b/tests/ui/parser/issues/issue-93282.stderr
new file mode 100644
index 000000000..c6140bb82
--- /dev/null
+++ b/tests/ui/parser/issues/issue-93282.stderr
@@ -0,0 +1,50 @@
+error: expected `while`, `for`, `loop` or `{` after a label
+  --> $DIR/issue-93282.rs:2:9
+   |
+LL |     f<'a,>
+   |         ^ expected `while`, `for`, `loop` or `{` after a label
+   |
+help: add `'` to close the char literal
+   |
+LL |     f<'a',>
+   |         +
+
+error: expected one of `.`, `:`, `;`, `?`, `for`, `loop`, `while`, `}`, or an operator, found `,`
+  --> $DIR/issue-93282.rs:2:9
+   |
+LL |     f<'a,>
+   |         ^ expected one of 9 possible tokens
+   |
+help: use `::<...>` instead of `<...>` to specify lifetime, type, or const arguments
+   |
+LL |     f::<'a,>
+   |      ++
+
+error: expected `while`, `for`, `loop` or `{` after a label
+  --> $DIR/issue-93282.rs:13:11
+   |
+LL |     bar('y, x);
+   |           ^ expected `while`, `for`, `loop` or `{` after a label
+   |
+help: add `'` to close the char literal
+   |
+LL |     bar('y', x);
+   |           +
+
+error[E0308]: mismatched types
+  --> $DIR/issue-93282.rs:13:9
+   |
+LL |     bar('y, x);
+   |     --- ^^ expected `usize`, found `char`
+   |     |
+   |     arguments to this function are incorrect
+   |
+note: function defined here
+  --> $DIR/issue-93282.rs:7:4
+   |
+LL | fn bar(a: usize, b: usize) -> usize {
+   |    ^^^ --------
+
+error: aborting due to 4 previous errors
+
+For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/parser/issues/issue-93867.rs b/tests/ui/parser/issues/issue-93867.rs
new file mode 100644
index 000000000..507447923
--- /dev/null
+++ b/tests/ui/parser/issues/issue-93867.rs
@@ -0,0 +1,10 @@
+pub struct Entry<'a, K, V> {
+    k: &'a mut K,
+    v: V,
+}
+
+pub fn entry<'a, K, V>() -> Entry<'a K, V> {
+//                                  ^ missing comma
+//~^^ expected one of `,` or `>`, found `K`
+    unimplemented!()
+}
diff --git a/tests/ui/parser/issues/issue-93867.stderr b/tests/ui/parser/issues/issue-93867.stderr
new file mode 100644
index 000000000..ee0cb4efd
--- /dev/null
+++ b/tests/ui/parser/issues/issue-93867.stderr
@@ -0,0 +1,13 @@
+error: expected one of `,` or `>`, found `K`
+  --> $DIR/issue-93867.rs:6:38
+   |
+LL | pub fn entry<'a, K, V>() -> Entry<'a K, V> {
+   |                                      ^ expected one of `,` or `>`
+   |
+help: you might have meant to end the type parameters here
+   |
+LL | pub fn entry<'a, K, V>() -> Entry<'a> K, V> {
+   |                                     +
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-94340.rs b/tests/ui/parser/issues/issue-94340.rs
new file mode 100644
index 000000000..d0fb84a68
--- /dev/null
+++ b/tests/ui/parser/issues/issue-94340.rs
@@ -0,0 +1,8 @@
+// Make sure that unexpected inner attributes are not labeled as outer ones in diagnostics when
+// trying to parse an item and that they are subsequently ignored not triggering confusing extra
+// diagnostics like "expected item after attributes" which is not true for `include!` which can
+// include empty files.
+
+include!("auxiliary/issue-94340-inc.rs");
+
+fn main() {}
diff --git a/tests/ui/parser/issues/issue-94340.stderr b/tests/ui/parser/issues/issue-94340.stderr
new file mode 100644
index 000000000..9fd7c38a8
--- /dev/null
+++ b/tests/ui/parser/issues/issue-94340.stderr
@@ -0,0 +1,20 @@
+error: an inner attribute is not permitted in this context
+  --> $DIR/auxiliary/issue-94340-inc.rs:2:1
+   |
+LL | #![deny(rust_2018_idioms)]
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually found at the beginning of source files
+   = note: outer attributes, like `#[test]`, annotate the item following them
+
+error: an inner attribute is not permitted in this context
+  --> $DIR/auxiliary/issue-94340-inc.rs:3:1
+   |
+LL | #![deny(unused_must_use)]
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually found at the beginning of source files
+   = note: outer attributes, like `#[test]`, annotate the item following them
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/item-free-const-no-body-semantic-fail.rs b/tests/ui/parser/item-free-const-no-body-semantic-fail.rs
new file mode 100644
index 000000000..613b3c985
--- /dev/null
+++ b/tests/ui/parser/item-free-const-no-body-semantic-fail.rs
@@ -0,0 +1,7 @@
+// Semantically, a free `const` item cannot omit its body.
+
+fn main() {}
+
+const A: u8; //~ ERROR free constant item without body
+const B; //~ ERROR free constant item without body
+//~^ ERROR missing type for `const` item
diff --git a/tests/ui/parser/item-free-const-no-body-semantic-fail.stderr b/tests/ui/parser/item-free-const-no-body-semantic-fail.stderr
new file mode 100644
index 000000000..5365b0a1f
--- /dev/null
+++ b/tests/ui/parser/item-free-const-no-body-semantic-fail.stderr
@@ -0,0 +1,24 @@
+error: free constant item without body
+  --> $DIR/item-free-const-no-body-semantic-fail.rs:5:1
+   |
+LL | const A: u8;
+   | ^^^^^^^^^^^-
+   |            |
+   |            help: provide a definition for the constant: `= <expr>;`
+
+error: free constant item without body
+  --> $DIR/item-free-const-no-body-semantic-fail.rs:6:1
+   |
+LL | const B;
+   | ^^^^^^^-
+   |        |
+   |        help: provide a definition for the constant: `= <expr>;`
+
+error: missing type for `const` item
+  --> $DIR/item-free-const-no-body-semantic-fail.rs:6:8
+   |
+LL | const B;
+   |        ^ help: provide a type for the item: `: <type>`
+
+error: aborting due to 3 previous errors
+
diff --git a/tests/ui/parser/item-free-const-no-body-syntactic-pass.rs b/tests/ui/parser/item-free-const-no-body-syntactic-pass.rs
new file mode 100644
index 000000000..acfdd3c36
--- /dev/null
+++ b/tests/ui/parser/item-free-const-no-body-syntactic-pass.rs
@@ -0,0 +1,8 @@
+// Syntactically, a free `const` item can omit its body.
+
+// check-pass
+
+fn main() {}
+
+#[cfg(FALSE)]
+const X: u8;
diff --git a/tests/ui/parser/item-free-static-no-body-semantic-fail.rs b/tests/ui/parser/item-free-static-no-body-semantic-fail.rs
new file mode 100644
index 000000000..780479e3d
--- /dev/null
+++ b/tests/ui/parser/item-free-static-no-body-semantic-fail.rs
@@ -0,0 +1,11 @@
+// Semantically, a free `static` item cannot omit its body.
+
+fn main() {}
+
+static A: u8; //~ ERROR free static item without body
+static B; //~ ERROR free static item without body
+//~^ ERROR missing type for `static` item
+
+static mut C: u8; //~ ERROR free static item without body
+static mut D; //~ ERROR free static item without body
+//~^ ERROR missing type for `static mut` item
diff --git a/tests/ui/parser/item-free-static-no-body-semantic-fail.stderr b/tests/ui/parser/item-free-static-no-body-semantic-fail.stderr
new file mode 100644
index 000000000..1b61e4305
--- /dev/null
+++ b/tests/ui/parser/item-free-static-no-body-semantic-fail.stderr
@@ -0,0 +1,46 @@
+error: free static item without body
+  --> $DIR/item-free-static-no-body-semantic-fail.rs:5:1
+   |
+LL | static A: u8;
+   | ^^^^^^^^^^^^-
+   |             |
+   |             help: provide a definition for the static: `= <expr>;`
+
+error: free static item without body
+  --> $DIR/item-free-static-no-body-semantic-fail.rs:6:1
+   |
+LL | static B;
+   | ^^^^^^^^-
+   |         |
+   |         help: provide a definition for the static: `= <expr>;`
+
+error: free static item without body
+  --> $DIR/item-free-static-no-body-semantic-fail.rs:9:1
+   |
+LL | static mut C: u8;
+   | ^^^^^^^^^^^^^^^^-
+   |                 |
+   |                 help: provide a definition for the static: `= <expr>;`
+
+error: free static item without body
+  --> $DIR/item-free-static-no-body-semantic-fail.rs:10:1
+   |
+LL | static mut D;
+   | ^^^^^^^^^^^^-
+   |             |
+   |             help: provide a definition for the static: `= <expr>;`
+
+error: missing type for `static` item
+  --> $DIR/item-free-static-no-body-semantic-fail.rs:6:9
+   |
+LL | static B;
+   |         ^ help: provide a type for the item: `: <type>`
+
+error: missing type for `static mut` item
+  --> $DIR/item-free-static-no-body-semantic-fail.rs:10:13
+   |
+LL | static mut D;
+   |             ^ help: provide a type for the item: `: <type>`
+
+error: aborting due to 6 previous errors
+
diff --git a/tests/ui/parser/item-free-static-no-body-syntactic-pass.rs b/tests/ui/parser/item-free-static-no-body-syntactic-pass.rs
new file mode 100644
index 000000000..db0039204
--- /dev/null
+++ b/tests/ui/parser/item-free-static-no-body-syntactic-pass.rs
@@ -0,0 +1,8 @@
+// Syntactically, a free `const` item can omit its body.
+
+// check-pass
+
+fn main() {}
+
+#[cfg(FALSE)]
+static X: u8;
diff --git a/tests/ui/parser/item-free-type-bounds-semantic-fail.rs b/tests/ui/parser/item-free-type-bounds-semantic-fail.rs
new file mode 100644
index 000000000..9db4111fb
--- /dev/null
+++ b/tests/ui/parser/item-free-type-bounds-semantic-fail.rs
@@ -0,0 +1,20 @@
+fn main() {}
+
+fn semantics() {
+    type A: Ord;
+    //~^ ERROR bounds on `type`s in this context have no effect
+    //~| ERROR free type alias without body
+    type B: Ord = u8;
+    //~^ ERROR bounds on `type`s in this context have no effect
+    type C: Ord where 'static: 'static = u8;
+    //~^ ERROR bounds on `type`s in this context have no effect
+    type D<_T>: Ord;
+    //~^ ERROR bounds on `type`s in this context have no effect
+    //~| ERROR free type alias without body
+    type E<_T>: Ord = u8;
+    //~^ ERROR bounds on `type`s in this context have no effect
+    //~| ERROR type parameter `_T` is unused
+    type F<_T>: Ord where 'static: 'static = u8;
+    //~^ ERROR bounds on `type`s in this context have no effect
+    //~| ERROR type parameter `_T` is unused
+}
diff --git a/tests/ui/parser/item-free-type-bounds-semantic-fail.stderr b/tests/ui/parser/item-free-type-bounds-semantic-fail.stderr
new file mode 100644
index 000000000..1b0865128
--- /dev/null
+++ b/tests/ui/parser/item-free-type-bounds-semantic-fail.stderr
@@ -0,0 +1,67 @@
+error: free type alias without body
+  --> $DIR/item-free-type-bounds-semantic-fail.rs:4:5
+   |
+LL |     type A: Ord;
+   |     ^^^^^^^^^^^-
+   |                |
+   |                help: provide a definition for the type: `= <type>;`
+
+error: bounds on `type`s in this context have no effect
+  --> $DIR/item-free-type-bounds-semantic-fail.rs:4:13
+   |
+LL |     type A: Ord;
+   |             ^^^
+
+error: bounds on `type`s in this context have no effect
+  --> $DIR/item-free-type-bounds-semantic-fail.rs:7:13
+   |
+LL |     type B: Ord = u8;
+   |             ^^^
+
+error: bounds on `type`s in this context have no effect
+  --> $DIR/item-free-type-bounds-semantic-fail.rs:9:13
+   |
+LL |     type C: Ord where 'static: 'static = u8;
+   |             ^^^
+
+error: free type alias without body
+  --> $DIR/item-free-type-bounds-semantic-fail.rs:11:5
+   |
+LL |     type D<_T>: Ord;
+   |     ^^^^^^^^^^^^^^^-
+   |                    |
+   |                    help: provide a definition for the type: `= <type>;`
+
+error: bounds on `type`s in this context have no effect
+  --> $DIR/item-free-type-bounds-semantic-fail.rs:11:17
+   |
+LL |     type D<_T>: Ord;
+   |                 ^^^
+
+error: bounds on `type`s in this context have no effect
+  --> $DIR/item-free-type-bounds-semantic-fail.rs:14:17
+   |
+LL |     type E<_T>: Ord = u8;
+   |                 ^^^
+
+error: bounds on `type`s in this context have no effect
+  --> $DIR/item-free-type-bounds-semantic-fail.rs:17:17
+   |
+LL |     type F<_T>: Ord where 'static: 'static = u8;
+   |                 ^^^
+
+error[E0091]: type parameter `_T` is unused
+  --> $DIR/item-free-type-bounds-semantic-fail.rs:14:12
+   |
+LL |     type E<_T>: Ord = u8;
+   |            ^^ unused type parameter
+
+error[E0091]: type parameter `_T` is unused
+  --> $DIR/item-free-type-bounds-semantic-fail.rs:17:12
+   |
+LL |     type F<_T>: Ord where 'static: 'static = u8;
+   |            ^^ unused type parameter
+
+error: aborting due to 10 previous errors
+
+For more information about this error, try `rustc --explain E0091`.
diff --git a/tests/ui/parser/item-free-type-bounds-syntactic-pass.rs b/tests/ui/parser/item-free-type-bounds-syntactic-pass.rs
new file mode 100644
index 000000000..58fc926d0
--- /dev/null
+++ b/tests/ui/parser/item-free-type-bounds-syntactic-pass.rs
@@ -0,0 +1,13 @@
+// check-pass
+
+fn main() {}
+
+#[cfg(FALSE)]
+fn syntax() {
+    type A: Ord;
+    type B: Ord = u8;
+    type C: Ord where 'static: 'static = u8;
+    type D<_T>: Ord;
+    type E<_T>: Ord = u8;
+    type F<_T>: Ord where 'static: 'static = u8;
+}
diff --git a/tests/ui/parser/item-kw-case-mismatch.fixed b/tests/ui/parser/item-kw-case-mismatch.fixed
new file mode 100644
index 000000000..1794268f2
--- /dev/null
+++ b/tests/ui/parser/item-kw-case-mismatch.fixed
@@ -0,0 +1,34 @@
+// run-rustfix
+// edition:2018
+#![allow(unused_imports)]
+
+fn main() {}
+
+use std::ptr::read;  //~ ERROR keyword `use` is written in a wrong case
+use std::ptr::write; //~ ERROR keyword `use` is written in a wrong case
+
+async fn _a() {}
+//~^ ERROR keyword `fn` is written in a wrong case
+
+fn _b() {}
+//~^ ERROR keyword `fn` is written in a wrong case
+
+async fn _c() {}
+//~^ ERROR keyword `async` is written in a wrong case
+//~| ERROR keyword `fn` is written in a wrong case
+
+async fn _d() {}
+//~^ ERROR keyword `async` is written in a wrong case
+
+const unsafe fn _e() {}
+//~^ ERROR keyword `const` is written in a wrong case
+//~| ERROR keyword `unsafe` is written in a wrong case
+//~| ERROR keyword `fn` is written in a wrong case
+
+unsafe extern fn _f() {}
+//~^ ERROR keyword `unsafe` is written in a wrong case
+//~| ERROR keyword `extern` is written in a wrong case
+
+extern "C" fn _g() {}
+//~^ ERROR keyword `extern` is written in a wrong case
+//~| ERROR keyword `fn` is written in a wrong case
diff --git a/tests/ui/parser/item-kw-case-mismatch.rs b/tests/ui/parser/item-kw-case-mismatch.rs
new file mode 100644
index 000000000..ac8390efd
--- /dev/null
+++ b/tests/ui/parser/item-kw-case-mismatch.rs
@@ -0,0 +1,34 @@
+// run-rustfix
+// edition:2018
+#![allow(unused_imports)]
+
+fn main() {}
+
+Use std::ptr::read;  //~ ERROR keyword `use` is written in a wrong case
+USE std::ptr::write; //~ ERROR keyword `use` is written in a wrong case
+
+async Fn _a() {}
+//~^ ERROR keyword `fn` is written in a wrong case
+
+Fn _b() {}
+//~^ ERROR keyword `fn` is written in a wrong case
+
+aSYNC fN _c() {}
+//~^ ERROR keyword `async` is written in a wrong case
+//~| ERROR keyword `fn` is written in a wrong case
+
+Async fn _d() {}
+//~^ ERROR keyword `async` is written in a wrong case
+
+CONST UNSAFE FN _e() {}
+//~^ ERROR keyword `const` is written in a wrong case
+//~| ERROR keyword `unsafe` is written in a wrong case
+//~| ERROR keyword `fn` is written in a wrong case
+
+unSAFE EXTern fn _f() {}
+//~^ ERROR keyword `unsafe` is written in a wrong case
+//~| ERROR keyword `extern` is written in a wrong case
+
+EXTERN "C" FN _g() {}
+//~^ ERROR keyword `extern` is written in a wrong case
+//~| ERROR keyword `fn` is written in a wrong case
diff --git a/tests/ui/parser/item-kw-case-mismatch.stderr b/tests/ui/parser/item-kw-case-mismatch.stderr
new file mode 100644
index 000000000..e66dae825
--- /dev/null
+++ b/tests/ui/parser/item-kw-case-mismatch.stderr
@@ -0,0 +1,86 @@
+error: keyword `use` is written in a wrong case
+  --> $DIR/item-kw-case-mismatch.rs:7:1
+   |
+LL | Use std::ptr::read;
+   | ^^^ help: write it in the correct case (notice the capitalization): `use`
+
+error: keyword `use` is written in a wrong case
+  --> $DIR/item-kw-case-mismatch.rs:8:1
+   |
+LL | USE std::ptr::write;
+   | ^^^ help: write it in the correct case: `use`
+
+error: keyword `fn` is written in a wrong case
+  --> $DIR/item-kw-case-mismatch.rs:10:7
+   |
+LL | async Fn _a() {}
+   |       ^^ help: write it in the correct case (notice the capitalization): `fn`
+
+error: keyword `fn` is written in a wrong case
+  --> $DIR/item-kw-case-mismatch.rs:13:1
+   |
+LL | Fn _b() {}
+   | ^^ help: write it in the correct case (notice the capitalization): `fn`
+
+error: keyword `async` is written in a wrong case
+  --> $DIR/item-kw-case-mismatch.rs:16:1
+   |
+LL | aSYNC fN _c() {}
+   | ^^^^^ help: write it in the correct case: `async`
+
+error: keyword `fn` is written in a wrong case
+  --> $DIR/item-kw-case-mismatch.rs:16:7
+   |
+LL | aSYNC fN _c() {}
+   |       ^^ help: write it in the correct case: `fn`
+
+error: keyword `async` is written in a wrong case
+  --> $DIR/item-kw-case-mismatch.rs:20:1
+   |
+LL | Async fn _d() {}
+   | ^^^^^ help: write it in the correct case: `async`
+
+error: keyword `const` is written in a wrong case
+  --> $DIR/item-kw-case-mismatch.rs:23:1
+   |
+LL | CONST UNSAFE FN _e() {}
+   | ^^^^^ help: write it in the correct case: `const`
+
+error: keyword `unsafe` is written in a wrong case
+  --> $DIR/item-kw-case-mismatch.rs:23:7
+   |
+LL | CONST UNSAFE FN _e() {}
+   |       ^^^^^^ help: write it in the correct case: `unsafe`
+
+error: keyword `fn` is written in a wrong case
+  --> $DIR/item-kw-case-mismatch.rs:23:14
+   |
+LL | CONST UNSAFE FN _e() {}
+   |              ^^ help: write it in the correct case: `fn`
+
+error: keyword `unsafe` is written in a wrong case
+  --> $DIR/item-kw-case-mismatch.rs:28:1
+   |
+LL | unSAFE EXTern fn _f() {}
+   | ^^^^^^ help: write it in the correct case: `unsafe`
+
+error: keyword `extern` is written in a wrong case
+  --> $DIR/item-kw-case-mismatch.rs:28:8
+   |
+LL | unSAFE EXTern fn _f() {}
+   |        ^^^^^^ help: write it in the correct case: `extern`
+
+error: keyword `extern` is written in a wrong case
+  --> $DIR/item-kw-case-mismatch.rs:32:1
+   |
+LL | EXTERN "C" FN _g() {}
+   | ^^^^^^ help: write it in the correct case: `extern`
+
+error: keyword `fn` is written in a wrong case
+  --> $DIR/item-kw-case-mismatch.rs:32:12
+   |
+LL | EXTERN "C" FN _g() {}
+   |            ^^ help: write it in the correct case: `fn`
+
+error: aborting due to 14 previous errors
+
diff --git a/tests/ui/parser/item-needs-block.rs b/tests/ui/parser/item-needs-block.rs
new file mode 100644
index 000000000..4edac588e
--- /dev/null
+++ b/tests/ui/parser/item-needs-block.rs
@@ -0,0 +1,10 @@
+trait Trait;
+//~^ ERROR expected `{}`, found `;`
+
+impl Trait for ();
+//~^ ERROR expected `{}`, found `;`
+
+enum Enum;
+//~^ ERROR expected `{}`, found `;`
+
+fn main() {}
diff --git a/tests/ui/parser/item-needs-block.stderr b/tests/ui/parser/item-needs-block.stderr
new file mode 100644
index 000000000..3cabd0c73
--- /dev/null
+++ b/tests/ui/parser/item-needs-block.stderr
@@ -0,0 +1,26 @@
+error: expected `{}`, found `;`
+  --> $DIR/item-needs-block.rs:1:12
+   |
+LL | trait Trait;
+   |            ^
+   |
+   = help: try using `{}` instead
+
+error: expected `{}`, found `;`
+  --> $DIR/item-needs-block.rs:4:18
+   |
+LL | impl Trait for ();
+   |                  ^
+   |
+   = help: try using `{}` instead
+
+error: expected `{}`, found `;`
+  --> $DIR/item-needs-block.rs:7:10
+   |
+LL | enum Enum;
+   |          ^
+   |
+   = help: try using `{}` instead
+
+error: aborting due to 3 previous errors
+
diff --git a/tests/ui/parser/keyword-abstract.rs b/tests/ui/parser/keyword-abstract.rs
new file mode 100644
index 000000000..570206575
--- /dev/null
+++ b/tests/ui/parser/keyword-abstract.rs
@@ -0,0 +1,3 @@
+fn main() {
+    let abstract = (); //~ ERROR expected identifier, found reserved keyword `abstract`
+}
diff --git a/tests/ui/parser/keyword-abstract.stderr b/tests/ui/parser/keyword-abstract.stderr
new file mode 100644
index 000000000..b7d1ce7cd
--- /dev/null
+++ b/tests/ui/parser/keyword-abstract.stderr
@@ -0,0 +1,13 @@
+error: expected identifier, found reserved keyword `abstract`
+  --> $DIR/keyword-abstract.rs:2:9
+   |
+LL |     let abstract = ();
+   |         ^^^^^^^^ expected identifier, found reserved keyword
+   |
+help: escape `abstract` to use it as an identifier
+   |
+LL |     let r#abstract = ();
+   |         ++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/keyword-as-as-identifier.rs b/tests/ui/parser/keyword-as-as-identifier.rs
new file mode 100644
index 000000000..cd47c8a39
--- /dev/null
+++ b/tests/ui/parser/keyword-as-as-identifier.rs
@@ -0,0 +1,5 @@
+// This file was auto-generated using 'src/etc/generate-keyword-tests.py as'
+
+fn main() {
+    let as = "foo"; //~ error: expected identifier, found keyword `as`
+}
diff --git a/tests/ui/parser/keyword-as-as-identifier.stderr b/tests/ui/parser/keyword-as-as-identifier.stderr
new file mode 100644
index 000000000..3c5ad950d
--- /dev/null
+++ b/tests/ui/parser/keyword-as-as-identifier.stderr
@@ -0,0 +1,13 @@
+error: expected identifier, found keyword `as`
+  --> $DIR/keyword-as-as-identifier.rs:4:9
+   |
+LL |     let as = "foo";
+   |         ^^ expected identifier, found keyword
+   |
+help: escape `as` to use it as an identifier
+   |
+LL |     let r#as = "foo";
+   |         ++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/keyword-box-as-identifier.rs b/tests/ui/parser/keyword-box-as-identifier.rs
new file mode 100644
index 000000000..2cf49b66b
--- /dev/null
+++ b/tests/ui/parser/keyword-box-as-identifier.rs
@@ -0,0 +1,10 @@
+fn main() {
+    let box = 0;
+    //~^ ERROR expected pattern, found `=`
+    let box: bool;
+    //~^ ERROR expected pattern, found `:`
+    let mut box = 0;
+    //~^ ERROR expected pattern, found `=`
+    let (box,) = (0,);
+    //~^ ERROR expected pattern, found `,`
+}
diff --git a/tests/ui/parser/keyword-box-as-identifier.stderr b/tests/ui/parser/keyword-box-as-identifier.stderr
new file mode 100644
index 000000000..eaa1f8003
--- /dev/null
+++ b/tests/ui/parser/keyword-box-as-identifier.stderr
@@ -0,0 +1,66 @@
+error: expected pattern, found `=`
+  --> $DIR/keyword-box-as-identifier.rs:2:13
+   |
+LL |     let box = 0;
+   |             ^
+   |
+note: `box` is a reserved keyword
+  --> $DIR/keyword-box-as-identifier.rs:2:9
+   |
+LL |     let box = 0;
+   |         ^^^
+help: escape `box` to use it as an identifier
+   |
+LL |     let r#box = 0;
+   |         ++
+
+error: expected pattern, found `:`
+  --> $DIR/keyword-box-as-identifier.rs:4:12
+   |
+LL |     let box: bool;
+   |            ^
+   |
+note: `box` is a reserved keyword
+  --> $DIR/keyword-box-as-identifier.rs:4:9
+   |
+LL |     let box: bool;
+   |         ^^^
+help: escape `box` to use it as an identifier
+   |
+LL |     let r#box: bool;
+   |         ++
+
+error: expected pattern, found `=`
+  --> $DIR/keyword-box-as-identifier.rs:6:17
+   |
+LL |     let mut box = 0;
+   |                 ^
+   |
+note: `box` is a reserved keyword
+  --> $DIR/keyword-box-as-identifier.rs:6:13
+   |
+LL |     let mut box = 0;
+   |             ^^^
+help: escape `box` to use it as an identifier
+   |
+LL |     let mut r#box = 0;
+   |             ++
+
+error: expected pattern, found `,`
+  --> $DIR/keyword-box-as-identifier.rs:8:13
+   |
+LL |     let (box,) = (0,);
+   |             ^
+   |
+note: `box` is a reserved keyword
+  --> $DIR/keyword-box-as-identifier.rs:8:10
+   |
+LL |     let (box,) = (0,);
+   |          ^^^
+help: escape `box` to use it as an identifier
+   |
+LL |     let (r#box,) = (0,);
+   |          ++
+
+error: aborting due to 4 previous errors
+
diff --git a/tests/ui/parser/keyword-break-as-identifier.rs b/tests/ui/parser/keyword-break-as-identifier.rs
new file mode 100644
index 000000000..04b25a7aa
--- /dev/null
+++ b/tests/ui/parser/keyword-break-as-identifier.rs
@@ -0,0 +1,5 @@
+// This file was auto-generated using 'src/etc/generate-keyword-tests.py break'
+
+fn main() {
+    let break = "foo"; //~ error: expected identifier, found keyword `break`
+}
diff --git a/tests/ui/parser/keyword-break-as-identifier.stderr b/tests/ui/parser/keyword-break-as-identifier.stderr
new file mode 100644
index 000000000..a4535eb40
--- /dev/null
+++ b/tests/ui/parser/keyword-break-as-identifier.stderr
@@ -0,0 +1,13 @@
+error: expected identifier, found keyword `break`
+  --> $DIR/keyword-break-as-identifier.rs:4:9
+   |
+LL |     let break = "foo";
+   |         ^^^^^ expected identifier, found keyword
+   |
+help: escape `break` to use it as an identifier
+   |
+LL |     let r#break = "foo";
+   |         ++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/keyword-const-as-identifier.rs b/tests/ui/parser/keyword-const-as-identifier.rs
new file mode 100644
index 000000000..6a2d926bf
--- /dev/null
+++ b/tests/ui/parser/keyword-const-as-identifier.rs
@@ -0,0 +1,5 @@
+// This file was auto-generated using 'src/etc/generate-keyword-tests.py const'
+
+fn main() {
+    let const = "foo"; //~ error: expected identifier, found keyword `const`
+}
diff --git a/tests/ui/parser/keyword-const-as-identifier.stderr b/tests/ui/parser/keyword-const-as-identifier.stderr
new file mode 100644
index 000000000..31922f150
--- /dev/null
+++ b/tests/ui/parser/keyword-const-as-identifier.stderr
@@ -0,0 +1,13 @@
+error: expected identifier, found keyword `const`
+  --> $DIR/keyword-const-as-identifier.rs:4:9
+   |
+LL |     let const = "foo";
+   |         ^^^^^ expected identifier, found keyword
+   |
+help: escape `const` to use it as an identifier
+   |
+LL |     let r#const = "foo";
+   |         ++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/keyword-continue-as-identifier.rs b/tests/ui/parser/keyword-continue-as-identifier.rs
new file mode 100644
index 000000000..cfdd62a2d
--- /dev/null
+++ b/tests/ui/parser/keyword-continue-as-identifier.rs
@@ -0,0 +1,5 @@
+// This file was auto-generated using 'src/etc/generate-keyword-tests.py continue'
+
+fn main() {
+    let continue = "foo"; //~ error: expected identifier, found keyword `continue`
+}
diff --git a/tests/ui/parser/keyword-continue-as-identifier.stderr b/tests/ui/parser/keyword-continue-as-identifier.stderr
new file mode 100644
index 000000000..81285633f
--- /dev/null
+++ b/tests/ui/parser/keyword-continue-as-identifier.stderr
@@ -0,0 +1,13 @@
+error: expected identifier, found keyword `continue`
+  --> $DIR/keyword-continue-as-identifier.rs:4:9
+   |
+LL |     let continue = "foo";
+   |         ^^^^^^^^ expected identifier, found keyword
+   |
+help: escape `continue` to use it as an identifier
+   |
+LL |     let r#continue = "foo";
+   |         ++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/keyword-else-as-identifier.rs b/tests/ui/parser/keyword-else-as-identifier.rs
new file mode 100644
index 000000000..f12dac3ff
--- /dev/null
+++ b/tests/ui/parser/keyword-else-as-identifier.rs
@@ -0,0 +1,5 @@
+// This file was auto-generated using 'src/etc/generate-keyword-tests.py else'
+
+fn main() {
+    let else = "foo"; //~ error: expected identifier, found keyword `else`
+}
diff --git a/tests/ui/parser/keyword-else-as-identifier.stderr b/tests/ui/parser/keyword-else-as-identifier.stderr
new file mode 100644
index 000000000..2125fe84a
--- /dev/null
+++ b/tests/ui/parser/keyword-else-as-identifier.stderr
@@ -0,0 +1,13 @@
+error: expected identifier, found keyword `else`
+  --> $DIR/keyword-else-as-identifier.rs:4:9
+   |
+LL |     let else = "foo";
+   |         ^^^^ expected identifier, found keyword
+   |
+help: escape `else` to use it as an identifier
+   |
+LL |     let r#else = "foo";
+   |         ++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/keyword-enum-as-identifier.rs b/tests/ui/parser/keyword-enum-as-identifier.rs
new file mode 100644
index 000000000..fe66230d0
--- /dev/null
+++ b/tests/ui/parser/keyword-enum-as-identifier.rs
@@ -0,0 +1,5 @@
+// This file was auto-generated using 'src/etc/generate-keyword-tests.py enum'
+
+fn main() {
+    let enum = "foo"; //~ error: expected identifier, found keyword `enum`
+}
diff --git a/tests/ui/parser/keyword-enum-as-identifier.stderr b/tests/ui/parser/keyword-enum-as-identifier.stderr
new file mode 100644
index 000000000..92d092ccb
--- /dev/null
+++ b/tests/ui/parser/keyword-enum-as-identifier.stderr
@@ -0,0 +1,13 @@
+error: expected identifier, found keyword `enum`
+  --> $DIR/keyword-enum-as-identifier.rs:4:9
+   |
+LL |     let enum = "foo";
+   |         ^^^^ expected identifier, found keyword
+   |
+help: escape `enum` to use it as an identifier
+   |
+LL |     let r#enum = "foo";
+   |         ++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/keyword-final.rs b/tests/ui/parser/keyword-final.rs
new file mode 100644
index 000000000..a79a11032
--- /dev/null
+++ b/tests/ui/parser/keyword-final.rs
@@ -0,0 +1,3 @@
+fn main() {
+    let final = (); //~ ERROR expected identifier, found reserved keyword `final`
+}
diff --git a/tests/ui/parser/keyword-final.stderr b/tests/ui/parser/keyword-final.stderr
new file mode 100644
index 000000000..f1f9f2e2c
--- /dev/null
+++ b/tests/ui/parser/keyword-final.stderr
@@ -0,0 +1,13 @@
+error: expected identifier, found reserved keyword `final`
+  --> $DIR/keyword-final.rs:2:9
+   |
+LL |     let final = ();
+   |         ^^^^^ expected identifier, found reserved keyword
+   |
+help: escape `final` to use it as an identifier
+   |
+LL |     let r#final = ();
+   |         ++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/keyword-fn-as-identifier.rs b/tests/ui/parser/keyword-fn-as-identifier.rs
new file mode 100644
index 000000000..f30e115f7
--- /dev/null
+++ b/tests/ui/parser/keyword-fn-as-identifier.rs
@@ -0,0 +1,5 @@
+// This file was auto-generated using 'src/etc/generate-keyword-tests.py fn'
+
+fn main() {
+    let fn = "foo"; //~ error: expected identifier, found keyword `fn`
+}
diff --git a/tests/ui/parser/keyword-fn-as-identifier.stderr b/tests/ui/parser/keyword-fn-as-identifier.stderr
new file mode 100644
index 000000000..645efbcae
--- /dev/null
+++ b/tests/ui/parser/keyword-fn-as-identifier.stderr
@@ -0,0 +1,13 @@
+error: expected identifier, found keyword `fn`
+  --> $DIR/keyword-fn-as-identifier.rs:4:9
+   |
+LL |     let fn = "foo";
+   |         ^^ expected identifier, found keyword
+   |
+help: escape `fn` to use it as an identifier
+   |
+LL |     let r#fn = "foo";
+   |         ++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/keyword-for-as-identifier.rs b/tests/ui/parser/keyword-for-as-identifier.rs
new file mode 100644
index 000000000..9e8a2ad53
--- /dev/null
+++ b/tests/ui/parser/keyword-for-as-identifier.rs
@@ -0,0 +1,5 @@
+// This file was auto-generated using 'src/etc/generate-keyword-tests.py for'
+
+fn main() {
+    let for = "foo"; //~ error: expected identifier, found keyword `for`
+}
diff --git a/tests/ui/parser/keyword-for-as-identifier.stderr b/tests/ui/parser/keyword-for-as-identifier.stderr
new file mode 100644
index 000000000..26407cc4d
--- /dev/null
+++ b/tests/ui/parser/keyword-for-as-identifier.stderr
@@ -0,0 +1,13 @@
+error: expected identifier, found keyword `for`
+  --> $DIR/keyword-for-as-identifier.rs:4:9
+   |
+LL |     let for = "foo";
+   |         ^^^ expected identifier, found keyword
+   |
+help: escape `for` to use it as an identifier
+   |
+LL |     let r#for = "foo";
+   |         ++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/keyword-if-as-identifier.rs b/tests/ui/parser/keyword-if-as-identifier.rs
new file mode 100644
index 000000000..0bd5756af
--- /dev/null
+++ b/tests/ui/parser/keyword-if-as-identifier.rs
@@ -0,0 +1,5 @@
+// This file was auto-generated using 'src/etc/generate-keyword-tests.py if'
+
+fn main() {
+    let if = "foo"; //~ error: expected identifier, found keyword `if`
+}
diff --git a/tests/ui/parser/keyword-if-as-identifier.stderr b/tests/ui/parser/keyword-if-as-identifier.stderr
new file mode 100644
index 000000000..26f9a15a7
--- /dev/null
+++ b/tests/ui/parser/keyword-if-as-identifier.stderr
@@ -0,0 +1,13 @@
+error: expected identifier, found keyword `if`
+  --> $DIR/keyword-if-as-identifier.rs:4:9
+   |
+LL |     let if = "foo";
+   |         ^^ expected identifier, found keyword
+   |
+help: escape `if` to use it as an identifier
+   |
+LL |     let r#if = "foo";
+   |         ++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/keyword-impl-as-identifier.rs b/tests/ui/parser/keyword-impl-as-identifier.rs
new file mode 100644
index 000000000..df529bae0
--- /dev/null
+++ b/tests/ui/parser/keyword-impl-as-identifier.rs
@@ -0,0 +1,5 @@
+// This file was auto-generated using 'src/etc/generate-keyword-tests.py impl'
+
+fn main() {
+    let impl = "foo"; //~ error: expected identifier, found keyword `impl`
+}
diff --git a/tests/ui/parser/keyword-impl-as-identifier.stderr b/tests/ui/parser/keyword-impl-as-identifier.stderr
new file mode 100644
index 000000000..73a50bc38
--- /dev/null
+++ b/tests/ui/parser/keyword-impl-as-identifier.stderr
@@ -0,0 +1,13 @@
+error: expected identifier, found keyword `impl`
+  --> $DIR/keyword-impl-as-identifier.rs:4:9
+   |
+LL |     let impl = "foo";
+   |         ^^^^ expected identifier, found keyword
+   |
+help: escape `impl` to use it as an identifier
+   |
+LL |     let r#impl = "foo";
+   |         ++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/keyword-in-as-identifier.rs b/tests/ui/parser/keyword-in-as-identifier.rs
new file mode 100644
index 000000000..e4499dea2
--- /dev/null
+++ b/tests/ui/parser/keyword-in-as-identifier.rs
@@ -0,0 +1,5 @@
+// This file was auto-generated using 'src/etc/generate-keyword-tests.py in'
+
+fn main() {
+    let in = "foo"; //~ error: expected pattern, found keyword `in`
+}
diff --git a/tests/ui/parser/keyword-in-as-identifier.stderr b/tests/ui/parser/keyword-in-as-identifier.stderr
new file mode 100644
index 000000000..98332b723
--- /dev/null
+++ b/tests/ui/parser/keyword-in-as-identifier.stderr
@@ -0,0 +1,8 @@
+error: expected pattern, found keyword `in`
+  --> $DIR/keyword-in-as-identifier.rs:4:9
+   |
+LL |     let in = "foo";
+   |         ^^ expected pattern
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/keyword-let-as-identifier.rs b/tests/ui/parser/keyword-let-as-identifier.rs
new file mode 100644
index 000000000..9b1183501
--- /dev/null
+++ b/tests/ui/parser/keyword-let-as-identifier.rs
@@ -0,0 +1,5 @@
+// This file was auto-generated using 'src/etc/generate-keyword-tests.py let'
+
+fn main() {
+    let let = "foo"; //~ error: expected identifier, found keyword `let`
+}
diff --git a/tests/ui/parser/keyword-let-as-identifier.stderr b/tests/ui/parser/keyword-let-as-identifier.stderr
new file mode 100644
index 000000000..86faaed38
--- /dev/null
+++ b/tests/ui/parser/keyword-let-as-identifier.stderr
@@ -0,0 +1,13 @@
+error: expected identifier, found keyword `let`
+  --> $DIR/keyword-let-as-identifier.rs:4:9
+   |
+LL |     let let = "foo";
+   |         ^^^ expected identifier, found keyword
+   |
+help: escape `let` to use it as an identifier
+   |
+LL |     let r#let = "foo";
+   |         ++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/keyword-loop-as-identifier.rs b/tests/ui/parser/keyword-loop-as-identifier.rs
new file mode 100644
index 000000000..46914a19b
--- /dev/null
+++ b/tests/ui/parser/keyword-loop-as-identifier.rs
@@ -0,0 +1,5 @@
+// This file was auto-generated using 'src/etc/generate-keyword-tests.py loop'
+
+fn main() {
+    let loop = "foo"; //~ error: expected identifier, found keyword `loop`
+}
diff --git a/tests/ui/parser/keyword-loop-as-identifier.stderr b/tests/ui/parser/keyword-loop-as-identifier.stderr
new file mode 100644
index 000000000..304ad61cc
--- /dev/null
+++ b/tests/ui/parser/keyword-loop-as-identifier.stderr
@@ -0,0 +1,13 @@
+error: expected identifier, found keyword `loop`
+  --> $DIR/keyword-loop-as-identifier.rs:4:9
+   |
+LL |     let loop = "foo";
+   |         ^^^^ expected identifier, found keyword
+   |
+help: escape `loop` to use it as an identifier
+   |
+LL |     let r#loop = "foo";
+   |         ++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/keyword-match-as-identifier.rs b/tests/ui/parser/keyword-match-as-identifier.rs
new file mode 100644
index 000000000..d3cecb991
--- /dev/null
+++ b/tests/ui/parser/keyword-match-as-identifier.rs
@@ -0,0 +1,5 @@
+// This file was auto-generated using 'src/etc/generate-keyword-tests.py match'
+
+fn main() {
+    let match = "foo"; //~ error: expected identifier, found keyword `match`
+}
diff --git a/tests/ui/parser/keyword-match-as-identifier.stderr b/tests/ui/parser/keyword-match-as-identifier.stderr
new file mode 100644
index 000000000..25ac397fb
--- /dev/null
+++ b/tests/ui/parser/keyword-match-as-identifier.stderr
@@ -0,0 +1,13 @@
+error: expected identifier, found keyword `match`
+  --> $DIR/keyword-match-as-identifier.rs:4:9
+   |
+LL |     let match = "foo";
+   |         ^^^^^ expected identifier, found keyword
+   |
+help: escape `match` to use it as an identifier
+   |
+LL |     let r#match = "foo";
+   |         ++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/keyword-mod-as-identifier.rs b/tests/ui/parser/keyword-mod-as-identifier.rs
new file mode 100644
index 000000000..b9c7b6c78
--- /dev/null
+++ b/tests/ui/parser/keyword-mod-as-identifier.rs
@@ -0,0 +1,5 @@
+// This file was auto-generated using 'src/etc/generate-keyword-tests.py mod'
+
+fn main() {
+    let mod = "foo"; //~ error: expected identifier, found keyword `mod`
+}
diff --git a/tests/ui/parser/keyword-mod-as-identifier.stderr b/tests/ui/parser/keyword-mod-as-identifier.stderr
new file mode 100644
index 000000000..d5688e871
--- /dev/null
+++ b/tests/ui/parser/keyword-mod-as-identifier.stderr
@@ -0,0 +1,13 @@
+error: expected identifier, found keyword `mod`
+  --> $DIR/keyword-mod-as-identifier.rs:4:9
+   |
+LL |     let mod = "foo";
+   |         ^^^ expected identifier, found keyword
+   |
+help: escape `mod` to use it as an identifier
+   |
+LL |     let r#mod = "foo";
+   |         ++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/keyword-move-as-identifier.rs b/tests/ui/parser/keyword-move-as-identifier.rs
new file mode 100644
index 000000000..65be02e3c
--- /dev/null
+++ b/tests/ui/parser/keyword-move-as-identifier.rs
@@ -0,0 +1,5 @@
+// This file was auto-generated using 'src/etc/generate-keyword-tests.py move'
+
+fn main() {
+    let move = "foo"; //~ error: expected identifier, found keyword `move`
+}
diff --git a/tests/ui/parser/keyword-move-as-identifier.stderr b/tests/ui/parser/keyword-move-as-identifier.stderr
new file mode 100644
index 000000000..75653cffc
--- /dev/null
+++ b/tests/ui/parser/keyword-move-as-identifier.stderr
@@ -0,0 +1,13 @@
+error: expected identifier, found keyword `move`
+  --> $DIR/keyword-move-as-identifier.rs:4:9
+   |
+LL |     let move = "foo";
+   |         ^^^^ expected identifier, found keyword
+   |
+help: escape `move` to use it as an identifier
+   |
+LL |     let r#move = "foo";
+   |         ++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/keyword-mut-as-identifier.rs b/tests/ui/parser/keyword-mut-as-identifier.rs
new file mode 100644
index 000000000..9b919d2b3
--- /dev/null
+++ b/tests/ui/parser/keyword-mut-as-identifier.rs
@@ -0,0 +1,3 @@
+fn main() {
+    let mut = "foo"; //~ error: expected identifier, found `=`
+}
diff --git a/tests/ui/parser/keyword-mut-as-identifier.stderr b/tests/ui/parser/keyword-mut-as-identifier.stderr
new file mode 100644
index 000000000..040960835
--- /dev/null
+++ b/tests/ui/parser/keyword-mut-as-identifier.stderr
@@ -0,0 +1,8 @@
+error: expected identifier, found `=`
+  --> $DIR/keyword-mut-as-identifier.rs:2:13
+   |
+LL |     let mut = "foo";
+   |             ^ expected identifier
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/keyword-override.rs b/tests/ui/parser/keyword-override.rs
new file mode 100644
index 000000000..009bebd7d
--- /dev/null
+++ b/tests/ui/parser/keyword-override.rs
@@ -0,0 +1,3 @@
+fn main() {
+    let override = (); //~ ERROR expected identifier, found reserved keyword `override`
+}
diff --git a/tests/ui/parser/keyword-override.stderr b/tests/ui/parser/keyword-override.stderr
new file mode 100644
index 000000000..cdb573686
--- /dev/null
+++ b/tests/ui/parser/keyword-override.stderr
@@ -0,0 +1,13 @@
+error: expected identifier, found reserved keyword `override`
+  --> $DIR/keyword-override.rs:2:9
+   |
+LL |     let override = ();
+   |         ^^^^^^^^ expected identifier, found reserved keyword
+   |
+help: escape `override` to use it as an identifier
+   |
+LL |     let r#override = ();
+   |         ++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/keyword-pub-as-identifier.rs b/tests/ui/parser/keyword-pub-as-identifier.rs
new file mode 100644
index 000000000..2b2bb1411
--- /dev/null
+++ b/tests/ui/parser/keyword-pub-as-identifier.rs
@@ -0,0 +1,5 @@
+// This file was auto-generated using 'src/etc/generate-keyword-tests.py pub'
+
+fn main() {
+    let pub = "foo"; //~ error: expected identifier, found keyword `pub`
+}
diff --git a/tests/ui/parser/keyword-pub-as-identifier.stderr b/tests/ui/parser/keyword-pub-as-identifier.stderr
new file mode 100644
index 000000000..8d513507c
--- /dev/null
+++ b/tests/ui/parser/keyword-pub-as-identifier.stderr
@@ -0,0 +1,13 @@
+error: expected identifier, found keyword `pub`
+  --> $DIR/keyword-pub-as-identifier.rs:4:9
+   |
+LL |     let pub = "foo";
+   |         ^^^ expected identifier, found keyword
+   |
+help: escape `pub` to use it as an identifier
+   |
+LL |     let r#pub = "foo";
+   |         ++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/keyword-ref-as-identifier.rs b/tests/ui/parser/keyword-ref-as-identifier.rs
new file mode 100644
index 000000000..f5e04b5db
--- /dev/null
+++ b/tests/ui/parser/keyword-ref-as-identifier.rs
@@ -0,0 +1,3 @@
+fn main() {
+    let ref = "foo"; //~ error: expected identifier, found `=`
+}
diff --git a/tests/ui/parser/keyword-ref-as-identifier.stderr b/tests/ui/parser/keyword-ref-as-identifier.stderr
new file mode 100644
index 000000000..618043d89
--- /dev/null
+++ b/tests/ui/parser/keyword-ref-as-identifier.stderr
@@ -0,0 +1,8 @@
+error: expected identifier, found `=`
+  --> $DIR/keyword-ref-as-identifier.rs:2:13
+   |
+LL |     let ref = "foo";
+   |             ^ expected identifier
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/keyword-return-as-identifier.rs b/tests/ui/parser/keyword-return-as-identifier.rs
new file mode 100644
index 000000000..e1a2db5e4
--- /dev/null
+++ b/tests/ui/parser/keyword-return-as-identifier.rs
@@ -0,0 +1,5 @@
+// This file was auto-generated using 'src/etc/generate-keyword-tests.py return'
+
+fn main() {
+    let return = "foo"; //~ error: expected identifier, found keyword `return`
+}
diff --git a/tests/ui/parser/keyword-return-as-identifier.stderr b/tests/ui/parser/keyword-return-as-identifier.stderr
new file mode 100644
index 000000000..eeb8e468b
--- /dev/null
+++ b/tests/ui/parser/keyword-return-as-identifier.stderr
@@ -0,0 +1,13 @@
+error: expected identifier, found keyword `return`
+  --> $DIR/keyword-return-as-identifier.rs:4:9
+   |
+LL |     let return = "foo";
+   |         ^^^^^^ expected identifier, found keyword
+   |
+help: escape `return` to use it as an identifier
+   |
+LL |     let r#return = "foo";
+   |         ++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/keyword-static-as-identifier.rs b/tests/ui/parser/keyword-static-as-identifier.rs
new file mode 100644
index 000000000..423b9854b
--- /dev/null
+++ b/tests/ui/parser/keyword-static-as-identifier.rs
@@ -0,0 +1,5 @@
+// This file was auto-generated using 'src/etc/generate-keyword-tests.py static'
+
+fn main() {
+    let static = "foo"; //~ error: expected identifier, found keyword `static`
+}
diff --git a/tests/ui/parser/keyword-static-as-identifier.stderr b/tests/ui/parser/keyword-static-as-identifier.stderr
new file mode 100644
index 000000000..a3213e2f2
--- /dev/null
+++ b/tests/ui/parser/keyword-static-as-identifier.stderr
@@ -0,0 +1,13 @@
+error: expected identifier, found keyword `static`
+  --> $DIR/keyword-static-as-identifier.rs:4:9
+   |
+LL |     let static = "foo";
+   |         ^^^^^^ expected identifier, found keyword
+   |
+help: escape `static` to use it as an identifier
+   |
+LL |     let r#static = "foo";
+   |         ++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/keyword-struct-as-identifier.rs b/tests/ui/parser/keyword-struct-as-identifier.rs
new file mode 100644
index 000000000..18cfe1159
--- /dev/null
+++ b/tests/ui/parser/keyword-struct-as-identifier.rs
@@ -0,0 +1,5 @@
+// This file was auto-generated using 'src/etc/generate-keyword-tests.py struct'
+
+fn main() {
+    let struct = "foo"; //~ error: expected identifier, found keyword `struct`
+}
diff --git a/tests/ui/parser/keyword-struct-as-identifier.stderr b/tests/ui/parser/keyword-struct-as-identifier.stderr
new file mode 100644
index 000000000..b73361a55
--- /dev/null
+++ b/tests/ui/parser/keyword-struct-as-identifier.stderr
@@ -0,0 +1,13 @@
+error: expected identifier, found keyword `struct`
+  --> $DIR/keyword-struct-as-identifier.rs:4:9
+   |
+LL |     let struct = "foo";
+   |         ^^^^^^ expected identifier, found keyword
+   |
+help: escape `struct` to use it as an identifier
+   |
+LL |     let r#struct = "foo";
+   |         ++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/keyword-trait-as-identifier.rs b/tests/ui/parser/keyword-trait-as-identifier.rs
new file mode 100644
index 000000000..67f81167d
--- /dev/null
+++ b/tests/ui/parser/keyword-trait-as-identifier.rs
@@ -0,0 +1,5 @@
+// This file was auto-generated using 'src/etc/generate-keyword-tests.py trait'
+
+fn main() {
+    let trait = "foo"; //~ error: expected identifier, found keyword `trait`
+}
diff --git a/tests/ui/parser/keyword-trait-as-identifier.stderr b/tests/ui/parser/keyword-trait-as-identifier.stderr
new file mode 100644
index 000000000..56ef5f606
--- /dev/null
+++ b/tests/ui/parser/keyword-trait-as-identifier.stderr
@@ -0,0 +1,13 @@
+error: expected identifier, found keyword `trait`
+  --> $DIR/keyword-trait-as-identifier.rs:4:9
+   |
+LL |     let trait = "foo";
+   |         ^^^^^ expected identifier, found keyword
+   |
+help: escape `trait` to use it as an identifier
+   |
+LL |     let r#trait = "foo";
+   |         ++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/keyword-try-as-identifier-edition2018.rs b/tests/ui/parser/keyword-try-as-identifier-edition2018.rs
new file mode 100644
index 000000000..4fa37bdb0
--- /dev/null
+++ b/tests/ui/parser/keyword-try-as-identifier-edition2018.rs
@@ -0,0 +1,5 @@
+// compile-flags: --edition 2018
+
+fn main() {
+    let try = "foo"; //~ error: expected identifier, found reserved keyword `try`
+}
diff --git a/tests/ui/parser/keyword-try-as-identifier-edition2018.stderr b/tests/ui/parser/keyword-try-as-identifier-edition2018.stderr
new file mode 100644
index 000000000..94a106d47
--- /dev/null
+++ b/tests/ui/parser/keyword-try-as-identifier-edition2018.stderr
@@ -0,0 +1,13 @@
+error: expected identifier, found reserved keyword `try`
+  --> $DIR/keyword-try-as-identifier-edition2018.rs:4:9
+   |
+LL |     let try = "foo";
+   |         ^^^ expected identifier, found reserved keyword
+   |
+help: escape `try` to use it as an identifier
+   |
+LL |     let r#try = "foo";
+   |         ++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/keyword-type-as-identifier.rs b/tests/ui/parser/keyword-type-as-identifier.rs
new file mode 100644
index 000000000..04adddf72
--- /dev/null
+++ b/tests/ui/parser/keyword-type-as-identifier.rs
@@ -0,0 +1,5 @@
+// This file was auto-generated using 'src/etc/generate-keyword-tests.py type'
+
+fn main() {
+    let type = "foo"; //~ error: expected identifier, found keyword `type`
+}
diff --git a/tests/ui/parser/keyword-type-as-identifier.stderr b/tests/ui/parser/keyword-type-as-identifier.stderr
new file mode 100644
index 000000000..624c1006b
--- /dev/null
+++ b/tests/ui/parser/keyword-type-as-identifier.stderr
@@ -0,0 +1,13 @@
+error: expected identifier, found keyword `type`
+  --> $DIR/keyword-type-as-identifier.rs:4:9
+   |
+LL |     let type = "foo";
+   |         ^^^^ expected identifier, found keyword
+   |
+help: escape `type` to use it as an identifier
+   |
+LL |     let r#type = "foo";
+   |         ++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/keyword-typeof.rs b/tests/ui/parser/keyword-typeof.rs
new file mode 100644
index 000000000..29dc77d27
--- /dev/null
+++ b/tests/ui/parser/keyword-typeof.rs
@@ -0,0 +1,3 @@
+fn main() {
+    let typeof = (); //~ ERROR expected identifier, found reserved keyword `typeof`
+}
diff --git a/tests/ui/parser/keyword-typeof.stderr b/tests/ui/parser/keyword-typeof.stderr
new file mode 100644
index 000000000..4c5324505
--- /dev/null
+++ b/tests/ui/parser/keyword-typeof.stderr
@@ -0,0 +1,13 @@
+error: expected identifier, found reserved keyword `typeof`
+  --> $DIR/keyword-typeof.rs:2:9
+   |
+LL |     let typeof = ();
+   |         ^^^^^^ expected identifier, found reserved keyword
+   |
+help: escape `typeof` to use it as an identifier
+   |
+LL |     let r#typeof = ();
+   |         ++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/keyword-unsafe-as-identifier.rs b/tests/ui/parser/keyword-unsafe-as-identifier.rs
new file mode 100644
index 000000000..0ff6d188c
--- /dev/null
+++ b/tests/ui/parser/keyword-unsafe-as-identifier.rs
@@ -0,0 +1,5 @@
+// This file was auto-generated using 'src/etc/generate-keyword-tests.py unsafe'
+
+fn main() {
+    let unsafe = "foo"; //~ error: expected identifier, found keyword `unsafe`
+}
diff --git a/tests/ui/parser/keyword-unsafe-as-identifier.stderr b/tests/ui/parser/keyword-unsafe-as-identifier.stderr
new file mode 100644
index 000000000..b552c9cd3
--- /dev/null
+++ b/tests/ui/parser/keyword-unsafe-as-identifier.stderr
@@ -0,0 +1,13 @@
+error: expected identifier, found keyword `unsafe`
+  --> $DIR/keyword-unsafe-as-identifier.rs:4:9
+   |
+LL |     let unsafe = "foo";
+   |         ^^^^^^ expected identifier, found keyword
+   |
+help: escape `unsafe` to use it as an identifier
+   |
+LL |     let r#unsafe = "foo";
+   |         ++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/keyword-use-as-identifier.rs b/tests/ui/parser/keyword-use-as-identifier.rs
new file mode 100644
index 000000000..821bedee0
--- /dev/null
+++ b/tests/ui/parser/keyword-use-as-identifier.rs
@@ -0,0 +1,5 @@
+// This file was auto-generated using 'src/etc/generate-keyword-tests.py use'
+
+fn main() {
+    let use = "foo"; //~ error: expected identifier, found keyword `use`
+}
diff --git a/tests/ui/parser/keyword-use-as-identifier.stderr b/tests/ui/parser/keyword-use-as-identifier.stderr
new file mode 100644
index 000000000..630798659
--- /dev/null
+++ b/tests/ui/parser/keyword-use-as-identifier.stderr
@@ -0,0 +1,13 @@
+error: expected identifier, found keyword `use`
+  --> $DIR/keyword-use-as-identifier.rs:4:9
+   |
+LL |     let use = "foo";
+   |         ^^^ expected identifier, found keyword
+   |
+help: escape `use` to use it as an identifier
+   |
+LL |     let r#use = "foo";
+   |         ++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/keyword-where-as-identifier.rs b/tests/ui/parser/keyword-where-as-identifier.rs
new file mode 100644
index 000000000..56301bd20
--- /dev/null
+++ b/tests/ui/parser/keyword-where-as-identifier.rs
@@ -0,0 +1,5 @@
+// This file was auto-generated using 'src/etc/generate-keyword-tests.py where'
+
+fn main() {
+    let where = "foo"; //~ error: expected identifier, found keyword `where`
+}
diff --git a/tests/ui/parser/keyword-where-as-identifier.stderr b/tests/ui/parser/keyword-where-as-identifier.stderr
new file mode 100644
index 000000000..9e72f7940
--- /dev/null
+++ b/tests/ui/parser/keyword-where-as-identifier.stderr
@@ -0,0 +1,13 @@
+error: expected identifier, found keyword `where`
+  --> $DIR/keyword-where-as-identifier.rs:4:9
+   |
+LL |     let where = "foo";
+   |         ^^^^^ expected identifier, found keyword
+   |
+help: escape `where` to use it as an identifier
+   |
+LL |     let r#where = "foo";
+   |         ++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/keyword-while-as-identifier.rs b/tests/ui/parser/keyword-while-as-identifier.rs
new file mode 100644
index 000000000..22026d15d
--- /dev/null
+++ b/tests/ui/parser/keyword-while-as-identifier.rs
@@ -0,0 +1,5 @@
+// This file was auto-generated using 'src/etc/generate-keyword-tests.py while'
+
+fn main() {
+    let while = "foo"; //~ error: expected identifier, found keyword `while`
+}
diff --git a/tests/ui/parser/keyword-while-as-identifier.stderr b/tests/ui/parser/keyword-while-as-identifier.stderr
new file mode 100644
index 000000000..2bb62105d
--- /dev/null
+++ b/tests/ui/parser/keyword-while-as-identifier.stderr
@@ -0,0 +1,13 @@
+error: expected identifier, found keyword `while`
+  --> $DIR/keyword-while-as-identifier.rs:4:9
+   |
+LL |     let while = "foo";
+   |         ^^^^^ expected identifier, found keyword
+   |
+help: escape `while` to use it as an identifier
+   |
+LL |     let r#while = "foo";
+   |         ++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/keyword.rs b/tests/ui/parser/keyword.rs
new file mode 100644
index 000000000..1eb7886c5
--- /dev/null
+++ b/tests/ui/parser/keyword.rs
@@ -0,0 +1,5 @@
+pub mod break {
+    //~^ ERROR expected identifier, found keyword `break`
+}
+
+fn main() {}
diff --git a/tests/ui/parser/keyword.stderr b/tests/ui/parser/keyword.stderr
new file mode 100644
index 000000000..ee7d72b39
--- /dev/null
+++ b/tests/ui/parser/keyword.stderr
@@ -0,0 +1,13 @@
+error: expected identifier, found keyword `break`
+  --> $DIR/keyword.rs:1:9
+   |
+LL | pub mod break {
+   |         ^^^^^ expected identifier, found keyword
+   |
+help: escape `break` to use it as an identifier
+   |
+LL | pub mod r#break {
+   |         ++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/keywords-followed-by-double-colon.rs b/tests/ui/parser/keywords-followed-by-double-colon.rs
new file mode 100644
index 000000000..5c7049f7c
--- /dev/null
+++ b/tests/ui/parser/keywords-followed-by-double-colon.rs
@@ -0,0 +1,8 @@
+fn main() {
+    struct::foo();
+    //~^ ERROR expected identifier
+}
+fn bar() {
+    mut::baz();
+    //~^ ERROR expected expression, found keyword `mut`
+}
diff --git a/tests/ui/parser/keywords-followed-by-double-colon.stderr b/tests/ui/parser/keywords-followed-by-double-colon.stderr
new file mode 100644
index 000000000..4c4d5e5dd
--- /dev/null
+++ b/tests/ui/parser/keywords-followed-by-double-colon.stderr
@@ -0,0 +1,14 @@
+error: expected identifier, found `::`
+  --> $DIR/keywords-followed-by-double-colon.rs:2:11
+   |
+LL |     struct::foo();
+   |           ^^ expected identifier
+
+error: expected expression, found keyword `mut`
+  --> $DIR/keywords-followed-by-double-colon.rs:6:5
+   |
+LL |     mut::baz();
+   |     ^^^ expected expression
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/kw-in-trait-bounds.rs b/tests/ui/parser/kw-in-trait-bounds.rs
new file mode 100644
index 000000000..e9e85339a
--- /dev/null
+++ b/tests/ui/parser/kw-in-trait-bounds.rs
@@ -0,0 +1,39 @@
+// edition:2018
+
+fn _f<F: fn(), G>(_: impl fn(), _: &dyn fn())
+//~^ ERROR expected identifier, found keyword `fn`
+//~| ERROR expected identifier, found keyword `fn`
+//~| ERROR expected identifier, found keyword `fn`
+//~| HELP use `Fn` to refer to the trait
+//~| HELP use `Fn` to refer to the trait
+//~| HELP use `Fn` to refer to the trait
+where
+G: fn(),
+    //~^ ERROR expected identifier, found keyword `fn`
+    //~| HELP use `Fn` to refer to the trait
+{}
+
+fn _g<A: struct, B>(_: impl struct, _: &dyn struct)
+//~^ ERROR expected identifier, found keyword `struct`
+//~| ERROR expected identifier, found keyword `struct`
+//~| ERROR expected identifier, found keyword `struct`
+//~| ERROR cannot find trait `r#struct` in this scope
+//~| ERROR cannot find trait `r#struct` in this scope
+//~| ERROR cannot find trait `r#struct` in this scope
+//~| HELP  a trait with a similar name exists
+//~| HELP  a trait with a similar name exists
+//~| HELP  a trait with a similar name exists
+//~| HELP  escape `struct` to use it as an identifier
+//~| HELP  escape `struct` to use it as an identifier
+//~| HELP  escape `struct` to use it as an identifier
+where
+    B: struct,
+    //~^ ERROR expected identifier, found keyword `struct`
+    //~| ERROR cannot find trait `r#struct` in this scope
+    //~| HELP  a trait with a similar name exists
+    //~| HELP  escape `struct` to use it as an identifier
+{}
+
+trait Struct {}
+
+fn main() {}
diff --git a/tests/ui/parser/kw-in-trait-bounds.stderr b/tests/ui/parser/kw-in-trait-bounds.stderr
new file mode 100644
index 000000000..2d3aad4d6
--- /dev/null
+++ b/tests/ui/parser/kw-in-trait-bounds.stderr
@@ -0,0 +1,127 @@
+error: expected identifier, found keyword `fn`
+  --> $DIR/kw-in-trait-bounds.rs:3:10
+   |
+LL | fn _f<F: fn(), G>(_: impl fn(), _: &dyn fn())
+   |          ^^
+   |
+help: use `Fn` to refer to the trait
+   |
+LL | fn _f<F: Fn(), G>(_: impl fn(), _: &dyn fn())
+   |          ~~
+
+error: expected identifier, found keyword `fn`
+  --> $DIR/kw-in-trait-bounds.rs:3:27
+   |
+LL | fn _f<F: fn(), G>(_: impl fn(), _: &dyn fn())
+   |                           ^^
+   |
+help: use `Fn` to refer to the trait
+   |
+LL | fn _f<F: fn(), G>(_: impl Fn(), _: &dyn fn())
+   |                           ~~
+
+error: expected identifier, found keyword `fn`
+  --> $DIR/kw-in-trait-bounds.rs:3:41
+   |
+LL | fn _f<F: fn(), G>(_: impl fn(), _: &dyn fn())
+   |                                         ^^
+   |
+help: use `Fn` to refer to the trait
+   |
+LL | fn _f<F: fn(), G>(_: impl fn(), _: &dyn Fn())
+   |                                         ~~
+
+error: expected identifier, found keyword `fn`
+  --> $DIR/kw-in-trait-bounds.rs:11:4
+   |
+LL | G: fn(),
+   |    ^^
+   |
+help: use `Fn` to refer to the trait
+   |
+LL | G: Fn(),
+   |    ~~
+
+error: expected identifier, found keyword `struct`
+  --> $DIR/kw-in-trait-bounds.rs:16:10
+   |
+LL | fn _g<A: struct, B>(_: impl struct, _: &dyn struct)
+   |          ^^^^^^ expected identifier, found keyword
+   |
+help: escape `struct` to use it as an identifier
+   |
+LL | fn _g<A: r#struct, B>(_: impl struct, _: &dyn struct)
+   |          ++
+
+error: expected identifier, found keyword `struct`
+  --> $DIR/kw-in-trait-bounds.rs:16:29
+   |
+LL | fn _g<A: struct, B>(_: impl struct, _: &dyn struct)
+   |                             ^^^^^^ expected identifier, found keyword
+   |
+help: escape `struct` to use it as an identifier
+   |
+LL | fn _g<A: struct, B>(_: impl r#struct, _: &dyn struct)
+   |                             ++
+
+error: expected identifier, found keyword `struct`
+  --> $DIR/kw-in-trait-bounds.rs:16:45
+   |
+LL | fn _g<A: struct, B>(_: impl struct, _: &dyn struct)
+   |                                             ^^^^^^ expected identifier, found keyword
+   |
+help: escape `struct` to use it as an identifier
+   |
+LL | fn _g<A: struct, B>(_: impl struct, _: &dyn r#struct)
+   |                                             ++
+
+error: expected identifier, found keyword `struct`
+  --> $DIR/kw-in-trait-bounds.rs:30:8
+   |
+LL |     B: struct,
+   |        ^^^^^^ expected identifier, found keyword
+   |
+help: escape `struct` to use it as an identifier
+   |
+LL |     B: r#struct,
+   |        ++
+
+error[E0405]: cannot find trait `r#struct` in this scope
+  --> $DIR/kw-in-trait-bounds.rs:16:10
+   |
+LL | fn _g<A: struct, B>(_: impl struct, _: &dyn struct)
+   |          ^^^^^^ help: a trait with a similar name exists (notice the capitalization): `Struct`
+...
+LL | trait Struct {}
+   | ------------ similarly named trait `Struct` defined here
+
+error[E0405]: cannot find trait `r#struct` in this scope
+  --> $DIR/kw-in-trait-bounds.rs:30:8
+   |
+LL |     B: struct,
+   |        ^^^^^^ help: a trait with a similar name exists (notice the capitalization): `Struct`
+...
+LL | trait Struct {}
+   | ------------ similarly named trait `Struct` defined here
+
+error[E0405]: cannot find trait `r#struct` in this scope
+  --> $DIR/kw-in-trait-bounds.rs:16:29
+   |
+LL | fn _g<A: struct, B>(_: impl struct, _: &dyn struct)
+   |                             ^^^^^^ help: a trait with a similar name exists (notice the capitalization): `Struct`
+...
+LL | trait Struct {}
+   | ------------ similarly named trait `Struct` defined here
+
+error[E0405]: cannot find trait `r#struct` in this scope
+  --> $DIR/kw-in-trait-bounds.rs:16:45
+   |
+LL | fn _g<A: struct, B>(_: impl struct, _: &dyn struct)
+   |                                             ^^^^^^ help: a trait with a similar name exists (notice the capitalization): `Struct`
+...
+LL | trait Struct {}
+   | ------------ similarly named trait `Struct` defined here
+
+error: aborting due to 12 previous errors
+
+For more information about this error, try `rustc --explain E0405`.
diff --git a/tests/ui/parser/label-after-block-like.rs b/tests/ui/parser/label-after-block-like.rs
new file mode 100644
index 000000000..55f3f8f9f
--- /dev/null
+++ b/tests/ui/parser/label-after-block-like.rs
@@ -0,0 +1,43 @@
+fn a() {
+    if let () = () 'a {}
+    //~^ ERROR labeled expression must be followed by `:`
+    //~| ERROR expected `{`, found `'a`
+}
+
+fn b() {
+    if true 'a {}
+    //~^ ERROR labeled expression must be followed by `:`
+    //~| ERROR expected `{`, found `'a`
+}
+
+fn c() {
+    loop 'a {}
+    //~^ ERROR labeled expression must be followed by `:`
+    //~| ERROR expected `{`, found `'a`
+}
+
+fn d() {
+    while true 'a {}
+    //~^ ERROR labeled expression must be followed by `:`
+    //~| ERROR expected `{`, found `'a`
+}
+
+fn e() {
+    while let () = () 'a {}
+    //~^ ERROR labeled expression must be followed by `:`
+    //~| ERROR expected `{`, found `'a`
+}
+
+fn f() {
+    for _ in 0..0 'a {}
+    //~^ ERROR labeled expression must be followed by `:`
+    //~| ERROR expected `{`, found `'a`
+}
+
+fn g() {
+    unsafe 'a {}
+    //~^ ERROR labeled expression must be followed by `:`
+    //~| ERROR expected `{`, found `'a`
+}
+
+fn main() {}
diff --git a/tests/ui/parser/label-after-block-like.stderr b/tests/ui/parser/label-after-block-like.stderr
new file mode 100644
index 000000000..8ff50b124
--- /dev/null
+++ b/tests/ui/parser/label-after-block-like.stderr
@@ -0,0 +1,176 @@
+error: labeled expression must be followed by `:`
+  --> $DIR/label-after-block-like.rs:2:20
+   |
+LL |     if let () = () 'a {}
+   |                    ---^^
+   |                    | |
+   |                    | help: add `:` after the label
+   |                    the label
+   |
+   = note: labels are used before loops and blocks, allowing e.g., `break 'label` to them
+
+error: expected `{`, found `'a`
+  --> $DIR/label-after-block-like.rs:2:20
+   |
+LL |     if let () = () 'a {}
+   |                    ^^ expected `{`
+   |
+note: the `if` expression is missing a block after this condition
+  --> $DIR/label-after-block-like.rs:2:8
+   |
+LL |     if let () = () 'a {}
+   |        ^^^^^^^^^^^
+help: try placing this code inside a block
+   |
+LL |     if let () = () { 'a {} }
+   |                    +       +
+
+error: labeled expression must be followed by `:`
+  --> $DIR/label-after-block-like.rs:8:13
+   |
+LL |     if true 'a {}
+   |             ---^^
+   |             | |
+   |             | help: add `:` after the label
+   |             the label
+   |
+   = note: labels are used before loops and blocks, allowing e.g., `break 'label` to them
+
+error: expected `{`, found `'a`
+  --> $DIR/label-after-block-like.rs:8:13
+   |
+LL |     if true 'a {}
+   |             ^^ expected `{`
+   |
+note: the `if` expression is missing a block after this condition
+  --> $DIR/label-after-block-like.rs:8:8
+   |
+LL |     if true 'a {}
+   |        ^^^^
+help: try placing this code inside a block
+   |
+LL |     if true { 'a {} }
+   |             +       +
+
+error: labeled expression must be followed by `:`
+  --> $DIR/label-after-block-like.rs:14:10
+   |
+LL |     loop 'a {}
+   |          ---^^
+   |          | |
+   |          | help: add `:` after the label
+   |          the label
+   |
+   = note: labels are used before loops and blocks, allowing e.g., `break 'label` to them
+
+error: expected `{`, found `'a`
+  --> $DIR/label-after-block-like.rs:14:10
+   |
+LL |     loop 'a {}
+   |     ---- ^^ expected `{`
+   |     |
+   |     while parsing this `loop` expression
+   |
+help: try placing this code inside a block
+   |
+LL |     loop { 'a {} }
+   |          +       +
+
+error: labeled expression must be followed by `:`
+  --> $DIR/label-after-block-like.rs:20:16
+   |
+LL |     while true 'a {}
+   |                ---^^
+   |                | |
+   |                | help: add `:` after the label
+   |                the label
+   |
+   = note: labels are used before loops and blocks, allowing e.g., `break 'label` to them
+
+error: expected `{`, found `'a`
+  --> $DIR/label-after-block-like.rs:20:16
+   |
+LL |     while true 'a {}
+   |     ----- ---- ^^ expected `{`
+   |     |     |
+   |     |     this `while` condition successfully parsed
+   |     while parsing the body of this `while` expression
+   |
+help: try placing this code inside a block
+   |
+LL |     while true { 'a {} }
+   |                +       +
+
+error: labeled expression must be followed by `:`
+  --> $DIR/label-after-block-like.rs:26:23
+   |
+LL |     while let () = () 'a {}
+   |                       ---^^
+   |                       | |
+   |                       | help: add `:` after the label
+   |                       the label
+   |
+   = note: labels are used before loops and blocks, allowing e.g., `break 'label` to them
+
+error: expected `{`, found `'a`
+  --> $DIR/label-after-block-like.rs:26:23
+   |
+LL |     while let () = () 'a {}
+   |     ----- ----------- ^^ expected `{`
+   |     |     |
+   |     |     this `while` condition successfully parsed
+   |     while parsing the body of this `while` expression
+   |
+help: try placing this code inside a block
+   |
+LL |     while let () = () { 'a {} }
+   |                       +       +
+
+error: labeled expression must be followed by `:`
+  --> $DIR/label-after-block-like.rs:32:19
+   |
+LL |     for _ in 0..0 'a {}
+   |                   ---^^
+   |                   | |
+   |                   | help: add `:` after the label
+   |                   the label
+   |
+   = note: labels are used before loops and blocks, allowing e.g., `break 'label` to them
+
+error: expected `{`, found `'a`
+  --> $DIR/label-after-block-like.rs:32:19
+   |
+LL |     for _ in 0..0 'a {}
+   |                   ^^ expected `{`
+   |
+help: try placing this code inside a block
+   |
+LL |     for _ in 0..0 { 'a {} }
+   |                   +       +
+
+error: labeled expression must be followed by `:`
+  --> $DIR/label-after-block-like.rs:38:12
+   |
+LL |     unsafe 'a {}
+   |            ---^^
+   |            | |
+   |            | help: add `:` after the label
+   |            the label
+   |
+   = note: labels are used before loops and blocks, allowing e.g., `break 'label` to them
+
+error: expected `{`, found `'a`
+  --> $DIR/label-after-block-like.rs:38:12
+   |
+LL |     unsafe 'a {}
+   |     ------ ^^ expected `{`
+   |     |
+   |     while parsing this `unsafe` expression
+   |
+help: try placing this code inside a block
+   |
+LL |     unsafe { 'a {} }
+   |            +       +
+
+error: aborting due to 14 previous errors
+
diff --git a/tests/ui/parser/label-is-actually-char.rs b/tests/ui/parser/label-is-actually-char.rs
new file mode 100644
index 000000000..183da603d
--- /dev/null
+++ b/tests/ui/parser/label-is-actually-char.rs
@@ -0,0 +1,16 @@
+fn main() {
+    let c = 'a;
+    //~^ ERROR expected `while`, `for`, `loop` or `{` after a label
+    //~| HELP add `'` to close the char literal
+    match c {
+        'a'..='b => {}
+        //~^ ERROR unexpected token: `'b`
+        //~| HELP add `'` to close the char literal
+        _ => {}
+    }
+    let x = ['a, 'b];
+    //~^ ERROR expected `while`, `for`, `loop` or `{` after a label
+    //~| ERROR expected `while`, `for`, `loop` or `{` after a label
+    //~| HELP add `'` to close the char literal
+    //~| HELP add `'` to close the char literal
+}
diff --git a/tests/ui/parser/label-is-actually-char.stderr b/tests/ui/parser/label-is-actually-char.stderr
new file mode 100644
index 000000000..28c8d2ada
--- /dev/null
+++ b/tests/ui/parser/label-is-actually-char.stderr
@@ -0,0 +1,46 @@
+error: expected `while`, `for`, `loop` or `{` after a label
+  --> $DIR/label-is-actually-char.rs:2:15
+   |
+LL |     let c = 'a;
+   |               ^ expected `while`, `for`, `loop` or `{` after a label
+   |
+help: add `'` to close the char literal
+   |
+LL |     let c = 'a';
+   |               +
+
+error: unexpected token: `'b`
+  --> $DIR/label-is-actually-char.rs:6:15
+   |
+LL |         'a'..='b => {}
+   |               ^^
+   |
+help: add `'` to close the char literal
+   |
+LL |         'a'..='b' => {}
+   |                 +
+
+error: expected `while`, `for`, `loop` or `{` after a label
+  --> $DIR/label-is-actually-char.rs:11:16
+   |
+LL |     let x = ['a, 'b];
+   |                ^ expected `while`, `for`, `loop` or `{` after a label
+   |
+help: add `'` to close the char literal
+   |
+LL |     let x = ['a', 'b];
+   |                +
+
+error: expected `while`, `for`, `loop` or `{` after a label
+  --> $DIR/label-is-actually-char.rs:11:20
+   |
+LL |     let x = ['a, 'b];
+   |                    ^ expected `while`, `for`, `loop` or `{` after a label
+   |
+help: add `'` to close the char literal
+   |
+LL |     let x = ['a, 'b'];
+   |                    +
+
+error: aborting due to 4 previous errors
+
diff --git a/tests/ui/parser/labeled-no-colon-expr.rs b/tests/ui/parser/labeled-no-colon-expr.rs
new file mode 100644
index 000000000..d9ebd7473
--- /dev/null
+++ b/tests/ui/parser/labeled-no-colon-expr.rs
@@ -0,0 +1,15 @@
+fn main() {
+    'l0 while false {} //~ ERROR labeled expression must be followed by `:`
+    'l1 for _ in 0..1 {} //~ ERROR labeled expression must be followed by `:`
+    'l2 loop {} //~ ERROR labeled expression must be followed by `:`
+    'l3 {} //~ ERROR labeled expression must be followed by `:`
+    'l4 0; //~ ERROR labeled expression must be followed by `:`
+    //~^ ERROR expected `while`, `for`, `loop` or `{`
+
+    macro_rules! m {
+        ($b:block) => {
+            'l5 $b; //~ ERROR cannot use a `block` macro fragment here
+        }
+    }
+    m!({}); //~ ERROR labeled expression must be followed by `:`
+}
diff --git a/tests/ui/parser/labeled-no-colon-expr.stderr b/tests/ui/parser/labeled-no-colon-expr.stderr
new file mode 100644
index 000000000..62288fe15
--- /dev/null
+++ b/tests/ui/parser/labeled-no-colon-expr.stderr
@@ -0,0 +1,95 @@
+error: labeled expression must be followed by `:`
+  --> $DIR/labeled-no-colon-expr.rs:2:5
+   |
+LL |     'l0 while false {}
+   |     ----^^^^^^^^^^^^^^
+   |     |  |
+   |     |  help: add `:` after the label
+   |     the label
+   |
+   = note: labels are used before loops and blocks, allowing e.g., `break 'label` to them
+
+error: labeled expression must be followed by `:`
+  --> $DIR/labeled-no-colon-expr.rs:3:5
+   |
+LL |     'l1 for _ in 0..1 {}
+   |     ----^^^^^^^^^^^^^^^^
+   |     |  |
+   |     |  help: add `:` after the label
+   |     the label
+   |
+   = note: labels are used before loops and blocks, allowing e.g., `break 'label` to them
+
+error: labeled expression must be followed by `:`
+  --> $DIR/labeled-no-colon-expr.rs:4:5
+   |
+LL |     'l2 loop {}
+   |     ----^^^^^^^
+   |     |  |
+   |     |  help: add `:` after the label
+   |     the label
+   |
+   = note: labels are used before loops and blocks, allowing e.g., `break 'label` to them
+
+error: labeled expression must be followed by `:`
+  --> $DIR/labeled-no-colon-expr.rs:5:5
+   |
+LL |     'l3 {}
+   |     ----^^
+   |     |  |
+   |     |  help: add `:` after the label
+   |     the label
+   |
+   = note: labels are used before loops and blocks, allowing e.g., `break 'label` to them
+
+error: expected `while`, `for`, `loop` or `{` after a label
+  --> $DIR/labeled-no-colon-expr.rs:6:9
+   |
+LL |     'l4 0;
+   |         ^ expected `while`, `for`, `loop` or `{` after a label
+   |
+help: consider removing the label
+   |
+LL -     'l4 0;
+LL +     0;
+   |
+
+error: labeled expression must be followed by `:`
+  --> $DIR/labeled-no-colon-expr.rs:6:9
+   |
+LL |     'l4 0;
+   |     ----^
+   |     |  |
+   |     |  help: add `:` after the label
+   |     the label
+   |
+   = note: labels are used before loops and blocks, allowing e.g., `break 'label` to them
+
+error: cannot use a `block` macro fragment here
+  --> $DIR/labeled-no-colon-expr.rs:11:17
+   |
+LL |             'l5 $b;
+   |             ----^^
+   |             |
+   |             the `block` fragment is within this context
+...
+LL |     m!({});
+   |     ------ in this macro invocation
+   |
+   = note: this error originates in the macro `m` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: labeled expression must be followed by `:`
+  --> $DIR/labeled-no-colon-expr.rs:14:8
+   |
+LL |             'l5 $b;
+   |             ---- help: add `:` after the label
+   |             |
+   |             the label
+...
+LL |     m!({});
+   |        ^^
+   |
+   = note: labels are used before loops and blocks, allowing e.g., `break 'label` to them
+
+error: aborting due to 8 previous errors
+
diff --git a/tests/ui/parser/let-binop.fixed b/tests/ui/parser/let-binop.fixed
new file mode 100644
index 000000000..93f7f97b0
--- /dev/null
+++ b/tests/ui/parser/let-binop.fixed
@@ -0,0 +1,10 @@
+// run-rustfix
+
+fn main() {
+    let a: i8 = 1; //~ ERROR can't reassign to an uninitialized variable
+    let _ = a;
+    let b = 1; //~ ERROR can't reassign to an uninitialized variable
+    let _ = b;
+    let c = 1; //~ ERROR can't reassign to an uninitialized variable
+    let _ = c;
+}
diff --git a/tests/ui/parser/let-binop.rs b/tests/ui/parser/let-binop.rs
new file mode 100644
index 000000000..2adbceae5
--- /dev/null
+++ b/tests/ui/parser/let-binop.rs
@@ -0,0 +1,10 @@
+// run-rustfix
+
+fn main() {
+    let a: i8 *= 1; //~ ERROR can't reassign to an uninitialized variable
+    let _ = a;
+    let b += 1; //~ ERROR can't reassign to an uninitialized variable
+    let _ = b;
+    let c *= 1; //~ ERROR can't reassign to an uninitialized variable
+    let _ = c;
+}
diff --git a/tests/ui/parser/let-binop.stderr b/tests/ui/parser/let-binop.stderr
new file mode 100644
index 000000000..dd33e9157
--- /dev/null
+++ b/tests/ui/parser/let-binop.stderr
@@ -0,0 +1,26 @@
+error: can't reassign to an uninitialized variable
+  --> $DIR/let-binop.rs:4:15
+   |
+LL |     let a: i8 *= 1;
+   |               ^^ help: initialize the variable
+   |
+   = help: if you meant to overwrite, remove the `let` binding
+
+error: can't reassign to an uninitialized variable
+  --> $DIR/let-binop.rs:6:11
+   |
+LL |     let b += 1;
+   |           ^^ help: initialize the variable
+   |
+   = help: if you meant to overwrite, remove the `let` binding
+
+error: can't reassign to an uninitialized variable
+  --> $DIR/let-binop.rs:8:11
+   |
+LL |     let c *= 1;
+   |           ^^ help: initialize the variable
+   |
+   = help: if you meant to overwrite, remove the `let` binding
+
+error: aborting due to 3 previous errors
+
diff --git a/tests/ui/parser/lifetime-in-pattern-recover.rs b/tests/ui/parser/lifetime-in-pattern-recover.rs
new file mode 100644
index 000000000..7fb14b800
--- /dev/null
+++ b/tests/ui/parser/lifetime-in-pattern-recover.rs
@@ -0,0 +1,6 @@
+fn main() {
+    let &'a x = &0; //~ ERROR unexpected lifetime `'a` in pattern
+    let &'a mut y = &mut 0; //~ ERROR unexpected lifetime `'a` in pattern
+
+    let _recovery_witness: () = 0; //~ ERROR mismatched types
+}
diff --git a/tests/ui/parser/lifetime-in-pattern-recover.stderr b/tests/ui/parser/lifetime-in-pattern-recover.stderr
new file mode 100644
index 000000000..4bf7f57bf
--- /dev/null
+++ b/tests/ui/parser/lifetime-in-pattern-recover.stderr
@@ -0,0 +1,23 @@
+error: unexpected lifetime `'a` in pattern
+  --> $DIR/lifetime-in-pattern-recover.rs:2:10
+   |
+LL |     let &'a x = &0;
+   |          ^^ help: remove the lifetime
+
+error: unexpected lifetime `'a` in pattern
+  --> $DIR/lifetime-in-pattern-recover.rs:3:10
+   |
+LL |     let &'a mut y = &mut 0;
+   |          ^^ help: remove the lifetime
+
+error[E0308]: mismatched types
+  --> $DIR/lifetime-in-pattern-recover.rs:5:33
+   |
+LL |     let _recovery_witness: () = 0;
+   |                            --   ^ expected `()`, found integer
+   |                            |
+   |                            expected due to this
+
+error: aborting due to 3 previous errors
+
+For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/parser/lifetime-in-pattern.rs b/tests/ui/parser/lifetime-in-pattern.rs
new file mode 100644
index 000000000..d3c638d0c
--- /dev/null
+++ b/tests/ui/parser/lifetime-in-pattern.rs
@@ -0,0 +1,7 @@
+fn test(&'a str) {
+    //~^ ERROR unexpected lifetime `'a` in pattern
+    //~| ERROR expected one of `:`, `@`, or `|`, found `)`
+}
+
+fn main() {
+}
diff --git a/tests/ui/parser/lifetime-in-pattern.stderr b/tests/ui/parser/lifetime-in-pattern.stderr
new file mode 100644
index 000000000..a1d721e74
--- /dev/null
+++ b/tests/ui/parser/lifetime-in-pattern.stderr
@@ -0,0 +1,28 @@
+error: unexpected lifetime `'a` in pattern
+  --> $DIR/lifetime-in-pattern.rs:1:10
+   |
+LL | fn test(&'a str) {
+   |          ^^ help: remove the lifetime
+
+error: expected one of `:`, `@`, or `|`, found `)`
+  --> $DIR/lifetime-in-pattern.rs:1:16
+   |
+LL | fn test(&'a str) {
+   |                ^ expected one of `:`, `@`, or `|`
+   |
+   = note: anonymous parameters are removed in the 2018 edition (see RFC 1685)
+help: if this is a `self` type, give it a parameter name
+   |
+LL | fn test(self: &'a str) {
+   |         +++++
+help: if this is a parameter name, give it a type
+   |
+LL | fn test(str: &TypeName) {
+   |         ~~~~~~~~~~~~~~
+help: if this is a type, explicitly ignore the parameter name
+   |
+LL | fn test(_: &'a str) {
+   |         ++
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/lifetime-semicolon.fixed b/tests/ui/parser/lifetime-semicolon.fixed
new file mode 100644
index 000000000..482b77046
--- /dev/null
+++ b/tests/ui/parser/lifetime-semicolon.fixed
@@ -0,0 +1,10 @@
+// run-rustfix
+#![allow(unused)]
+struct Foo<'a, 'b> {
+    a: &'a &'b i32
+}
+
+fn foo<'a, 'b>(_x: &mut Foo<'a, 'b>) {}
+//~^ ERROR expected one of `,` or `>`, found `;`
+
+fn main() {}
diff --git a/tests/ui/parser/lifetime-semicolon.rs b/tests/ui/parser/lifetime-semicolon.rs
new file mode 100644
index 000000000..21c8b0a7f
--- /dev/null
+++ b/tests/ui/parser/lifetime-semicolon.rs
@@ -0,0 +1,10 @@
+// run-rustfix
+#![allow(unused)]
+struct Foo<'a, 'b> {
+    a: &'a &'b i32
+}
+
+fn foo<'a, 'b>(_x: &mut Foo<'a; 'b>) {}
+//~^ ERROR expected one of `,` or `>`, found `;`
+
+fn main() {}
diff --git a/tests/ui/parser/lifetime-semicolon.stderr b/tests/ui/parser/lifetime-semicolon.stderr
new file mode 100644
index 000000000..ee486c236
--- /dev/null
+++ b/tests/ui/parser/lifetime-semicolon.stderr
@@ -0,0 +1,13 @@
+error: expected one of `,` or `>`, found `;`
+  --> $DIR/lifetime-semicolon.rs:7:31
+   |
+LL | fn foo<'a, 'b>(_x: &mut Foo<'a; 'b>) {}
+   |                               ^ expected one of `,` or `>`
+   |
+help: use a comma to separate type parameters
+   |
+LL | fn foo<'a, 'b>(_x: &mut Foo<'a, 'b>) {}
+   |                               ~
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/lifetime_starts_expressions.rs b/tests/ui/parser/lifetime_starts_expressions.rs
new file mode 100644
index 000000000..903b4de6e
--- /dev/null
+++ b/tests/ui/parser/lifetime_starts_expressions.rs
@@ -0,0 +1,39 @@
+#![allow(unused, dead_code)]
+
+fn foo() -> u32 {
+    return 'label: loop { break 'label 42; };
+}
+
+fn bar() -> u32 {
+    loop { break 'label: loop { break 'label 42; }; }
+    //~^ ERROR: parentheses are required around this expression to avoid confusion
+    //~| HELP: wrap the expression in parentheses
+}
+
+fn baz() -> u32 {
+    'label: loop {
+        break 'label
+        //~^ WARNING: this labeled break expression is easy to confuse with an unlabeled break
+            loop { break 42; };
+            //~^ HELP: wrap this expression in parentheses
+    };
+
+    'label2: loop {
+        break 'label2 'inner: loop { break 42; };
+        // no warnings or errors here
+    }
+}
+
+pub fn main() {
+    // Regression test for issue #86948, as resolved in #87026:
+    let a = 'first_loop: loop {
+        break 'first_loop 1;
+    };
+    let b = loop {
+        break 'inner_loop: loop {
+        //~^ ERROR: parentheses are required around this expression to avoid confusion
+        //~| HELP: wrap the expression in parentheses
+            break 'inner_loop 1;
+        };
+    };
+}
diff --git a/tests/ui/parser/lifetime_starts_expressions.stderr b/tests/ui/parser/lifetime_starts_expressions.stderr
new file mode 100644
index 000000000..82e274325
--- /dev/null
+++ b/tests/ui/parser/lifetime_starts_expressions.stderr
@@ -0,0 +1,47 @@
+error: parentheses are required around this expression to avoid confusion with a labeled break expression
+  --> $DIR/lifetime_starts_expressions.rs:8:18
+   |
+LL |     loop { break 'label: loop { break 'label 42; }; }
+   |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+help: wrap the expression in parentheses
+   |
+LL |     loop { break ('label: loop { break 'label 42; }); }
+   |                  +                                 +
+
+error: parentheses are required around this expression to avoid confusion with a labeled break expression
+  --> $DIR/lifetime_starts_expressions.rs:33:15
+   |
+LL |           break 'inner_loop: loop {
+   |  _______________^
+LL | |
+LL | |
+LL | |             break 'inner_loop 1;
+LL | |         };
+   | |_________^
+   |
+help: wrap the expression in parentheses
+   |
+LL ~         break ('inner_loop: loop {
+LL |
+LL |
+LL |             break 'inner_loop 1;
+LL ~         });
+   |
+
+warning: this labeled break expression is easy to confuse with an unlabeled break with a labeled value expression
+  --> $DIR/lifetime_starts_expressions.rs:15:9
+   |
+LL | /         break 'label
+LL | |
+LL | |             loop { break 42; };
+   | |______________________________^
+   |
+   = note: `#[warn(break_with_label_and_loop)]` on by default
+help: wrap this expression in parentheses
+   |
+LL |             (loop { break 42; });
+   |             +                  +
+
+error: aborting due to 2 previous errors; 1 warning emitted
+
diff --git a/tests/ui/parser/macro-bad-delimiter-ident.rs b/tests/ui/parser/macro-bad-delimiter-ident.rs
new file mode 100644
index 000000000..f461f06b4
--- /dev/null
+++ b/tests/ui/parser/macro-bad-delimiter-ident.rs
@@ -0,0 +1,3 @@
+fn main() {
+    foo! bar < //~ ERROR expected one of `(`, `[`, or `{`, found `bar`
+}
diff --git a/tests/ui/parser/macro-bad-delimiter-ident.stderr b/tests/ui/parser/macro-bad-delimiter-ident.stderr
new file mode 100644
index 000000000..f2365fed2
--- /dev/null
+++ b/tests/ui/parser/macro-bad-delimiter-ident.stderr
@@ -0,0 +1,8 @@
+error: expected one of `(`, `[`, or `{`, found `bar`
+  --> $DIR/macro-bad-delimiter-ident.rs:2:10
+   |
+LL |     foo! bar <
+   |          ^^^ expected one of `(`, `[`, or `{`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/macro-braces-dot-question.rs b/tests/ui/parser/macro-braces-dot-question.rs
new file mode 100644
index 000000000..016b434a6
--- /dev/null
+++ b/tests/ui/parser/macro-braces-dot-question.rs
@@ -0,0 +1,11 @@
+// check-pass
+
+use std::io::Write;
+
+fn main() -> Result<(), std::io::Error> {
+    vec! { 1, 2, 3 }.len();
+    write! { vec![], "" }?;
+    println!{""}
+    [0]; // separate statement, not indexing into the result of println.
+    Ok(())
+}
diff --git a/tests/ui/parser/macro-keyword.rs b/tests/ui/parser/macro-keyword.rs
new file mode 100644
index 000000000..58489fb2c
--- /dev/null
+++ b/tests/ui/parser/macro-keyword.rs
@@ -0,0 +1,5 @@
+fn macro() {  //~ ERROR expected identifier, found reserved keyword `macro`
+}
+
+pub fn main() {
+}
diff --git a/tests/ui/parser/macro-keyword.stderr b/tests/ui/parser/macro-keyword.stderr
new file mode 100644
index 000000000..d794671f8
--- /dev/null
+++ b/tests/ui/parser/macro-keyword.stderr
@@ -0,0 +1,13 @@
+error: expected identifier, found reserved keyword `macro`
+  --> $DIR/macro-keyword.rs:1:4
+   |
+LL | fn macro() {
+   |    ^^^^^ expected identifier, found reserved keyword
+   |
+help: escape `macro` to use it as an identifier
+   |
+LL | fn r#macro() {
+   |    ++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/macro-mismatched-delim-brace-paren.rs b/tests/ui/parser/macro-mismatched-delim-brace-paren.rs
new file mode 100644
index 000000000..404aa7b80
--- /dev/null
+++ b/tests/ui/parser/macro-mismatched-delim-brace-paren.rs
@@ -0,0 +1,7 @@
+macro_rules! foo { ($($tt:tt)*) => () }
+
+fn main() {
+    foo! {
+        bar, "baz", 1, 2.0
+    ) //~ ERROR mismatched closing delimiter
+}
diff --git a/tests/ui/parser/macro-mismatched-delim-brace-paren.stderr b/tests/ui/parser/macro-mismatched-delim-brace-paren.stderr
new file mode 100644
index 000000000..077d31800
--- /dev/null
+++ b/tests/ui/parser/macro-mismatched-delim-brace-paren.stderr
@@ -0,0 +1,11 @@
+error: mismatched closing delimiter: `)`
+  --> $DIR/macro-mismatched-delim-brace-paren.rs:4:10
+   |
+LL |     foo! {
+   |          ^ unclosed delimiter
+LL |         bar, "baz", 1, 2.0
+LL |     )
+   |     ^ mismatched closing delimiter
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/macro-mismatched-delim-paren-brace.rs b/tests/ui/parser/macro-mismatched-delim-paren-brace.rs
new file mode 100644
index 000000000..1a1b9edfb
--- /dev/null
+++ b/tests/ui/parser/macro-mismatched-delim-paren-brace.rs
@@ -0,0 +1,5 @@
+fn main() {
+    foo! (
+        bar, "baz", 1, 2.0
+    } //~ ERROR mismatched closing delimiter
+} //~ ERROR unexpected closing delimiter: `}`
diff --git a/tests/ui/parser/macro-mismatched-delim-paren-brace.stderr b/tests/ui/parser/macro-mismatched-delim-paren-brace.stderr
new file mode 100644
index 000000000..967a3e6fd
--- /dev/null
+++ b/tests/ui/parser/macro-mismatched-delim-paren-brace.stderr
@@ -0,0 +1,22 @@
+error: unexpected closing delimiter: `}`
+  --> $DIR/macro-mismatched-delim-paren-brace.rs:5:1
+   |
+LL | fn main() {
+   |           - this opening brace...
+...
+LL |     }
+   |     - ...matches this closing brace
+LL | }
+   | ^ unexpected closing delimiter
+
+error: mismatched closing delimiter: `}`
+  --> $DIR/macro-mismatched-delim-paren-brace.rs:2:10
+   |
+LL |     foo! (
+   |          ^ unclosed delimiter
+LL |         bar, "baz", 1, 2.0
+LL |     }
+   |     ^ mismatched closing delimiter
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/macro/bad-macro-argument.rs b/tests/ui/parser/macro/bad-macro-argument.rs
new file mode 100644
index 000000000..4b6d23890
--- /dev/null
+++ b/tests/ui/parser/macro/bad-macro-argument.rs
@@ -0,0 +1,4 @@
+fn main() {
+    let message = "world";
+    println!("Hello, {}", message/); //~ ERROR expected expression
+}
diff --git a/tests/ui/parser/macro/bad-macro-argument.stderr b/tests/ui/parser/macro/bad-macro-argument.stderr
new file mode 100644
index 000000000..3cd8accb6
--- /dev/null
+++ b/tests/ui/parser/macro/bad-macro-argument.stderr
@@ -0,0 +1,8 @@
+error: expected expression, found end of macro arguments
+  --> $DIR/bad-macro-argument.rs:3:35
+   |
+LL |     println!("Hello, {}", message/);
+   |                                   ^ expected expression
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/macro/issue-33569.rs b/tests/ui/parser/macro/issue-33569.rs
new file mode 100644
index 000000000..069d181e9
--- /dev/null
+++ b/tests/ui/parser/macro/issue-33569.rs
@@ -0,0 +1,12 @@
+macro_rules! foo {
+    { $+ } => { //~ ERROR expected identifier, found `+`
+                //~^ ERROR missing fragment specifier
+                //~| ERROR missing fragment specifier
+                //~| WARN this was previously accepted
+        $(x)(y) //~ ERROR expected one of: `*`, `+`, or `?`
+    }
+}
+
+foo!();
+
+fn main() {}
diff --git a/tests/ui/parser/macro/issue-33569.stderr b/tests/ui/parser/macro/issue-33569.stderr
new file mode 100644
index 000000000..0dca090fb
--- /dev/null
+++ b/tests/ui/parser/macro/issue-33569.stderr
@@ -0,0 +1,30 @@
+error: expected identifier, found `+`
+  --> $DIR/issue-33569.rs:2:8
+   |
+LL |     { $+ } => {
+   |        ^
+
+error: expected one of: `*`, `+`, or `?`
+  --> $DIR/issue-33569.rs:6:13
+   |
+LL |         $(x)(y)
+   |             ^^^
+
+error: missing fragment specifier
+  --> $DIR/issue-33569.rs:2:8
+   |
+LL |     { $+ } => {
+   |        ^
+
+error: missing fragment specifier
+  --> $DIR/issue-33569.rs:2:8
+   |
+LL |     { $+ } => {
+   |        ^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = note: for more information, see issue #40107 <https://github.com/rust-lang/rust/issues/40107>
+   = note: `#[deny(missing_fragment_specifier)]` on by default
+
+error: aborting due to 4 previous errors
+
diff --git a/tests/ui/parser/macro/issue-37113.rs b/tests/ui/parser/macro/issue-37113.rs
new file mode 100644
index 000000000..0044aa561
--- /dev/null
+++ b/tests/ui/parser/macro/issue-37113.rs
@@ -0,0 +1,11 @@
+macro_rules! test_macro {
+    ( $( $t:ty ),* $(),*) => {
+        enum SomeEnum {
+            $( $t, )* //~ ERROR expected identifier, found `String`
+        };
+    };
+}
+
+fn main() {
+    test_macro!(String,);
+}
diff --git a/tests/ui/parser/macro/issue-37113.stderr b/tests/ui/parser/macro/issue-37113.stderr
new file mode 100644
index 000000000..da9e743a0
--- /dev/null
+++ b/tests/ui/parser/macro/issue-37113.stderr
@@ -0,0 +1,16 @@
+error: expected identifier, found `String`
+  --> $DIR/issue-37113.rs:4:16
+   |
+LL |         enum SomeEnum {
+   |              -------- while parsing this enum
+LL |             $( $t, )*
+   |                ^^ expected identifier
+...
+LL |     test_macro!(String,);
+   |     -------------------- in this macro invocation
+   |
+   = help: enum variants can be `Variant`, `Variant = <integer>`, `Variant(Type, ..., TypeN)` or `Variant { fields: Types }`
+   = note: this error originates in the macro `test_macro` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/macro/issue-37234.rs b/tests/ui/parser/macro/issue-37234.rs
new file mode 100644
index 000000000..4debc7479
--- /dev/null
+++ b/tests/ui/parser/macro/issue-37234.rs
@@ -0,0 +1,9 @@
+macro_rules! failed {
+    () => {{
+        let x = 5 ""; //~ ERROR found `""`
+    }}
+}
+
+fn main() {
+    failed!();
+}
diff --git a/tests/ui/parser/macro/issue-37234.stderr b/tests/ui/parser/macro/issue-37234.stderr
new file mode 100644
index 000000000..d79196204
--- /dev/null
+++ b/tests/ui/parser/macro/issue-37234.stderr
@@ -0,0 +1,13 @@
+error: expected one of `.`, `;`, `?`, `else`, or an operator, found `""`
+  --> $DIR/issue-37234.rs:3:19
+   |
+LL |         let x = 5 "";
+   |                   ^^ expected one of `.`, `;`, `?`, `else`, or an operator
+...
+LL |     failed!();
+   |     --------- in this macro invocation
+   |
+   = note: this error originates in the macro `failed` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/macro/literals-are-validated-before-expansion.rs b/tests/ui/parser/macro/literals-are-validated-before-expansion.rs
new file mode 100644
index 000000000..c3fc754b5
--- /dev/null
+++ b/tests/ui/parser/macro/literals-are-validated-before-expansion.rs
@@ -0,0 +1,10 @@
+macro_rules! black_hole {
+    ($($tt:tt)*) => {}
+}
+
+fn main() {
+    black_hole! { '\u{FFFFFF}' }
+    //~^ ERROR: invalid unicode character escape
+    black_hole! { "this is surrogate: \u{DAAA}" }
+    //~^ ERROR: invalid unicode character escape
+}
diff --git a/tests/ui/parser/macro/literals-are-validated-before-expansion.stderr b/tests/ui/parser/macro/literals-are-validated-before-expansion.stderr
new file mode 100644
index 000000000..e874f6249
--- /dev/null
+++ b/tests/ui/parser/macro/literals-are-validated-before-expansion.stderr
@@ -0,0 +1,18 @@
+error: invalid unicode character escape
+  --> $DIR/literals-are-validated-before-expansion.rs:6:20
+   |
+LL |     black_hole! { '\u{FFFFFF}' }
+   |                    ^^^^^^^^^^ invalid escape
+   |
+   = help: unicode escape must be at most 10FFFF
+
+error: invalid unicode character escape
+  --> $DIR/literals-are-validated-before-expansion.rs:8:39
+   |
+LL |     black_hole! { "this is surrogate: \u{DAAA}" }
+   |                                       ^^^^^^^^ invalid escape
+   |
+   = help: unicode escape must not be a surrogate
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/macro/macro-doc-comments-1.rs b/tests/ui/parser/macro/macro-doc-comments-1.rs
new file mode 100644
index 000000000..8d8103bb1
--- /dev/null
+++ b/tests/ui/parser/macro/macro-doc-comments-1.rs
@@ -0,0 +1,9 @@
+macro_rules! outer {
+    (#[$outer:meta]) => ()
+}
+
+outer! {
+    //! Inner
+} //~^ ERROR no rules expected the token `!`
+
+fn main() { }
diff --git a/tests/ui/parser/macro/macro-doc-comments-1.stderr b/tests/ui/parser/macro/macro-doc-comments-1.stderr
new file mode 100644
index 000000000..eaeb62d2c
--- /dev/null
+++ b/tests/ui/parser/macro/macro-doc-comments-1.stderr
@@ -0,0 +1,20 @@
+error: no rules expected the token `!`
+  --> $DIR/macro-doc-comments-1.rs:6:5
+   |
+LL | macro_rules! outer {
+   | ------------------ when calling this macro
+...
+LL |     //! Inner
+   |     ^^^^^^^^^
+   |     |
+   |     no rules expected this token in macro call
+   |     inner doc comments expand to `#![doc = "..."]`, which is what this macro attempted to match
+   |
+note: while trying to match `[`
+  --> $DIR/macro-doc-comments-1.rs:2:7
+   |
+LL |     (#[$outer:meta]) => ()
+   |       ^
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/macro/macro-doc-comments-2.rs b/tests/ui/parser/macro/macro-doc-comments-2.rs
new file mode 100644
index 000000000..8f33720ae
--- /dev/null
+++ b/tests/ui/parser/macro/macro-doc-comments-2.rs
@@ -0,0 +1,9 @@
+macro_rules! inner {
+    (#![$inner:meta]) => ()
+}
+
+inner! {
+    /// Outer
+} //~^ ERROR no rules expected the token `[`
+
+fn main() { }
diff --git a/tests/ui/parser/macro/macro-doc-comments-2.stderr b/tests/ui/parser/macro/macro-doc-comments-2.stderr
new file mode 100644
index 000000000..1dcd95f6f
--- /dev/null
+++ b/tests/ui/parser/macro/macro-doc-comments-2.stderr
@@ -0,0 +1,20 @@
+error: no rules expected the token `[`
+  --> $DIR/macro-doc-comments-2.rs:6:5
+   |
+LL | macro_rules! inner {
+   | ------------------ when calling this macro
+...
+LL |     /// Outer
+   |     ^^^^^^^^^
+   |     |
+   |     no rules expected this token in macro call
+   |     outer doc comments expand to `#[doc = "..."]`, which is what this macro attempted to match
+   |
+note: while trying to match `!`
+  --> $DIR/macro-doc-comments-2.rs:2:7
+   |
+LL |     (#![$inner:meta]) => ()
+   |       ^
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/macro/macro-incomplete-parse.rs b/tests/ui/parser/macro/macro-incomplete-parse.rs
new file mode 100644
index 000000000..544e4aa7b
--- /dev/null
+++ b/tests/ui/parser/macro/macro-incomplete-parse.rs
@@ -0,0 +1,27 @@
+macro_rules! ignored_item {
+    () => {
+        fn foo() {}
+        fn bar() {}
+        , //~ ERROR macro expansion ignores token `,`
+    }
+}
+
+macro_rules! ignored_expr {
+    () => ( 1,  //~ ERROR expected one of `.`, `;`, `?`, `}`, or an operator, found `,`
+
+            2 )
+}
+
+macro_rules! ignored_pat {
+    () => ( 1, 2 ) //~ ERROR macro expansion ignores token `,`
+}
+
+ignored_item!();
+
+fn main() {
+    ignored_expr!();
+    match 1 {
+        ignored_pat!() => (),
+        _ => (),
+    }
+}
diff --git a/tests/ui/parser/macro/macro-incomplete-parse.stderr b/tests/ui/parser/macro/macro-incomplete-parse.stderr
new file mode 100644
index 000000000..707417b72
--- /dev/null
+++ b/tests/ui/parser/macro/macro-incomplete-parse.stderr
@@ -0,0 +1,35 @@
+error: macro expansion ignores token `,` and any following
+  --> $DIR/macro-incomplete-parse.rs:5:9
+   |
+LL |         ,
+   |         ^
+...
+LL | ignored_item!();
+   | --------------- caused by the macro expansion here
+   |
+   = note: the usage of `ignored_item!` is likely invalid in item context
+
+error: expected one of `.`, `;`, `?`, `}`, or an operator, found `,`
+  --> $DIR/macro-incomplete-parse.rs:10:14
+   |
+LL |     () => ( 1,
+   |              ^ expected one of `.`, `;`, `?`, `}`, or an operator
+...
+LL |     ignored_expr!();
+   |     --------------- in this macro invocation
+   |
+   = note: this error originates in the macro `ignored_expr` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: macro expansion ignores token `,` and any following
+  --> $DIR/macro-incomplete-parse.rs:16:14
+   |
+LL |     () => ( 1, 2 )
+   |              ^
+...
+LL |         ignored_pat!() => (),
+   |         -------------- caused by the macro expansion here
+   |
+   = note: the usage of `ignored_pat!` is likely invalid in pattern context
+
+error: aborting due to 3 previous errors
+
diff --git a/tests/ui/parser/macro/macro-repeat.rs b/tests/ui/parser/macro/macro-repeat.rs
new file mode 100644
index 000000000..3ffbea217
--- /dev/null
+++ b/tests/ui/parser/macro/macro-repeat.rs
@@ -0,0 +1,12 @@
+macro_rules! mac {
+    ( $($v:tt)* ) => {
+        $v
+        //~^ ERROR still repeating at this depth
+        //~| ERROR still repeating at this depth
+    };
+}
+
+fn main() {
+    mac!(0);
+    mac!(1);
+}
diff --git a/tests/ui/parser/macro/macro-repeat.stderr b/tests/ui/parser/macro/macro-repeat.stderr
new file mode 100644
index 000000000..63554b197
--- /dev/null
+++ b/tests/ui/parser/macro/macro-repeat.stderr
@@ -0,0 +1,14 @@
+error: variable 'v' is still repeating at this depth
+  --> $DIR/macro-repeat.rs:3:9
+   |
+LL |         $v
+   |         ^^
+
+error: variable 'v' is still repeating at this depth
+  --> $DIR/macro-repeat.rs:3:9
+   |
+LL |         $v
+   |         ^^
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/macro/pub-item-macro.rs b/tests/ui/parser/macro/pub-item-macro.rs
new file mode 100644
index 000000000..f5f8a01e6
--- /dev/null
+++ b/tests/ui/parser/macro/pub-item-macro.rs
@@ -0,0 +1,21 @@
+// Issue #14660
+
+macro_rules! priv_x {
+    () => {
+        static x: u32 = 0;
+    };
+}
+
+macro_rules! pub_x { () => {
+    pub priv_x!(); //~ ERROR can't qualify macro invocation with `pub`
+    //~^ HELP remove the visibility
+    //~| HELP try adjusting the macro to put `pub` inside the invocation
+}}
+
+mod foo {
+    pub_x!();
+}
+
+fn main() {
+    let y: u32 = foo::x; //~ ERROR static `x` is private
+}
diff --git a/tests/ui/parser/macro/pub-item-macro.stderr b/tests/ui/parser/macro/pub-item-macro.stderr
new file mode 100644
index 000000000..9a2fffcce
--- /dev/null
+++ b/tests/ui/parser/macro/pub-item-macro.stderr
@@ -0,0 +1,31 @@
+error: can't qualify macro invocation with `pub`
+  --> $DIR/pub-item-macro.rs:10:5
+   |
+LL |     pub priv_x!();
+   |     ^^^ help: remove the visibility
+...
+LL |     pub_x!();
+   |     -------- in this macro invocation
+   |
+   = help: try adjusting the macro to put `pub` inside the invocation
+   = note: this error originates in the macro `pub_x` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error[E0603]: static `x` is private
+  --> $DIR/pub-item-macro.rs:20:23
+   |
+LL |     let y: u32 = foo::x;
+   |                       ^ private static
+   |
+note: the static `x` is defined here
+  --> $DIR/pub-item-macro.rs:5:9
+   |
+LL |         static x: u32 = 0;
+   |         ^^^^^^^^^^^^^^^^^^
+...
+LL |     pub_x!();
+   |     -------- in this macro invocation
+   = note: this error originates in the macro `priv_x` which comes from the expansion of the macro `pub_x` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0603`.
diff --git a/tests/ui/parser/macro/trait-non-item-macros.rs b/tests/ui/parser/macro/trait-non-item-macros.rs
new file mode 100644
index 000000000..97fb564bf
--- /dev/null
+++ b/tests/ui/parser/macro/trait-non-item-macros.rs
@@ -0,0 +1,13 @@
+macro_rules! bah {
+    ($a:expr) => {
+        $a
+    }; //~^ ERROR macro expansion ignores token `2` and any following
+}
+
+trait Bar {
+    bah!(2);
+}
+
+fn main() {
+    let _recovery_witness: () = 0; //~ ERROR mismatched types
+}
diff --git a/tests/ui/parser/macro/trait-non-item-macros.stderr b/tests/ui/parser/macro/trait-non-item-macros.stderr
new file mode 100644
index 000000000..db20e6b24
--- /dev/null
+++ b/tests/ui/parser/macro/trait-non-item-macros.stderr
@@ -0,0 +1,22 @@
+error: macro expansion ignores token `2` and any following
+  --> $DIR/trait-non-item-macros.rs:3:9
+   |
+LL |         $a
+   |         ^^
+...
+LL |     bah!(2);
+   |     ------- caused by the macro expansion here
+   |
+   = note: the usage of `bah!` is likely invalid in trait item context
+
+error[E0308]: mismatched types
+  --> $DIR/trait-non-item-macros.rs:12:33
+   |
+LL |     let _recovery_witness: () = 0;
+   |                            --   ^ expected `()`, found integer
+   |                            |
+   |                            expected due to this
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/parser/macro/trait-object-macro-matcher.rs b/tests/ui/parser/macro/trait-object-macro-matcher.rs
new file mode 100644
index 000000000..560195977
--- /dev/null
+++ b/tests/ui/parser/macro/trait-object-macro-matcher.rs
@@ -0,0 +1,14 @@
+// A single lifetime is not parsed as a type.
+// `ty` matcher in particular doesn't accept a single lifetime
+
+macro_rules! m {
+    ($t: ty) => {
+        let _: $t;
+    };
+}
+
+fn main() {
+    m!('static);
+    //~^ ERROR lifetime in trait object type must be followed by `+`
+    //~| ERROR at least one trait is required for an object type
+}
diff --git a/tests/ui/parser/macro/trait-object-macro-matcher.stderr b/tests/ui/parser/macro/trait-object-macro-matcher.stderr
new file mode 100644
index 000000000..40082564b
--- /dev/null
+++ b/tests/ui/parser/macro/trait-object-macro-matcher.stderr
@@ -0,0 +1,15 @@
+error: lifetime in trait object type must be followed by `+`
+  --> $DIR/trait-object-macro-matcher.rs:11:8
+   |
+LL |     m!('static);
+   |        ^^^^^^^
+
+error[E0224]: at least one trait is required for an object type
+  --> $DIR/trait-object-macro-matcher.rs:11:8
+   |
+LL |     m!('static);
+   |        ^^^^^^^
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0224`.
diff --git a/tests/ui/parser/macros-no-semicolon-items.rs b/tests/ui/parser/macros-no-semicolon-items.rs
new file mode 100644
index 000000000..3afc275d6
--- /dev/null
+++ b/tests/ui/parser/macros-no-semicolon-items.rs
@@ -0,0 +1,15 @@
+macro_rules! foo()  //~ ERROR semicolon
+                    //~| ERROR unexpected end of macro
+
+macro_rules! bar {
+    ($($tokens:tt)*) => {}
+}
+
+bar!( //~ ERROR semicolon
+    blah
+    blah
+    blah
+)
+
+fn main() {
+}
diff --git a/tests/ui/parser/macros-no-semicolon-items.stderr b/tests/ui/parser/macros-no-semicolon-items.stderr
new file mode 100644
index 000000000..6d2431c4a
--- /dev/null
+++ b/tests/ui/parser/macros-no-semicolon-items.stderr
@@ -0,0 +1,47 @@
+error: macros that expand to items must be delimited with braces or followed by a semicolon
+  --> $DIR/macros-no-semicolon-items.rs:1:17
+   |
+LL | macro_rules! foo()
+   |                 ^^
+   |
+help: change the delimiters to curly braces
+   |
+LL | macro_rules! foo{}
+   |                 ~~
+help: add a semicolon
+   |
+LL | macro_rules! foo();
+   |                   +
+
+error: macros that expand to items must be delimited with braces or followed by a semicolon
+  --> $DIR/macros-no-semicolon-items.rs:8:5
+   |
+LL |   bar!(
+   |  _____^
+LL | |     blah
+LL | |     blah
+LL | |     blah
+LL | | )
+   | |_^
+   |
+help: change the delimiters to curly braces
+   |
+LL ~ bar!{
+LL |     blah
+LL |     blah
+LL |     blah
+LL + }
+   |
+help: add a semicolon
+   |
+LL | );
+   |  +
+
+error: unexpected end of macro invocation
+  --> $DIR/macros-no-semicolon-items.rs:1:1
+   |
+LL | macro_rules! foo()
+   | ^^^^^^^^^^^^^^^^^^ missing tokens in macro arguments
+
+error: aborting due to 3 previous errors
+
diff --git a/tests/ui/parser/macros-no-semicolon.rs b/tests/ui/parser/macros-no-semicolon.rs
new file mode 100644
index 000000000..24d1ae9e6
--- /dev/null
+++ b/tests/ui/parser/macros-no-semicolon.rs
@@ -0,0 +1,5 @@
+fn main() {
+    assert_eq!(1, 2) //~ ERROR: expected `;`
+    assert_eq!(3, 4) //~ ERROR: expected `;`
+    println!("hello");
+}
diff --git a/tests/ui/parser/macros-no-semicolon.stderr b/tests/ui/parser/macros-no-semicolon.stderr
new file mode 100644
index 000000000..f310662db
--- /dev/null
+++ b/tests/ui/parser/macros-no-semicolon.stderr
@@ -0,0 +1,18 @@
+error: expected `;`, found `assert_eq`
+  --> $DIR/macros-no-semicolon.rs:2:21
+   |
+LL |     assert_eq!(1, 2)
+   |                     ^ help: add `;` here
+LL |     assert_eq!(3, 4)
+   |     --------- unexpected token
+
+error: expected `;`, found `println`
+  --> $DIR/macros-no-semicolon.rs:3:21
+   |
+LL |     assert_eq!(3, 4)
+   |                     ^ help: add `;` here
+LL |     println!("hello");
+   |     ------- unexpected token
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/match-arm-without-braces.rs b/tests/ui/parser/match-arm-without-braces.rs
new file mode 100644
index 000000000..bba38fd0f
--- /dev/null
+++ b/tests/ui/parser/match-arm-without-braces.rs
@@ -0,0 +1,87 @@
+struct S;
+
+impl S {
+    fn get<K, V: Default>(_: K) -> Option<V> {
+        Default::default()
+    }
+}
+
+enum Val {
+    Foo,
+    Bar,
+}
+
+impl Default for Val {
+    fn default() -> Self {
+        Val::Foo
+    }
+}
+
+fn main() {
+    match S::get(1) {
+        Some(Val::Foo) => {}
+        _ => {}
+    }
+    match S::get(2) {
+        Some(Val::Foo) => 3; //~ ERROR `match` arm body without braces
+        _ => 4,
+    }
+    match S::get(5) {
+        Some(Val::Foo) =>
+          7; //~ ERROR `match` arm body without braces
+          8;
+        _ => 9,
+    }
+    match S::get(10) {
+        Some(Val::Foo) =>
+          11; //~ ERROR `match` arm body without braces
+          12;
+        _ => (),
+    }
+    match S::get(13) {
+        None => {}
+        Some(Val::Foo) =>
+          14; //~ ERROR `match` arm body without braces
+          15;
+    }
+    match S::get(16) {
+        Some(Val::Foo) => 17 //~ ERROR expected `,` following `match` arm
+        _ => 18,
+    };
+    match S::get(19) {
+        Some(Val::Foo) =>
+          20; //~ ERROR `match` arm body without braces
+          21
+        _ => 22,
+    }
+    match S::get(23) {
+        Some(Val::Foo) =>
+          24; //~ ERROR `match` arm body without braces
+          25
+        _ => (),
+    }
+    match S::get(26) {
+        None => {}
+        Some(Val::Foo) =>
+          27; //~ ERROR `match` arm body without braces
+          28
+    }
+    match S::get(29) {
+        Some(Val::Foo) =>
+          30; //~ ERROR expected one of
+          31,
+        _ => 32,
+    }
+    match S::get(33) {
+        Some(Val::Foo) =>
+          34; //~ ERROR expected one of
+          35,
+        _ => (),
+    }
+    match S::get(36) {
+        None => {}
+        Some(Val::Foo) =>
+          37; //~ ERROR expected one of
+          38,
+    }
+}
diff --git a/tests/ui/parser/match-arm-without-braces.stderr b/tests/ui/parser/match-arm-without-braces.stderr
new file mode 100644
index 000000000..37d55aa53
--- /dev/null
+++ b/tests/ui/parser/match-arm-without-braces.stderr
@@ -0,0 +1,131 @@
+error: `match` arm body without braces
+  --> $DIR/match-arm-without-braces.rs:26:27
+   |
+LL |         Some(Val::Foo) => 3;
+   |                        -- ^- help: use a comma to end a `match` arm expression: `,`
+   |                        |  |
+   |                        |  this statement is not surrounded by a body
+   |                        while parsing the `match` arm starting here
+
+error: `match` arm body without braces
+  --> $DIR/match-arm-without-braces.rs:31:11
+   |
+LL |           Some(Val::Foo) =>
+   |                          -- while parsing the `match` arm starting here
+LL | /           7;
+LL | |           8;
+   | |____________^ these statements are not surrounded by a body
+   |
+help: surround the statements with a body
+   |
+LL ~           { 7;
+LL ~           8; }
+   |
+
+error: `match` arm body without braces
+  --> $DIR/match-arm-without-braces.rs:37:11
+   |
+LL |           Some(Val::Foo) =>
+   |                          -- while parsing the `match` arm starting here
+LL | /           11;
+LL | |           12;
+   | |_____________^ these statements are not surrounded by a body
+   |
+help: surround the statements with a body
+   |
+LL ~           { 11;
+LL ~           12; }
+   |
+
+error: `match` arm body without braces
+  --> $DIR/match-arm-without-braces.rs:44:11
+   |
+LL |           Some(Val::Foo) =>
+   |                          -- while parsing the `match` arm starting here
+LL | /           14;
+LL | |           15;
+   | |_____________^ these statements are not surrounded by a body
+   |
+help: surround the statements with a body
+   |
+LL ~           { 14;
+LL ~           15; }
+   |
+
+error: expected `,` following `match` arm
+  --> $DIR/match-arm-without-braces.rs:48:29
+   |
+LL |         Some(Val::Foo) => 17
+   |                             ^ help: missing a comma here to end this `match` arm: `,`
+
+error: `match` arm body without braces
+  --> $DIR/match-arm-without-braces.rs:53:11
+   |
+LL |           Some(Val::Foo) =>
+   |                          -- while parsing the `match` arm starting here
+LL | /           20;
+LL | |           21
+   | |____________^ these statements are not surrounded by a body
+   |
+help: surround the statements with a body
+   |
+LL ~           { 20;
+LL ~           21 }
+   |
+
+error: `match` arm body without braces
+  --> $DIR/match-arm-without-braces.rs:59:11
+   |
+LL |           Some(Val::Foo) =>
+   |                          -- while parsing the `match` arm starting here
+LL | /           24;
+LL | |           25
+   | |____________^ these statements are not surrounded by a body
+   |
+help: surround the statements with a body
+   |
+LL ~           { 24;
+LL ~           25 }
+   |
+
+error: `match` arm body without braces
+  --> $DIR/match-arm-without-braces.rs:66:11
+   |
+LL |           Some(Val::Foo) =>
+   |                          -- while parsing the `match` arm starting here
+LL | /           27;
+LL | |           28
+   | |____________^ these statements are not surrounded by a body
+   |
+help: surround the statements with a body
+   |
+LL ~           { 27;
+LL ~           28 }
+   |
+
+error: expected one of `,`, `.`, `?`, `}`, or an operator, found `;`
+  --> $DIR/match-arm-without-braces.rs:71:13
+   |
+LL |         Some(Val::Foo) =>
+   |                        -- while parsing the `match` arm starting here
+LL |           30;
+   |             ^ expected one of `,`, `.`, `?`, `}`, or an operator
+
+error: expected one of `,`, `.`, `?`, `}`, or an operator, found `;`
+  --> $DIR/match-arm-without-braces.rs:77:13
+   |
+LL |         Some(Val::Foo) =>
+   |                        -- while parsing the `match` arm starting here
+LL |           34;
+   |             ^ expected one of `,`, `.`, `?`, `}`, or an operator
+
+error: expected one of `,`, `.`, `?`, `}`, or an operator, found `;`
+  --> $DIR/match-arm-without-braces.rs:84:13
+   |
+LL |         Some(Val::Foo) =>
+   |                        -- while parsing the `match` arm starting here
+LL |           37;
+   |             ^ expected one of `,`, `.`, `?`, `}`, or an operator
+
+error: aborting due to 11 previous errors
+
diff --git a/tests/ui/parser/match-arrows-block-then-binop.rs b/tests/ui/parser/match-arrows-block-then-binop.rs
new file mode 100644
index 000000000..56c917c74
--- /dev/null
+++ b/tests/ui/parser/match-arrows-block-then-binop.rs
@@ -0,0 +1,7 @@
+fn main() {
+    let _ = match 0 {
+      0 => {
+        0
+      } + 5 //~ ERROR expected pattern, found `+`
+    };
+}
diff --git a/tests/ui/parser/match-arrows-block-then-binop.stderr b/tests/ui/parser/match-arrows-block-then-binop.stderr
new file mode 100644
index 000000000..cb361a3db
--- /dev/null
+++ b/tests/ui/parser/match-arrows-block-then-binop.stderr
@@ -0,0 +1,15 @@
+error: expected pattern, found `+`
+  --> $DIR/match-arrows-block-then-binop.rs:5:9
+   |
+LL |       } + 5
+   |         ^ expected pattern
+   |
+help: parentheses are required to parse this as an expression
+   |
+LL ~       0 => ({
+LL |         0
+LL ~       }) + 5
+   |
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/match-refactor-to-expr.fixed b/tests/ui/parser/match-refactor-to-expr.fixed
new file mode 100644
index 000000000..423147b27
--- /dev/null
+++ b/tests/ui/parser/match-refactor-to-expr.fixed
@@ -0,0 +1,12 @@
+// run-rustfix
+
+fn main() {
+    let foo =
+         //~ NOTE while parsing this `match` expression
+        Some(4).unwrap_or(5)
+        //~^ NOTE expected one of `.`, `?`, `{`, or an operator
+        ; //~ NOTE unexpected token
+        //~^ ERROR expected one of `.`, `?`, `{`, or an operator, found `;`
+
+    println!("{}", foo)
+}
diff --git a/tests/ui/parser/match-refactor-to-expr.rs b/tests/ui/parser/match-refactor-to-expr.rs
new file mode 100644
index 000000000..fcba5d044
--- /dev/null
+++ b/tests/ui/parser/match-refactor-to-expr.rs
@@ -0,0 +1,12 @@
+// run-rustfix
+
+fn main() {
+    let foo =
+        match //~ NOTE while parsing this `match` expression
+        Some(4).unwrap_or(5)
+        //~^ NOTE expected one of `.`, `?`, `{`, or an operator
+        ; //~ NOTE unexpected token
+        //~^ ERROR expected one of `.`, `?`, `{`, or an operator, found `;`
+
+    println!("{}", foo)
+}
diff --git a/tests/ui/parser/match-refactor-to-expr.stderr b/tests/ui/parser/match-refactor-to-expr.stderr
new file mode 100644
index 000000000..851bef8f2
--- /dev/null
+++ b/tests/ui/parser/match-refactor-to-expr.stderr
@@ -0,0 +1,16 @@
+error: expected one of `.`, `?`, `{`, or an operator, found `;`
+  --> $DIR/match-refactor-to-expr.rs:8:9
+   |
+LL |         match
+   |         -----
+   |         |
+   |         while parsing this `match` expression
+   |         help: try removing this `match`
+LL |         Some(4).unwrap_or(5)
+   |                             - expected one of `.`, `?`, `{`, or an operator
+LL |
+LL |         ;
+   |         ^ unexpected token
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/mbe_missing_right_paren.rs b/tests/ui/parser/mbe_missing_right_paren.rs
new file mode 100644
index 000000000..689176b3e
--- /dev/null
+++ b/tests/ui/parser/mbe_missing_right_paren.rs
@@ -0,0 +1,3 @@
+// ignore-tidy-trailing-newlines
+// error-pattern: aborting due to 3 previous errors
+macro_rules! abc(ؼ
\ No newline at end of file
diff --git a/tests/ui/parser/mbe_missing_right_paren.stderr b/tests/ui/parser/mbe_missing_right_paren.stderr
new file mode 100644
index 000000000..ccaf77d39
--- /dev/null
+++ b/tests/ui/parser/mbe_missing_right_paren.stderr
@@ -0,0 +1,31 @@
+error: this file contains an unclosed delimiter
+  --> $DIR/mbe_missing_right_paren.rs:3:19
+   |
+LL | macro_rules! abc(ؼ
+   |                 - ^
+   |                 |
+   |                 unclosed delimiter
+
+error: macros that expand to items must be delimited with braces or followed by a semicolon
+  --> $DIR/mbe_missing_right_paren.rs:3:17
+   |
+LL | macro_rules! abc(ؼ
+   |                 ^^
+   |
+help: change the delimiters to curly braces
+   |
+LL | macro_rules! abc { /* items */ }
+   |                  ~~~~~~~~~~~~~~~
+help: add a semicolon
+   |
+LL | macro_rules! abc(ؼ;
+   |                   +
+
+error: unexpected end of macro invocation
+  --> $DIR/mbe_missing_right_paren.rs:3:19
+   |
+LL | macro_rules! abc(ؼ
+   |                   ^ missing tokens in macro arguments
+
+error: aborting due to 3 previous errors
+
diff --git a/tests/ui/parser/method-call-on-struct-literal-in-if-condition.rs b/tests/ui/parser/method-call-on-struct-literal-in-if-condition.rs
new file mode 100644
index 000000000..8be7c9ee8
--- /dev/null
+++ b/tests/ui/parser/method-call-on-struct-literal-in-if-condition.rs
@@ -0,0 +1,13 @@
+pub struct Example { a: i32 }
+
+impl Example {
+    fn is_pos(&self) -> bool { self.a > 0 }
+}
+
+fn one() -> i32 { 1 }
+
+fn main() {
+    if Example { a: one(), }.is_pos() { //~ ERROR invalid struct literal
+        println!("Positive!");
+    }
+}
diff --git a/tests/ui/parser/method-call-on-struct-literal-in-if-condition.stderr b/tests/ui/parser/method-call-on-struct-literal-in-if-condition.stderr
new file mode 100644
index 000000000..7fd7ffc94
--- /dev/null
+++ b/tests/ui/parser/method-call-on-struct-literal-in-if-condition.stderr
@@ -0,0 +1,13 @@
+error: invalid struct literal
+  --> $DIR/method-call-on-struct-literal-in-if-condition.rs:10:8
+   |
+LL |     if Example { a: one(), }.is_pos() {
+   |        ^^^^^^^^^^^^^^^^^^^^^
+   |
+help: you might need to surround the struct literal in parentheses
+   |
+LL |     if (Example { a: one(), }).is_pos() {
+   |        +                     +
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/mismatched-braces/missing-close-brace-in-impl-trait.rs b/tests/ui/parser/mismatched-braces/missing-close-brace-in-impl-trait.rs
new file mode 100644
index 000000000..8f46970b1
--- /dev/null
+++ b/tests/ui/parser/mismatched-braces/missing-close-brace-in-impl-trait.rs
@@ -0,0 +1,13 @@
+fn main() {}
+
+impl T for () { //~ ERROR cannot find trait `T` in this scope
+
+fn foo(&self) {}
+
+trait T { //~ ERROR trait is not supported in `trait`s or `impl`s
+    fn foo(&self);
+}
+
+pub(crate) struct Bar<T>(); //~ ERROR struct is not supported in `trait`s or `impl`s
+
+//~ ERROR this file contains an unclosed delimiter
diff --git a/tests/ui/parser/mismatched-braces/missing-close-brace-in-impl-trait.stderr b/tests/ui/parser/mismatched-braces/missing-close-brace-in-impl-trait.stderr
new file mode 100644
index 000000000..cc7cc0c55
--- /dev/null
+++ b/tests/ui/parser/mismatched-braces/missing-close-brace-in-impl-trait.stderr
@@ -0,0 +1,34 @@
+error: this file contains an unclosed delimiter
+  --> $DIR/missing-close-brace-in-impl-trait.rs:13:52
+   |
+LL | impl T for () {
+   |               - unclosed delimiter
+...
+LL |
+   |                                                    ^
+
+error: trait is not supported in `trait`s or `impl`s
+  --> $DIR/missing-close-brace-in-impl-trait.rs:7:1
+   |
+LL | trait T {
+   | ^^^^^^^
+   |
+   = help: consider moving the trait out to a nearby module scope
+
+error: struct is not supported in `trait`s or `impl`s
+  --> $DIR/missing-close-brace-in-impl-trait.rs:11:1
+   |
+LL | pub(crate) struct Bar<T>();
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = help: consider moving the struct out to a nearby module scope
+
+error[E0405]: cannot find trait `T` in this scope
+  --> $DIR/missing-close-brace-in-impl-trait.rs:3:6
+   |
+LL | impl T for () {
+   |      ^ not found in this scope
+
+error: aborting due to 4 previous errors
+
+For more information about this error, try `rustc --explain E0405`.
diff --git a/tests/ui/parser/mismatched-braces/missing-close-brace-in-struct.rs b/tests/ui/parser/mismatched-braces/missing-close-brace-in-struct.rs
new file mode 100644
index 000000000..090a17b41
--- /dev/null
+++ b/tests/ui/parser/mismatched-braces/missing-close-brace-in-struct.rs
@@ -0,0 +1,13 @@
+pub(crate) struct Bar<T> {
+  foo: T,
+
+trait T { //~ ERROR expected identifier, found keyword `trait`
+    fn foo(&self);
+}
+
+
+impl T for Bar<usize> {
+fn foo(&self) {}
+}
+
+fn main() {} //~ ERROR this file contains an unclosed delimiter
diff --git a/tests/ui/parser/mismatched-braces/missing-close-brace-in-struct.stderr b/tests/ui/parser/mismatched-braces/missing-close-brace-in-struct.stderr
new file mode 100644
index 000000000..ad1e90e43
--- /dev/null
+++ b/tests/ui/parser/mismatched-braces/missing-close-brace-in-struct.stderr
@@ -0,0 +1,20 @@
+error: this file contains an unclosed delimiter
+  --> $DIR/missing-close-brace-in-struct.rs:13:65
+   |
+LL | pub(crate) struct Bar<T> {
+   |                          - unclosed delimiter
+...
+LL | fn main() {}
+   |                                                                 ^
+
+error: expected identifier, found keyword `trait`
+  --> $DIR/missing-close-brace-in-struct.rs:4:1
+   |
+LL | pub(crate) struct Bar<T> {
+   |                   --- while parsing this struct
+...
+LL | trait T {
+   | ^^^^^ expected identifier, found keyword
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/mismatched-braces/missing-close-brace-in-trait.rs b/tests/ui/parser/mismatched-braces/missing-close-brace-in-trait.rs
new file mode 100644
index 000000000..b6932deb5
--- /dev/null
+++ b/tests/ui/parser/mismatched-braces/missing-close-brace-in-trait.rs
@@ -0,0 +1,12 @@
+trait T {
+    fn foo(&self);
+
+pub(crate) struct Bar<T>();
+//~^ ERROR struct is not supported in `trait`s or `impl`s
+
+impl T for Bar<usize> {
+//~^ ERROR implementation is not supported in `trait`s or `impl`s
+fn foo(&self) {}
+}
+
+fn main() {} //~ ERROR this file contains an unclosed delimiter
diff --git a/tests/ui/parser/mismatched-braces/missing-close-brace-in-trait.stderr b/tests/ui/parser/mismatched-braces/missing-close-brace-in-trait.stderr
new file mode 100644
index 000000000..7c6254356
--- /dev/null
+++ b/tests/ui/parser/mismatched-braces/missing-close-brace-in-trait.stderr
@@ -0,0 +1,27 @@
+error: this file contains an unclosed delimiter
+  --> $DIR/missing-close-brace-in-trait.rs:12:65
+   |
+LL | trait T {
+   |         - unclosed delimiter
+...
+LL | fn main() {}
+   |                                                                 ^
+
+error: struct is not supported in `trait`s or `impl`s
+  --> $DIR/missing-close-brace-in-trait.rs:4:1
+   |
+LL | pub(crate) struct Bar<T>();
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = help: consider moving the struct out to a nearby module scope
+
+error: implementation is not supported in `trait`s or `impl`s
+  --> $DIR/missing-close-brace-in-trait.rs:7:1
+   |
+LL | impl T for Bar<usize> {
+   | ^^^^^^^^^^^^^^^^^^^^^
+   |
+   = help: consider moving the implementation out to a nearby module scope
+
+error: aborting due to 3 previous errors
+
diff --git a/tests/ui/parser/mismatched-delim-brace-empty-block.rs b/tests/ui/parser/mismatched-delim-brace-empty-block.rs
new file mode 100644
index 000000000..61d7a9af2
--- /dev/null
+++ b/tests/ui/parser/mismatched-delim-brace-empty-block.rs
@@ -0,0 +1,5 @@
+fn main() {
+
+}
+    let _ = ();
+} //~ ERROR unexpected closing delimiter
diff --git a/tests/ui/parser/mismatched-delim-brace-empty-block.stderr b/tests/ui/parser/mismatched-delim-brace-empty-block.stderr
new file mode 100644
index 000000000..165eb8ae9
--- /dev/null
+++ b/tests/ui/parser/mismatched-delim-brace-empty-block.stderr
@@ -0,0 +1,14 @@
+error: unexpected closing delimiter: `}`
+  --> $DIR/mismatched-delim-brace-empty-block.rs:5:1
+   |
+LL | fn main() {
+   |           - this opening brace...
+LL |
+LL | }
+   | - ...matches this closing brace
+LL |     let _ = ();
+LL | }
+   | ^ unexpected closing delimiter
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/missing-closing-angle-bracket-eq-constraint.rs b/tests/ui/parser/missing-closing-angle-bracket-eq-constraint.rs
new file mode 100644
index 000000000..da95c1bfa
--- /dev/null
+++ b/tests/ui/parser/missing-closing-angle-bracket-eq-constraint.rs
@@ -0,0 +1,23 @@
+struct Foo<T1, T2> {
+  _a : T1,
+  _b : T2,
+}
+
+fn test1<T>(arg : T) {
+  let v : Vec<(u32,_) = vec![];
+    //~^ ERROR: expected one of
+    //~| ERROR: type annotations needed
+}
+
+fn test2<T1, T2>(arg1 : T1, arg2 : T2) {
+  let foo : Foo::<T1, T2 = Foo {_a : arg1, _b : arg2};
+    //~^ ERROR: expected one of
+}
+
+fn test3<'a>(arg : &'a u32) {
+  let v : Vec<'a = vec![];
+    //~^ ERROR: expected one of
+    //~| ERROR: type annotations needed for `Vec<T>`
+}
+
+fn main() {}
diff --git a/tests/ui/parser/missing-closing-angle-bracket-eq-constraint.stderr b/tests/ui/parser/missing-closing-angle-bracket-eq-constraint.stderr
new file mode 100644
index 000000000..bad241634
--- /dev/null
+++ b/tests/ui/parser/missing-closing-angle-bracket-eq-constraint.stderr
@@ -0,0 +1,66 @@
+error: expected one of `,`, `:`, or `>`, found `=`
+  --> $DIR/missing-closing-angle-bracket-eq-constraint.rs:7:23
+   |
+LL |   let v : Vec<(u32,_) = vec![];
+   |       -             - ^ expected one of `,`, `:`, or `>`
+   |       |             |
+   |       |             maybe try to close unmatched angle bracket
+   |       while parsing the type for `v`
+   |
+help: you might have meant to end the type parameters here
+   |
+LL |   let v : Vec<(u32,_)> = vec![];
+   |                      +
+
+error: expected one of `!`, `(`, `+`, `,`, `::`, `<`, or `>`, found `{`
+  --> $DIR/missing-closing-angle-bracket-eq-constraint.rs:13:32
+   |
+LL |   let foo : Foo::<T1, T2 = Foo {_a : arg1, _b : arg2};
+   |       ---                      ^ expected one of 7 possible tokens
+   |       |
+   |       while parsing the type for `foo`
+   |
+help: you might have meant to end the type parameters here
+   |
+LL |   let foo : Foo::<T1>, T2 = Foo {_a : arg1, _b : arg2};
+   |                     +
+
+error: expected one of `,`, `:`, or `>`, found `=`
+  --> $DIR/missing-closing-angle-bracket-eq-constraint.rs:18:18
+   |
+LL |   let v : Vec<'a = vec![];
+   |       -       -- ^ expected one of `,`, `:`, or `>`
+   |       |       |
+   |       |       maybe try to close unmatched angle bracket
+   |       while parsing the type for `v`
+   |
+help: you might have meant to end the type parameters here
+   |
+LL |   let v : Vec<'a> = vec![];
+   |                 +
+
+error[E0282]: type annotations needed for `Vec<T>`
+  --> $DIR/missing-closing-angle-bracket-eq-constraint.rs:7:7
+   |
+LL |   let v : Vec<(u32,_) = vec![];
+   |       ^
+   |
+help: consider giving `v` an explicit type, where the type for type parameter `T` is specified
+   |
+LL |   let v: Vec<T> : Vec<(u32,_) = vec![];
+   |        ++++++++
+
+error[E0282]: type annotations needed for `Vec<T>`
+  --> $DIR/missing-closing-angle-bracket-eq-constraint.rs:18:7
+   |
+LL |   let v : Vec<'a = vec![];
+   |       ^
+   |
+help: consider giving `v` an explicit type, where the type for type parameter `T` is specified
+   |
+LL |   let v: Vec<T> : Vec<'a = vec![];
+   |        ++++++++
+
+error: aborting due to 5 previous errors
+
+For more information about this error, try `rustc --explain E0282`.
diff --git a/tests/ui/parser/missing-closing-angle-bracket-struct-field-ty.rs b/tests/ui/parser/missing-closing-angle-bracket-struct-field-ty.rs
new file mode 100644
index 000000000..d69a56c51
--- /dev/null
+++ b/tests/ui/parser/missing-closing-angle-bracket-struct-field-ty.rs
@@ -0,0 +1,11 @@
+// run-rustifx
+#![allow(unused)]
+use std::sync::{Arc, Mutex};
+
+pub struct Foo {
+    a: Mutex<usize>,
+    b: Arc<Mutex<usize>, //~ HELP you might have meant to end the type parameters here
+    c: Arc<Mutex<usize>>,
+} //~ ERROR expected one of
+
+fn main() {}
diff --git a/tests/ui/parser/missing-closing-angle-bracket-struct-field-ty.stderr b/tests/ui/parser/missing-closing-angle-bracket-struct-field-ty.stderr
new file mode 100644
index 000000000..6d8b0c3fc
--- /dev/null
+++ b/tests/ui/parser/missing-closing-angle-bracket-struct-field-ty.stderr
@@ -0,0 +1,18 @@
+error: expected one of `>`, a const expression, lifetime, or type, found `}`
+  --> $DIR/missing-closing-angle-bracket-struct-field-ty.rs:9:1
+   |
+LL | pub struct Foo {
+   |            --- while parsing this struct
+...
+LL |     c: Arc<Mutex<usize>>,
+   |                          - expected one of `>`, a const expression, lifetime, or type
+LL | }
+   | ^ unexpected token
+   |
+help: you might have meant to end the type parameters here
+   |
+LL |     b: Arc<Mutex<usize>>,
+   |                        +
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/missing-semicolon.rs b/tests/ui/parser/missing-semicolon.rs
new file mode 100644
index 000000000..f68d177c0
--- /dev/null
+++ b/tests/ui/parser/missing-semicolon.rs
@@ -0,0 +1,8 @@
+macro_rules! m {
+    ($($e1:expr),*; $($e2:expr),*) => {
+        $( let x = $e1 )*; //~ ERROR expected one of `.`, `;`, `?`, `else`, or
+        $( println!("{}", $e2) )*;
+    }
+}
+
+fn main() { m!(0, 0; 0, 0); }
diff --git a/tests/ui/parser/missing-semicolon.stderr b/tests/ui/parser/missing-semicolon.stderr
new file mode 100644
index 000000000..e0d5e84ec
--- /dev/null
+++ b/tests/ui/parser/missing-semicolon.stderr
@@ -0,0 +1,13 @@
+error: expected one of `.`, `;`, `?`, `else`, or an operator, found keyword `let`
+  --> $DIR/missing-semicolon.rs:3:12
+   |
+LL |         $( let x = $e1 )*;
+   |            ^^^ expected one of `.`, `;`, `?`, `else`, or an operator
+...
+LL | fn main() { m!(0, 0; 0, 0); }
+   |             -------------- in this macro invocation
+   |
+   = note: this error originates in the macro `m` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/missing_right_paren.rs b/tests/ui/parser/missing_right_paren.rs
new file mode 100644
index 000000000..810dee957
--- /dev/null
+++ b/tests/ui/parser/missing_right_paren.rs
@@ -0,0 +1,3 @@
+// ignore-tidy-trailing-newlines
+// error-pattern: aborting due to 4 previous errors
+fn main((ؼ
\ No newline at end of file
diff --git a/tests/ui/parser/missing_right_paren.stderr b/tests/ui/parser/missing_right_paren.stderr
new file mode 100644
index 000000000..3fe0d0f42
--- /dev/null
+++ b/tests/ui/parser/missing_right_paren.stderr
@@ -0,0 +1,32 @@
+error: this file contains an unclosed delimiter
+  --> $DIR/missing_right_paren.rs:3:11
+   |
+LL | fn main((ؼ
+   |        -- ^
+   |        ||
+   |        |unclosed delimiter
+   |        unclosed delimiter
+
+error: this file contains an unclosed delimiter
+  --> $DIR/missing_right_paren.rs:3:11
+   |
+LL | fn main((ؼ
+   |        -- ^
+   |        ||
+   |        |unclosed delimiter
+   |        unclosed delimiter
+
+error: expected one of `:` or `|`, found `)`
+  --> $DIR/missing_right_paren.rs:3:11
+   |
+LL | fn main((ؼ
+   |           ^ expected one of `:` or `|`
+
+error: expected one of `->`, `where`, or `{`, found `<eof>`
+  --> $DIR/missing_right_paren.rs:3:11
+   |
+LL | fn main((ؼ
+   |           ^ expected one of `->`, `where`, or `{`
+
+error: aborting due to 4 previous errors
+
diff --git a/tests/ui/parser/misspelled-macro-rules.fixed b/tests/ui/parser/misspelled-macro-rules.fixed
new file mode 100644
index 000000000..62be913d8
--- /dev/null
+++ b/tests/ui/parser/misspelled-macro-rules.fixed
@@ -0,0 +1,13 @@
+// Regression test for issue #91227.
+
+// run-rustfix
+
+#![allow(unused_macros)]
+
+macro_rules! thing {
+//~^ ERROR: expected one of
+//~| HELP: perhaps you meant to define a macro
+    () => {}
+}
+
+fn main() {}
diff --git a/tests/ui/parser/misspelled-macro-rules.rs b/tests/ui/parser/misspelled-macro-rules.rs
new file mode 100644
index 000000000..4290e6e5e
--- /dev/null
+++ b/tests/ui/parser/misspelled-macro-rules.rs
@@ -0,0 +1,13 @@
+// Regression test for issue #91227.
+
+// run-rustfix
+
+#![allow(unused_macros)]
+
+marco_rules! thing {
+//~^ ERROR: expected one of
+//~| HELP: perhaps you meant to define a macro
+    () => {}
+}
+
+fn main() {}
diff --git a/tests/ui/parser/misspelled-macro-rules.stderr b/tests/ui/parser/misspelled-macro-rules.stderr
new file mode 100644
index 000000000..56df71238
--- /dev/null
+++ b/tests/ui/parser/misspelled-macro-rules.stderr
@@ -0,0 +1,10 @@
+error: expected one of `(`, `[`, or `{`, found `thing`
+  --> $DIR/misspelled-macro-rules.rs:7:14
+   |
+LL | marco_rules! thing {
+   | -----------  ^^^^^ expected one of `(`, `[`, or `{`
+   | |
+   | help: perhaps you meant to define a macro: `macro_rules`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/mod_file_not_exist.rs b/tests/ui/parser/mod_file_not_exist.rs
new file mode 100644
index 000000000..7b079eb02
--- /dev/null
+++ b/tests/ui/parser/mod_file_not_exist.rs
@@ -0,0 +1,9 @@
+// ignore-windows
+
+mod not_a_real_file; //~ ERROR file not found for module `not_a_real_file`
+//~^ HELP to create the module `not_a_real_file`, create file
+
+fn main() {
+    assert_eq!(mod_file_aux::bar(), 10);
+    //~^ ERROR failed to resolve: use of undeclared crate or module `mod_file_aux`
+}
diff --git a/tests/ui/parser/mod_file_not_exist.stderr b/tests/ui/parser/mod_file_not_exist.stderr
new file mode 100644
index 000000000..62456d518
--- /dev/null
+++ b/tests/ui/parser/mod_file_not_exist.stderr
@@ -0,0 +1,18 @@
+error[E0583]: file not found for module `not_a_real_file`
+  --> $DIR/mod_file_not_exist.rs:3:1
+   |
+LL | mod not_a_real_file;
+   | ^^^^^^^^^^^^^^^^^^^^
+   |
+   = help: to create the module `not_a_real_file`, create file "$DIR/not_a_real_file.rs" or "$DIR/not_a_real_file/mod.rs"
+
+error[E0433]: failed to resolve: use of undeclared crate or module `mod_file_aux`
+  --> $DIR/mod_file_not_exist.rs:7:16
+   |
+LL |     assert_eq!(mod_file_aux::bar(), 10);
+   |                ^^^^^^^^^^^^ use of undeclared crate or module `mod_file_aux`
+
+error: aborting due to 2 previous errors
+
+Some errors have detailed explanations: E0433, E0583.
+For more information about an error, try `rustc --explain E0433`.
diff --git a/tests/ui/parser/mod_file_not_exist_windows.rs b/tests/ui/parser/mod_file_not_exist_windows.rs
new file mode 100644
index 000000000..5db21e2bb
--- /dev/null
+++ b/tests/ui/parser/mod_file_not_exist_windows.rs
@@ -0,0 +1,9 @@
+// only-windows
+
+mod not_a_real_file; //~ ERROR file not found for module `not_a_real_file`
+//~^ HELP to create the module `not_a_real_file`, create file
+
+fn main() {
+    assert_eq!(mod_file_aux::bar(), 10);
+    //~^ ERROR failed to resolve: use of undeclared crate or module `mod_file_aux`
+}
diff --git a/tests/ui/parser/mod_file_not_exist_windows.stderr b/tests/ui/parser/mod_file_not_exist_windows.stderr
new file mode 100644
index 000000000..d5143dbe9
--- /dev/null
+++ b/tests/ui/parser/mod_file_not_exist_windows.stderr
@@ -0,0 +1,18 @@
+error[E0583]: file not found for module `not_a_real_file`
+  --> $DIR/mod_file_not_exist_windows.rs:3:1
+   |
+LL | mod not_a_real_file;
+   | ^^^^^^^^^^^^^^^^^^^^
+   |
+   = help: to create the module `not_a_real_file`, create file "$DIR/not_a_real_file.rs" or "$DIR/not_a_real_file/mod.rs"
+
+error[E0433]: failed to resolve: use of undeclared crate or module `mod_file_aux`
+  --> $DIR/mod_file_not_exist_windows.rs:7:16
+   |
+LL |     assert_eq!(mod_file_aux::bar(), 10);
+   |                ^^^^^^^^^^^^ use of undeclared crate or module `mod_file_aux`
+
+error: aborting due to 2 previous errors
+
+Some errors have detailed explanations: E0433, E0583.
+For more information about an error, try `rustc --explain E0433`.
diff --git a/tests/ui/parser/mod_file_with_path_attr.rs b/tests/ui/parser/mod_file_with_path_attr.rs
new file mode 100644
index 000000000..9450d89e5
--- /dev/null
+++ b/tests/ui/parser/mod_file_with_path_attr.rs
@@ -0,0 +1,8 @@
+// normalize-stderr-test: "not_a_real_file.rs:.*\(" -> "not_a_real_file.rs: $$FILE_NOT_FOUND_MSG ("
+
+#[path = "not_a_real_file.rs"]
+mod m; //~ ERROR not_a_real_file.rs
+
+fn main() {
+    assert_eq!(m::foo(), 10);
+}
diff --git a/tests/ui/parser/mod_file_with_path_attr.stderr b/tests/ui/parser/mod_file_with_path_attr.stderr
new file mode 100644
index 000000000..cd1add73d
--- /dev/null
+++ b/tests/ui/parser/mod_file_with_path_attr.stderr
@@ -0,0 +1,8 @@
+error: couldn't read $DIR/not_a_real_file.rs: $FILE_NOT_FOUND_MSG (os error 2)
+  --> $DIR/mod_file_with_path_attr.rs:4:1
+   |
+LL | mod m;
+   | ^^^^^^
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/multibyte-char-use-seperator-issue-80134.rs b/tests/ui/parser/multibyte-char-use-seperator-issue-80134.rs
new file mode 100644
index 000000000..7e7995d67
--- /dev/null
+++ b/tests/ui/parser/multibyte-char-use-seperator-issue-80134.rs
@@ -0,0 +1,10 @@
+// Regression test for #80134.
+
+fn main() {
+    (()é);
+    //~^ ERROR: expected one of `)`, `,`, `.`, `?`, or an operator
+    //~| ERROR: cannot find value `é` in this scope
+    (()氷);
+    //~^ ERROR: expected one of `)`, `,`, `.`, `?`, or an operator
+    //~| ERROR: cannot find value `氷` in this scope
+}
diff --git a/tests/ui/parser/multibyte-char-use-seperator-issue-80134.stderr b/tests/ui/parser/multibyte-char-use-seperator-issue-80134.stderr
new file mode 100644
index 000000000..21e71aa12
--- /dev/null
+++ b/tests/ui/parser/multibyte-char-use-seperator-issue-80134.stderr
@@ -0,0 +1,33 @@
+error: expected one of `)`, `,`, `.`, `?`, or an operator, found `é`
+  --> $DIR/multibyte-char-use-seperator-issue-80134.rs:4:8
+   |
+LL |     (()é);
+   |        ^
+   |        |
+   |        expected one of `)`, `,`, `.`, `?`, or an operator
+   |        help: missing `,`
+
+error: expected one of `)`, `,`, `.`, `?`, or an operator, found `氷`
+  --> $DIR/multibyte-char-use-seperator-issue-80134.rs:7:8
+   |
+LL |     (()氷);
+   |        -^
+   |        |
+   |        expected one of `)`, `,`, `.`, `?`, or an operator
+   |        help: missing `,`
+
+error[E0425]: cannot find value `é` in this scope
+  --> $DIR/multibyte-char-use-seperator-issue-80134.rs:4:8
+   |
+LL |     (()é);
+   |        ^ not found in this scope
+
+error[E0425]: cannot find value `氷` in this scope
+  --> $DIR/multibyte-char-use-seperator-issue-80134.rs:7:8
+   |
+LL |     (()氷);
+   |        ^^ not found in this scope
+
+error: aborting due to 4 previous errors
+
+For more information about this error, try `rustc --explain E0425`.
diff --git a/tests/ui/parser/multiline-comment-line-tracking.rs b/tests/ui/parser/multiline-comment-line-tracking.rs
new file mode 100644
index 000000000..d4735e8a7
--- /dev/null
+++ b/tests/ui/parser/multiline-comment-line-tracking.rs
@@ -0,0 +1,9 @@
+// Parse error on line X, but is reported on line Y instead.
+
+/* 1
+ * 2
+ * 3
+ */
+fn main() {
+  %; //~ ERROR expected expression, found `%`
+}
diff --git a/tests/ui/parser/multiline-comment-line-tracking.stderr b/tests/ui/parser/multiline-comment-line-tracking.stderr
new file mode 100644
index 000000000..cac0c801a
--- /dev/null
+++ b/tests/ui/parser/multiline-comment-line-tracking.stderr
@@ -0,0 +1,8 @@
+error: expected expression, found `%`
+  --> $DIR/multiline-comment-line-tracking.rs:8:3
+   |
+LL |   %;
+   |   ^ expected expression
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/multitrait.rs b/tests/ui/parser/multitrait.rs
new file mode 100644
index 000000000..f9b4b37ac
--- /dev/null
+++ b/tests/ui/parser/multitrait.rs
@@ -0,0 +1,9 @@
+struct S {
+ y: isize
+}
+
+impl Cmp, ToString for S {
+//~^ ERROR: expected one of `!`, `(`, `+`, `::`, `<`, `for`, `where`, or `{`, found `,`
+  fn eq(&&other: S) { false }
+  fn to_string(&self) -> String { "hi".to_string() }
+}
diff --git a/tests/ui/parser/multitrait.stderr b/tests/ui/parser/multitrait.stderr
new file mode 100644
index 000000000..5a8bb2f7a
--- /dev/null
+++ b/tests/ui/parser/multitrait.stderr
@@ -0,0 +1,8 @@
+error: expected one of `!`, `(`, `+`, `::`, `<`, `for`, `where`, or `{`, found `,`
+  --> $DIR/multitrait.rs:5:9
+   |
+LL | impl Cmp, ToString for S {
+   |         ^ expected one of 8 possible tokens
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/mut-patterns.rs b/tests/ui/parser/mut-patterns.rs
new file mode 100644
index 000000000..8b83d6ab2
--- /dev/null
+++ b/tests/ui/parser/mut-patterns.rs
@@ -0,0 +1,48 @@
+// Can't put mut in non-ident pattern
+
+// edition:2018
+
+#![feature(box_patterns)]
+#![allow(warnings)]
+
+pub fn main() {
+    let mut _ = 0; //~ ERROR `mut` must be followed by a named binding
+    let mut (_, _) = (0, 0); //~ ERROR `mut` must be followed by a named binding
+
+    let mut (x @ y) = 0; //~ ERROR `mut` must be attached to each individual binding
+
+    let mut mut x = 0;
+    //~^ ERROR `mut` on a binding may not be repeated
+    //~| remove the additional `mut`s
+
+    struct Foo { x: isize }
+    let mut Foo { x: x } = Foo { x: 3 };
+    //~^ ERROR `mut` must be attached to each individual binding
+    //~| add `mut` to each binding
+
+    let mut Foo { x } = Foo { x: 3 };
+    //~^ ERROR `mut` must be attached to each individual binding
+    //~| add `mut` to each binding
+
+    struct r#yield(u8, u8);
+    let mut mut yield(become, await) = r#yield(0, 0);
+    //~^ ERROR `mut` on a binding may not be repeated
+    //~| ERROR `mut` must be attached to each individual binding
+    //~| ERROR expected identifier, found reserved keyword `yield`
+    //~| ERROR expected identifier, found reserved keyword `become`
+    //~| ERROR expected identifier, found keyword `await`
+
+    struct W<T, U>(T, U);
+    struct B { f: Box<u8> }
+    let mut W(mut a, W(b, W(ref c, W(d, B { box f }))))
+    //~^ ERROR `mut` must be attached to each individual binding
+        = W(0, W(1, W(2, W(3, B { f: Box::new(4u8) }))));
+
+    // Make sure we don't accidentally allow `mut $p` where `$p:pat`.
+    macro_rules! foo {
+        ($p:pat) => {
+            let mut $p = 0; //~ ERROR expected identifier, found `x`
+        }
+    }
+    foo!(x);
+}
diff --git a/tests/ui/parser/mut-patterns.stderr b/tests/ui/parser/mut-patterns.stderr
new file mode 100644
index 000000000..f179d8c9e
--- /dev/null
+++ b/tests/ui/parser/mut-patterns.stderr
@@ -0,0 +1,114 @@
+error: `mut` must be followed by a named binding
+  --> $DIR/mut-patterns.rs:9:9
+   |
+LL |     let mut _ = 0;
+   |         ^^^^^ help: remove the `mut` prefix: `_`
+   |
+   = note: `mut` may be followed by `variable` and `variable @ pattern`
+
+error: `mut` must be followed by a named binding
+  --> $DIR/mut-patterns.rs:10:9
+   |
+LL |     let mut (_, _) = (0, 0);
+   |         ^^^^^^^^^^ help: remove the `mut` prefix: `(_, _)`
+   |
+   = note: `mut` may be followed by `variable` and `variable @ pattern`
+
+error: `mut` must be attached to each individual binding
+  --> $DIR/mut-patterns.rs:12:9
+   |
+LL |     let mut (x @ y) = 0;
+   |         ^^^^^^^^^^^ help: add `mut` to each binding: `(mut x @ mut y)`
+   |
+   = note: `mut` may be followed by `variable` and `variable @ pattern`
+
+error: `mut` on a binding may not be repeated
+  --> $DIR/mut-patterns.rs:14:13
+   |
+LL |     let mut mut x = 0;
+   |             ^^^ help: remove the additional `mut`s
+
+error: `mut` must be attached to each individual binding
+  --> $DIR/mut-patterns.rs:19:9
+   |
+LL |     let mut Foo { x: x } = Foo { x: 3 };
+   |         ^^^^^^^^^^^^^^^^ help: add `mut` to each binding: `Foo { x: mut x }`
+   |
+   = note: `mut` may be followed by `variable` and `variable @ pattern`
+
+error: `mut` must be attached to each individual binding
+  --> $DIR/mut-patterns.rs:23:9
+   |
+LL |     let mut Foo { x } = Foo { x: 3 };
+   |         ^^^^^^^^^^^^^ help: add `mut` to each binding: `Foo { mut x }`
+   |
+   = note: `mut` may be followed by `variable` and `variable @ pattern`
+
+error: `mut` on a binding may not be repeated
+  --> $DIR/mut-patterns.rs:28:13
+   |
+LL |     let mut mut yield(become, await) = r#yield(0, 0);
+   |             ^^^ help: remove the additional `mut`s
+
+error: expected identifier, found reserved keyword `yield`
+  --> $DIR/mut-patterns.rs:28:17
+   |
+LL |     let mut mut yield(become, await) = r#yield(0, 0);
+   |                 ^^^^^ expected identifier, found reserved keyword
+   |
+help: escape `yield` to use it as an identifier
+   |
+LL |     let mut mut r#yield(become, await) = r#yield(0, 0);
+   |                 ++
+
+error: expected identifier, found reserved keyword `become`
+  --> $DIR/mut-patterns.rs:28:23
+   |
+LL |     let mut mut yield(become, await) = r#yield(0, 0);
+   |                       ^^^^^^ expected identifier, found reserved keyword
+   |
+help: escape `become` to use it as an identifier
+   |
+LL |     let mut mut yield(r#become, await) = r#yield(0, 0);
+   |                       ++
+
+error: expected identifier, found keyword `await`
+  --> $DIR/mut-patterns.rs:28:31
+   |
+LL |     let mut mut yield(become, await) = r#yield(0, 0);
+   |                               ^^^^^ expected identifier, found keyword
+   |
+help: escape `await` to use it as an identifier
+   |
+LL |     let mut mut yield(become, r#await) = r#yield(0, 0);
+   |                               ++
+
+error: `mut` must be attached to each individual binding
+  --> $DIR/mut-patterns.rs:28:9
+   |
+LL |     let mut mut yield(become, await) = r#yield(0, 0);
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: add `mut` to each binding: `r#yield(mut r#become, mut r#await)`
+   |
+   = note: `mut` may be followed by `variable` and `variable @ pattern`
+
+error: `mut` must be attached to each individual binding
+  --> $DIR/mut-patterns.rs:37:9
+   |
+LL |     let mut W(mut a, W(b, W(ref c, W(d, B { box f }))))
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: add `mut` to each binding: `W(mut a, W(mut b, W(ref c, W(mut d, B { box mut f }))))`
+   |
+   = note: `mut` may be followed by `variable` and `variable @ pattern`
+
+error: expected identifier, found `x`
+  --> $DIR/mut-patterns.rs:44:21
+   |
+LL |             let mut $p = 0;
+   |                     ^^ expected identifier
+...
+LL |     foo!(x);
+   |     ------- in this macro invocation
+   |
+   = note: this error originates in the macro `foo` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: aborting due to 13 previous errors
+
diff --git a/tests/ui/parser/nested-bad-turbofish.rs b/tests/ui/parser/nested-bad-turbofish.rs
new file mode 100644
index 000000000..02099fde2
--- /dev/null
+++ b/tests/ui/parser/nested-bad-turbofish.rs
@@ -0,0 +1,3 @@
+fn main() {
+    foo<<S as T>::V>(); //~ ERROR
+}
diff --git a/tests/ui/parser/nested-bad-turbofish.stderr b/tests/ui/parser/nested-bad-turbofish.stderr
new file mode 100644
index 000000000..d82fa80e5
--- /dev/null
+++ b/tests/ui/parser/nested-bad-turbofish.stderr
@@ -0,0 +1,11 @@
+error: comparison operators cannot be chained
+  --> $DIR/nested-bad-turbofish.rs:2:16
+   |
+LL |     foo<<S as T>::V>();
+   |                ^   ^
+   |
+   = help: use `::<...>` instead of `<...>` to specify lifetime, type, or const arguments
+   = help: or use `(...)` if you meant to specify fn arguments
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/nested-missing-closing-angle-bracket.rs b/tests/ui/parser/nested-missing-closing-angle-bracket.rs
new file mode 100644
index 000000000..84ffdd176
--- /dev/null
+++ b/tests/ui/parser/nested-missing-closing-angle-bracket.rs
@@ -0,0 +1,4 @@
+fn main() {
+  let v : Vec::<Vec<(u32,_,_)> = vec![vec![]];
+    //~^ ERROR: expected one of
+}
diff --git a/tests/ui/parser/nested-missing-closing-angle-bracket.stderr b/tests/ui/parser/nested-missing-closing-angle-bracket.stderr
new file mode 100644
index 000000000..b85bc0256
--- /dev/null
+++ b/tests/ui/parser/nested-missing-closing-angle-bracket.stderr
@@ -0,0 +1,8 @@
+error: expected one of `,` or `>`, found `;`
+  --> $DIR/nested-missing-closing-angle-bracket.rs:2:46
+   |
+LL |   let v : Vec::<Vec<(u32,_,_)> = vec![vec![]];
+   |       - while parsing the type for `v`       ^ expected one of `,` or `>`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/new-unicode-escapes-1.rs b/tests/ui/parser/new-unicode-escapes-1.rs
new file mode 100644
index 000000000..d6a54660e
--- /dev/null
+++ b/tests/ui/parser/new-unicode-escapes-1.rs
@@ -0,0 +1,3 @@
+pub fn main() {
+    let s = "\u{2603"; //~ ERROR unterminated unicode escape
+}
diff --git a/tests/ui/parser/new-unicode-escapes-1.stderr b/tests/ui/parser/new-unicode-escapes-1.stderr
new file mode 100644
index 000000000..d133e46b4
--- /dev/null
+++ b/tests/ui/parser/new-unicode-escapes-1.stderr
@@ -0,0 +1,13 @@
+error: unterminated unicode escape
+  --> $DIR/new-unicode-escapes-1.rs:2:14
+   |
+LL |     let s = "\u{2603";
+   |              ^^^^^^^ missing a closing `}`
+   |
+help: terminate the unicode escape
+   |
+LL |     let s = "\u{2603}";
+   |                     +
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/new-unicode-escapes-2.rs b/tests/ui/parser/new-unicode-escapes-2.rs
new file mode 100644
index 000000000..cbb614c19
--- /dev/null
+++ b/tests/ui/parser/new-unicode-escapes-2.rs
@@ -0,0 +1,3 @@
+pub fn main() {
+    let s = "\u{260311111111}"; //~ ERROR overlong unicode escape
+}
diff --git a/tests/ui/parser/new-unicode-escapes-2.stderr b/tests/ui/parser/new-unicode-escapes-2.stderr
new file mode 100644
index 000000000..2f3f8c0f9
--- /dev/null
+++ b/tests/ui/parser/new-unicode-escapes-2.stderr
@@ -0,0 +1,8 @@
+error: overlong unicode escape
+  --> $DIR/new-unicode-escapes-2.rs:2:14
+   |
+LL |     let s = "\u{260311111111}";
+   |              ^^^^^^^^^^^^^^^^ must have at most 6 hex digits
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/new-unicode-escapes-3.rs b/tests/ui/parser/new-unicode-escapes-3.rs
new file mode 100644
index 000000000..295ab08c0
--- /dev/null
+++ b/tests/ui/parser/new-unicode-escapes-3.rs
@@ -0,0 +1,4 @@
+pub fn main() {
+    let s1 = "\u{d805}"; //~ ERROR invalid unicode character escape
+    let s2 = "\u{ffffff}"; //~ ERROR invalid unicode character escape
+}
diff --git a/tests/ui/parser/new-unicode-escapes-3.stderr b/tests/ui/parser/new-unicode-escapes-3.stderr
new file mode 100644
index 000000000..f5a0f8fc7
--- /dev/null
+++ b/tests/ui/parser/new-unicode-escapes-3.stderr
@@ -0,0 +1,18 @@
+error: invalid unicode character escape
+  --> $DIR/new-unicode-escapes-3.rs:2:15
+   |
+LL |     let s1 = "\u{d805}";
+   |               ^^^^^^^^ invalid escape
+   |
+   = help: unicode escape must not be a surrogate
+
+error: invalid unicode character escape
+  --> $DIR/new-unicode-escapes-3.rs:3:15
+   |
+LL |     let s2 = "\u{ffffff}";
+   |               ^^^^^^^^^^ invalid escape
+   |
+   = help: unicode escape must be at most 10FFFF
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/new-unicode-escapes-4.rs b/tests/ui/parser/new-unicode-escapes-4.rs
new file mode 100644
index 000000000..79882713e
--- /dev/null
+++ b/tests/ui/parser/new-unicode-escapes-4.rs
@@ -0,0 +1,4 @@
+pub fn main() {
+    let s = "\u{lol}";
+     //~^ ERROR invalid character in unicode escape: `l`
+}
diff --git a/tests/ui/parser/new-unicode-escapes-4.stderr b/tests/ui/parser/new-unicode-escapes-4.stderr
new file mode 100644
index 000000000..514591af1
--- /dev/null
+++ b/tests/ui/parser/new-unicode-escapes-4.stderr
@@ -0,0 +1,8 @@
+error: invalid character in unicode escape: `l`
+  --> $DIR/new-unicode-escapes-4.rs:2:17
+   |
+LL |     let s = "\u{lol}";
+   |                 ^ invalid character in unicode escape
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/no-binary-float-literal.rs b/tests/ui/parser/no-binary-float-literal.rs
new file mode 100644
index 000000000..e07ff6518
--- /dev/null
+++ b/tests/ui/parser/no-binary-float-literal.rs
@@ -0,0 +1,8 @@
+fn main() {
+    0b101010f64;
+    //~^ ERROR binary float literal is not supported
+    0b101.010;
+    //~^ ERROR binary float literal is not supported
+    0b101p4f64;
+    //~^ ERROR invalid suffix `p4f64` for number literal
+}
diff --git a/tests/ui/parser/no-binary-float-literal.stderr b/tests/ui/parser/no-binary-float-literal.stderr
new file mode 100644
index 000000000..cfd448684
--- /dev/null
+++ b/tests/ui/parser/no-binary-float-literal.stderr
@@ -0,0 +1,22 @@
+error: binary float literal is not supported
+  --> $DIR/no-binary-float-literal.rs:4:5
+   |
+LL |     0b101.010;
+   |     ^^^^^^^^^
+
+error: binary float literal is not supported
+  --> $DIR/no-binary-float-literal.rs:2:5
+   |
+LL |     0b101010f64;
+   |     ^^^^^^^^^^^ not supported
+
+error: invalid suffix `p4f64` for number literal
+  --> $DIR/no-binary-float-literal.rs:6:5
+   |
+LL |     0b101p4f64;
+   |     ^^^^^^^^^^ invalid suffix `p4f64`
+   |
+   = help: the suffix must be one of the numeric types (`u32`, `isize`, `f32`, etc.)
+
+error: aborting due to 3 previous errors
+
diff --git a/tests/ui/parser/no-const-fn-in-extern-block.rs b/tests/ui/parser/no-const-fn-in-extern-block.rs
new file mode 100644
index 000000000..1993124ed
--- /dev/null
+++ b/tests/ui/parser/no-const-fn-in-extern-block.rs
@@ -0,0 +1,8 @@
+extern "C" {
+    const fn foo();
+    //~^ ERROR functions in `extern` blocks cannot have qualifiers
+    const unsafe fn bar();
+    //~^ ERROR functions in `extern` blocks cannot have qualifiers
+}
+
+fn main() {}
diff --git a/tests/ui/parser/no-const-fn-in-extern-block.stderr b/tests/ui/parser/no-const-fn-in-extern-block.stderr
new file mode 100644
index 000000000..4ac0e2655
--- /dev/null
+++ b/tests/ui/parser/no-const-fn-in-extern-block.stderr
@@ -0,0 +1,29 @@
+error: functions in `extern` blocks cannot have qualifiers
+  --> $DIR/no-const-fn-in-extern-block.rs:2:14
+   |
+LL | extern "C" {
+   | ---------- in this `extern` block
+LL |     const fn foo();
+   |              ^^^
+   |
+help: remove the qualifiers
+   |
+LL |     fn foo();
+   |     ~~
+
+error: functions in `extern` blocks cannot have qualifiers
+  --> $DIR/no-const-fn-in-extern-block.rs:4:21
+   |
+LL | extern "C" {
+   | ---------- in this `extern` block
+...
+LL |     const unsafe fn bar();
+   |                     ^^^
+   |
+help: remove the qualifiers
+   |
+LL |     fn bar();
+   |     ~~
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/no-hex-float-literal.rs b/tests/ui/parser/no-hex-float-literal.rs
new file mode 100644
index 000000000..bf11dee08
--- /dev/null
+++ b/tests/ui/parser/no-hex-float-literal.rs
@@ -0,0 +1,9 @@
+fn main() {
+    0xABC.Df;
+    //~^ ERROR `{integer}` is a primitive type and therefore doesn't have fields
+    0x567.89;
+    //~^ ERROR hexadecimal float literal is not supported
+    0xDEAD.BEEFp-2f;
+    //~^ ERROR invalid suffix `f` for float literal
+    //~| ERROR `{integer}` is a primitive type and therefore doesn't have fields
+}
diff --git a/tests/ui/parser/no-hex-float-literal.stderr b/tests/ui/parser/no-hex-float-literal.stderr
new file mode 100644
index 000000000..258ab06d5
--- /dev/null
+++ b/tests/ui/parser/no-hex-float-literal.stderr
@@ -0,0 +1,29 @@
+error: hexadecimal float literal is not supported
+  --> $DIR/no-hex-float-literal.rs:4:5
+   |
+LL |     0x567.89;
+   |     ^^^^^^^^
+
+error: invalid suffix `f` for float literal
+  --> $DIR/no-hex-float-literal.rs:6:18
+   |
+LL |     0xDEAD.BEEFp-2f;
+   |                  ^^ invalid suffix `f`
+   |
+   = help: valid suffixes are `f32` and `f64`
+
+error[E0610]: `{integer}` is a primitive type and therefore doesn't have fields
+  --> $DIR/no-hex-float-literal.rs:2:11
+   |
+LL |     0xABC.Df;
+   |           ^^
+
+error[E0610]: `{integer}` is a primitive type and therefore doesn't have fields
+  --> $DIR/no-hex-float-literal.rs:6:12
+   |
+LL |     0xDEAD.BEEFp-2f;
+   |            ^^^^^
+
+error: aborting due to 4 previous errors
+
+For more information about this error, try `rustc --explain E0610`.
diff --git a/tests/ui/parser/no-unsafe-self.rs b/tests/ui/parser/no-unsafe-self.rs
new file mode 100644
index 000000000..d1cd8ad53
--- /dev/null
+++ b/tests/ui/parser/no-unsafe-self.rs
@@ -0,0 +1,14 @@
+trait A {
+    fn foo(*mut self); //~ ERROR cannot pass `self` by raw pointer
+    fn baz(*const self); //~ ERROR cannot pass `self` by raw pointer
+    fn bar(*self); //~ ERROR cannot pass `self` by raw pointer
+}
+
+struct X;
+impl A for X {
+    fn foo(*mut self) { } //~ ERROR cannot pass `self` by raw pointer
+    fn baz(*const self) { } //~ ERROR cannot pass `self` by raw pointer
+    fn bar(*self) { } //~ ERROR cannot pass `self` by raw pointer
+}
+
+fn main() { }
diff --git a/tests/ui/parser/no-unsafe-self.stderr b/tests/ui/parser/no-unsafe-self.stderr
new file mode 100644
index 000000000..23323945e
--- /dev/null
+++ b/tests/ui/parser/no-unsafe-self.stderr
@@ -0,0 +1,38 @@
+error: cannot pass `self` by raw pointer
+  --> $DIR/no-unsafe-self.rs:2:17
+   |
+LL |     fn foo(*mut self);
+   |                 ^^^^ cannot pass `self` by raw pointer
+
+error: cannot pass `self` by raw pointer
+  --> $DIR/no-unsafe-self.rs:3:19
+   |
+LL |     fn baz(*const self);
+   |                   ^^^^ cannot pass `self` by raw pointer
+
+error: cannot pass `self` by raw pointer
+  --> $DIR/no-unsafe-self.rs:4:13
+   |
+LL |     fn bar(*self);
+   |             ^^^^ cannot pass `self` by raw pointer
+
+error: cannot pass `self` by raw pointer
+  --> $DIR/no-unsafe-self.rs:9:17
+   |
+LL |     fn foo(*mut self) { }
+   |                 ^^^^ cannot pass `self` by raw pointer
+
+error: cannot pass `self` by raw pointer
+  --> $DIR/no-unsafe-self.rs:10:19
+   |
+LL |     fn baz(*const self) { }
+   |                   ^^^^ cannot pass `self` by raw pointer
+
+error: cannot pass `self` by raw pointer
+  --> $DIR/no-unsafe-self.rs:11:13
+   |
+LL |     fn bar(*self) { }
+   |             ^^^^ cannot pass `self` by raw pointer
+
+error: aborting due to 6 previous errors
+
diff --git a/tests/ui/parser/not-a-pred.rs b/tests/ui/parser/not-a-pred.rs
new file mode 100644
index 000000000..5518b554d
--- /dev/null
+++ b/tests/ui/parser/not-a-pred.rs
@@ -0,0 +1,15 @@
+fn f(a: isize, b: isize) : lt(a, b) { }
+//~^ ERROR return types are denoted using `->`
+//~| ERROR expected type, found function `lt` [E0573]
+//~| ERROR expected type, found local variable `a` [E0573]
+//~| ERROR expected type, found local variable `b` [E0573]
+
+fn lt(a: isize, b: isize) { }
+
+fn main() {
+    let a: isize = 10;
+    let b: isize = 23;
+    check (lt(a, b));
+    //~^ ERROR cannot find function `check` in this scope [E0425]
+    f(a, b);
+}
diff --git a/tests/ui/parser/not-a-pred.stderr b/tests/ui/parser/not-a-pred.stderr
new file mode 100644
index 000000000..bcc64a687
--- /dev/null
+++ b/tests/ui/parser/not-a-pred.stderr
@@ -0,0 +1,34 @@
+error: return types are denoted using `->`
+  --> $DIR/not-a-pred.rs:1:26
+   |
+LL | fn f(a: isize, b: isize) : lt(a, b) { }
+   |                          ^ help: use `->` instead
+
+error[E0573]: expected type, found function `lt`
+  --> $DIR/not-a-pred.rs:1:28
+   |
+LL | fn f(a: isize, b: isize) : lt(a, b) { }
+   |                            ^^^^^^^^ not a type
+
+error[E0573]: expected type, found local variable `a`
+  --> $DIR/not-a-pred.rs:1:31
+   |
+LL | fn f(a: isize, b: isize) : lt(a, b) { }
+   |                               ^ not a type
+
+error[E0573]: expected type, found local variable `b`
+  --> $DIR/not-a-pred.rs:1:34
+   |
+LL | fn f(a: isize, b: isize) : lt(a, b) { }
+   |                                  ^ not a type
+
+error[E0425]: cannot find function `check` in this scope
+  --> $DIR/not-a-pred.rs:12:5
+   |
+LL |     check (lt(a, b));
+   |     ^^^^^ not found in this scope
+
+error: aborting due to 5 previous errors
+
+Some errors have detailed explanations: E0425, E0573.
+For more information about an error, try `rustc --explain E0425`.
diff --git a/tests/ui/parser/nt-parsing-has-recovery.rs b/tests/ui/parser/nt-parsing-has-recovery.rs
new file mode 100644
index 000000000..ccbeb398a
--- /dev/null
+++ b/tests/ui/parser/nt-parsing-has-recovery.rs
@@ -0,0 +1,10 @@
+macro_rules! foo {
+    ($e:expr) => {}
+}
+
+foo!(1 + @); //~ ERROR expected expression, found `@`
+foo!(1 + @); //~ ERROR expected expression, found `@`
+
+fn main() {
+    let _recovery_witness: () = 0; //~ ERROR mismatched types
+}
diff --git a/tests/ui/parser/nt-parsing-has-recovery.stderr b/tests/ui/parser/nt-parsing-has-recovery.stderr
new file mode 100644
index 000000000..263c4ad53
--- /dev/null
+++ b/tests/ui/parser/nt-parsing-has-recovery.stderr
@@ -0,0 +1,29 @@
+error: expected expression, found `@`
+  --> $DIR/nt-parsing-has-recovery.rs:5:10
+   |
+LL |     ($e:expr) => {}
+   |      ------- while parsing argument for this `expr` macro fragment
+...
+LL | foo!(1 + @);
+   |          ^ expected expression
+
+error: expected expression, found `@`
+  --> $DIR/nt-parsing-has-recovery.rs:6:10
+   |
+LL |     ($e:expr) => {}
+   |      ------- while parsing argument for this `expr` macro fragment
+...
+LL | foo!(1 + @);
+   |          ^ expected expression
+
+error[E0308]: mismatched types
+  --> $DIR/nt-parsing-has-recovery.rs:9:33
+   |
+LL |     let _recovery_witness: () = 0;
+   |                            --   ^ expected `()`, found integer
+   |                            |
+   |                            expected due to this
+
+error: aborting due to 3 previous errors
+
+For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/parser/numeric-lifetime.rs b/tests/ui/parser/numeric-lifetime.rs
new file mode 100644
index 000000000..2d82354c6
--- /dev/null
+++ b/tests/ui/parser/numeric-lifetime.rs
@@ -0,0 +1,8 @@
+struct S<'1> { s: &'1 usize }
+//~^ ERROR lifetimes cannot start with a number
+//~| ERROR lifetimes cannot start with a number
+fn main() {
+    // verify that the parse error doesn't stop type checking
+    let x: usize = "";
+    //~^ ERROR mismatched types
+}
diff --git a/tests/ui/parser/numeric-lifetime.stderr b/tests/ui/parser/numeric-lifetime.stderr
new file mode 100644
index 000000000..7c1bcb726
--- /dev/null
+++ b/tests/ui/parser/numeric-lifetime.stderr
@@ -0,0 +1,23 @@
+error[E0308]: mismatched types
+  --> $DIR/numeric-lifetime.rs:6:20
+   |
+LL |     let x: usize = "";
+   |            -----   ^^ expected `usize`, found `&str`
+   |            |
+   |            expected due to this
+
+error: lifetimes cannot start with a number
+  --> $DIR/numeric-lifetime.rs:1:10
+   |
+LL | struct S<'1> { s: &'1 usize }
+   |          ^^
+
+error: lifetimes cannot start with a number
+  --> $DIR/numeric-lifetime.rs:1:20
+   |
+LL | struct S<'1> { s: &'1 usize }
+   |                    ^^
+
+error: aborting due to 3 previous errors
+
+For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/parser/obsolete-syntax-impl-for-dotdot.rs b/tests/ui/parser/obsolete-syntax-impl-for-dotdot.rs
new file mode 100644
index 000000000..e928f09aa
--- /dev/null
+++ b/tests/ui/parser/obsolete-syntax-impl-for-dotdot.rs
@@ -0,0 +1,9 @@
+trait Trait1 {}
+trait Trait2 {}
+
+#[cfg(not_enabled)]
+impl Trait1 for .. {}
+
+impl Trait2 for .. {} //~ ERROR `impl Trait for .. {}` is an obsolete syntax
+
+fn main() {}
diff --git a/tests/ui/parser/obsolete-syntax-impl-for-dotdot.stderr b/tests/ui/parser/obsolete-syntax-impl-for-dotdot.stderr
new file mode 100644
index 000000000..b7108ced0
--- /dev/null
+++ b/tests/ui/parser/obsolete-syntax-impl-for-dotdot.stderr
@@ -0,0 +1,10 @@
+error: `impl Trait for .. {}` is an obsolete syntax
+  --> $DIR/obsolete-syntax-impl-for-dotdot.rs:7:1
+   |
+LL | impl Trait2 for .. {}
+   | ^^^^^^^^^^^^^^^^^^^^^
+   |
+   = help: use `auto trait Trait {}` instead
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/old-suffixes-are-really-forbidden.rs b/tests/ui/parser/old-suffixes-are-really-forbidden.rs
new file mode 100644
index 000000000..eea95b7d6
--- /dev/null
+++ b/tests/ui/parser/old-suffixes-are-really-forbidden.rs
@@ -0,0 +1,4 @@
+fn main() {
+    let a = 1_is; //~ ERROR invalid suffix
+    let b = 2_us; //~ ERROR invalid suffix
+}
diff --git a/tests/ui/parser/old-suffixes-are-really-forbidden.stderr b/tests/ui/parser/old-suffixes-are-really-forbidden.stderr
new file mode 100644
index 000000000..fb309793b
--- /dev/null
+++ b/tests/ui/parser/old-suffixes-are-really-forbidden.stderr
@@ -0,0 +1,18 @@
+error: invalid suffix `is` for number literal
+  --> $DIR/old-suffixes-are-really-forbidden.rs:2:13
+   |
+LL |     let a = 1_is;
+   |             ^^^^ invalid suffix `is`
+   |
+   = help: the suffix must be one of the numeric types (`u32`, `isize`, `f32`, etc.)
+
+error: invalid suffix `us` for number literal
+  --> $DIR/old-suffixes-are-really-forbidden.rs:3:13
+   |
+LL |     let b = 2_us;
+   |             ^^^^ invalid suffix `us`
+   |
+   = help: the suffix must be one of the numeric types (`u32`, `isize`, `f32`, etc.)
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/omitted-arg-in-item-fn.rs b/tests/ui/parser/omitted-arg-in-item-fn.rs
new file mode 100644
index 000000000..49cbc4d6b
--- /dev/null
+++ b/tests/ui/parser/omitted-arg-in-item-fn.rs
@@ -0,0 +1,4 @@
+fn foo(x) { //~ ERROR expected one of `:`, `@`, or `|`, found `)`
+}
+
+fn main() {}
diff --git a/tests/ui/parser/omitted-arg-in-item-fn.stderr b/tests/ui/parser/omitted-arg-in-item-fn.stderr
new file mode 100644
index 000000000..ce2eab051
--- /dev/null
+++ b/tests/ui/parser/omitted-arg-in-item-fn.stderr
@@ -0,0 +1,22 @@
+error: expected one of `:`, `@`, or `|`, found `)`
+  --> $DIR/omitted-arg-in-item-fn.rs:1:9
+   |
+LL | fn foo(x) {
+   |         ^ expected one of `:`, `@`, or `|`
+   |
+   = note: anonymous parameters are removed in the 2018 edition (see RFC 1685)
+help: if this is a `self` type, give it a parameter name
+   |
+LL | fn foo(self: x) {
+   |        +++++
+help: if this is a parameter name, give it a type
+   |
+LL | fn foo(x: TypeName) {
+   |         ++++++++++
+help: if this is a type, explicitly ignore the parameter name
+   |
+LL | fn foo(_: x) {
+   |        ++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/operator-associativity.rs b/tests/ui/parser/operator-associativity.rs
new file mode 100644
index 000000000..4f40c80bc
--- /dev/null
+++ b/tests/ui/parser/operator-associativity.rs
@@ -0,0 +1,4 @@
+// run-pass
+// Testcase for issue #130, operator associativity.
+
+pub fn main() { assert_eq!(3 * 5 / 2, 7); }
diff --git a/tests/ui/parser/paamayim-nekudotayim.rs b/tests/ui/parser/paamayim-nekudotayim.rs
new file mode 100644
index 000000000..cb151d652
--- /dev/null
+++ b/tests/ui/parser/paamayim-nekudotayim.rs
@@ -0,0 +1,5 @@
+// http://phpsadness.com/sad/1
+
+fn main() {
+    ::; //~ ERROR expected identifier, found `;`
+}
diff --git a/tests/ui/parser/paamayim-nekudotayim.stderr b/tests/ui/parser/paamayim-nekudotayim.stderr
new file mode 100644
index 000000000..6ceba07f4
--- /dev/null
+++ b/tests/ui/parser/paamayim-nekudotayim.stderr
@@ -0,0 +1,8 @@
+error: expected identifier, found `;`
+  --> $DIR/paamayim-nekudotayim.rs:4:7
+   |
+LL |     ::;
+   |       ^ expected identifier
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/parse-assoc-type-lt.rs b/tests/ui/parser/parse-assoc-type-lt.rs
new file mode 100644
index 000000000..d3fe6079a
--- /dev/null
+++ b/tests/ui/parser/parse-assoc-type-lt.rs
@@ -0,0 +1,9 @@
+// run-pass
+// pretty-expanded FIXME #23616
+
+trait Foo {
+    type T;
+    fn foo() -> Box<<Self as Foo>::T>;
+}
+
+fn main() {}
diff --git a/tests/ui/parser/parse-error-correct.rs b/tests/ui/parser/parse-error-correct.rs
new file mode 100644
index 000000000..13759a235
--- /dev/null
+++ b/tests/ui/parser/parse-error-correct.rs
@@ -0,0 +1,10 @@
+// Test that the parser is error correcting missing idents. Despite a parsing
+// error (or two), we still run type checking (and don't get extra errors there).
+
+fn main() {
+    let y = 42;
+    let x = y.;  //~ ERROR unexpected token
+    let x = y.();  //~ ERROR unexpected token
+                   //~^ ERROR expected function, found `{integer}`
+    let x = y.foo; //~ ERROR `{integer}` is a primitive type and therefore doesn't have fields [E061
+}
diff --git a/tests/ui/parser/parse-error-correct.stderr b/tests/ui/parser/parse-error-correct.stderr
new file mode 100644
index 000000000..691df9126
--- /dev/null
+++ b/tests/ui/parser/parse-error-correct.stderr
@@ -0,0 +1,33 @@
+error: unexpected token: `;`
+  --> $DIR/parse-error-correct.rs:6:15
+   |
+LL |     let x = y.;
+   |               ^
+
+error: unexpected token: `(`
+  --> $DIR/parse-error-correct.rs:7:15
+   |
+LL |     let x = y.();
+   |               ^
+
+error[E0618]: expected function, found `{integer}`
+  --> $DIR/parse-error-correct.rs:7:13
+   |
+LL |     let y = 42;
+   |         - `y` has type `{integer}`
+LL |     let x = y.;
+LL |     let x = y.();
+   |             ^---
+   |             |
+   |             call expression requires function
+
+error[E0610]: `{integer}` is a primitive type and therefore doesn't have fields
+  --> $DIR/parse-error-correct.rs:9:15
+   |
+LL |     let x = y.foo;
+   |               ^^^
+
+error: aborting due to 4 previous errors
+
+Some errors have detailed explanations: E0610, E0618.
+For more information about an error, try `rustc --explain E0610`.
diff --git a/tests/ui/parser/parse-panic.rs b/tests/ui/parser/parse-panic.rs
new file mode 100644
index 000000000..aeb2ba4fa
--- /dev/null
+++ b/tests/ui/parser/parse-panic.rs
@@ -0,0 +1,8 @@
+// run-pass
+
+#![allow(dead_code)]
+#![allow(unreachable_code)]
+
+fn dont_call_me() { panic!(); println!("{}", 1); }
+
+pub fn main() { }
diff --git a/tests/ui/parser/parser-recovery-1.rs b/tests/ui/parser/parser-recovery-1.rs
new file mode 100644
index 000000000..7e26b4f2b
--- /dev/null
+++ b/tests/ui/parser/parser-recovery-1.rs
@@ -0,0 +1,13 @@
+// Test that we can recover from missing braces in the parser.
+
+trait Foo {
+    fn bar() {
+        let x = foo();
+        //~^ ERROR cannot find function `foo` in this scope
+}
+
+fn main() {
+    let x = y.;
+    //~^ ERROR unexpected token
+    //~| ERROR cannot find value `y` in this scope
+} //~ ERROR this file contains an unclosed delimiter
diff --git a/tests/ui/parser/parser-recovery-1.stderr b/tests/ui/parser/parser-recovery-1.stderr
new file mode 100644
index 000000000..0cb771ea3
--- /dev/null
+++ b/tests/ui/parser/parser-recovery-1.stderr
@@ -0,0 +1,35 @@
+error: this file contains an unclosed delimiter
+  --> $DIR/parser-recovery-1.rs:13:54
+   |
+LL | trait Foo {
+   |           - unclosed delimiter
+LL |     fn bar() {
+   |              - this delimiter might not be properly closed...
+...
+LL | }
+   | - ...as it matches this but it has different indentation
+...
+LL | }
+   |                                                      ^
+
+error: unexpected token: `;`
+  --> $DIR/parser-recovery-1.rs:10:15
+   |
+LL |     let x = y.;
+   |               ^
+
+error[E0425]: cannot find value `y` in this scope
+  --> $DIR/parser-recovery-1.rs:10:13
+   |
+LL |     let x = y.;
+   |             ^ not found in this scope
+
+error[E0425]: cannot find function `foo` in this scope
+  --> $DIR/parser-recovery-1.rs:5:17
+   |
+LL |         let x = foo();
+   |                 ^^^ not found in this scope
+
+error: aborting due to 4 previous errors
+
+For more information about this error, try `rustc --explain E0425`.
diff --git a/tests/ui/parser/parser-recovery-2.rs b/tests/ui/parser/parser-recovery-2.rs
new file mode 100644
index 000000000..48b22afff
--- /dev/null
+++ b/tests/ui/parser/parser-recovery-2.rs
@@ -0,0 +1,12 @@
+// Test that we can recover from mismatched braces in the parser.
+
+trait Foo {
+    fn bar() {
+        let x = foo(); //~ ERROR cannot find function `foo` in this scope
+    ) //~ ERROR mismatched closing delimiter: `)`
+}
+
+fn main() {
+    let x = y.;  //~ ERROR unexpected token
+                 //~^ ERROR cannot find value `y` in this scope
+}
diff --git a/tests/ui/parser/parser-recovery-2.stderr b/tests/ui/parser/parser-recovery-2.stderr
new file mode 100644
index 000000000..8829cf4c1
--- /dev/null
+++ b/tests/ui/parser/parser-recovery-2.stderr
@@ -0,0 +1,30 @@
+error: unexpected token: `;`
+  --> $DIR/parser-recovery-2.rs:10:15
+   |
+LL |     let x = y.;
+   |               ^
+
+error: mismatched closing delimiter: `)`
+  --> $DIR/parser-recovery-2.rs:4:14
+   |
+LL |     fn bar() {
+   |              ^ unclosed delimiter
+LL |         let x = foo();
+LL |     )
+   |     ^ mismatched closing delimiter
+
+error[E0425]: cannot find value `y` in this scope
+  --> $DIR/parser-recovery-2.rs:10:13
+   |
+LL |     let x = y.;
+   |             ^ not found in this scope
+
+error[E0425]: cannot find function `foo` in this scope
+  --> $DIR/parser-recovery-2.rs:5:17
+   |
+LL |         let x = foo();
+   |                 ^^^ not found in this scope
+
+error: aborting due to 4 previous errors
+
+For more information about this error, try `rustc --explain E0425`.
diff --git a/tests/ui/parser/parser-unicode-whitespace.rs b/tests/ui/parser/parser-unicode-whitespace.rs
new file mode 100644
index 000000000..555cd68c3
--- /dev/null
+++ b/tests/ui/parser/parser-unicode-whitespace.rs
@@ -0,0 +1,12 @@
+// run-pass
+// Beware editing: it has numerous whitespace characters which are important.
+// It contains one ranges from the 'PATTERN_WHITE_SPACE' property outlined in
+// https://unicode.org/Public/UNIDATA/PropList.txt
+//
+// The characters in the first expression of the assertion can be generated
+// from: "4\u{0C}+\n\t\r7\t*\u{20}2\u{85}/\u{200E}3\u{200F}*\u{2028}2\u{2029}"
+pub fn main() {
+assert_eq!(4+
+
+7   * 2…/‎3‏*
2
, 4 + 7 * 2 / 3 * 2);
+}
diff --git a/tests/ui/parser/pat-lt-bracket-1.rs b/tests/ui/parser/pat-lt-bracket-1.rs
new file mode 100644
index 000000000..2e2001434
--- /dev/null
+++ b/tests/ui/parser/pat-lt-bracket-1.rs
@@ -0,0 +1,7 @@
+fn main() {
+  match 42 {
+    x < 7 => (),
+   //~^ error: expected one of `=>`, `@`, `if`, or `|`, found `<`
+    _ => ()
+  }
+}
diff --git a/tests/ui/parser/pat-lt-bracket-1.stderr b/tests/ui/parser/pat-lt-bracket-1.stderr
new file mode 100644
index 000000000..e8ccbad66
--- /dev/null
+++ b/tests/ui/parser/pat-lt-bracket-1.stderr
@@ -0,0 +1,8 @@
+error: expected one of `=>`, `@`, `if`, or `|`, found `<`
+  --> $DIR/pat-lt-bracket-1.rs:3:7
+   |
+LL |     x < 7 => (),
+   |       ^ expected one of `=>`, `@`, `if`, or `|`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/pat-lt-bracket-2.rs b/tests/ui/parser/pat-lt-bracket-2.rs
new file mode 100644
index 000000000..3a778ed14
--- /dev/null
+++ b/tests/ui/parser/pat-lt-bracket-2.rs
@@ -0,0 +1,4 @@
+fn a(B<) {}
+   //~^ error: expected one of `:`, `@`, or `|`, found `<`
+
+fn main() {}
diff --git a/tests/ui/parser/pat-lt-bracket-2.stderr b/tests/ui/parser/pat-lt-bracket-2.stderr
new file mode 100644
index 000000000..c78f96e1a
--- /dev/null
+++ b/tests/ui/parser/pat-lt-bracket-2.stderr
@@ -0,0 +1,18 @@
+error: expected one of `:`, `@`, or `|`, found `<`
+  --> $DIR/pat-lt-bracket-2.rs:1:7
+   |
+LL | fn a(B<) {}
+   |       ^ expected one of `:`, `@`, or `|`
+   |
+   = note: anonymous parameters are removed in the 2018 edition (see RFC 1685)
+help: if this is a `self` type, give it a parameter name
+   |
+LL | fn a(self: B<) {}
+   |      +++++
+help: if this is a type, explicitly ignore the parameter name
+   |
+LL | fn a(_: B<) {}
+   |      ++
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/pat-lt-bracket-3.rs b/tests/ui/parser/pat-lt-bracket-3.rs
new file mode 100644
index 000000000..a8bdfd3fa
--- /dev/null
+++ b/tests/ui/parser/pat-lt-bracket-3.rs
@@ -0,0 +1,14 @@
+struct Foo<T>(T, T);
+
+impl<T> Foo<T> {
+    fn foo(&self) {
+        match *self {
+            Foo<T>(x, y) => {
+            //~^ error: expected one of `=>`, `@`, `if`, or `|`, found `<`
+              println!("Goodbye, World!")
+            }
+        }
+    }
+}
+
+fn main() {}
diff --git a/tests/ui/parser/pat-lt-bracket-3.stderr b/tests/ui/parser/pat-lt-bracket-3.stderr
new file mode 100644
index 000000000..bacf868e3
--- /dev/null
+++ b/tests/ui/parser/pat-lt-bracket-3.stderr
@@ -0,0 +1,8 @@
+error: expected one of `=>`, `@`, `if`, or `|`, found `<`
+  --> $DIR/pat-lt-bracket-3.rs:6:16
+   |
+LL |             Foo<T>(x, y) => {
+   |                ^ expected one of `=>`, `@`, `if`, or `|`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/pat-lt-bracket-4.rs b/tests/ui/parser/pat-lt-bracket-4.rs
new file mode 100644
index 000000000..de314f6c6
--- /dev/null
+++ b/tests/ui/parser/pat-lt-bracket-4.rs
@@ -0,0 +1,11 @@
+enum BtNode {
+    Node(u32,Box<BtNode>,Box<BtNode>),
+    Leaf(u32),
+}
+
+fn main() {
+    let y = match 10 {
+        Foo<T>::A(value) => value, //~ error: expected one of `=>`, `@`, `if`, or `|`, found `<`
+        Foo<T>::B => 7,
+    };
+}
diff --git a/tests/ui/parser/pat-lt-bracket-4.stderr b/tests/ui/parser/pat-lt-bracket-4.stderr
new file mode 100644
index 000000000..911c276b9
--- /dev/null
+++ b/tests/ui/parser/pat-lt-bracket-4.stderr
@@ -0,0 +1,8 @@
+error: expected one of `=>`, `@`, `if`, or `|`, found `<`
+  --> $DIR/pat-lt-bracket-4.rs:8:12
+   |
+LL |         Foo<T>::A(value) => value,
+   |            ^ expected one of `=>`, `@`, `if`, or `|`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/pat-lt-bracket-5.rs b/tests/ui/parser/pat-lt-bracket-5.rs
new file mode 100644
index 000000000..aaece1f6b
--- /dev/null
+++ b/tests/ui/parser/pat-lt-bracket-5.rs
@@ -0,0 +1,3 @@
+fn main() {
+    let v[0] = v[1]; //~ ERROR expected one of `:`, `;`, `=`, `@`, or `|`, found `[`
+}
diff --git a/tests/ui/parser/pat-lt-bracket-5.stderr b/tests/ui/parser/pat-lt-bracket-5.stderr
new file mode 100644
index 000000000..e23674bce
--- /dev/null
+++ b/tests/ui/parser/pat-lt-bracket-5.stderr
@@ -0,0 +1,8 @@
+error: expected one of `:`, `;`, `=`, `@`, or `|`, found `[`
+  --> $DIR/pat-lt-bracket-5.rs:2:10
+   |
+LL |     let v[0] = v[1];
+   |          ^ expected one of `:`, `;`, `=`, `@`, or `|`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/pat-lt-bracket-6.rs b/tests/ui/parser/pat-lt-bracket-6.rs
new file mode 100644
index 000000000..7becffa9f
--- /dev/null
+++ b/tests/ui/parser/pat-lt-bracket-6.rs
@@ -0,0 +1,9 @@
+fn main() {
+    struct Test(&'static u8, [u8; 0]);
+    let x = Test(&0, []);
+
+    let Test(&desc[..]) = x;
+    //~^ ERROR: expected one of `)`, `,`, `@`, or `|`, found `[`
+}
+
+const RECOVERY_WITNESS: () = 0; //~ ERROR mismatched types
diff --git a/tests/ui/parser/pat-lt-bracket-6.stderr b/tests/ui/parser/pat-lt-bracket-6.stderr
new file mode 100644
index 000000000..035d0dbfe
--- /dev/null
+++ b/tests/ui/parser/pat-lt-bracket-6.stderr
@@ -0,0 +1,18 @@
+error: expected one of `)`, `,`, `@`, or `|`, found `[`
+  --> $DIR/pat-lt-bracket-6.rs:5:19
+   |
+LL |     let Test(&desc[..]) = x;
+   |                   ^
+   |                   |
+   |                   expected one of `)`, `,`, `@`, or `|`
+   |                   help: missing `,`
+
+error[E0308]: mismatched types
+  --> $DIR/pat-lt-bracket-6.rs:9:30
+   |
+LL | const RECOVERY_WITNESS: () = 0;
+   |                              ^ expected `()`, found integer
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/parser/pat-lt-bracket-7.rs b/tests/ui/parser/pat-lt-bracket-7.rs
new file mode 100644
index 000000000..327aef5ad
--- /dev/null
+++ b/tests/ui/parser/pat-lt-bracket-7.rs
@@ -0,0 +1,9 @@
+fn main() {
+    struct Thing(u8, [u8; 0]);
+    let foo = core::iter::empty();
+
+    for Thing(x[]) in foo {}
+    //~^ ERROR: expected one of `)`, `,`, `@`, or `|`, found `[`
+}
+
+const RECOVERY_WITNESS: () = 0; //~ ERROR mismatched types
diff --git a/tests/ui/parser/pat-lt-bracket-7.stderr b/tests/ui/parser/pat-lt-bracket-7.stderr
new file mode 100644
index 000000000..004dcfb2a
--- /dev/null
+++ b/tests/ui/parser/pat-lt-bracket-7.stderr
@@ -0,0 +1,18 @@
+error: expected one of `)`, `,`, `@`, or `|`, found `[`
+  --> $DIR/pat-lt-bracket-7.rs:5:16
+   |
+LL |     for Thing(x[]) in foo {}
+   |                ^
+   |                |
+   |                expected one of `)`, `,`, `@`, or `|`
+   |                help: missing `,`
+
+error[E0308]: mismatched types
+  --> $DIR/pat-lt-bracket-7.rs:9:30
+   |
+LL | const RECOVERY_WITNESS: () = 0;
+   |                              ^ expected `()`, found integer
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/parser/pat-ranges-1.rs b/tests/ui/parser/pat-ranges-1.rs
new file mode 100644
index 000000000..1dafb5a07
--- /dev/null
+++ b/tests/ui/parser/pat-ranges-1.rs
@@ -0,0 +1,5 @@
+// Parsing of range patterns
+
+fn main() {
+    let macropus!() ..= 11 = 12; //~ error: expected one of `:`, `;`, `=`, or `|`, found `..=`
+}
diff --git a/tests/ui/parser/pat-ranges-1.stderr b/tests/ui/parser/pat-ranges-1.stderr
new file mode 100644
index 000000000..b64a3ce5c
--- /dev/null
+++ b/tests/ui/parser/pat-ranges-1.stderr
@@ -0,0 +1,8 @@
+error: expected one of `:`, `;`, `=`, or `|`, found `..=`
+  --> $DIR/pat-ranges-1.rs:4:21
+   |
+LL |     let macropus!() ..= 11 = 12;
+   |                     ^^^ expected one of `:`, `;`, `=`, or `|`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/pat-ranges-2.rs b/tests/ui/parser/pat-ranges-2.rs
new file mode 100644
index 000000000..1593222ac
--- /dev/null
+++ b/tests/ui/parser/pat-ranges-2.rs
@@ -0,0 +1,5 @@
+// Parsing of range patterns
+
+fn main() {
+    let 10 ..= makropulos!() = 12; //~ error: expected one of `::`, `:`, `;`, `=`, or `|`, found `!`
+}
diff --git a/tests/ui/parser/pat-ranges-2.stderr b/tests/ui/parser/pat-ranges-2.stderr
new file mode 100644
index 000000000..1a9e33beb
--- /dev/null
+++ b/tests/ui/parser/pat-ranges-2.stderr
@@ -0,0 +1,8 @@
+error: expected one of `::`, `:`, `;`, `=`, or `|`, found `!`
+  --> $DIR/pat-ranges-2.rs:4:26
+   |
+LL |     let 10 ..= makropulos!() = 12;
+   |                          ^ expected one of `::`, `:`, `;`, `=`, or `|`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/pat-ranges-3.rs b/tests/ui/parser/pat-ranges-3.rs
new file mode 100644
index 000000000..8976dcf0d
--- /dev/null
+++ b/tests/ui/parser/pat-ranges-3.rs
@@ -0,0 +1,5 @@
+// Parsing of range patterns
+
+fn main() {
+    let 10 ..= 10 + 3 = 12; //~ expected one of `:`, `;`, `=`, or `|`, found `+`
+}
diff --git a/tests/ui/parser/pat-ranges-3.stderr b/tests/ui/parser/pat-ranges-3.stderr
new file mode 100644
index 000000000..c9787b789
--- /dev/null
+++ b/tests/ui/parser/pat-ranges-3.stderr
@@ -0,0 +1,8 @@
+error: expected one of `:`, `;`, `=`, or `|`, found `+`
+  --> $DIR/pat-ranges-3.rs:4:19
+   |
+LL |     let 10 ..= 10 + 3 = 12;
+   |                   ^ expected one of `:`, `;`, `=`, or `|`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/pat-ranges-4.rs b/tests/ui/parser/pat-ranges-4.rs
new file mode 100644
index 000000000..61188976b
--- /dev/null
+++ b/tests/ui/parser/pat-ranges-4.rs
@@ -0,0 +1,6 @@
+// Parsing of range patterns
+
+fn main() {
+    let 10 - 3 ..= 10 = 8;
+    //~^ error: expected one of `...`, `..=`, `..`, `:`, `;`, `=`, or `|`, found `-`
+}
diff --git a/tests/ui/parser/pat-ranges-4.stderr b/tests/ui/parser/pat-ranges-4.stderr
new file mode 100644
index 000000000..69084b5a4
--- /dev/null
+++ b/tests/ui/parser/pat-ranges-4.stderr
@@ -0,0 +1,8 @@
+error: expected one of `...`, `..=`, `..`, `:`, `;`, `=`, or `|`, found `-`
+  --> $DIR/pat-ranges-4.rs:4:12
+   |
+LL |     let 10 - 3 ..= 10 = 8;
+   |            ^ expected one of 7 possible tokens
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/pat-ref-enum.rs b/tests/ui/parser/pat-ref-enum.rs
new file mode 100644
index 000000000..412dd141d
--- /dev/null
+++ b/tests/ui/parser/pat-ref-enum.rs
@@ -0,0 +1,8 @@
+fn matcher(x: Option<isize>) {
+    match x {
+      ref Some(i) => {} //~ ERROR expected identifier, found enum pattern
+      None => {}
+    }
+}
+
+fn main() {}
diff --git a/tests/ui/parser/pat-ref-enum.stderr b/tests/ui/parser/pat-ref-enum.stderr
new file mode 100644
index 000000000..a3bce3372
--- /dev/null
+++ b/tests/ui/parser/pat-ref-enum.stderr
@@ -0,0 +1,8 @@
+error: expected identifier, found enum pattern
+  --> $DIR/pat-ref-enum.rs:3:11
+   |
+LL |       ref Some(i) => {}
+   |           ^^^^
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/pat-tuple-1.rs b/tests/ui/parser/pat-tuple-1.rs
new file mode 100644
index 000000000..0e49b547f
--- /dev/null
+++ b/tests/ui/parser/pat-tuple-1.rs
@@ -0,0 +1,5 @@
+fn main() {
+    match (0, 1) {
+        (, ..) => {} //~ ERROR expected pattern, found `,`
+    }
+}
diff --git a/tests/ui/parser/pat-tuple-1.stderr b/tests/ui/parser/pat-tuple-1.stderr
new file mode 100644
index 000000000..391f2c428
--- /dev/null
+++ b/tests/ui/parser/pat-tuple-1.stderr
@@ -0,0 +1,8 @@
+error: expected pattern, found `,`
+  --> $DIR/pat-tuple-1.rs:3:10
+   |
+LL |         (, ..) => {}
+   |          ^ expected pattern
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/pat-tuple-2.rs b/tests/ui/parser/pat-tuple-2.rs
new file mode 100644
index 000000000..a8f3debd3
--- /dev/null
+++ b/tests/ui/parser/pat-tuple-2.rs
@@ -0,0 +1,7 @@
+// check-pass
+
+fn main() {
+    match (0, 1, 2) {
+        (pat, ..,) => {}
+    }
+}
diff --git a/tests/ui/parser/pat-tuple-3.rs b/tests/ui/parser/pat-tuple-3.rs
new file mode 100644
index 000000000..1486ab231
--- /dev/null
+++ b/tests/ui/parser/pat-tuple-3.rs
@@ -0,0 +1,6 @@
+fn main() {
+    match (0, 1, 2) {
+        (.., pat, ..) => {}
+        //~^ ERROR `..` can only be used once per tuple pattern
+    }
+}
diff --git a/tests/ui/parser/pat-tuple-3.stderr b/tests/ui/parser/pat-tuple-3.stderr
new file mode 100644
index 000000000..9ac0611c5
--- /dev/null
+++ b/tests/ui/parser/pat-tuple-3.stderr
@@ -0,0 +1,10 @@
+error: `..` can only be used once per tuple pattern
+  --> $DIR/pat-tuple-3.rs:3:19
+   |
+LL |         (.., pat, ..) => {}
+   |          --       ^^ can only be used once per tuple pattern
+   |          |
+   |          previously used here
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/pub-method-macro.rs b/tests/ui/parser/pub-method-macro.rs
new file mode 100644
index 000000000..0183bdcf6
--- /dev/null
+++ b/tests/ui/parser/pub-method-macro.rs
@@ -0,0 +1,23 @@
+// Issue #18317
+
+mod bleh {
+    macro_rules! defn {
+        ($n:ident) => (
+            fn $n (&self) -> i32 {
+                println!("{}", stringify!($n));
+                1
+            }
+        )
+    }
+
+    #[derive(Copy, Clone)]
+    pub struct S;
+
+    impl S {
+        pub defn!(f); //~ ERROR can't qualify macro invocation with `pub`
+        //~^ HELP remove the visibility
+        //~| HELP try adjusting the macro to put `pub` inside the invocation
+    }
+}
+
+fn main() {}
diff --git a/tests/ui/parser/pub-method-macro.stderr b/tests/ui/parser/pub-method-macro.stderr
new file mode 100644
index 000000000..7c7a90926
--- /dev/null
+++ b/tests/ui/parser/pub-method-macro.stderr
@@ -0,0 +1,10 @@
+error: can't qualify macro invocation with `pub`
+  --> $DIR/pub-method-macro.rs:17:9
+   |
+LL |         pub defn!(f);
+   |         ^^^ help: remove the visibility
+   |
+   = help: try adjusting the macro to put `pub` inside the invocation
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/public-instead-of-pub-1.fixed b/tests/ui/parser/public-instead-of-pub-1.fixed
new file mode 100644
index 000000000..a4fa68ba5
--- /dev/null
+++ b/tests/ui/parser/public-instead-of-pub-1.fixed
@@ -0,0 +1,11 @@
+// Checks what happens when `public` is used instead of the correct, `pub`
+// run-rustfix
+
+pub enum Test {
+    //~^ ERROR expected one of `!` or `::`, found keyword `enum`
+    //~^^ HELP write `pub` instead of `public` to make the item public
+    A,
+    B,
+}
+
+fn main() { }
diff --git a/tests/ui/parser/public-instead-of-pub-1.rs b/tests/ui/parser/public-instead-of-pub-1.rs
new file mode 100644
index 000000000..43565c9b1
--- /dev/null
+++ b/tests/ui/parser/public-instead-of-pub-1.rs
@@ -0,0 +1,11 @@
+// Checks what happens when `public` is used instead of the correct, `pub`
+// run-rustfix
+
+public enum Test {
+    //~^ ERROR expected one of `!` or `::`, found keyword `enum`
+    //~^^ HELP write `pub` instead of `public` to make the item public
+    A,
+    B,
+}
+
+fn main() { }
diff --git a/tests/ui/parser/public-instead-of-pub-1.stderr b/tests/ui/parser/public-instead-of-pub-1.stderr
new file mode 100644
index 000000000..795a5bcf5
--- /dev/null
+++ b/tests/ui/parser/public-instead-of-pub-1.stderr
@@ -0,0 +1,13 @@
+error: expected one of `!` or `::`, found keyword `enum`
+  --> $DIR/public-instead-of-pub-1.rs:4:8
+   |
+LL | public enum Test {
+   |        ^^^^ expected one of `!` or `::`
+   |
+help: write `pub` instead of `public` to make the item public
+   |
+LL | pub enum Test {
+   | ~~~
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/public-instead-of-pub-2.rs b/tests/ui/parser/public-instead-of-pub-2.rs
new file mode 100644
index 000000000..8a43c361e
--- /dev/null
+++ b/tests/ui/parser/public-instead-of-pub-2.rs
@@ -0,0 +1,7 @@
+// Checks what happens when `public` is used instead of the correct, `pub`
+// Won't give help message for this case
+
+public let x = 1;
+//~^ ERROR expected one of `!` or `::`, found keyword `let`
+
+fn main() { }
diff --git a/tests/ui/parser/public-instead-of-pub-2.stderr b/tests/ui/parser/public-instead-of-pub-2.stderr
new file mode 100644
index 000000000..efe225656
--- /dev/null
+++ b/tests/ui/parser/public-instead-of-pub-2.stderr
@@ -0,0 +1,8 @@
+error: expected one of `!` or `::`, found keyword `let`
+  --> $DIR/public-instead-of-pub-2.rs:4:8
+   |
+LL | public let x = 1;
+   |        ^^^ expected one of `!` or `::`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/public-instead-of-pub-3.fixed b/tests/ui/parser/public-instead-of-pub-3.fixed
new file mode 100644
index 000000000..14f620f41
--- /dev/null
+++ b/tests/ui/parser/public-instead-of-pub-3.fixed
@@ -0,0 +1,9 @@
+// run-rustfix
+mod test {
+    pub const X: i32 = 123;
+    //~^ ERROR expected one of `!` or `::`, found keyword `const`
+}
+
+fn main() {
+    println!("{}", test::X);
+}
diff --git a/tests/ui/parser/public-instead-of-pub-3.rs b/tests/ui/parser/public-instead-of-pub-3.rs
new file mode 100644
index 000000000..ee27cb1a1
--- /dev/null
+++ b/tests/ui/parser/public-instead-of-pub-3.rs
@@ -0,0 +1,9 @@
+// run-rustfix
+mod test {
+    public const X: i32 = 123;
+    //~^ ERROR expected one of `!` or `::`, found keyword `const`
+}
+
+fn main() {
+    println!("{}", test::X);
+}
diff --git a/tests/ui/parser/public-instead-of-pub-3.stderr b/tests/ui/parser/public-instead-of-pub-3.stderr
new file mode 100644
index 000000000..72efae08d
--- /dev/null
+++ b/tests/ui/parser/public-instead-of-pub-3.stderr
@@ -0,0 +1,13 @@
+error: expected one of `!` or `::`, found keyword `const`
+  --> $DIR/public-instead-of-pub-3.rs:3:12
+   |
+LL |     public const X: i32 = 123;
+   |            ^^^^^ expected one of `!` or `::`
+   |
+help: write `pub` instead of `public` to make the item public
+   |
+LL |     pub const X: i32 = 123;
+   |     ~~~
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/public-instead-of-pub.fixed b/tests/ui/parser/public-instead-of-pub.fixed
new file mode 100644
index 000000000..01db60999
--- /dev/null
+++ b/tests/ui/parser/public-instead-of-pub.fixed
@@ -0,0 +1,8 @@
+// Checks what happens when `public` is used instead of the correct, `pub`
+// edition:2018
+// run-rustfix
+pub struct X;
+//~^ ERROR expected one of `!` or `::`, found keyword `struct`
+//~^^ HELP write `pub` instead of `public` to make the item public
+
+fn main() {}
diff --git a/tests/ui/parser/public-instead-of-pub.rs b/tests/ui/parser/public-instead-of-pub.rs
new file mode 100644
index 000000000..18e0fd3af
--- /dev/null
+++ b/tests/ui/parser/public-instead-of-pub.rs
@@ -0,0 +1,8 @@
+// Checks what happens when `public` is used instead of the correct, `pub`
+// edition:2018
+// run-rustfix
+public struct X;
+//~^ ERROR expected one of `!` or `::`, found keyword `struct`
+//~^^ HELP write `pub` instead of `public` to make the item public
+
+fn main() {}
diff --git a/tests/ui/parser/public-instead-of-pub.stderr b/tests/ui/parser/public-instead-of-pub.stderr
new file mode 100644
index 000000000..af875491e
--- /dev/null
+++ b/tests/ui/parser/public-instead-of-pub.stderr
@@ -0,0 +1,13 @@
+error: expected one of `!` or `::`, found keyword `struct`
+  --> $DIR/public-instead-of-pub.rs:4:8
+   |
+LL | public struct X;
+   |        ^^^^^^ expected one of `!` or `::`
+   |
+help: write `pub` instead of `public` to make the item public
+   |
+LL | pub struct X;
+   | ~~~
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/qualified-path-in-turbofish.fixed b/tests/ui/parser/qualified-path-in-turbofish.fixed
new file mode 100644
index 000000000..404d2f776
--- /dev/null
+++ b/tests/ui/parser/qualified-path-in-turbofish.fixed
@@ -0,0 +1,19 @@
+// run-rustfix
+trait T {
+    type Ty;
+}
+
+struct Impl;
+
+impl T for Impl {
+    type Ty = u32;
+}
+
+fn template<T>() -> i64 {
+    3
+}
+
+fn main() {
+    template::<<Impl as T>::Ty>();
+    //~^ ERROR found single colon before projection in qualified path
+}
diff --git a/tests/ui/parser/qualified-path-in-turbofish.rs b/tests/ui/parser/qualified-path-in-turbofish.rs
new file mode 100644
index 000000000..2f4b2ed34
--- /dev/null
+++ b/tests/ui/parser/qualified-path-in-turbofish.rs
@@ -0,0 +1,19 @@
+// run-rustfix
+trait T {
+    type Ty;
+}
+
+struct Impl;
+
+impl T for Impl {
+    type Ty = u32;
+}
+
+fn template<T>() -> i64 {
+    3
+}
+
+fn main() {
+    template::<<Impl as T>:Ty>();
+    //~^ ERROR found single colon before projection in qualified path
+}
diff --git a/tests/ui/parser/qualified-path-in-turbofish.stderr b/tests/ui/parser/qualified-path-in-turbofish.stderr
new file mode 100644
index 000000000..8857d2ef3
--- /dev/null
+++ b/tests/ui/parser/qualified-path-in-turbofish.stderr
@@ -0,0 +1,8 @@
+error: found single colon before projection in qualified path
+  --> $DIR/qualified-path-in-turbofish.rs:17:27
+   |
+LL |     template::<<Impl as T>:Ty>();
+   |                           ^ help: use double colon: `::`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/range-3.rs b/tests/ui/parser/range-3.rs
new file mode 100644
index 000000000..2c917a24e
--- /dev/null
+++ b/tests/ui/parser/range-3.rs
@@ -0,0 +1,6 @@
+// Test range syntax - syntax errors.
+
+pub fn main() {
+    let r = 1..2..3;
+    //~^ ERROR expected one of `.`, `;`, `?`, `else`, or an operator, found `..`
+}
diff --git a/tests/ui/parser/range-3.stderr b/tests/ui/parser/range-3.stderr
new file mode 100644
index 000000000..340167f18
--- /dev/null
+++ b/tests/ui/parser/range-3.stderr
@@ -0,0 +1,8 @@
+error: expected one of `.`, `;`, `?`, `else`, or an operator, found `..`
+  --> $DIR/range-3.rs:4:17
+   |
+LL |     let r = 1..2..3;
+   |                 ^^ expected one of `.`, `;`, `?`, `else`, or an operator
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/range-4.rs b/tests/ui/parser/range-4.rs
new file mode 100644
index 000000000..c970c96de
--- /dev/null
+++ b/tests/ui/parser/range-4.rs
@@ -0,0 +1,6 @@
+// Test range syntax - syntax errors.
+
+pub fn main() {
+    let r = ..1..2;
+    //~^ ERROR expected one of `.`, `;`, `?`, `else`, or an operator, found `..`
+}
diff --git a/tests/ui/parser/range-4.stderr b/tests/ui/parser/range-4.stderr
new file mode 100644
index 000000000..720d48938
--- /dev/null
+++ b/tests/ui/parser/range-4.stderr
@@ -0,0 +1,8 @@
+error: expected one of `.`, `;`, `?`, `else`, or an operator, found `..`
+  --> $DIR/range-4.rs:4:16
+   |
+LL |     let r = ..1..2;
+   |                ^^ expected one of `.`, `;`, `?`, `else`, or an operator
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/range-inclusive-extra-equals.rs b/tests/ui/parser/range-inclusive-extra-equals.rs
new file mode 100644
index 000000000..d41c0699c
--- /dev/null
+++ b/tests/ui/parser/range-inclusive-extra-equals.rs
@@ -0,0 +1,10 @@
+// Makes sure that a helpful message is shown when someone mistypes
+// an inclusive range as `..==` rather than `..=`. This is an
+// easy mistake, because of the resemblance to`==`.
+// See #86395 for a bit of background.
+
+pub fn main() {
+    if let 1..==3 = 1 {} //~ERROR unexpected `=` after inclusive range
+                      //~|HELP use `..=` instead
+                      //~|NOTE inclusive ranges end with a single equals sign
+}
diff --git a/tests/ui/parser/range-inclusive-extra-equals.stderr b/tests/ui/parser/range-inclusive-extra-equals.stderr
new file mode 100644
index 000000000..d37b6be4f
--- /dev/null
+++ b/tests/ui/parser/range-inclusive-extra-equals.stderr
@@ -0,0 +1,10 @@
+error: unexpected `=` after inclusive range
+  --> $DIR/range-inclusive-extra-equals.rs:7:13
+   |
+LL |     if let 1..==3 = 1 {}
+   |             ^^^^ help: use `..=` instead
+   |
+   = note: inclusive ranges end with a single equals sign (`..=`)
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/range_inclusive.fixed b/tests/ui/parser/range_inclusive.fixed
new file mode 100644
index 000000000..fe23880d1
--- /dev/null
+++ b/tests/ui/parser/range_inclusive.fixed
@@ -0,0 +1,7 @@
+// run-rustfix
+// Make sure that inclusive ranges with no end point don't parse.
+
+pub fn main() {
+    for _ in 1.. {} //~ERROR inclusive range with no end
+                     //~^HELP use `..` instead
+}
diff --git a/tests/ui/parser/range_inclusive.rs b/tests/ui/parser/range_inclusive.rs
new file mode 100644
index 000000000..bc6d2413d
--- /dev/null
+++ b/tests/ui/parser/range_inclusive.rs
@@ -0,0 +1,7 @@
+// run-rustfix
+// Make sure that inclusive ranges with no end point don't parse.
+
+pub fn main() {
+    for _ in 1..= {} //~ERROR inclusive range with no end
+                     //~^HELP use `..` instead
+}
diff --git a/tests/ui/parser/range_inclusive.stderr b/tests/ui/parser/range_inclusive.stderr
new file mode 100644
index 000000000..8a9178263
--- /dev/null
+++ b/tests/ui/parser/range_inclusive.stderr
@@ -0,0 +1,11 @@
+error[E0586]: inclusive range with no end
+  --> $DIR/range_inclusive.rs:5:15
+   |
+LL |     for _ in 1..= {}
+   |               ^^^ help: use `..` instead
+   |
+   = note: inclusive ranges must be bounded at the end (`..=b` or `a..=b`)
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0586`.
diff --git a/tests/ui/parser/range_inclusive_dotdotdot.rs b/tests/ui/parser/range_inclusive_dotdotdot.rs
new file mode 100644
index 000000000..c3e600e77
--- /dev/null
+++ b/tests/ui/parser/range_inclusive_dotdotdot.rs
@@ -0,0 +1,23 @@
+// Make sure that inclusive ranges with `...` syntax don't parse.
+
+use std::ops::RangeToInclusive;
+
+fn return_range_to() -> RangeToInclusive<i32> {
+    return ...1; //~ERROR unexpected token: `...`
+                 //~^HELP  use `..` for an exclusive range
+                 //~^^HELP or `..=` for an inclusive range
+}
+
+pub fn main() {
+    let x = ...0;    //~ERROR unexpected token: `...`
+                     //~^HELP  use `..` for an exclusive range
+                     //~^^HELP or `..=` for an inclusive range
+
+    let x = 5...5;   //~ERROR unexpected token: `...`
+                     //~^HELP  use `..` for an exclusive range
+                     //~^^HELP or `..=` for an inclusive range
+
+    for _ in 0...1 {} //~ERROR unexpected token: `...`
+                     //~^HELP  use `..` for an exclusive range
+                     //~^^HELP or `..=` for an inclusive range
+}
diff --git a/tests/ui/parser/range_inclusive_dotdotdot.stderr b/tests/ui/parser/range_inclusive_dotdotdot.stderr
new file mode 100644
index 000000000..2dc2c87eb
--- /dev/null
+++ b/tests/ui/parser/range_inclusive_dotdotdot.stderr
@@ -0,0 +1,62 @@
+error: unexpected token: `...`
+  --> $DIR/range_inclusive_dotdotdot.rs:6:12
+   |
+LL |     return ...1;
+   |            ^^^
+   |
+help: use `..` for an exclusive range
+   |
+LL |     return ..1;
+   |            ~~
+help: or `..=` for an inclusive range
+   |
+LL |     return ..=1;
+   |            ~~~
+
+error: unexpected token: `...`
+  --> $DIR/range_inclusive_dotdotdot.rs:12:13
+   |
+LL |     let x = ...0;
+   |             ^^^
+   |
+help: use `..` for an exclusive range
+   |
+LL |     let x = ..0;
+   |             ~~
+help: or `..=` for an inclusive range
+   |
+LL |     let x = ..=0;
+   |             ~~~
+
+error: unexpected token: `...`
+  --> $DIR/range_inclusive_dotdotdot.rs:16:14
+   |
+LL |     let x = 5...5;
+   |              ^^^
+   |
+help: use `..` for an exclusive range
+   |
+LL |     let x = 5..5;
+   |              ~~
+help: or `..=` for an inclusive range
+   |
+LL |     let x = 5..=5;
+   |              ~~~
+
+error: unexpected token: `...`
+  --> $DIR/range_inclusive_dotdotdot.rs:20:15
+   |
+LL |     for _ in 0...1 {}
+   |               ^^^
+   |
+help: use `..` for an exclusive range
+   |
+LL |     for _ in 0..1 {}
+   |               ~~
+help: or `..=` for an inclusive range
+   |
+LL |     for _ in 0..=1 {}
+   |               ~~~
+
+error: aborting due to 4 previous errors
+
diff --git a/tests/ui/parser/ranges-precedence.rs b/tests/ui/parser/ranges-precedence.rs
new file mode 100644
index 000000000..db241ed0c
--- /dev/null
+++ b/tests/ui/parser/ranges-precedence.rs
@@ -0,0 +1,52 @@
+// run-pass
+// Test that the precedence of ranges is correct
+
+
+
+struct Foo {
+    foo: usize,
+}
+
+impl Foo {
+    fn bar(&self) -> usize { 5 }
+}
+
+fn main() {
+    let x = 1+3..4+5;
+    assert_eq!(x, (4..9));
+
+    let x = 1..4+5;
+    assert_eq!(x, (1..9));
+
+    let x = 1+3..4;
+    assert_eq!(x, (4..4));
+
+    let a = Foo { foo: 3 };
+    let x = a.foo..a.bar();
+    assert_eq!(x, (3..5));
+
+    let x = 1+3..;
+    assert_eq!(x, (4..));
+    let x = ..1+3;
+    assert_eq!(x, (..4));
+
+    let a = &[0, 1, 2, 3, 4, 5, 6];
+    let x = &a[1+1..2+2];
+    assert_eq!(x, &a[2..4]);
+    let x = &a[..1+2];
+    assert_eq!(x, &a[..3]);
+    let x = &a[1+2..];
+    assert_eq!(x, &a[3..]);
+
+    for _i in 2+4..10-3 {}
+
+    let i = 42;
+    for _ in 1..i {}
+    for _ in 1.. { break; }
+
+    let x = [1]..[2];
+    assert_eq!(x, (([1])..([2])));
+
+    let y = ..;
+    assert_eq!(y, (..));
+}
diff --git a/tests/ui/parser/raw/issue-70677-panic-on-unterminated-raw-str-at-eof.rs b/tests/ui/parser/raw/issue-70677-panic-on-unterminated-raw-str-at-eof.rs
new file mode 100644
index 000000000..bdfc29a3d
--- /dev/null
+++ b/tests/ui/parser/raw/issue-70677-panic-on-unterminated-raw-str-at-eof.rs
@@ -0,0 +1,5 @@
+// This won't actually panic because of the error comment -- the `"` needs to be
+// the last byte in the file (including not having a trailing newline)
+// Prior to the fix you get the error: 'expected item, found `r" ...`'
+// because the string being unterminated wasn't properly detected.
+r" //~ unterminated raw string
diff --git a/tests/ui/parser/raw/issue-70677-panic-on-unterminated-raw-str-at-eof.stderr b/tests/ui/parser/raw/issue-70677-panic-on-unterminated-raw-str-at-eof.stderr
new file mode 100644
index 000000000..3a7e2a4b1
--- /dev/null
+++ b/tests/ui/parser/raw/issue-70677-panic-on-unterminated-raw-str-at-eof.stderr
@@ -0,0 +1,9 @@
+error[E0748]: unterminated raw string
+  --> $DIR/issue-70677-panic-on-unterminated-raw-str-at-eof.rs:5:1
+   |
+LL | r"
+   | ^ unterminated raw string
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0748`.
diff --git a/tests/ui/parser/raw/raw-byte-string-eof.rs b/tests/ui/parser/raw/raw-byte-string-eof.rs
new file mode 100644
index 000000000..b74907b72
--- /dev/null
+++ b/tests/ui/parser/raw/raw-byte-string-eof.rs
@@ -0,0 +1,3 @@
+pub fn main() {
+    br##"a"#;  //~ unterminated raw string
+}
diff --git a/tests/ui/parser/raw/raw-byte-string-eof.stderr b/tests/ui/parser/raw/raw-byte-string-eof.stderr
new file mode 100644
index 000000000..a76668e80
--- /dev/null
+++ b/tests/ui/parser/raw/raw-byte-string-eof.stderr
@@ -0,0 +1,13 @@
+error[E0748]: unterminated raw string
+  --> $DIR/raw-byte-string-eof.rs:2:5
+   |
+LL |     br##"a"#;
+   |     ^      - help: consider terminating the string here: `##`
+   |     |
+   |     unterminated raw string
+   |
+   = note: this raw string should be terminated with `"##`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0748`.
diff --git a/tests/ui/parser/raw/raw-byte-string-literals.rs b/tests/ui/parser/raw/raw-byte-string-literals.rs
new file mode 100644
index 000000000..1b859fee5
--- /dev/null
+++ b/tests/ui/parser/raw/raw-byte-string-literals.rs
@@ -0,0 +1,7 @@
+// ignore-tidy-cr
+
+pub fn main() {
+    br"a
"; //~ ERROR bare CR not allowed in raw string
+    br"é";  //~ ERROR non-ASCII character in raw byte string literal
+    br##~"a"~##;  //~ ERROR only `#` is allowed in raw string delimitation
+}
diff --git a/tests/ui/parser/raw/raw-byte-string-literals.stderr b/tests/ui/parser/raw/raw-byte-string-literals.stderr
new file mode 100644
index 000000000..a2f27d1ed
--- /dev/null
+++ b/tests/ui/parser/raw/raw-byte-string-literals.stderr
@@ -0,0 +1,20 @@
+error: bare CR not allowed in raw string
+  --> $DIR/raw-byte-string-literals.rs:4:9
+   |
+LL |     br"a
";
+   |         ^
+
+error: non-ASCII character in raw byte string literal
+  --> $DIR/raw-byte-string-literals.rs:5:8
+   |
+LL |     br"é";
+   |        ^ must be ASCII
+
+error: found invalid character; only `#` is allowed in raw string delimitation: ~
+  --> $DIR/raw-byte-string-literals.rs:6:5
+   |
+LL |     br##~"a"~##;
+   |     ^^^^^
+
+error: aborting due to 3 previous errors
+
diff --git a/tests/ui/parser/raw/raw-literal-keywords.rs b/tests/ui/parser/raw/raw-literal-keywords.rs
new file mode 100644
index 000000000..a986980fa
--- /dev/null
+++ b/tests/ui/parser/raw/raw-literal-keywords.rs
@@ -0,0 +1,25 @@
+fn test_if() {
+    r#if true { } //~ ERROR found keyword `true`
+}
+
+fn test_struct() {
+    r#struct Test; //~ ERROR found `Test`
+}
+
+fn test_union() {
+    r#union Test; //~ ERROR found `Test`
+}
+
+fn test_if_2() {
+    let _ = r#if; //~ ERROR cannot find value `r#if` in this scope
+}
+
+fn test_struct_2() {
+    let _ = r#struct; //~ ERROR cannot find value `r#struct` in this scope
+}
+
+fn test_union_2() {
+    let _ = r#union; //~ ERROR cannot find value `union` in this scope
+}
+
+fn main() {}
diff --git a/tests/ui/parser/raw/raw-literal-keywords.stderr b/tests/ui/parser/raw/raw-literal-keywords.stderr
new file mode 100644
index 000000000..f7b6c894a
--- /dev/null
+++ b/tests/ui/parser/raw/raw-literal-keywords.stderr
@@ -0,0 +1,39 @@
+error: expected one of `!`, `.`, `::`, `;`, `?`, `{`, `}`, or an operator, found keyword `true`
+  --> $DIR/raw-literal-keywords.rs:2:10
+   |
+LL |     r#if true { }
+   |          ^^^^ expected one of 8 possible tokens
+
+error: expected one of `!`, `.`, `::`, `;`, `?`, `{`, `}`, or an operator, found `Test`
+  --> $DIR/raw-literal-keywords.rs:6:14
+   |
+LL |     r#struct Test;
+   |              ^^^^ expected one of 8 possible tokens
+
+error: expected one of `!`, `.`, `::`, `;`, `?`, `{`, `}`, or an operator, found `Test`
+  --> $DIR/raw-literal-keywords.rs:10:13
+   |
+LL |     r#union Test;
+   |             ^^^^ expected one of 8 possible tokens
+
+error[E0425]: cannot find value `r#if` in this scope
+  --> $DIR/raw-literal-keywords.rs:14:13
+   |
+LL |     let _ = r#if;
+   |             ^^^^ not found in this scope
+
+error[E0425]: cannot find value `r#struct` in this scope
+  --> $DIR/raw-literal-keywords.rs:18:13
+   |
+LL |     let _ = r#struct;
+   |             ^^^^^^^^ not found in this scope
+
+error[E0425]: cannot find value `union` in this scope
+  --> $DIR/raw-literal-keywords.rs:22:13
+   |
+LL |     let _ = r#union;
+   |             ^^^^^^^ not found in this scope
+
+error: aborting due to 6 previous errors
+
+For more information about this error, try `rustc --explain E0425`.
diff --git a/tests/ui/parser/raw/raw-literal-self.rs b/tests/ui/parser/raw/raw-literal-self.rs
new file mode 100644
index 000000000..a0c9e24c2
--- /dev/null
+++ b/tests/ui/parser/raw/raw-literal-self.rs
@@ -0,0 +1,4 @@
+fn main() {
+    let r#self: ();
+    //~^ ERROR `self` cannot be a raw identifier
+}
diff --git a/tests/ui/parser/raw/raw-literal-self.stderr b/tests/ui/parser/raw/raw-literal-self.stderr
new file mode 100644
index 000000000..2a40dfe20
--- /dev/null
+++ b/tests/ui/parser/raw/raw-literal-self.stderr
@@ -0,0 +1,8 @@
+error: `self` cannot be a raw identifier
+  --> $DIR/raw-literal-self.rs:2:9
+   |
+LL |     let r#self: ();
+   |         ^^^^^^
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/raw/raw-literal-underscore.rs b/tests/ui/parser/raw/raw-literal-underscore.rs
new file mode 100644
index 000000000..a9d9e13a9
--- /dev/null
+++ b/tests/ui/parser/raw/raw-literal-underscore.rs
@@ -0,0 +1,4 @@
+fn main() {
+    let r#_: ();
+    //~^ ERROR `_` cannot be a raw identifier
+}
diff --git a/tests/ui/parser/raw/raw-literal-underscore.stderr b/tests/ui/parser/raw/raw-literal-underscore.stderr
new file mode 100644
index 000000000..d7a364d85
--- /dev/null
+++ b/tests/ui/parser/raw/raw-literal-underscore.stderr
@@ -0,0 +1,8 @@
+error: `_` cannot be a raw identifier
+  --> $DIR/raw-literal-underscore.rs:2:9
+   |
+LL |     let r#_: ();
+   |         ^^^
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/raw/raw-str-delim.rs b/tests/ui/parser/raw/raw-str-delim.rs
new file mode 100644
index 000000000..2f13893ce
--- /dev/null
+++ b/tests/ui/parser/raw/raw-str-delim.rs
@@ -0,0 +1,3 @@
+static s: &'static str =
+    r#~"#"~# //~ ERROR found invalid character; only `#` is allowed in raw string delimitation
+;
diff --git a/tests/ui/parser/raw/raw-str-delim.stderr b/tests/ui/parser/raw/raw-str-delim.stderr
new file mode 100644
index 000000000..8a04f99a1
--- /dev/null
+++ b/tests/ui/parser/raw/raw-str-delim.stderr
@@ -0,0 +1,8 @@
+error: found invalid character; only `#` is allowed in raw string delimitation: ~
+  --> $DIR/raw-str-delim.rs:2:5
+   |
+LL |     r#~"#"~#
+   |     ^^^
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/raw/raw-str-in-macro-call.rs b/tests/ui/parser/raw/raw-str-in-macro-call.rs
new file mode 100644
index 000000000..462c2279f
--- /dev/null
+++ b/tests/ui/parser/raw/raw-str-in-macro-call.rs
@@ -0,0 +1,14 @@
+// check-pass
+
+macro_rules! m1 {
+    ($tt:tt #) => ()
+}
+
+macro_rules! m2 {
+    ($tt:tt) => ()
+}
+
+fn main() {
+    m1!(r#"abc"##);
+    m2!(r#"abc"#);
+}
diff --git a/tests/ui/parser/raw/raw-str-unbalanced.rs b/tests/ui/parser/raw/raw-str-unbalanced.rs
new file mode 100644
index 000000000..38537f8b3
--- /dev/null
+++ b/tests/ui/parser/raw/raw-str-unbalanced.rs
@@ -0,0 +1,22 @@
+static s: &'static str =
+    r#""## //~ ERROR too many `#` when terminating raw string
+;
+
+static s2: &'static str =
+    r#"
+      "#### //~ ERROR too many `#` when terminating raw string
+;
+
+const A: &'static str = r"" //~ ERROR expected `;`, found `#`
+
+// Test
+#[test]
+fn test() {}
+
+const B: &'static str = r""## //~ ERROR too many `#` when terminating raw string
+
+// Test
+#[test]
+fn test2() {}
+
+fn main() {}
diff --git a/tests/ui/parser/raw/raw-str-unbalanced.stderr b/tests/ui/parser/raw/raw-str-unbalanced.stderr
new file mode 100644
index 000000000..eac8c06c1
--- /dev/null
+++ b/tests/ui/parser/raw/raw-str-unbalanced.stderr
@@ -0,0 +1,36 @@
+error: too many `#` when terminating raw string
+  --> $DIR/raw-str-unbalanced.rs:2:10
+   |
+LL |     r#""##
+   |     -----^ help: remove the extra `#`
+   |     |
+   |     this raw string started with 1 `#`
+
+error: too many `#` when terminating raw string
+  --> $DIR/raw-str-unbalanced.rs:7:9
+   |
+LL | /     r#"
+LL | |       "####
+   | |        -^^^ help: remove the extra `#`s
+   | |________|
+   |          this raw string started with 1 `#`
+
+error: expected `;`, found `#`
+  --> $DIR/raw-str-unbalanced.rs:10:28
+   |
+LL | const A: &'static str = r""
+   |                            ^ help: add `;` here
+...
+LL | #[test]
+   | - unexpected token
+
+error: too many `#` when terminating raw string
+  --> $DIR/raw-str-unbalanced.rs:16:28
+   |
+LL | const B: &'static str = r""##
+   |                         ---^^ help: remove the extra `#`s
+   |                         |
+   |                         this raw string started with 0 `#`s
+
+error: aborting due to 4 previous errors
+
diff --git a/tests/ui/parser/raw/raw-str-unterminated.rs b/tests/ui/parser/raw/raw-str-unterminated.rs
new file mode 100644
index 000000000..fd3172955
--- /dev/null
+++ b/tests/ui/parser/raw/raw-str-unterminated.rs
@@ -0,0 +1,4 @@
+static s: &'static str =
+    r#" string literal goes on
+        and on
+    //~^^ ERROR unterminated raw string
diff --git a/tests/ui/parser/raw/raw-str-unterminated.stderr b/tests/ui/parser/raw/raw-str-unterminated.stderr
new file mode 100644
index 000000000..077f763f1
--- /dev/null
+++ b/tests/ui/parser/raw/raw-str-unterminated.stderr
@@ -0,0 +1,11 @@
+error[E0748]: unterminated raw string
+  --> $DIR/raw-str-unterminated.rs:2:5
+   |
+LL |     r#" string literal goes on
+   |     ^ unterminated raw string
+   |
+   = note: this raw string should be terminated with `"#`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0748`.
diff --git a/tests/ui/parser/raw/raw-string-2.rs b/tests/ui/parser/raw/raw-string-2.rs
new file mode 100644
index 000000000..067332d28
--- /dev/null
+++ b/tests/ui/parser/raw/raw-string-2.rs
@@ -0,0 +1,4 @@
+fn main() {
+    let x = r###"here's a long string"# "# "##;
+    //~^ ERROR unterminated raw string
+}
diff --git a/tests/ui/parser/raw/raw-string-2.stderr b/tests/ui/parser/raw/raw-string-2.stderr
new file mode 100644
index 000000000..8bbac9d7b
--- /dev/null
+++ b/tests/ui/parser/raw/raw-string-2.stderr
@@ -0,0 +1,11 @@
+error[E0748]: unterminated raw string
+  --> $DIR/raw-string-2.rs:2:13
+   |
+LL |     let x = r###"here's a long string"# "# "##;
+   |             ^ unterminated raw string       -- help: consider terminating the string here: `###`
+   |
+   = note: this raw string should be terminated with `"###`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0748`.
diff --git a/tests/ui/parser/raw/raw-string.rs b/tests/ui/parser/raw/raw-string.rs
new file mode 100644
index 000000000..84f07c4a9
--- /dev/null
+++ b/tests/ui/parser/raw/raw-string.rs
@@ -0,0 +1,4 @@
+fn main() {
+    let x = r##"lol"#;
+    //~^ ERROR unterminated raw string
+}
diff --git a/tests/ui/parser/raw/raw-string.stderr b/tests/ui/parser/raw/raw-string.stderr
new file mode 100644
index 000000000..b2b853a89
--- /dev/null
+++ b/tests/ui/parser/raw/raw-string.stderr
@@ -0,0 +1,13 @@
+error[E0748]: unterminated raw string
+  --> $DIR/raw-string.rs:2:13
+   |
+LL |     let x = r##"lol"#;
+   |             ^       - help: consider terminating the string here: `##`
+   |             |
+   |             unterminated raw string
+   |
+   = note: this raw string should be terminated with `"##`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0748`.
diff --git a/tests/ui/parser/recover-assoc-const-constraint.rs b/tests/ui/parser/recover-assoc-const-constraint.rs
new file mode 100644
index 000000000..1453e6cb5
--- /dev/null
+++ b/tests/ui/parser/recover-assoc-const-constraint.rs
@@ -0,0 +1,9 @@
+#[cfg(FALSE)]
+fn syntax() {
+    bar::<Item = 42>();
+    //~^ ERROR associated const equality is incomplete
+    bar::<Item = { 42 }>();
+    //~^ ERROR associated const equality is incomplete
+}
+
+fn main() {}
diff --git a/tests/ui/parser/recover-assoc-const-constraint.stderr b/tests/ui/parser/recover-assoc-const-constraint.stderr
new file mode 100644
index 000000000..2d36ce4e9
--- /dev/null
+++ b/tests/ui/parser/recover-assoc-const-constraint.stderr
@@ -0,0 +1,21 @@
+error[E0658]: associated const equality is incomplete
+  --> $DIR/recover-assoc-const-constraint.rs:3:11
+   |
+LL |     bar::<Item = 42>();
+   |           ^^^^^^^^^
+   |
+   = note: see issue #92827 <https://github.com/rust-lang/rust/issues/92827> for more information
+   = help: add `#![feature(associated_const_equality)]` to the crate attributes to enable
+
+error[E0658]: associated const equality is incomplete
+  --> $DIR/recover-assoc-const-constraint.rs:5:11
+   |
+LL |     bar::<Item = { 42 }>();
+   |           ^^^^^^^^^^^^^
+   |
+   = note: see issue #92827 <https://github.com/rust-lang/rust/issues/92827> for more information
+   = help: add `#![feature(associated_const_equality)]` to the crate attributes to enable
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0658`.
diff --git a/tests/ui/parser/recover-assoc-eq-missing-term.rs b/tests/ui/parser/recover-assoc-eq-missing-term.rs
new file mode 100644
index 000000000..4b42c44dc
--- /dev/null
+++ b/tests/ui/parser/recover-assoc-eq-missing-term.rs
@@ -0,0 +1,6 @@
+#[cfg(FALSE)]
+fn syntax() {
+    bar::<Item =   >(); //~ ERROR missing type to the right of `=`
+}
+
+fn main() {}
diff --git a/tests/ui/parser/recover-assoc-eq-missing-term.stderr b/tests/ui/parser/recover-assoc-eq-missing-term.stderr
new file mode 100644
index 000000000..152f7f2fb
--- /dev/null
+++ b/tests/ui/parser/recover-assoc-eq-missing-term.stderr
@@ -0,0 +1,18 @@
+error: missing type to the right of `=`
+  --> $DIR/recover-assoc-eq-missing-term.rs:3:17
+   |
+LL |     bar::<Item =   >();
+   |                 ^^^
+   |
+help: to constrain the associated type, add a type after `=`
+   |
+LL |     bar::<Item = TheType>();
+   |                  +++++++
+help: remove the `=` if `Item` is a type
+   |
+LL -     bar::<Item =   >();
+LL +     bar::<Item >();
+   |
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/recover-assoc-lifetime-constraint.rs b/tests/ui/parser/recover-assoc-lifetime-constraint.rs
new file mode 100644
index 000000000..558fcdfe1
--- /dev/null
+++ b/tests/ui/parser/recover-assoc-lifetime-constraint.rs
@@ -0,0 +1,6 @@
+#[cfg(FALSE)]
+fn syntax() {
+    bar::<Item = 'a>(); //~ ERROR associated lifetimes are not supported
+}
+
+fn main() {}
diff --git a/tests/ui/parser/recover-assoc-lifetime-constraint.stderr b/tests/ui/parser/recover-assoc-lifetime-constraint.stderr
new file mode 100644
index 000000000..79437533d
--- /dev/null
+++ b/tests/ui/parser/recover-assoc-lifetime-constraint.stderr
@@ -0,0 +1,12 @@
+error: associated lifetimes are not supported
+  --> $DIR/recover-assoc-lifetime-constraint.rs:3:11
+   |
+LL |     bar::<Item = 'a>();
+   |           ^^^^^^^--
+   |                  |
+   |                  the lifetime is given here
+   |
+   = help: if you meant to specify a trait object, write `dyn Trait + 'lifetime`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/recover-const-async-fn-ptr.rs b/tests/ui/parser/recover-const-async-fn-ptr.rs
new file mode 100644
index 000000000..25af8772c
--- /dev/null
+++ b/tests/ui/parser/recover-const-async-fn-ptr.rs
@@ -0,0 +1,25 @@
+// edition:2018
+
+type T0 = const fn(); //~ ERROR an `fn` pointer type cannot be `const`
+type T1 = const extern "C" fn(); //~ ERROR an `fn` pointer type cannot be `const`
+type T2 = const unsafe extern fn(); //~ ERROR an `fn` pointer type cannot be `const`
+type T3 = async fn(); //~ ERROR an `fn` pointer type cannot be `async`
+type T4 = async extern fn(); //~ ERROR an `fn` pointer type cannot be `async`
+type T5 = async unsafe extern "C" fn(); //~ ERROR an `fn` pointer type cannot be `async`
+type T6 = const async unsafe extern "C" fn();
+//~^ ERROR an `fn` pointer type cannot be `const`
+//~| ERROR an `fn` pointer type cannot be `async`
+
+type FT0 = for<'a> const fn(); //~ ERROR an `fn` pointer type cannot be `const`
+type FT1 = for<'a> const extern "C" fn(); //~ ERROR an `fn` pointer type cannot be `const`
+type FT2 = for<'a> const unsafe extern fn(); //~ ERROR an `fn` pointer type cannot be `const`
+type FT3 = for<'a> async fn(); //~ ERROR an `fn` pointer type cannot be `async`
+type FT4 = for<'a> async extern fn(); //~ ERROR an `fn` pointer type cannot be `async`
+type FT5 = for<'a> async unsafe extern "C" fn(); //~ ERROR an `fn` pointer type cannot be `async`
+type FT6 = for<'a> const async unsafe extern "C" fn();
+//~^ ERROR an `fn` pointer type cannot be `const`
+//~| ERROR an `fn` pointer type cannot be `async`
+
+fn main() {
+    let _recovery_witness: () = 0; //~ ERROR mismatched types
+}
diff --git a/tests/ui/parser/recover-const-async-fn-ptr.stderr b/tests/ui/parser/recover-const-async-fn-ptr.stderr
new file mode 100644
index 000000000..7012096b6
--- /dev/null
+++ b/tests/ui/parser/recover-const-async-fn-ptr.stderr
@@ -0,0 +1,155 @@
+error: an `fn` pointer type cannot be `const`
+  --> $DIR/recover-const-async-fn-ptr.rs:3:11
+   |
+LL | type T0 = const fn();
+   |           -----^^^^^
+   |           |
+   |           `const` because of this
+   |           help: remove the `const` qualifier
+
+error: an `fn` pointer type cannot be `const`
+  --> $DIR/recover-const-async-fn-ptr.rs:4:11
+   |
+LL | type T1 = const extern "C" fn();
+   |           -----^^^^^^^^^^^^^^^^
+   |           |
+   |           `const` because of this
+   |           help: remove the `const` qualifier
+
+error: an `fn` pointer type cannot be `const`
+  --> $DIR/recover-const-async-fn-ptr.rs:5:11
+   |
+LL | type T2 = const unsafe extern fn();
+   |           -----^^^^^^^^^^^^^^^^^^^
+   |           |
+   |           `const` because of this
+   |           help: remove the `const` qualifier
+
+error: an `fn` pointer type cannot be `async`
+  --> $DIR/recover-const-async-fn-ptr.rs:6:11
+   |
+LL | type T3 = async fn();
+   |           -----^^^^^
+   |           |
+   |           `async` because of this
+   |           help: remove the `async` qualifier
+
+error: an `fn` pointer type cannot be `async`
+  --> $DIR/recover-const-async-fn-ptr.rs:7:11
+   |
+LL | type T4 = async extern fn();
+   |           -----^^^^^^^^^^^^
+   |           |
+   |           `async` because of this
+   |           help: remove the `async` qualifier
+
+error: an `fn` pointer type cannot be `async`
+  --> $DIR/recover-const-async-fn-ptr.rs:8:11
+   |
+LL | type T5 = async unsafe extern "C" fn();
+   |           -----^^^^^^^^^^^^^^^^^^^^^^^
+   |           |
+   |           `async` because of this
+   |           help: remove the `async` qualifier
+
+error: an `fn` pointer type cannot be `const`
+  --> $DIR/recover-const-async-fn-ptr.rs:9:11
+   |
+LL | type T6 = const async unsafe extern "C" fn();
+   |           -----^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |           |
+   |           `const` because of this
+   |           help: remove the `const` qualifier
+
+error: an `fn` pointer type cannot be `async`
+  --> $DIR/recover-const-async-fn-ptr.rs:9:11
+   |
+LL | type T6 = const async unsafe extern "C" fn();
+   |           ^^^^^^-----^^^^^^^^^^^^^^^^^^^^^^^
+   |                 |
+   |                 `async` because of this
+   |                 help: remove the `async` qualifier
+
+error: an `fn` pointer type cannot be `const`
+  --> $DIR/recover-const-async-fn-ptr.rs:13:12
+   |
+LL | type FT0 = for<'a> const fn();
+   |            ^^^^^^^^-----^^^^^
+   |                    |
+   |                    `const` because of this
+   |                    help: remove the `const` qualifier
+
+error: an `fn` pointer type cannot be `const`
+  --> $DIR/recover-const-async-fn-ptr.rs:14:12
+   |
+LL | type FT1 = for<'a> const extern "C" fn();
+   |            ^^^^^^^^-----^^^^^^^^^^^^^^^^
+   |                    |
+   |                    `const` because of this
+   |                    help: remove the `const` qualifier
+
+error: an `fn` pointer type cannot be `const`
+  --> $DIR/recover-const-async-fn-ptr.rs:15:12
+   |
+LL | type FT2 = for<'a> const unsafe extern fn();
+   |            ^^^^^^^^-----^^^^^^^^^^^^^^^^^^^
+   |                    |
+   |                    `const` because of this
+   |                    help: remove the `const` qualifier
+
+error: an `fn` pointer type cannot be `async`
+  --> $DIR/recover-const-async-fn-ptr.rs:16:12
+   |
+LL | type FT3 = for<'a> async fn();
+   |            ^^^^^^^^-----^^^^^
+   |                    |
+   |                    `async` because of this
+   |                    help: remove the `async` qualifier
+
+error: an `fn` pointer type cannot be `async`
+  --> $DIR/recover-const-async-fn-ptr.rs:17:12
+   |
+LL | type FT4 = for<'a> async extern fn();
+   |            ^^^^^^^^-----^^^^^^^^^^^^
+   |                    |
+   |                    `async` because of this
+   |                    help: remove the `async` qualifier
+
+error: an `fn` pointer type cannot be `async`
+  --> $DIR/recover-const-async-fn-ptr.rs:18:12
+   |
+LL | type FT5 = for<'a> async unsafe extern "C" fn();
+   |            ^^^^^^^^-----^^^^^^^^^^^^^^^^^^^^^^^
+   |                    |
+   |                    `async` because of this
+   |                    help: remove the `async` qualifier
+
+error: an `fn` pointer type cannot be `const`
+  --> $DIR/recover-const-async-fn-ptr.rs:19:12
+   |
+LL | type FT6 = for<'a> const async unsafe extern "C" fn();
+   |            ^^^^^^^^-----^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |                    |
+   |                    `const` because of this
+   |                    help: remove the `const` qualifier
+
+error: an `fn` pointer type cannot be `async`
+  --> $DIR/recover-const-async-fn-ptr.rs:19:12
+   |
+LL | type FT6 = for<'a> const async unsafe extern "C" fn();
+   |            ^^^^^^^^^^^^^^-----^^^^^^^^^^^^^^^^^^^^^^^
+   |                          |
+   |                          `async` because of this
+   |                          help: remove the `async` qualifier
+
+error[E0308]: mismatched types
+  --> $DIR/recover-const-async-fn-ptr.rs:24:33
+   |
+LL |     let _recovery_witness: () = 0;
+   |                            --   ^ expected `()`, found integer
+   |                            |
+   |                            expected due to this
+
+error: aborting due to 17 previous errors
+
+For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/parser/recover-enum.rs b/tests/ui/parser/recover-enum.rs
new file mode 100644
index 000000000..08dd939e2
--- /dev/null
+++ b/tests/ui/parser/recover-enum.rs
@@ -0,0 +1,11 @@
+fn main() {
+    enum Test {
+        Very //~ HELP missing `,`
+        Bad(usize) //~ HELP missing `,`
+        //~^ ERROR expected one of `(`, `,`, `=`, `{`, or `}`, found `Bad`
+        Stuff { a: usize } //~ HELP missing `,`
+        //~^ ERROR expected one of `,`, `=`, or `}`, found `Stuff`
+        Here
+        //~^ ERROR expected one of `,`, `=`, or `}`, found `Here`
+    }
+}
diff --git a/tests/ui/parser/recover-enum.stderr b/tests/ui/parser/recover-enum.stderr
new file mode 100644
index 000000000..a2b650e4f
--- /dev/null
+++ b/tests/ui/parser/recover-enum.stderr
@@ -0,0 +1,37 @@
+error: expected one of `(`, `,`, `=`, `{`, or `}`, found `Bad`
+  --> $DIR/recover-enum.rs:4:9
+   |
+LL |         Very
+   |             -
+   |             |
+   |             expected one of `(`, `,`, `=`, `{`, or `}`
+   |             help: missing `,`
+LL |         Bad(usize)
+   |         ^^^ unexpected token
+
+error: expected one of `,`, `=`, or `}`, found `Stuff`
+  --> $DIR/recover-enum.rs:6:9
+   |
+LL |         Bad(usize)
+   |                   -
+   |                   |
+   |                   expected one of `,`, `=`, or `}`
+   |                   help: missing `,`
+LL |
+LL |         Stuff { a: usize }
+   |         ^^^^^ unexpected token
+
+error: expected one of `,`, `=`, or `}`, found `Here`
+  --> $DIR/recover-enum.rs:8:9
+   |
+LL |         Stuff { a: usize }
+   |                           -
+   |                           |
+   |                           expected one of `,`, `=`, or `}`
+   |                           help: missing `,`
+LL |
+LL |         Here
+   |         ^^^^ unexpected token
+
+error: aborting due to 3 previous errors
+
diff --git a/tests/ui/parser/recover-enum2.rs b/tests/ui/parser/recover-enum2.rs
new file mode 100644
index 000000000..0c9420889
--- /dev/null
+++ b/tests/ui/parser/recover-enum2.rs
@@ -0,0 +1,28 @@
+fn main() {
+    enum Test {
+        Var1,
+        Var2(String),
+        Var3 {
+            abc: {}, //~ ERROR: expected type, found `{`
+        },
+    }
+
+    // recover...
+    let a = 1;
+    enum Test2 {
+        Fine,
+    }
+
+    enum Test3 {
+        StillFine {
+            def: i32,
+        },
+    }
+
+    {
+        // fail again
+        enum Test4 {
+            Nope(i32 {}) //~ ERROR: found `{`
+        }
+    }
+}
diff --git a/tests/ui/parser/recover-enum2.stderr b/tests/ui/parser/recover-enum2.stderr
new file mode 100644
index 000000000..7634bca92
--- /dev/null
+++ b/tests/ui/parser/recover-enum2.stderr
@@ -0,0 +1,16 @@
+error: expected type, found `{`
+  --> $DIR/recover-enum2.rs:6:18
+   |
+LL |         Var3 {
+   |         ---- while parsing this struct
+LL |             abc: {},
+   |                  ^ expected type
+
+error: expected one of `!`, `(`, `)`, `+`, `,`, `::`, or `<`, found `{`
+  --> $DIR/recover-enum2.rs:25:22
+   |
+LL |             Nope(i32 {})
+   |                      ^ expected one of 7 possible tokens
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/recover-field-extra-angle-brackets-in-struct-with-a-field.rs b/tests/ui/parser/recover-field-extra-angle-brackets-in-struct-with-a-field.rs
new file mode 100644
index 000000000..e815c7611
--- /dev/null
+++ b/tests/ui/parser/recover-field-extra-angle-brackets-in-struct-with-a-field.rs
@@ -0,0 +1,6 @@
+struct TypedArenaChunk {
+    next: Option<String>>
+    //~^ ERROR unmatched angle bracket
+}
+
+fn main() {}
diff --git a/tests/ui/parser/recover-field-extra-angle-brackets-in-struct-with-a-field.stderr b/tests/ui/parser/recover-field-extra-angle-brackets-in-struct-with-a-field.stderr
new file mode 100644
index 000000000..17237c930
--- /dev/null
+++ b/tests/ui/parser/recover-field-extra-angle-brackets-in-struct-with-a-field.stderr
@@ -0,0 +1,11 @@
+error: unmatched angle bracket
+  --> $DIR/recover-field-extra-angle-brackets-in-struct-with-a-field.rs:2:25
+   |
+LL |       next: Option<String>>
+   |  _________________________^
+LL | |
+LL | | }
+   | |_ help: remove extra angle bracket
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/recover-field-extra-angle-brackets.rs b/tests/ui/parser/recover-field-extra-angle-brackets.rs
new file mode 100644
index 000000000..5e0e00bcb
--- /dev/null
+++ b/tests/ui/parser/recover-field-extra-angle-brackets.rs
@@ -0,0 +1,14 @@
+// Tests that we recover from extra trailing angle brackets
+// in a struct field
+
+struct BadStruct {
+    first: Vec<u8>>, //~ ERROR unmatched angle bracket
+    second: bool
+}
+
+fn bar(val: BadStruct) {
+    val.first;
+    val.second;
+}
+
+fn main() {}
diff --git a/tests/ui/parser/recover-field-extra-angle-brackets.stderr b/tests/ui/parser/recover-field-extra-angle-brackets.stderr
new file mode 100644
index 000000000..318e55f6e
--- /dev/null
+++ b/tests/ui/parser/recover-field-extra-angle-brackets.stderr
@@ -0,0 +1,8 @@
+error: unmatched angle bracket
+  --> $DIR/recover-field-extra-angle-brackets.rs:5:19
+   |
+LL |     first: Vec<u8>>,
+   |                   ^ help: remove extra angle bracket
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/recover-field-semi.rs b/tests/ui/parser/recover-field-semi.rs
new file mode 100644
index 000000000..b70357886
--- /dev/null
+++ b/tests/ui/parser/recover-field-semi.rs
@@ -0,0 +1,16 @@
+struct Foo {
+    foo: i32;
+    //~^ ERROR struct fields are separated by `,`
+}
+
+union Bar { //~ ERROR
+    foo: i32;
+    //~^ ERROR union fields are separated by `,`
+}
+
+enum Baz {
+    Qux { foo: i32; }
+    //~^ ERROR struct fields are separated by `,`
+}
+
+fn main() {}
diff --git a/tests/ui/parser/recover-field-semi.stderr b/tests/ui/parser/recover-field-semi.stderr
new file mode 100644
index 000000000..3cf484748
--- /dev/null
+++ b/tests/ui/parser/recover-field-semi.stderr
@@ -0,0 +1,35 @@
+error: struct fields are separated by `,`
+  --> $DIR/recover-field-semi.rs:2:13
+   |
+LL | struct Foo {
+   |        --- while parsing this struct
+LL |     foo: i32;
+   |             ^ help: replace `;` with `,`
+
+error: union fields are separated by `,`
+  --> $DIR/recover-field-semi.rs:7:13
+   |
+LL | union Bar {
+   |       --- while parsing this union
+LL |     foo: i32;
+   |             ^ help: replace `;` with `,`
+
+error: struct fields are separated by `,`
+  --> $DIR/recover-field-semi.rs:12:19
+   |
+LL |     Qux { foo: i32; }
+   |     ---           ^ help: replace `;` with `,`
+   |     |
+   |     while parsing this struct
+
+error: unions cannot have zero fields
+  --> $DIR/recover-field-semi.rs:6:1
+   |
+LL | / union Bar {
+LL | |     foo: i32;
+LL | |
+LL | | }
+   | |_^
+
+error: aborting due to 4 previous errors
+
diff --git a/tests/ui/parser/recover-fn-ptr-with-generics.rs b/tests/ui/parser/recover-fn-ptr-with-generics.rs
new file mode 100644
index 000000000..31de418be
--- /dev/null
+++ b/tests/ui/parser/recover-fn-ptr-with-generics.rs
@@ -0,0 +1,31 @@
+fn main() {
+    type Predicate = fn<'a>(&'a str) -> bool;
+    //~^ ERROR function pointer types may not have generic parameters
+
+    type Identity = fn<T>(T) -> T;
+    //~^ ERROR function pointer types may not have generic parameters
+    //~| ERROR cannot find type `T` in this scope
+    //~| ERROR cannot find type `T` in this scope
+
+    let _: fn<const N: usize, 'e, Q, 'f>();
+    //~^ ERROR function pointer types may not have generic parameters
+
+    let _: for<'outer> fn<'inner>();
+    //~^ ERROR function pointer types may not have generic parameters
+
+    let _: for<> fn<'r>();
+    //~^ ERROR function pointer types may not have generic parameters
+
+    type Hmm = fn<>();
+    //~^ ERROR function pointer types may not have generic parameters
+
+    let _: extern fn<'a: 'static>();
+    //~^ ERROR function pointer types may not have generic parameters
+    //~| ERROR lifetime bounds cannot be used in this context
+
+    let _: for<'any> extern "C" fn<'u>();
+    //~^ ERROR function pointer types may not have generic parameters
+
+    type QuiteBroken = fn<const>();
+    //~^ ERROR expected identifier, found `>`
+}
diff --git a/tests/ui/parser/recover-fn-ptr-with-generics.stderr b/tests/ui/parser/recover-fn-ptr-with-generics.stderr
new file mode 100644
index 000000000..1da9c1857
--- /dev/null
+++ b/tests/ui/parser/recover-fn-ptr-with-generics.stderr
@@ -0,0 +1,111 @@
+error: function pointer types may not have generic parameters
+  --> $DIR/recover-fn-ptr-with-generics.rs:2:24
+   |
+LL |     type Predicate = fn<'a>(&'a str) -> bool;
+   |                        ^^^^
+   |
+help: consider moving the lifetime parameter to a `for` parameter list
+   |
+LL -     type Predicate = fn<'a>(&'a str) -> bool;
+LL +     type Predicate = for<'a> fn(&'a str) -> bool;
+   |
+
+error: function pointer types may not have generic parameters
+  --> $DIR/recover-fn-ptr-with-generics.rs:5:23
+   |
+LL |     type Identity = fn<T>(T) -> T;
+   |                       ^^^
+
+error: function pointer types may not have generic parameters
+  --> $DIR/recover-fn-ptr-with-generics.rs:10:14
+   |
+LL |     let _: fn<const N: usize, 'e, Q, 'f>();
+   |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+help: consider moving the lifetime parameters to a `for` parameter list
+   |
+LL -     let _: fn<const N: usize, 'e, Q, 'f>();
+LL +     let _: for<'e, 'f> fn();
+   |
+
+error: function pointer types may not have generic parameters
+  --> $DIR/recover-fn-ptr-with-generics.rs:13:26
+   |
+LL |     let _: for<'outer> fn<'inner>();
+   |                          ^^^^^^^^
+   |
+help: consider moving the lifetime parameter to the `for` parameter list
+   |
+LL -     let _: for<'outer> fn<'inner>();
+LL +     let _: for<'outer, 'inner> fn();
+   |
+
+error: function pointer types may not have generic parameters
+  --> $DIR/recover-fn-ptr-with-generics.rs:16:20
+   |
+LL |     let _: for<> fn<'r>();
+   |                    ^^^^
+   |
+help: consider moving the lifetime parameter to the `for` parameter list
+   |
+LL -     let _: for<> fn<'r>();
+LL +     let _: for<'r> fn();
+   |
+
+error: function pointer types may not have generic parameters
+  --> $DIR/recover-fn-ptr-with-generics.rs:19:18
+   |
+LL |     type Hmm = fn<>();
+   |                  ^^
+
+error: function pointer types may not have generic parameters
+  --> $DIR/recover-fn-ptr-with-generics.rs:22:21
+   |
+LL |     let _: extern fn<'a: 'static>();
+   |                     ^^^^^^^^^^^^^
+   |
+help: consider moving the lifetime parameter to a `for` parameter list
+   |
+LL -     let _: extern fn<'a: 'static>();
+LL +     let _: for<'a> extern fn();
+   |
+
+error: function pointer types may not have generic parameters
+  --> $DIR/recover-fn-ptr-with-generics.rs:26:35
+   |
+LL |     let _: for<'any> extern "C" fn<'u>();
+   |                                   ^^^^
+   |
+help: consider moving the lifetime parameter to the `for` parameter list
+   |
+LL -     let _: for<'any> extern "C" fn<'u>();
+LL +     let _: for<'any, 'u> extern "C" fn();
+   |
+
+error: expected identifier, found `>`
+  --> $DIR/recover-fn-ptr-with-generics.rs:29:32
+   |
+LL |     type QuiteBroken = fn<const>();
+   |                                ^ expected identifier
+
+error: lifetime bounds cannot be used in this context
+  --> $DIR/recover-fn-ptr-with-generics.rs:22:26
+   |
+LL |     let _: extern fn<'a: 'static>();
+   |                          ^^^^^^^
+
+error[E0412]: cannot find type `T` in this scope
+  --> $DIR/recover-fn-ptr-with-generics.rs:5:27
+   |
+LL |     type Identity = fn<T>(T) -> T;
+   |                           ^ not found in this scope
+
+error[E0412]: cannot find type `T` in this scope
+  --> $DIR/recover-fn-ptr-with-generics.rs:5:33
+   |
+LL |     type Identity = fn<T>(T) -> T;
+   |                                 ^ not found in this scope
+
+error: aborting due to 12 previous errors
+
+For more information about this error, try `rustc --explain E0412`.
diff --git a/tests/ui/parser/recover-fn-trait-from-fn-kw.rs b/tests/ui/parser/recover-fn-trait-from-fn-kw.rs
new file mode 100644
index 000000000..b6611e627
--- /dev/null
+++ b/tests/ui/parser/recover-fn-trait-from-fn-kw.rs
@@ -0,0 +1,12 @@
+fn foo(_: impl fn() -> i32) {}
+//~^ ERROR expected identifier, found keyword `fn`
+
+fn foo2<T: fn(i32)>(_: T) {}
+//~^ ERROR expected identifier, found keyword `fn`
+
+fn main() {
+    foo(|| ());
+    //~^ mismatched types
+    foo2(|_: ()| {});
+    //~^ type mismatch in closure arguments
+}
diff --git a/tests/ui/parser/recover-fn-trait-from-fn-kw.stderr b/tests/ui/parser/recover-fn-trait-from-fn-kw.stderr
new file mode 100644
index 000000000..3681a796c
--- /dev/null
+++ b/tests/ui/parser/recover-fn-trait-from-fn-kw.stderr
@@ -0,0 +1,48 @@
+error: expected identifier, found keyword `fn`
+  --> $DIR/recover-fn-trait-from-fn-kw.rs:1:16
+   |
+LL | fn foo(_: impl fn() -> i32) {}
+   |                ^^
+   |
+help: use `Fn` to refer to the trait
+   |
+LL | fn foo(_: impl Fn() -> i32) {}
+   |                ~~
+
+error: expected identifier, found keyword `fn`
+  --> $DIR/recover-fn-trait-from-fn-kw.rs:4:12
+   |
+LL | fn foo2<T: fn(i32)>(_: T) {}
+   |            ^^
+   |
+help: use `Fn` to refer to the trait
+   |
+LL | fn foo2<T: Fn(i32)>(_: T) {}
+   |            ~~
+
+error[E0308]: mismatched types
+  --> $DIR/recover-fn-trait-from-fn-kw.rs:8:12
+   |
+LL |     foo(|| ());
+   |            ^^ expected `i32`, found `()`
+
+error[E0631]: type mismatch in closure arguments
+  --> $DIR/recover-fn-trait-from-fn-kw.rs:10:5
+   |
+LL |     foo2(|_: ()| {});
+   |     ^^^^ ------- found signature defined here
+   |     |
+   |     expected due to this
+   |
+   = note: expected closure signature `fn(i32) -> _`
+              found closure signature `fn(()) -> _`
+note: required by a bound in `foo2`
+  --> $DIR/recover-fn-trait-from-fn-kw.rs:4:12
+   |
+LL | fn foo2<T: fn(i32)>(_: T) {}
+   |            ^^^^^^^ required by this bound in `foo2`
+
+error: aborting due to 4 previous errors
+
+Some errors have detailed explanations: E0308, E0631.
+For more information about an error, try `rustc --explain E0308`.
diff --git a/tests/ui/parser/recover-for-loop-parens-around-head.rs b/tests/ui/parser/recover-for-loop-parens-around-head.rs
new file mode 100644
index 000000000..053b428bd
--- /dev/null
+++ b/tests/ui/parser/recover-for-loop-parens-around-head.rs
@@ -0,0 +1,15 @@
+// Here we test that the parser is able to recover in a situation like
+// `for ( $pat in $expr )` since that is familiar syntax in other languages.
+// Instead we suggest that the user writes `for $pat in $expr`.
+
+#![deny(unused)] // Make sure we don't trigger `unused_parens`.
+
+fn main() {
+    let vec = vec![1, 2, 3];
+
+    for ( elem in vec ) {
+        //~^ ERROR expected one of `)`, `,`, `@`, or `|`, found keyword `in`
+        //~| ERROR unexpected parentheses surrounding `for` loop head
+        const RECOVERY_WITNESS: () = 0; //~ ERROR mismatched types
+    }
+}
diff --git a/tests/ui/parser/recover-for-loop-parens-around-head.stderr b/tests/ui/parser/recover-for-loop-parens-around-head.stderr
new file mode 100644
index 000000000..3bad29f20
--- /dev/null
+++ b/tests/ui/parser/recover-for-loop-parens-around-head.stderr
@@ -0,0 +1,27 @@
+error: expected one of `)`, `,`, `@`, or `|`, found keyword `in`
+  --> $DIR/recover-for-loop-parens-around-head.rs:10:16
+   |
+LL |     for ( elem in vec ) {
+   |                ^^ expected one of `)`, `,`, `@`, or `|`
+
+error: unexpected parentheses surrounding `for` loop head
+  --> $DIR/recover-for-loop-parens-around-head.rs:10:9
+   |
+LL |     for ( elem in vec ) {
+   |         ^             ^
+   |
+help: remove parentheses in `for` loop
+   |
+LL -     for ( elem in vec ) {
+LL +     for  elem in vec  {
+   |
+
+error[E0308]: mismatched types
+  --> $DIR/recover-for-loop-parens-around-head.rs:13:38
+   |
+LL |         const RECOVERY_WITNESS: () = 0;
+   |                                      ^ expected `()`, found integer
+
+error: aborting due to 3 previous errors
+
+For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/parser/recover-from-bad-variant.rs b/tests/ui/parser/recover-from-bad-variant.rs
new file mode 100644
index 000000000..e8887147c
--- /dev/null
+++ b/tests/ui/parser/recover-from-bad-variant.rs
@@ -0,0 +1,15 @@
+enum Enum {
+    Foo { a: usize, b: usize },
+    Bar(usize, usize),
+}
+
+fn main() {
+    let x = Enum::Foo(a: 3, b: 4);
+    //~^ ERROR invalid `struct` delimiters or `fn` call arguments
+    match x {
+        Enum::Foo(a, b) => {}
+        //~^ ERROR expected tuple struct or tuple variant, found struct variant `Enum::Foo`
+        Enum::Bar { a, b } => {}
+        //~^ ERROR tuple variant `Enum::Bar` written as struct variant
+    }
+}
diff --git a/tests/ui/parser/recover-from-bad-variant.stderr b/tests/ui/parser/recover-from-bad-variant.stderr
new file mode 100644
index 000000000..04968bbdf
--- /dev/null
+++ b/tests/ui/parser/recover-from-bad-variant.stderr
@@ -0,0 +1,37 @@
+error: invalid `struct` delimiters or `fn` call arguments
+  --> $DIR/recover-from-bad-variant.rs:7:13
+   |
+LL |     let x = Enum::Foo(a: 3, b: 4);
+   |             ^^^^^^^^^^^^^^^^^^^^^
+   |
+help: if `Enum::Foo` is a struct, use braces as delimiters
+   |
+LL |     let x = Enum::Foo { a: 3, b: 4 };
+   |                       ~            ~
+help: if `Enum::Foo` is a function, use the arguments directly
+   |
+LL -     let x = Enum::Foo(a: 3, b: 4);
+LL +     let x = Enum::Foo(3, 4);
+   |
+
+error[E0164]: expected tuple struct or tuple variant, found struct variant `Enum::Foo`
+  --> $DIR/recover-from-bad-variant.rs:10:9
+   |
+LL |         Enum::Foo(a, b) => {}
+   |         ^^^^^^^^^^^^^^^ not a tuple struct or tuple variant
+
+error[E0769]: tuple variant `Enum::Bar` written as struct variant
+  --> $DIR/recover-from-bad-variant.rs:12:9
+   |
+LL |         Enum::Bar { a, b } => {}
+   |         ^^^^^^^^^^^^^^^^^^
+   |
+help: use the tuple variant pattern syntax instead
+   |
+LL |         Enum::Bar(a, b) => {}
+   |                  ~~~~~~
+
+error: aborting due to 3 previous errors
+
+Some errors have detailed explanations: E0164, E0769.
+For more information about an error, try `rustc --explain E0164`.
diff --git a/tests/ui/parser/recover-from-homoglyph.rs b/tests/ui/parser/recover-from-homoglyph.rs
new file mode 100644
index 000000000..99ce0d1a6
--- /dev/null
+++ b/tests/ui/parser/recover-from-homoglyph.rs
@@ -0,0 +1,4 @@
+fn main() {
+    println!(""); //~ ERROR unknown start of token: \u{37e}
+    let x: usize = (); //~ ERROR mismatched types
+}
diff --git a/tests/ui/parser/recover-from-homoglyph.stderr b/tests/ui/parser/recover-from-homoglyph.stderr
new file mode 100644
index 000000000..f11ca9fd5
--- /dev/null
+++ b/tests/ui/parser/recover-from-homoglyph.stderr
@@ -0,0 +1,22 @@
+error: unknown start of token: \u{37e}
+  --> $DIR/recover-from-homoglyph.rs:2:17
+   |
+LL |     println!("");
+   |                 ^
+   |
+help: Unicode character ';' (Greek Question Mark) looks like ';' (Semicolon), but it is not
+   |
+LL |     println!("");
+   |                 ~
+
+error[E0308]: mismatched types
+  --> $DIR/recover-from-homoglyph.rs:3:20
+   |
+LL |     let x: usize = ();
+   |            -----   ^^ expected `usize`, found `()`
+   |            |
+   |            expected due to this
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/parser/recover-labeled-non-block-expr.fixed b/tests/ui/parser/recover-labeled-non-block-expr.fixed
new file mode 100644
index 000000000..c2e76444d
--- /dev/null
+++ b/tests/ui/parser/recover-labeled-non-block-expr.fixed
@@ -0,0 +1,26 @@
+// run-rustfix
+fn main() {
+    let _ = 1 + 1; //~ ERROR expected `while`, `for`, `loop` or `{` after a label
+
+    match () { () => {}, }; //~ ERROR expected `while`, `for`, `loop` or `{` after a label
+    'label: { match () { () => break 'label, } }; //~ ERROR expected `while`, `for`, `loop` or `{` after a label
+    #[allow(unused_labels)]
+    'label: { match () { () => 'lp: loop { break 'lp 0 }, } }; //~ ERROR expected `while`, `for`, `loop` or `{` after a label
+
+    let x = 1;
+    let _i = 'label: { match x { //~ ERROR expected `while`, `for`, `loop` or `{` after a label
+        0 => 42,
+        1 if false => break 'label 17,
+        1 => {
+            if true {
+                break 'label 13
+            } else {
+                break 'label 0;
+            }
+        }
+        _ => 1,
+    } };
+
+    let other = 3;
+    let _val = 'label: { (1, if other == 3 { break 'label (2, 3) } else { other }) }; //~ ERROR expected `while`, `for`, `loop` or `{` after a label
+}
diff --git a/tests/ui/parser/recover-labeled-non-block-expr.rs b/tests/ui/parser/recover-labeled-non-block-expr.rs
new file mode 100644
index 000000000..fc11c646a
--- /dev/null
+++ b/tests/ui/parser/recover-labeled-non-block-expr.rs
@@ -0,0 +1,26 @@
+// run-rustfix
+fn main() {
+    let _ = 'label: 1 + 1; //~ ERROR expected `while`, `for`, `loop` or `{` after a label
+
+    'label: match () { () => {}, }; //~ ERROR expected `while`, `for`, `loop` or `{` after a label
+    'label: match () { () => break 'label, }; //~ ERROR expected `while`, `for`, `loop` or `{` after a label
+    #[allow(unused_labels)]
+    'label: match () { () => 'lp: loop { break 'lp 0 }, }; //~ ERROR expected `while`, `for`, `loop` or `{` after a label
+
+    let x = 1;
+    let _i = 'label: match x { //~ ERROR expected `while`, `for`, `loop` or `{` after a label
+        0 => 42,
+        1 if false => break 'label 17,
+        1 => {
+            if true {
+                break 'label 13
+            } else {
+                break 'label 0;
+            }
+        }
+        _ => 1,
+    };
+
+    let other = 3;
+    let _val = 'label: (1, if other == 3 { break 'label (2, 3) } else { other }); //~ ERROR expected `while`, `for`, `loop` or `{` after a label
+}
diff --git a/tests/ui/parser/recover-labeled-non-block-expr.stderr b/tests/ui/parser/recover-labeled-non-block-expr.stderr
new file mode 100644
index 000000000..d66ce6950
--- /dev/null
+++ b/tests/ui/parser/recover-labeled-non-block-expr.stderr
@@ -0,0 +1,74 @@
+error: expected `while`, `for`, `loop` or `{` after a label
+  --> $DIR/recover-labeled-non-block-expr.rs:3:21
+   |
+LL |     let _ = 'label: 1 + 1;
+   |                     ^ expected `while`, `for`, `loop` or `{` after a label
+   |
+help: consider removing the label
+   |
+LL -     let _ = 'label: 1 + 1;
+LL +     let _ = 1 + 1;
+   |
+
+error: expected `while`, `for`, `loop` or `{` after a label
+  --> $DIR/recover-labeled-non-block-expr.rs:5:13
+   |
+LL |     'label: match () { () => {}, };
+   |             ^^^^^ expected `while`, `for`, `loop` or `{` after a label
+   |
+help: consider removing the label
+   |
+LL -     'label: match () { () => {}, };
+LL +     match () { () => {}, };
+   |
+
+error: expected `while`, `for`, `loop` or `{` after a label
+  --> $DIR/recover-labeled-non-block-expr.rs:6:13
+   |
+LL |     'label: match () { () => break 'label, };
+   |             ^^^^^ expected `while`, `for`, `loop` or `{` after a label
+   |
+help: consider enclosing expression in a block
+   |
+LL |     'label: { match () { () => break 'label, } };
+   |             +                                  +
+
+error: expected `while`, `for`, `loop` or `{` after a label
+  --> $DIR/recover-labeled-non-block-expr.rs:8:13
+   |
+LL |     'label: match () { () => 'lp: loop { break 'lp 0 }, };
+   |             ^^^^^ expected `while`, `for`, `loop` or `{` after a label
+   |
+help: consider enclosing expression in a block
+   |
+LL |     'label: { match () { () => 'lp: loop { break 'lp 0 }, } };
+   |             +                                               +
+
+error: expected `while`, `for`, `loop` or `{` after a label
+  --> $DIR/recover-labeled-non-block-expr.rs:11:22
+   |
+LL |     let _i = 'label: match x {
+   |                      ^^^^^ expected `while`, `for`, `loop` or `{` after a label
+   |
+help: consider enclosing expression in a block
+   |
+LL ~     let _i = 'label: { match x {
+LL |         0 => 42,
+ ...
+LL |         _ => 1,
+LL ~     } };
+   |
+
+error: expected `while`, `for`, `loop` or `{` after a label
+  --> $DIR/recover-labeled-non-block-expr.rs:25:24
+   |
+LL |     let _val = 'label: (1, if other == 3 { break 'label (2, 3) } else { other });
+   |                        ^ expected `while`, `for`, `loop` or `{` after a label
+   |
+help: consider enclosing expression in a block
+   |
+LL |     let _val = 'label: { (1, if other == 3 { break 'label (2, 3) } else { other }) };
+   |                        +                                                           +
+
+error: aborting due to 6 previous errors
+
diff --git a/tests/ui/parser/recover-missing-semi-before-item.fixed b/tests/ui/parser/recover-missing-semi-before-item.fixed
new file mode 100644
index 000000000..0be17e69e
--- /dev/null
+++ b/tests/ui/parser/recover-missing-semi-before-item.fixed
@@ -0,0 +1,61 @@
+// run-rustfix
+
+#![allow(unused_variables, dead_code)]
+
+fn for_struct() {
+    let foo = 3; //~ ERROR expected `;`, found keyword `struct`
+    struct Foo;
+}
+
+fn for_union() {
+    let foo = 3; //~ ERROR expected `;`, found `union`
+    union Foo {
+        foo: usize,
+    }
+}
+
+fn for_enum() {
+    let foo = 3; //~ ERROR expected `;`, found keyword `enum`
+    enum Foo {
+        Bar,
+    }
+}
+
+fn for_fn() {
+    let foo = 3; //~ ERROR expected `;`, found keyword `fn`
+    fn foo() {}
+}
+
+fn for_extern() {
+    let foo = 3; //~ ERROR expected `;`, found keyword `extern`
+    extern fn foo() {}
+}
+
+fn for_impl() {
+    struct Foo;
+    let foo = 3; //~ ERROR expected `;`, found keyword `impl`
+    impl Foo {}
+}
+
+fn for_use() {
+    let foo = 3; //~ ERROR expected `;`, found keyword `pub`
+    pub use bar::Bar;
+}
+
+fn for_mod() {
+    let foo = 3; //~ ERROR expected `;`, found keyword `mod`
+    mod foo {}
+}
+
+fn for_type() {
+    let foo = 3; //~ ERROR expected `;`, found keyword `type`
+    type Foo = usize;
+}
+
+mod bar {
+    pub struct Bar;
+}
+
+const X: i32 = 123; //~ ERROR expected `;`, found keyword `fn`
+
+fn main() {}
diff --git a/tests/ui/parser/recover-missing-semi-before-item.rs b/tests/ui/parser/recover-missing-semi-before-item.rs
new file mode 100644
index 000000000..867b7b749
--- /dev/null
+++ b/tests/ui/parser/recover-missing-semi-before-item.rs
@@ -0,0 +1,61 @@
+// run-rustfix
+
+#![allow(unused_variables, dead_code)]
+
+fn for_struct() {
+    let foo = 3 //~ ERROR expected `;`, found keyword `struct`
+    struct Foo;
+}
+
+fn for_union() {
+    let foo = 3 //~ ERROR expected `;`, found `union`
+    union Foo {
+        foo: usize,
+    }
+}
+
+fn for_enum() {
+    let foo = 3 //~ ERROR expected `;`, found keyword `enum`
+    enum Foo {
+        Bar,
+    }
+}
+
+fn for_fn() {
+    let foo = 3 //~ ERROR expected `;`, found keyword `fn`
+    fn foo() {}
+}
+
+fn for_extern() {
+    let foo = 3 //~ ERROR expected `;`, found keyword `extern`
+    extern fn foo() {}
+}
+
+fn for_impl() {
+    struct Foo;
+    let foo = 3 //~ ERROR expected `;`, found keyword `impl`
+    impl Foo {}
+}
+
+fn for_use() {
+    let foo = 3 //~ ERROR expected `;`, found keyword `pub`
+    pub use bar::Bar;
+}
+
+fn for_mod() {
+    let foo = 3 //~ ERROR expected `;`, found keyword `mod`
+    mod foo {}
+}
+
+fn for_type() {
+    let foo = 3 //~ ERROR expected `;`, found keyword `type`
+    type Foo = usize;
+}
+
+mod bar {
+    pub struct Bar;
+}
+
+const X: i32 = 123 //~ ERROR expected `;`, found keyword `fn`
+
+fn main() {}
diff --git a/tests/ui/parser/recover-missing-semi-before-item.stderr b/tests/ui/parser/recover-missing-semi-before-item.stderr
new file mode 100644
index 000000000..61c43f2f1
--- /dev/null
+++ b/tests/ui/parser/recover-missing-semi-before-item.stderr
@@ -0,0 +1,83 @@
+error: expected `;`, found keyword `struct`
+  --> $DIR/recover-missing-semi-before-item.rs:6:16
+   |
+LL |     let foo = 3
+   |                ^ help: add `;` here
+LL |     struct Foo;
+   |     ------ unexpected token
+
+error: expected `;`, found `union`
+  --> $DIR/recover-missing-semi-before-item.rs:11:16
+   |
+LL |     let foo = 3
+   |                ^ help: add `;` here
+LL |     union Foo {
+   |     ----- unexpected token
+
+error: expected `;`, found keyword `enum`
+  --> $DIR/recover-missing-semi-before-item.rs:18:16
+   |
+LL |     let foo = 3
+   |                ^ help: add `;` here
+LL |     enum Foo {
+   |     ---- unexpected token
+
+error: expected `;`, found keyword `fn`
+  --> $DIR/recover-missing-semi-before-item.rs:25:16
+   |
+LL |     let foo = 3
+   |                ^ help: add `;` here
+LL |     fn foo() {}
+   |     -- unexpected token
+
+error: expected `;`, found keyword `extern`
+  --> $DIR/recover-missing-semi-before-item.rs:30:16
+   |
+LL |     let foo = 3
+   |                ^ help: add `;` here
+LL |     extern fn foo() {}
+   |     ------ unexpected token
+
+error: expected `;`, found keyword `impl`
+  --> $DIR/recover-missing-semi-before-item.rs:36:16
+   |
+LL |     let foo = 3
+   |                ^ help: add `;` here
+LL |     impl Foo {}
+   |     ---- unexpected token
+
+error: expected `;`, found keyword `pub`
+  --> $DIR/recover-missing-semi-before-item.rs:41:16
+   |
+LL |     let foo = 3
+   |                ^ help: add `;` here
+LL |     pub use bar::Bar;
+   |     --- unexpected token
+
+error: expected `;`, found keyword `mod`
+  --> $DIR/recover-missing-semi-before-item.rs:46:16
+   |
+LL |     let foo = 3
+   |                ^ help: add `;` here
+LL |     mod foo {}
+   |     --- unexpected token
+
+error: expected `;`, found keyword `type`
+  --> $DIR/recover-missing-semi-before-item.rs:51:16
+   |
+LL |     let foo = 3
+   |                ^ help: add `;` here
+LL |     type Foo = usize;
+   |     ---- unexpected token
+
+error: expected `;`, found keyword `fn`
+  --> $DIR/recover-missing-semi-before-item.rs:59:19
+   |
+LL | const X: i32 = 123
+   |                   ^ help: add `;` here
+LL |
+LL | fn main() {}
+   | -- unexpected token
+
+error: aborting due to 10 previous errors
+
diff --git a/tests/ui/parser/recover-missing-semi.rs b/tests/ui/parser/recover-missing-semi.rs
new file mode 100644
index 000000000..f47d5e680
--- /dev/null
+++ b/tests/ui/parser/recover-missing-semi.rs
@@ -0,0 +1,13 @@
+fn main() {
+    let _: usize = ()
+    //~^ ERROR mismatched types
+    //~| ERROR expected `;`
+    let _ = 3;
+}
+
+fn foo() -> usize {
+    let _: usize = ()
+    //~^ ERROR mismatched types
+    //~| ERROR expected `;`
+    return 3;
+}
diff --git a/tests/ui/parser/recover-missing-semi.stderr b/tests/ui/parser/recover-missing-semi.stderr
new file mode 100644
index 000000000..ba4798285
--- /dev/null
+++ b/tests/ui/parser/recover-missing-semi.stderr
@@ -0,0 +1,37 @@
+error: expected `;`, found keyword `let`
+  --> $DIR/recover-missing-semi.rs:2:22
+   |
+LL |     let _: usize = ()
+   |                      ^ help: add `;` here
+...
+LL |     let _ = 3;
+   |     --- unexpected token
+
+error: expected `;`, found keyword `return`
+  --> $DIR/recover-missing-semi.rs:9:22
+   |
+LL |     let _: usize = ()
+   |                      ^ help: add `;` here
+...
+LL |     return 3;
+   |     ------ unexpected token
+
+error[E0308]: mismatched types
+  --> $DIR/recover-missing-semi.rs:2:20
+   |
+LL |     let _: usize = ()
+   |            -----   ^^ expected `usize`, found `()`
+   |            |
+   |            expected due to this
+
+error[E0308]: mismatched types
+  --> $DIR/recover-missing-semi.rs:9:20
+   |
+LL |     let _: usize = ()
+   |            -----   ^^ expected `usize`, found `()`
+   |            |
+   |            expected due to this
+
+error: aborting due to 4 previous errors
+
+For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/parser/recover-quantified-closure.rs b/tests/ui/parser/recover-quantified-closure.rs
new file mode 100644
index 000000000..df22f5e06
--- /dev/null
+++ b/tests/ui/parser/recover-quantified-closure.rs
@@ -0,0 +1,12 @@
+fn main() {
+    for<'a> |x: &'a u8| *x + 1;
+    //~^ ERROR `for<...>` binders for closures are experimental
+    //~^^ ERROR implicit types in closure signatures are forbidden when `for<...>` is present
+}
+
+enum Foo { Bar }
+fn foo(x: impl Iterator<Item = Foo>) {
+    for <Foo>::Bar in x {}
+    //~^ ERROR expected one of `const`, `move`, `static`, `|`
+    //~^^ ERROR `for<...>` binders for closures are experimental
+}
diff --git a/tests/ui/parser/recover-quantified-closure.stderr b/tests/ui/parser/recover-quantified-closure.stderr
new file mode 100644
index 000000000..9ec4d2c03
--- /dev/null
+++ b/tests/ui/parser/recover-quantified-closure.stderr
@@ -0,0 +1,37 @@
+error: expected one of `const`, `move`, `static`, `|`, or `||`, found `::`
+  --> $DIR/recover-quantified-closure.rs:9:14
+   |
+LL |     for <Foo>::Bar in x {}
+   |              ^^ expected one of `const`, `move`, `static`, `|`, or `||`
+
+error[E0658]: `for<...>` binders for closures are experimental
+  --> $DIR/recover-quantified-closure.rs:2:5
+   |
+LL |     for<'a> |x: &'a u8| *x + 1;
+   |     ^^^^^^^
+   |
+   = note: see issue #97362 <https://github.com/rust-lang/rust/issues/97362> for more information
+   = help: add `#![feature(closure_lifetime_binder)]` to the crate attributes to enable
+   = help: consider removing `for<...>`
+
+error[E0658]: `for<...>` binders for closures are experimental
+  --> $DIR/recover-quantified-closure.rs:9:5
+   |
+LL |     for <Foo>::Bar in x {}
+   |     ^^^^^^^^^
+   |
+   = note: see issue #97362 <https://github.com/rust-lang/rust/issues/97362> for more information
+   = help: add `#![feature(closure_lifetime_binder)]` to the crate attributes to enable
+   = help: consider removing `for<...>`
+
+error: implicit types in closure signatures are forbidden when `for<...>` is present
+  --> $DIR/recover-quantified-closure.rs:2:25
+   |
+LL |     for<'a> |x: &'a u8| *x + 1;
+   |     -------             ^
+   |     |
+   |     `for<...>` is here
+
+error: aborting due to 4 previous errors
+
+For more information about this error, try `rustc --explain E0658`.
diff --git a/tests/ui/parser/recover-range-pats.rs b/tests/ui/parser/recover-range-pats.rs
new file mode 100644
index 000000000..156c7ad94
--- /dev/null
+++ b/tests/ui/parser/recover-range-pats.rs
@@ -0,0 +1,159 @@
+// Here we test all kinds of range patterns in terms of parsing / recovery.
+// We want to ensure that:
+// 1. Things parse as they should.
+// 2. Or at least we have parser recovery if they don't.
+
+#![feature(exclusive_range_pattern)]
+#![deny(ellipsis_inclusive_range_patterns)]
+
+fn main() {}
+
+const X: u8 = 0;
+const Y: u8 = 3;
+
+fn exclusive_from_to() {
+    if let 0..3 = 0 {} // OK.
+    if let 0..Y = 0 {} // OK.
+    if let X..3 = 0 {} // OK.
+    if let X..Y = 0 {} // OK.
+    if let true..Y = 0 {} //~ ERROR only `char` and numeric types
+    if let X..true = 0 {} //~ ERROR only `char` and numeric types
+    if let .0..Y = 0 {} //~ ERROR mismatched types
+    //~^ ERROR float literals must have an integer part
+    if let X.. .0 = 0 {} //~ ERROR mismatched types
+    //~^ ERROR float literals must have an integer part
+}
+
+fn inclusive_from_to() {
+    if let 0..=3 = 0 {} // OK.
+    if let 0..=Y = 0 {} // OK.
+    if let X..=3 = 0 {} // OK.
+    if let X..=Y = 0 {} // OK.
+    if let true..=Y = 0 {} //~ ERROR only `char` and numeric types
+    if let X..=true = 0 {} //~ ERROR only `char` and numeric types
+    if let .0..=Y = 0 {} //~ ERROR mismatched types
+    //~^ ERROR float literals must have an integer part
+    if let X..=.0 = 0 {} //~ ERROR mismatched types
+    //~^ ERROR float literals must have an integer part
+}
+
+fn inclusive2_from_to() {
+    if let 0...3 = 0 {}
+    //~^ ERROR `...` range patterns are deprecated
+    //~| WARN this is accepted in the current edition
+    if let 0...Y = 0 {}
+    //~^ ERROR `...` range patterns are deprecated
+    //~| WARN this is accepted in the current edition
+    if let X...3 = 0 {}
+    //~^ ERROR `...` range patterns are deprecated
+    //~| WARN this is accepted in the current edition
+    if let X...Y = 0 {}
+    //~^ ERROR `...` range patterns are deprecated
+    //~| WARN this is accepted in the current edition
+    if let true...Y = 0 {} //~ ERROR only `char` and numeric types
+    //~^ ERROR `...` range patterns are deprecated
+    //~| WARN this is accepted in the current edition
+    if let X...true = 0 {} //~ ERROR only `char` and numeric types
+    //~^ ERROR `...` range patterns are deprecated
+    //~| WARN this is accepted in the current edition
+    if let .0...Y = 0 {} //~ ERROR mismatched types
+    //~^ ERROR float literals must have an integer part
+    //~| WARN this is accepted in the current edition
+    //~| ERROR `...` range patterns are deprecated
+    if let X... .0 = 0 {} //~ ERROR mismatched types
+    //~^ ERROR float literals must have an integer part
+    //~| ERROR `...` range patterns are deprecated
+    //~| WARN this is accepted in the current edition
+}
+
+fn exclusive_from() {
+    if let 0.. = 0 {}
+    if let X.. = 0 {}
+    if let true.. = 0 {}
+    //~^ ERROR only `char` and numeric types
+    if let .0.. = 0 {}
+    //~^ ERROR float literals must have an integer part
+    //~| ERROR mismatched types
+}
+
+fn inclusive_from() {
+    if let 0..= = 0 {} //~ ERROR inclusive range with no end
+    if let X..= = 0 {} //~ ERROR inclusive range with no end
+    if let true..= = 0 {} //~ ERROR inclusive range with no end
+    //~| ERROR only `char` and numeric types
+    if let .0..= = 0 {} //~ ERROR inclusive range with no end
+    //~^ ERROR float literals must have an integer part
+    //~| ERROR mismatched types
+}
+
+fn inclusive2_from() {
+    if let 0... = 0 {} //~ ERROR inclusive range with no end
+    if let X... = 0 {} //~ ERROR inclusive range with no end
+    if let true... = 0 {} //~ ERROR inclusive range with no end
+    //~| ERROR only `char` and numeric types
+    if let .0... = 0 {} //~ ERROR inclusive range with no end
+    //~^ ERROR float literals must have an integer part
+    //~| ERROR mismatched types
+}
+
+fn exclusive_to() {
+    if let ..0 = 0 {}
+    if let ..Y = 0 {}
+    if let ..true = 0 {}
+    //~^ ERROR only `char` and numeric types
+    if let .. .0 = 0 {}
+    //~^ ERROR float literals must have an integer part
+    //~| ERROR mismatched types
+}
+
+fn inclusive_to() {
+    if let ..=3 = 0 {}
+    if let ..=Y = 0 {}
+    if let ..=true = 0 {}
+    //~^ ERROR only `char` and numeric types
+    if let ..=.0 = 0 {}
+    //~^ ERROR float literals must have an integer part
+    //~| ERROR mismatched types
+}
+
+fn inclusive2_to() {
+    if let ...3 = 0 {}
+    //~^ ERROR range-to patterns with `...` are not allowed
+    if let ...Y = 0 {}
+    //~^ ERROR range-to patterns with `...` are not allowed
+    if let ...true = 0 {}
+    //~^ ERROR range-to patterns with `...` are not allowed
+    //~| ERROR only `char` and numeric types
+    if let ....3 = 0 {}
+    //~^ ERROR float literals must have an integer part
+    //~| ERROR range-to patterns with `...` are not allowed
+    //~| ERROR mismatched types
+}
+
+fn with_macro_expr_var() {
+    macro_rules! mac2 {
+        ($e1:expr, $e2:expr) => {
+            let $e1..$e2;
+            let $e1...$e2;
+            //~^ ERROR `...` range patterns are deprecated
+            //~| WARN this is accepted in the current edition
+            let $e1..=$e2;
+        }
+    }
+
+    mac2!(0, 1);
+
+    macro_rules! mac {
+        ($e:expr) => {
+            let ..$e;
+            let ...$e;
+            //~^ ERROR range-to patterns with `...` are not allowed
+            let ..=$e;
+            let $e..;
+            let $e...; //~ ERROR inclusive range with no end
+            let $e..=; //~ ERROR inclusive range with no end
+        }
+    }
+
+    mac!(0);
+}
diff --git a/tests/ui/parser/recover-range-pats.stderr b/tests/ui/parser/recover-range-pats.stderr
new file mode 100644
index 000000000..c54f13e01
--- /dev/null
+++ b/tests/ui/parser/recover-range-pats.stderr
@@ -0,0 +1,484 @@
+error: float literals must have an integer part
+  --> $DIR/recover-range-pats.rs:21:12
+   |
+LL |     if let .0..Y = 0 {}
+   |            ^^ help: must have an integer part: `0.0`
+
+error: float literals must have an integer part
+  --> $DIR/recover-range-pats.rs:23:16
+   |
+LL |     if let X.. .0 = 0 {}
+   |                ^^ help: must have an integer part: `0.0`
+
+error: float literals must have an integer part
+  --> $DIR/recover-range-pats.rs:34:12
+   |
+LL |     if let .0..=Y = 0 {}
+   |            ^^ help: must have an integer part: `0.0`
+
+error: float literals must have an integer part
+  --> $DIR/recover-range-pats.rs:36:16
+   |
+LL |     if let X..=.0 = 0 {}
+   |                ^^ help: must have an integer part: `0.0`
+
+error: float literals must have an integer part
+  --> $DIR/recover-range-pats.rs:59:12
+   |
+LL |     if let .0...Y = 0 {}
+   |            ^^ help: must have an integer part: `0.0`
+
+error: float literals must have an integer part
+  --> $DIR/recover-range-pats.rs:63:17
+   |
+LL |     if let X... .0 = 0 {}
+   |                 ^^ help: must have an integer part: `0.0`
+
+error: float literals must have an integer part
+  --> $DIR/recover-range-pats.rs:74:12
+   |
+LL |     if let .0.. = 0 {}
+   |            ^^ help: must have an integer part: `0.0`
+
+error[E0586]: inclusive range with no end
+  --> $DIR/recover-range-pats.rs:80:13
+   |
+LL |     if let 0..= = 0 {}
+   |             ^^^ help: use `..` instead
+   |
+   = note: inclusive ranges must be bounded at the end (`..=b` or `a..=b`)
+
+error[E0586]: inclusive range with no end
+  --> $DIR/recover-range-pats.rs:81:13
+   |
+LL |     if let X..= = 0 {}
+   |             ^^^ help: use `..` instead
+   |
+   = note: inclusive ranges must be bounded at the end (`..=b` or `a..=b`)
+
+error[E0586]: inclusive range with no end
+  --> $DIR/recover-range-pats.rs:82:16
+   |
+LL |     if let true..= = 0 {}
+   |                ^^^ help: use `..` instead
+   |
+   = note: inclusive ranges must be bounded at the end (`..=b` or `a..=b`)
+
+error: float literals must have an integer part
+  --> $DIR/recover-range-pats.rs:84:12
+   |
+LL |     if let .0..= = 0 {}
+   |            ^^ help: must have an integer part: `0.0`
+
+error[E0586]: inclusive range with no end
+  --> $DIR/recover-range-pats.rs:84:14
+   |
+LL |     if let .0..= = 0 {}
+   |              ^^^ help: use `..` instead
+   |
+   = note: inclusive ranges must be bounded at the end (`..=b` or `a..=b`)
+
+error[E0586]: inclusive range with no end
+  --> $DIR/recover-range-pats.rs:90:13
+   |
+LL |     if let 0... = 0 {}
+   |             ^^^ help: use `..` instead
+   |
+   = note: inclusive ranges must be bounded at the end (`..=b` or `a..=b`)
+
+error[E0586]: inclusive range with no end
+  --> $DIR/recover-range-pats.rs:91:13
+   |
+LL |     if let X... = 0 {}
+   |             ^^^ help: use `..` instead
+   |
+   = note: inclusive ranges must be bounded at the end (`..=b` or `a..=b`)
+
+error[E0586]: inclusive range with no end
+  --> $DIR/recover-range-pats.rs:92:16
+   |
+LL |     if let true... = 0 {}
+   |                ^^^ help: use `..` instead
+   |
+   = note: inclusive ranges must be bounded at the end (`..=b` or `a..=b`)
+
+error: float literals must have an integer part
+  --> $DIR/recover-range-pats.rs:94:12
+   |
+LL |     if let .0... = 0 {}
+   |            ^^ help: must have an integer part: `0.0`
+
+error[E0586]: inclusive range with no end
+  --> $DIR/recover-range-pats.rs:94:14
+   |
+LL |     if let .0... = 0 {}
+   |              ^^^ help: use `..` instead
+   |
+   = note: inclusive ranges must be bounded at the end (`..=b` or `a..=b`)
+
+error: float literals must have an integer part
+  --> $DIR/recover-range-pats.rs:104:15
+   |
+LL |     if let .. .0 = 0 {}
+   |               ^^ help: must have an integer part: `0.0`
+
+error: float literals must have an integer part
+  --> $DIR/recover-range-pats.rs:114:15
+   |
+LL |     if let ..=.0 = 0 {}
+   |               ^^ help: must have an integer part: `0.0`
+
+error: range-to patterns with `...` are not allowed
+  --> $DIR/recover-range-pats.rs:120:12
+   |
+LL |     if let ...3 = 0 {}
+   |            ^^^ help: use `..=` instead
+
+error: range-to patterns with `...` are not allowed
+  --> $DIR/recover-range-pats.rs:122:12
+   |
+LL |     if let ...Y = 0 {}
+   |            ^^^ help: use `..=` instead
+
+error: range-to patterns with `...` are not allowed
+  --> $DIR/recover-range-pats.rs:124:12
+   |
+LL |     if let ...true = 0 {}
+   |            ^^^ help: use `..=` instead
+
+error: float literals must have an integer part
+  --> $DIR/recover-range-pats.rs:127:15
+   |
+LL |     if let ....3 = 0 {}
+   |               ^^ help: must have an integer part: `0.3`
+
+error: range-to patterns with `...` are not allowed
+  --> $DIR/recover-range-pats.rs:127:12
+   |
+LL |     if let ....3 = 0 {}
+   |            ^^^ help: use `..=` instead
+
+error: range-to patterns with `...` are not allowed
+  --> $DIR/recover-range-pats.rs:149:17
+   |
+LL |             let ...$e;
+   |                 ^^^ help: use `..=` instead
+...
+LL |     mac!(0);
+   |     ------- in this macro invocation
+   |
+   = note: this error originates in the macro `mac` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error[E0586]: inclusive range with no end
+  --> $DIR/recover-range-pats.rs:153:19
+   |
+LL |             let $e...;
+   |                   ^^^ help: use `..` instead
+...
+LL |     mac!(0);
+   |     ------- in this macro invocation
+   |
+   = note: inclusive ranges must be bounded at the end (`..=b` or `a..=b`)
+   = note: this error originates in the macro `mac` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error[E0586]: inclusive range with no end
+  --> $DIR/recover-range-pats.rs:154:19
+   |
+LL |             let $e..=;
+   |                   ^^^ help: use `..` instead
+...
+LL |     mac!(0);
+   |     ------- in this macro invocation
+   |
+   = note: inclusive ranges must be bounded at the end (`..=b` or `a..=b`)
+   = note: this error originates in the macro `mac` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: `...` range patterns are deprecated
+  --> $DIR/recover-range-pats.rs:41:13
+   |
+LL |     if let 0...3 = 0 {}
+   |             ^^^ help: use `..=` for an inclusive range
+   |
+   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
+   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
+note: the lint level is defined here
+  --> $DIR/recover-range-pats.rs:7:9
+   |
+LL | #![deny(ellipsis_inclusive_range_patterns)]
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: `...` range patterns are deprecated
+  --> $DIR/recover-range-pats.rs:44:13
+   |
+LL |     if let 0...Y = 0 {}
+   |             ^^^ help: use `..=` for an inclusive range
+   |
+   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
+   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
+
+error: `...` range patterns are deprecated
+  --> $DIR/recover-range-pats.rs:47:13
+   |
+LL |     if let X...3 = 0 {}
+   |             ^^^ help: use `..=` for an inclusive range
+   |
+   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
+   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
+
+error: `...` range patterns are deprecated
+  --> $DIR/recover-range-pats.rs:50:13
+   |
+LL |     if let X...Y = 0 {}
+   |             ^^^ help: use `..=` for an inclusive range
+   |
+   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
+   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
+
+error: `...` range patterns are deprecated
+  --> $DIR/recover-range-pats.rs:53:16
+   |
+LL |     if let true...Y = 0 {}
+   |                ^^^ help: use `..=` for an inclusive range
+   |
+   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
+   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
+
+error: `...` range patterns are deprecated
+  --> $DIR/recover-range-pats.rs:56:13
+   |
+LL |     if let X...true = 0 {}
+   |             ^^^ help: use `..=` for an inclusive range
+   |
+   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
+   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
+
+error: `...` range patterns are deprecated
+  --> $DIR/recover-range-pats.rs:59:14
+   |
+LL |     if let .0...Y = 0 {}
+   |              ^^^ help: use `..=` for an inclusive range
+   |
+   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
+   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
+
+error: `...` range patterns are deprecated
+  --> $DIR/recover-range-pats.rs:63:13
+   |
+LL |     if let X... .0 = 0 {}
+   |             ^^^ help: use `..=` for an inclusive range
+   |
+   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
+   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
+
+error: `...` range patterns are deprecated
+  --> $DIR/recover-range-pats.rs:137:20
+   |
+LL |             let $e1...$e2;
+   |                    ^^^ help: use `..=` for an inclusive range
+...
+LL |     mac2!(0, 1);
+   |     ----------- in this macro invocation
+   |
+   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
+   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
+   = note: this error originates in the macro `mac2` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error[E0029]: only `char` and numeric types are allowed in range patterns
+  --> $DIR/recover-range-pats.rs:19:12
+   |
+LL |     if let true..Y = 0 {}
+   |            ^^^^  - this is of type `u8`
+   |            |
+   |            this is of type `bool` but it should be `char` or numeric
+
+error[E0029]: only `char` and numeric types are allowed in range patterns
+  --> $DIR/recover-range-pats.rs:20:15
+   |
+LL |     if let X..true = 0 {}
+   |            -  ^^^^ this is of type `bool` but it should be `char` or numeric
+   |            |
+   |            this is of type `u8`
+
+error[E0308]: mismatched types
+  --> $DIR/recover-range-pats.rs:21:12
+   |
+LL |     if let .0..Y = 0 {}
+   |            ^^  -   - this expression has type `{integer}`
+   |            |   |
+   |            |   this is of type `u8`
+   |            expected integer, found floating-point number
+
+error[E0308]: mismatched types
+  --> $DIR/recover-range-pats.rs:23:16
+   |
+LL |     if let X.. .0 = 0 {}
+   |            -   ^^   - this expression has type `u8`
+   |            |   |
+   |            |   expected integer, found floating-point number
+   |            this is of type `u8`
+   |
+   = note: expected type `u8`
+              found type `{float}`
+
+error[E0029]: only `char` and numeric types are allowed in range patterns
+  --> $DIR/recover-range-pats.rs:32:12
+   |
+LL |     if let true..=Y = 0 {}
+   |            ^^^^   - this is of type `u8`
+   |            |
+   |            this is of type `bool` but it should be `char` or numeric
+
+error[E0029]: only `char` and numeric types are allowed in range patterns
+  --> $DIR/recover-range-pats.rs:33:16
+   |
+LL |     if let X..=true = 0 {}
+   |            -   ^^^^ this is of type `bool` but it should be `char` or numeric
+   |            |
+   |            this is of type `u8`
+
+error[E0308]: mismatched types
+  --> $DIR/recover-range-pats.rs:34:12
+   |
+LL |     if let .0..=Y = 0 {}
+   |            ^^   -   - this expression has type `{integer}`
+   |            |    |
+   |            |    this is of type `u8`
+   |            expected integer, found floating-point number
+
+error[E0308]: mismatched types
+  --> $DIR/recover-range-pats.rs:36:16
+   |
+LL |     if let X..=.0 = 0 {}
+   |            -   ^^   - this expression has type `u8`
+   |            |   |
+   |            |   expected integer, found floating-point number
+   |            this is of type `u8`
+   |
+   = note: expected type `u8`
+              found type `{float}`
+
+error[E0029]: only `char` and numeric types are allowed in range patterns
+  --> $DIR/recover-range-pats.rs:53:12
+   |
+LL |     if let true...Y = 0 {}
+   |            ^^^^   - this is of type `u8`
+   |            |
+   |            this is of type `bool` but it should be `char` or numeric
+
+error[E0029]: only `char` and numeric types are allowed in range patterns
+  --> $DIR/recover-range-pats.rs:56:16
+   |
+LL |     if let X...true = 0 {}
+   |            -   ^^^^ this is of type `bool` but it should be `char` or numeric
+   |            |
+   |            this is of type `u8`
+
+error[E0308]: mismatched types
+  --> $DIR/recover-range-pats.rs:59:12
+   |
+LL |     if let .0...Y = 0 {}
+   |            ^^   -   - this expression has type `{integer}`
+   |            |    |
+   |            |    this is of type `u8`
+   |            expected integer, found floating-point number
+
+error[E0308]: mismatched types
+  --> $DIR/recover-range-pats.rs:63:17
+   |
+LL |     if let X... .0 = 0 {}
+   |            -    ^^   - this expression has type `u8`
+   |            |    |
+   |            |    expected integer, found floating-point number
+   |            this is of type `u8`
+   |
+   = note: expected type `u8`
+              found type `{float}`
+
+error[E0029]: only `char` and numeric types are allowed in range patterns
+  --> $DIR/recover-range-pats.rs:72:12
+   |
+LL |     if let true.. = 0 {}
+   |            ^^^^ this is of type `bool` but it should be `char` or numeric
+
+error[E0308]: mismatched types
+  --> $DIR/recover-range-pats.rs:74:12
+   |
+LL |     if let .0.. = 0 {}
+   |            ^^     - this expression has type `{integer}`
+   |            |
+   |            expected integer, found floating-point number
+
+error[E0029]: only `char` and numeric types are allowed in range patterns
+  --> $DIR/recover-range-pats.rs:82:12
+   |
+LL |     if let true..= = 0 {}
+   |            ^^^^ this is of type `bool` but it should be `char` or numeric
+
+error[E0308]: mismatched types
+  --> $DIR/recover-range-pats.rs:84:12
+   |
+LL |     if let .0..= = 0 {}
+   |            ^^      - this expression has type `{integer}`
+   |            |
+   |            expected integer, found floating-point number
+
+error[E0029]: only `char` and numeric types are allowed in range patterns
+  --> $DIR/recover-range-pats.rs:92:12
+   |
+LL |     if let true... = 0 {}
+   |            ^^^^ this is of type `bool` but it should be `char` or numeric
+
+error[E0308]: mismatched types
+  --> $DIR/recover-range-pats.rs:94:12
+   |
+LL |     if let .0... = 0 {}
+   |            ^^      - this expression has type `{integer}`
+   |            |
+   |            expected integer, found floating-point number
+
+error[E0029]: only `char` and numeric types are allowed in range patterns
+  --> $DIR/recover-range-pats.rs:102:14
+   |
+LL |     if let ..true = 0 {}
+   |              ^^^^ this is of type `bool` but it should be `char` or numeric
+
+error[E0308]: mismatched types
+  --> $DIR/recover-range-pats.rs:104:15
+   |
+LL |     if let .. .0 = 0 {}
+   |               ^^   - this expression has type `{integer}`
+   |               |
+   |               expected integer, found floating-point number
+
+error[E0029]: only `char` and numeric types are allowed in range patterns
+  --> $DIR/recover-range-pats.rs:112:15
+   |
+LL |     if let ..=true = 0 {}
+   |               ^^^^ this is of type `bool` but it should be `char` or numeric
+
+error[E0308]: mismatched types
+  --> $DIR/recover-range-pats.rs:114:15
+   |
+LL |     if let ..=.0 = 0 {}
+   |               ^^   - this expression has type `{integer}`
+   |               |
+   |               expected integer, found floating-point number
+
+error[E0029]: only `char` and numeric types are allowed in range patterns
+  --> $DIR/recover-range-pats.rs:124:15
+   |
+LL |     if let ...true = 0 {}
+   |               ^^^^ this is of type `bool` but it should be `char` or numeric
+
+error[E0308]: mismatched types
+  --> $DIR/recover-range-pats.rs:127:15
+   |
+LL |     if let ....3 = 0 {}
+   |               ^^   - this expression has type `{integer}`
+   |               |
+   |               expected integer, found floating-point number
+
+error: aborting due to 60 previous errors
+
+Some errors have detailed explanations: E0029, E0308, E0586.
+For more information about an error, try `rustc --explain E0029`.
diff --git a/tests/ui/parser/recover-ref-dyn-mut.rs b/tests/ui/parser/recover-ref-dyn-mut.rs
new file mode 100644
index 000000000..3016275cc
--- /dev/null
+++ b/tests/ui/parser/recover-ref-dyn-mut.rs
@@ -0,0 +1,9 @@
+// Test that the parser detects `&dyn mut`, offers a help message, and
+// recovers.
+
+fn main() {
+    let r: &dyn mut Trait;
+    //~^ ERROR: `mut` must precede `dyn`
+    //~| HELP: place `mut` before `dyn`
+    //~| ERROR: cannot find trait `Trait` in this scope [E0405]
+}
diff --git a/tests/ui/parser/recover-ref-dyn-mut.stderr b/tests/ui/parser/recover-ref-dyn-mut.stderr
new file mode 100644
index 000000000..c048c8ea1
--- /dev/null
+++ b/tests/ui/parser/recover-ref-dyn-mut.stderr
@@ -0,0 +1,15 @@
+error: `mut` must precede `dyn`
+  --> $DIR/recover-ref-dyn-mut.rs:5:12
+   |
+LL |     let r: &dyn mut Trait;
+   |            ^^^^^^^^ help: place `mut` before `dyn`: `&mut dyn`
+
+error[E0405]: cannot find trait `Trait` in this scope
+  --> $DIR/recover-ref-dyn-mut.rs:5:21
+   |
+LL |     let r: &dyn mut Trait;
+   |                     ^^^^^ not found in this scope
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0405`.
diff --git a/tests/ui/parser/recover-struct.rs b/tests/ui/parser/recover-struct.rs
new file mode 100644
index 000000000..bfa5b454c
--- /dev/null
+++ b/tests/ui/parser/recover-struct.rs
@@ -0,0 +1,7 @@
+fn main() {
+    struct Test {
+        Very
+        Bad //~ ERROR found `Bad`
+        Stuff
+    }
+}
diff --git a/tests/ui/parser/recover-struct.stderr b/tests/ui/parser/recover-struct.stderr
new file mode 100644
index 000000000..9f6fb06ca
--- /dev/null
+++ b/tests/ui/parser/recover-struct.stderr
@@ -0,0 +1,12 @@
+error: expected `:`, found `Bad`
+  --> $DIR/recover-struct.rs:4:9
+   |
+LL |     struct Test {
+   |            ---- while parsing this struct
+LL |         Very
+   |             - expected `:`
+LL |         Bad
+   |         ^^^ unexpected token
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/recover-tuple-pat.rs b/tests/ui/parser/recover-tuple-pat.rs
new file mode 100644
index 000000000..7fded752d
--- /dev/null
+++ b/tests/ui/parser/recover-tuple-pat.rs
@@ -0,0 +1,12 @@
+// NOTE: This doesn't recover anymore.
+
+fn main() {
+    let x = (1, 2, 3, 4);
+    match x {
+        (1, .., 4) => {}
+        (1, .=., 4) => { let _: usize = ""; }
+        //~^ ERROR expected pattern, found `.`
+        (.=., 4) => {}
+        (1, 2, 3, 4) => {}
+    }
+}
diff --git a/tests/ui/parser/recover-tuple-pat.stderr b/tests/ui/parser/recover-tuple-pat.stderr
new file mode 100644
index 000000000..93a6a66a6
--- /dev/null
+++ b/tests/ui/parser/recover-tuple-pat.stderr
@@ -0,0 +1,8 @@
+error: expected pattern, found `.`
+  --> $DIR/recover-tuple-pat.rs:7:13
+   |
+LL |         (1, .=., 4) => { let _: usize = ""; }
+   |             ^ expected pattern
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/recover-tuple.rs b/tests/ui/parser/recover-tuple.rs
new file mode 100644
index 000000000..59e2695de
--- /dev/null
+++ b/tests/ui/parser/recover-tuple.rs
@@ -0,0 +1,11 @@
+fn main() {
+    // no complaints about the tuple not matching the expected type
+    let x: (usize, usize, usize) = (3, .=.);
+    //~^ ERROR expected expression, found `.`
+    // verify that the parser recovers:
+    let y: usize = ""; //~ ERROR mismatched types
+    // no complaints about the type
+    foo(x);
+}
+
+fn foo(_: (usize, usize, usize)) {}
diff --git a/tests/ui/parser/recover-tuple.stderr b/tests/ui/parser/recover-tuple.stderr
new file mode 100644
index 000000000..88891b54b
--- /dev/null
+++ b/tests/ui/parser/recover-tuple.stderr
@@ -0,0 +1,17 @@
+error: expected expression, found `.`
+  --> $DIR/recover-tuple.rs:3:40
+   |
+LL |     let x: (usize, usize, usize) = (3, .=.);
+   |                                        ^ expected expression
+
+error[E0308]: mismatched types
+  --> $DIR/recover-tuple.rs:6:20
+   |
+LL |     let y: usize = "";
+   |            -----   ^^ expected `usize`, found `&str`
+   |            |
+   |            expected due to this
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/parser/recover-unticked-labels.fixed b/tests/ui/parser/recover-unticked-labels.fixed
new file mode 100644
index 000000000..159d995b8
--- /dev/null
+++ b/tests/ui/parser/recover-unticked-labels.fixed
@@ -0,0 +1,7 @@
+// run-rustfix
+
+fn main() {
+    'label: loop { break 'label };    //~ error: cannot find value `label` in this scope
+    'label: loop { break 'label 0 };  //~ error: expected a label, found an identifier
+    'label: loop { continue 'label }; //~ error: expected a label, found an identifier
+}
diff --git a/tests/ui/parser/recover-unticked-labels.rs b/tests/ui/parser/recover-unticked-labels.rs
new file mode 100644
index 000000000..56034de68
--- /dev/null
+++ b/tests/ui/parser/recover-unticked-labels.rs
@@ -0,0 +1,7 @@
+// run-rustfix
+
+fn main() {
+    'label: loop { break label };    //~ error: cannot find value `label` in this scope
+    'label: loop { break label 0 };  //~ error: expected a label, found an identifier
+    'label: loop { continue label }; //~ error: expected a label, found an identifier
+}
diff --git a/tests/ui/parser/recover-unticked-labels.stderr b/tests/ui/parser/recover-unticked-labels.stderr
new file mode 100644
index 000000000..c115dffb1
--- /dev/null
+++ b/tests/ui/parser/recover-unticked-labels.stderr
@@ -0,0 +1,25 @@
+error: expected a label, found an identifier
+  --> $DIR/recover-unticked-labels.rs:5:26
+   |
+LL |     'label: loop { break label 0 };
+   |                          ^^^^^ help: labels start with a tick: `'label`
+
+error: expected a label, found an identifier
+  --> $DIR/recover-unticked-labels.rs:6:29
+   |
+LL |     'label: loop { continue label };
+   |                             ^^^^^ help: labels start with a tick: `'label`
+
+error[E0425]: cannot find value `label` in this scope
+  --> $DIR/recover-unticked-labels.rs:4:26
+   |
+LL |     'label: loop { break label };
+   |     ------               ^^^^^
+   |     |                    |
+   |     |                    not found in this scope
+   |     |                    help: use the similarly named label: `'label`
+   |     a label with a similar name exists
+
+error: aborting due to 3 previous errors
+
+For more information about this error, try `rustc --explain E0425`.
diff --git a/tests/ui/parser/recover-where-clause-before-tuple-struct-body-0.fixed b/tests/ui/parser/recover-where-clause-before-tuple-struct-body-0.fixed
new file mode 100644
index 000000000..227c40e97
--- /dev/null
+++ b/tests/ui/parser/recover-where-clause-before-tuple-struct-body-0.fixed
@@ -0,0 +1,15 @@
+// Regression test for issues #100790 and #106439.
+// run-rustfix
+
+pub struct Example(usize)
+where
+    (): Sized;
+//~^^^ ERROR where clauses are not allowed before tuple struct bodies
+
+struct _Demo(pub usize, usize)
+where
+    (): Sized,
+    String: Clone;
+//~^^^^ ERROR where clauses are not allowed before tuple struct bodies
+
+fn main() {}
diff --git a/tests/ui/parser/recover-where-clause-before-tuple-struct-body-0.rs b/tests/ui/parser/recover-where-clause-before-tuple-struct-body-0.rs
new file mode 100644
index 000000000..3699e6fe5
--- /dev/null
+++ b/tests/ui/parser/recover-where-clause-before-tuple-struct-body-0.rs
@@ -0,0 +1,17 @@
+// Regression test for issues #100790 and #106439.
+// run-rustfix
+
+pub struct Example
+where
+    (): Sized,
+(usize);
+//~^^^ ERROR where clauses are not allowed before tuple struct bodies
+
+struct _Demo
+where
+    (): Sized,
+    String: Clone,
+(pub usize, usize);
+//~^^^^ ERROR where clauses are not allowed before tuple struct bodies
+
+fn main() {}
diff --git a/tests/ui/parser/recover-where-clause-before-tuple-struct-body-0.stderr b/tests/ui/parser/recover-where-clause-before-tuple-struct-body-0.stderr
new file mode 100644
index 000000000..18aa5fadb
--- /dev/null
+++ b/tests/ui/parser/recover-where-clause-before-tuple-struct-body-0.stderr
@@ -0,0 +1,40 @@
+error: where clauses are not allowed before tuple struct bodies
+  --> $DIR/recover-where-clause-before-tuple-struct-body-0.rs:5:1
+   |
+LL |   pub struct Example
+   |              ------- while parsing this tuple struct
+LL | / where
+LL | |     (): Sized,
+   | |______________^ unexpected where clause
+LL |   (usize);
+   |   ------- the struct body
+   |
+help: move the body before the where clause
+   |
+LL ~ pub struct Example(usize)
+LL | where
+LL ~     (): Sized;
+   |
+
+error: where clauses are not allowed before tuple struct bodies
+  --> $DIR/recover-where-clause-before-tuple-struct-body-0.rs:11:1
+   |
+LL |   struct _Demo
+   |          ----- while parsing this tuple struct
+LL | / where
+LL | |     (): Sized,
+LL | |     String: Clone,
+   | |__________________^ unexpected where clause
+LL |   (pub usize, usize);
+   |   ------------------ the struct body
+   |
+help: move the body before the where clause
+   |
+LL ~ struct _Demo(pub usize, usize)
+LL | where
+LL |     (): Sized,
+LL ~     String: Clone;
+   |
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/recover-where-clause-before-tuple-struct-body-1.rs b/tests/ui/parser/recover-where-clause-before-tuple-struct-body-1.rs
new file mode 100644
index 000000000..f515ae81e
--- /dev/null
+++ b/tests/ui/parser/recover-where-clause-before-tuple-struct-body-1.rs
@@ -0,0 +1,7 @@
+// Regression test for issues #100790 and #106439.
+
+// Make sure that we still show a helpful error message even if the trailing semicolon is missing.
+
+struct Foo<T> where T: MyTrait, (T)
+//~^ ERROR where clauses are not allowed before tuple struct bodies
+//~| ERROR expected `;`, found `<eof>`
diff --git a/tests/ui/parser/recover-where-clause-before-tuple-struct-body-1.stderr b/tests/ui/parser/recover-where-clause-before-tuple-struct-body-1.stderr
new file mode 100644
index 000000000..2219c2a73
--- /dev/null
+++ b/tests/ui/parser/recover-where-clause-before-tuple-struct-body-1.stderr
@@ -0,0 +1,23 @@
+error: where clauses are not allowed before tuple struct bodies
+  --> $DIR/recover-where-clause-before-tuple-struct-body-1.rs:5:15
+   |
+LL | struct Foo<T> where T: MyTrait, (T)
+   |        ---    ^^^^^^^^^^^^^^^^^ --- the struct body
+   |        |      |
+   |        |      unexpected where clause
+   |        while parsing this tuple struct
+   |
+help: move the body before the where clause
+   |
+LL - struct Foo<T> where T: MyTrait, (T)
+LL + struct Foo<T>(T) where T: MyTrait
+   |
+
+error: expected `;`, found `<eof>`
+  --> $DIR/recover-where-clause-before-tuple-struct-body-1.rs:5:35
+   |
+LL | struct Foo<T> where T: MyTrait, (T)
+   |                                   ^ expected `;`
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/recovered-struct-variant.rs b/tests/ui/parser/recovered-struct-variant.rs
new file mode 100644
index 000000000..5b195dcc3
--- /dev/null
+++ b/tests/ui/parser/recovered-struct-variant.rs
@@ -0,0 +1,13 @@
+enum Foo {
+    A { a, b: usize }
+    //~^ ERROR expected `:`, found `,`
+}
+
+fn main() {
+    // no complaints about non-existing fields
+    let f = Foo::A { a:3, b: 4};
+    match f {
+        // no complaints about non-existing fields
+        Foo::A {a, b} => {}
+    }
+}
diff --git a/tests/ui/parser/recovered-struct-variant.stderr b/tests/ui/parser/recovered-struct-variant.stderr
new file mode 100644
index 000000000..78c67866f
--- /dev/null
+++ b/tests/ui/parser/recovered-struct-variant.stderr
@@ -0,0 +1,10 @@
+error: expected `:`, found `,`
+  --> $DIR/recovered-struct-variant.rs:2:10
+   |
+LL |     A { a, b: usize }
+   |     -    ^ expected `:`
+   |     |
+   |     while parsing this struct
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/regions-out-of-scope-slice.rs b/tests/ui/parser/regions-out-of-scope-slice.rs
new file mode 100644
index 000000000..d223619e1
--- /dev/null
+++ b/tests/ui/parser/regions-out-of-scope-slice.rs
@@ -0,0 +1,11 @@
+// This basically tests the parser's recovery on `'blk` in the wrong place.
+
+fn foo(cond: bool) {
+    let mut x;
+
+    if cond {
+        x = &'blk [1,2,3]; //~ ERROR borrow expressions cannot be annotated with lifetimes
+    }
+}
+
+fn main() {}
diff --git a/tests/ui/parser/regions-out-of-scope-slice.stderr b/tests/ui/parser/regions-out-of-scope-slice.stderr
new file mode 100644
index 000000000..bbc657ffd
--- /dev/null
+++ b/tests/ui/parser/regions-out-of-scope-slice.stderr
@@ -0,0 +1,11 @@
+error: borrow expressions cannot be annotated with lifetimes
+  --> $DIR/regions-out-of-scope-slice.rs:7:13
+   |
+LL |         x = &'blk [1,2,3];
+   |             ^----^^^^^^^^
+   |              |
+   |              annotated with lifetime here
+   |              help: remove the lifetime annotation
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/removed-syntax-closure-lifetime.rs b/tests/ui/parser/removed-syntax-closure-lifetime.rs
new file mode 100644
index 000000000..e807a1794
--- /dev/null
+++ b/tests/ui/parser/removed-syntax-closure-lifetime.rs
@@ -0,0 +1,2 @@
+type closure = Box<lt/fn()>;
+//~^ ERROR expected one of `!`, `(`, `+`, `,`, `::`, `:`, `<`, `=`, or `>`, found `/`
diff --git a/tests/ui/parser/removed-syntax-closure-lifetime.stderr b/tests/ui/parser/removed-syntax-closure-lifetime.stderr
new file mode 100644
index 000000000..e107c6b78
--- /dev/null
+++ b/tests/ui/parser/removed-syntax-closure-lifetime.stderr
@@ -0,0 +1,13 @@
+error: expected one of `!`, `(`, `+`, `,`, `::`, `:`, `<`, `=`, or `>`, found `/`
+  --> $DIR/removed-syntax-closure-lifetime.rs:1:22
+   |
+LL | type closure = Box<lt/fn()>;
+   |                      ^ expected one of 9 possible tokens
+   |
+help: you might have meant to end the type parameters here
+   |
+LL | type closure = Box<lt>/fn()>;
+   |                      +
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/removed-syntax-enum-newtype.rs b/tests/ui/parser/removed-syntax-enum-newtype.rs
new file mode 100644
index 000000000..518f90b2b
--- /dev/null
+++ b/tests/ui/parser/removed-syntax-enum-newtype.rs
@@ -0,0 +1 @@
+enum e = isize; //~ ERROR expected one of `<`, `where`, or `{`, found `=`
diff --git a/tests/ui/parser/removed-syntax-enum-newtype.stderr b/tests/ui/parser/removed-syntax-enum-newtype.stderr
new file mode 100644
index 000000000..8f7ca3567
--- /dev/null
+++ b/tests/ui/parser/removed-syntax-enum-newtype.stderr
@@ -0,0 +1,10 @@
+error: expected one of `<`, `where`, or `{`, found `=`
+  --> $DIR/removed-syntax-enum-newtype.rs:1:8
+   |
+LL | enum e = isize;
+   |      - ^ expected one of `<`, `where`, or `{`
+   |      |
+   |      while parsing this enum
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/removed-syntax-field-let-2.rs b/tests/ui/parser/removed-syntax-field-let-2.rs
new file mode 100644
index 000000000..7ff91b476
--- /dev/null
+++ b/tests/ui/parser/removed-syntax-field-let-2.rs
@@ -0,0 +1,12 @@
+struct Foo {
+    let x: i32,
+    //~^ ERROR expected identifier, found keyword
+    let y: i32,
+    //~^ ERROR expected identifier, found keyword
+}
+
+fn main() {
+    let _ = Foo {
+        //~^ ERROR missing fields `x` and `y` in initializer of `Foo`
+    };
+}
diff --git a/tests/ui/parser/removed-syntax-field-let-2.stderr b/tests/ui/parser/removed-syntax-field-let-2.stderr
new file mode 100644
index 000000000..fda0919b9
--- /dev/null
+++ b/tests/ui/parser/removed-syntax-field-let-2.stderr
@@ -0,0 +1,33 @@
+error: expected identifier, found keyword `let`
+  --> $DIR/removed-syntax-field-let-2.rs:2:5
+   |
+LL |     let x: i32,
+   |     ^^^-
+   |     |
+   |     expected identifier, found keyword
+   |     help: remove this `let` keyword
+   |
+   = note: the `let` keyword is not allowed in `struct` fields
+   = note: see <https://doc.rust-lang.org/book/ch05-01-defining-structs.html> for more information
+
+error: expected identifier, found keyword `let`
+  --> $DIR/removed-syntax-field-let-2.rs:4:5
+   |
+LL |     let y: i32,
+   |     ^^^-
+   |     |
+   |     expected identifier, found keyword
+   |     help: remove this `let` keyword
+   |
+   = note: the `let` keyword is not allowed in `struct` fields
+   = note: see <https://doc.rust-lang.org/book/ch05-01-defining-structs.html> for more information
+
+error[E0063]: missing fields `x` and `y` in initializer of `Foo`
+  --> $DIR/removed-syntax-field-let-2.rs:9:13
+   |
+LL |     let _ = Foo {
+   |             ^^^ missing `x` and `y`
+
+error: aborting due to 3 previous errors
+
+For more information about this error, try `rustc --explain E0063`.
diff --git a/tests/ui/parser/removed-syntax-field-let.rs b/tests/ui/parser/removed-syntax-field-let.rs
new file mode 100644
index 000000000..6d64de296
--- /dev/null
+++ b/tests/ui/parser/removed-syntax-field-let.rs
@@ -0,0 +1,6 @@
+struct S {
+    let foo: (),
+    //~^  ERROR expected identifier, found keyword `let`
+}
+
+fn main() {}
diff --git a/tests/ui/parser/removed-syntax-field-let.stderr b/tests/ui/parser/removed-syntax-field-let.stderr
new file mode 100644
index 000000000..9bc18dabd
--- /dev/null
+++ b/tests/ui/parser/removed-syntax-field-let.stderr
@@ -0,0 +1,14 @@
+error: expected identifier, found keyword `let`
+  --> $DIR/removed-syntax-field-let.rs:2:5
+   |
+LL |     let foo: (),
+   |     ^^^-
+   |     |
+   |     expected identifier, found keyword
+   |     help: remove this `let` keyword
+   |
+   = note: the `let` keyword is not allowed in `struct` fields
+   = note: see <https://doc.rust-lang.org/book/ch05-01-defining-structs.html> for more information
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/removed-syntax-field-semicolon.rs b/tests/ui/parser/removed-syntax-field-semicolon.rs
new file mode 100644
index 000000000..808f2a5cc
--- /dev/null
+++ b/tests/ui/parser/removed-syntax-field-semicolon.rs
@@ -0,0 +1,6 @@
+struct S {
+    bar: ();
+    //~^ ERROR struct fields are separated by `,`
+}
+
+fn main() {}
diff --git a/tests/ui/parser/removed-syntax-field-semicolon.stderr b/tests/ui/parser/removed-syntax-field-semicolon.stderr
new file mode 100644
index 000000000..532d4fb2b
--- /dev/null
+++ b/tests/ui/parser/removed-syntax-field-semicolon.stderr
@@ -0,0 +1,10 @@
+error: struct fields are separated by `,`
+  --> $DIR/removed-syntax-field-semicolon.rs:2:12
+   |
+LL | struct S {
+   |        - while parsing this struct
+LL |     bar: ();
+   |            ^ help: replace `;` with `,`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/removed-syntax-fixed-vec.rs b/tests/ui/parser/removed-syntax-fixed-vec.rs
new file mode 100644
index 000000000..560efecb9
--- /dev/null
+++ b/tests/ui/parser/removed-syntax-fixed-vec.rs
@@ -0,0 +1 @@
+type v = [isize * 3]; //~ ERROR expected one of `!`, `(`, `+`, `::`, `;`, `<`, or `]`, found `*`
diff --git a/tests/ui/parser/removed-syntax-fixed-vec.stderr b/tests/ui/parser/removed-syntax-fixed-vec.stderr
new file mode 100644
index 000000000..a2b97544f
--- /dev/null
+++ b/tests/ui/parser/removed-syntax-fixed-vec.stderr
@@ -0,0 +1,8 @@
+error: expected one of `!`, `(`, `+`, `::`, `;`, `<`, or `]`, found `*`
+  --> $DIR/removed-syntax-fixed-vec.rs:1:17
+   |
+LL | type v = [isize * 3];
+   |                 ^ expected one of 7 possible tokens
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/removed-syntax-fn-sigil.rs b/tests/ui/parser/removed-syntax-fn-sigil.rs
new file mode 100644
index 000000000..725843429
--- /dev/null
+++ b/tests/ui/parser/removed-syntax-fn-sigil.rs
@@ -0,0 +1,3 @@
+fn main() {
+    let x: fn~() = || (); //~ ERROR expected `(`, found `~`
+}
diff --git a/tests/ui/parser/removed-syntax-fn-sigil.stderr b/tests/ui/parser/removed-syntax-fn-sigil.stderr
new file mode 100644
index 000000000..196a5af47
--- /dev/null
+++ b/tests/ui/parser/removed-syntax-fn-sigil.stderr
@@ -0,0 +1,10 @@
+error: expected `(`, found `~`
+  --> $DIR/removed-syntax-fn-sigil.rs:2:14
+   |
+LL |     let x: fn~() = || ();
+   |         -    ^ expected `(`
+   |         |
+   |         while parsing the type for `x`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/removed-syntax-mode.rs b/tests/ui/parser/removed-syntax-mode.rs
new file mode 100644
index 000000000..a438db3b0
--- /dev/null
+++ b/tests/ui/parser/removed-syntax-mode.rs
@@ -0,0 +1,4 @@
+fn f(+x: isize) {}
+//~^ ERROR expected parameter name, found `+`
+
+fn main() {}
diff --git a/tests/ui/parser/removed-syntax-mode.stderr b/tests/ui/parser/removed-syntax-mode.stderr
new file mode 100644
index 000000000..d0393b379
--- /dev/null
+++ b/tests/ui/parser/removed-syntax-mode.stderr
@@ -0,0 +1,8 @@
+error: expected parameter name, found `+`
+  --> $DIR/removed-syntax-mode.rs:1:6
+   |
+LL | fn f(+x: isize) {}
+   |      ^ expected parameter name
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/removed-syntax-mut-vec-expr.rs b/tests/ui/parser/removed-syntax-mut-vec-expr.rs
new file mode 100644
index 000000000..2ee95db5a
--- /dev/null
+++ b/tests/ui/parser/removed-syntax-mut-vec-expr.rs
@@ -0,0 +1,3 @@
+fn main() {
+    let v = [mut 1, 2, 3, 4]; //~ ERROR expected expression, found keyword `mut`
+}
diff --git a/tests/ui/parser/removed-syntax-mut-vec-expr.stderr b/tests/ui/parser/removed-syntax-mut-vec-expr.stderr
new file mode 100644
index 000000000..313420fb9
--- /dev/null
+++ b/tests/ui/parser/removed-syntax-mut-vec-expr.stderr
@@ -0,0 +1,8 @@
+error: expected expression, found keyword `mut`
+  --> $DIR/removed-syntax-mut-vec-expr.rs:2:14
+   |
+LL |     let v = [mut 1, 2, 3, 4];
+   |              ^^^ expected expression
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/removed-syntax-mut-vec-ty.rs b/tests/ui/parser/removed-syntax-mut-vec-ty.rs
new file mode 100644
index 000000000..923a7ea37
--- /dev/null
+++ b/tests/ui/parser/removed-syntax-mut-vec-ty.rs
@@ -0,0 +1 @@
+type v = [mut isize]; //~ ERROR expected type, found keyword `mut`
diff --git a/tests/ui/parser/removed-syntax-mut-vec-ty.stderr b/tests/ui/parser/removed-syntax-mut-vec-ty.stderr
new file mode 100644
index 000000000..02b518e25
--- /dev/null
+++ b/tests/ui/parser/removed-syntax-mut-vec-ty.stderr
@@ -0,0 +1,8 @@
+error: expected type, found keyword `mut`
+  --> $DIR/removed-syntax-mut-vec-ty.rs:1:11
+   |
+LL | type v = [mut isize];
+   |           ^^^ expected type
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/removed-syntax-ptr-lifetime.rs b/tests/ui/parser/removed-syntax-ptr-lifetime.rs
new file mode 100644
index 000000000..cc69af44a
--- /dev/null
+++ b/tests/ui/parser/removed-syntax-ptr-lifetime.rs
@@ -0,0 +1 @@
+type bptr = &lifetime/isize; //~ ERROR expected one of `!`, `(`, `::`, `;`, `<`, or `where`, found `/`
diff --git a/tests/ui/parser/removed-syntax-ptr-lifetime.stderr b/tests/ui/parser/removed-syntax-ptr-lifetime.stderr
new file mode 100644
index 000000000..914de43e6
--- /dev/null
+++ b/tests/ui/parser/removed-syntax-ptr-lifetime.stderr
@@ -0,0 +1,8 @@
+error: expected one of `!`, `(`, `::`, `;`, `<`, or `where`, found `/`
+  --> $DIR/removed-syntax-ptr-lifetime.rs:1:22
+   |
+LL | type bptr = &lifetime/isize;
+   |                      ^ expected one of `!`, `(`, `::`, `;`, `<`, or `where`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/removed-syntax-record.rs b/tests/ui/parser/removed-syntax-record.rs
new file mode 100644
index 000000000..d1d91c8f7
--- /dev/null
+++ b/tests/ui/parser/removed-syntax-record.rs
@@ -0,0 +1 @@
+type t = { f: () }; //~ ERROR expected type, found `{`
diff --git a/tests/ui/parser/removed-syntax-record.stderr b/tests/ui/parser/removed-syntax-record.stderr
new file mode 100644
index 000000000..0a1655840
--- /dev/null
+++ b/tests/ui/parser/removed-syntax-record.stderr
@@ -0,0 +1,8 @@
+error: expected type, found `{`
+  --> $DIR/removed-syntax-record.rs:1:10
+   |
+LL | type t = { f: () };
+   |          ^ expected type
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/removed-syntax-static-fn.rs b/tests/ui/parser/removed-syntax-static-fn.rs
new file mode 100644
index 000000000..cd643b874
--- /dev/null
+++ b/tests/ui/parser/removed-syntax-static-fn.rs
@@ -0,0 +1,10 @@
+struct S;
+
+impl S {
+    static fn f() {}
+    //~^ ERROR expected identifier, found keyword `fn`
+    //~| ERROR expected one of `:`, `;`, or `=`
+    //~| ERROR missing type for `static` item
+}
+
+fn main() {}
diff --git a/tests/ui/parser/removed-syntax-static-fn.stderr b/tests/ui/parser/removed-syntax-static-fn.stderr
new file mode 100644
index 000000000..52e065894
--- /dev/null
+++ b/tests/ui/parser/removed-syntax-static-fn.stderr
@@ -0,0 +1,25 @@
+error: expected identifier, found keyword `fn`
+  --> $DIR/removed-syntax-static-fn.rs:4:12
+   |
+LL |     static fn f() {}
+   |            ^^ expected identifier, found keyword
+
+error: expected one of `:`, `;`, or `=`, found `f`
+  --> $DIR/removed-syntax-static-fn.rs:4:15
+   |
+LL | impl S {
+   |        - while parsing this item list starting here
+LL |     static fn f() {}
+   |               ^ expected one of `:`, `;`, or `=`
+...
+LL | }
+   | - the item list ends here
+
+error: missing type for `static` item
+  --> $DIR/removed-syntax-static-fn.rs:4:14
+   |
+LL |     static fn f() {}
+   |              ^ help: provide a type for the item: `: <type>`
+
+error: aborting due to 3 previous errors
+
diff --git a/tests/ui/parser/removed-syntax-uniq-mut-expr.rs b/tests/ui/parser/removed-syntax-uniq-mut-expr.rs
new file mode 100644
index 000000000..08ef4b432
--- /dev/null
+++ b/tests/ui/parser/removed-syntax-uniq-mut-expr.rs
@@ -0,0 +1,3 @@
+fn main() {
+    let a_box = box mut 42; //~ ERROR expected expression, found keyword `mut`
+}
diff --git a/tests/ui/parser/removed-syntax-uniq-mut-expr.stderr b/tests/ui/parser/removed-syntax-uniq-mut-expr.stderr
new file mode 100644
index 000000000..63d2fdb8c
--- /dev/null
+++ b/tests/ui/parser/removed-syntax-uniq-mut-expr.stderr
@@ -0,0 +1,8 @@
+error: expected expression, found keyword `mut`
+  --> $DIR/removed-syntax-uniq-mut-expr.rs:2:21
+   |
+LL |     let a_box = box mut 42;
+   |                     ^^^ expected expression
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/removed-syntax-uniq-mut-ty.rs b/tests/ui/parser/removed-syntax-uniq-mut-ty.rs
new file mode 100644
index 000000000..a8dee5bbd
--- /dev/null
+++ b/tests/ui/parser/removed-syntax-uniq-mut-ty.rs
@@ -0,0 +1,2 @@
+type mut_box = Box<mut isize>;
+//~^ ERROR expected one of `>`, a const expression, lifetime, or type, found keyword `mut`
diff --git a/tests/ui/parser/removed-syntax-uniq-mut-ty.stderr b/tests/ui/parser/removed-syntax-uniq-mut-ty.stderr
new file mode 100644
index 000000000..39db0be9f
--- /dev/null
+++ b/tests/ui/parser/removed-syntax-uniq-mut-ty.stderr
@@ -0,0 +1,8 @@
+error: expected one of `>`, a const expression, lifetime, or type, found keyword `mut`
+  --> $DIR/removed-syntax-uniq-mut-ty.rs:1:20
+   |
+LL | type mut_box = Box<mut isize>;
+   |                    ^^^ expected one of `>`, a const expression, lifetime, or type
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/removed-syntax-with-1.rs b/tests/ui/parser/removed-syntax-with-1.rs
new file mode 100644
index 000000000..2c1e152dc
--- /dev/null
+++ b/tests/ui/parser/removed-syntax-with-1.rs
@@ -0,0 +1,10 @@
+fn main() {
+    struct S {
+        foo: (),
+        bar: (),
+    }
+
+    let a = S { foo: (), bar: () };
+    let b = S { foo: () with a, bar: () };
+    //~^ ERROR expected one of `,`, `.`, `?`, `}`, or an operator, found `with`
+}
diff --git a/tests/ui/parser/removed-syntax-with-1.stderr b/tests/ui/parser/removed-syntax-with-1.stderr
new file mode 100644
index 000000000..c3f747b61
--- /dev/null
+++ b/tests/ui/parser/removed-syntax-with-1.stderr
@@ -0,0 +1,11 @@
+error: expected one of `,`, `.`, `?`, `}`, or an operator, found `with`
+  --> $DIR/removed-syntax-with-1.rs:8:25
+   |
+LL |     let b = S { foo: () with a, bar: () };
+   |             -          -^^^^ expected one of `,`, `.`, `?`, `}`, or an operator
+   |             |          |
+   |             |          help: try adding a comma: `,`
+   |             while parsing this struct
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/removed-syntax-with-2.rs b/tests/ui/parser/removed-syntax-with-2.rs
new file mode 100644
index 000000000..451057c66
--- /dev/null
+++ b/tests/ui/parser/removed-syntax-with-2.rs
@@ -0,0 +1,11 @@
+fn main() {
+    struct S {
+        foo: (),
+        bar: (),
+    }
+
+    let a = S { foo: (), bar: () };
+    let b = S { foo: (), with a };
+    //~^ ERROR expected one of `,`, `:`, or `}`, found `a`
+    //~| ERROR missing field `bar` in initializer of `S`
+}
diff --git a/tests/ui/parser/removed-syntax-with-2.stderr b/tests/ui/parser/removed-syntax-with-2.stderr
new file mode 100644
index 000000000..c6ae1ce67
--- /dev/null
+++ b/tests/ui/parser/removed-syntax-with-2.stderr
@@ -0,0 +1,17 @@
+error: expected one of `,`, `:`, or `}`, found `a`
+  --> $DIR/removed-syntax-with-2.rs:8:31
+   |
+LL |     let b = S { foo: (), with a };
+   |             -                 ^ expected one of `,`, `:`, or `}`
+   |             |
+   |             while parsing this struct
+
+error[E0063]: missing field `bar` in initializer of `S`
+  --> $DIR/removed-syntax-with-2.rs:8:13
+   |
+LL |     let b = S { foo: (), with a };
+   |             ^ missing `bar`
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0063`.
diff --git a/tests/ui/parser/require-parens-for-chained-comparison.rs b/tests/ui/parser/require-parens-for-chained-comparison.rs
new file mode 100644
index 000000000..5b90e905a
--- /dev/null
+++ b/tests/ui/parser/require-parens-for-chained-comparison.rs
@@ -0,0 +1,38 @@
+fn main() {
+    false == false == false;
+    //~^ ERROR comparison operators cannot be chained
+    //~| HELP split the comparison into two
+
+    false == 0 < 2;
+    //~^ ERROR comparison operators cannot be chained
+    //~| HELP parenthesize the comparison
+
+    f<X>();
+    //~^ ERROR comparison operators cannot be chained
+    //~| HELP use `::<...>` instead of `<...>` to specify lifetime, type, or const arguments
+
+    f<Result<Option<X>, Option<Option<X>>>(1, 2);
+    //~^ ERROR comparison operators cannot be chained
+    //~| HELP use `::<...>` instead of `<...>` to specify lifetime, type, or const arguments
+
+    let _ = f<u8, i8>();
+    //~^ ERROR expected one of
+    //~| HELP use `::<...>` instead of `<...>` to specify lifetime, type, or const arguments
+
+    let _ = f<'_, i8>();
+    //~^ ERROR expected one of
+    //~| HELP use `::<...>` instead of `<...>` to specify lifetime, type, or const arguments
+    //~| ERROR expected
+    //~| HELP add `'` to close the char literal
+
+    f<'_>();
+    //~^ comparison operators cannot be chained
+    //~| HELP use `::<...>` instead of `<...>` to specify lifetime, type, or const arguments
+    //~| ERROR expected
+    //~| HELP add `'` to close the char literal
+
+    let _ = f<u8>;
+    //~^ ERROR comparison operators cannot be chained
+    //~| HELP use `::<...>` instead of `<...>` to specify lifetime, type, or const arguments
+    //~| HELP or use `(...)` if you meant to specify fn arguments
+}
diff --git a/tests/ui/parser/require-parens-for-chained-comparison.stderr b/tests/ui/parser/require-parens-for-chained-comparison.stderr
new file mode 100644
index 000000000..52e201c43
--- /dev/null
+++ b/tests/ui/parser/require-parens-for-chained-comparison.stderr
@@ -0,0 +1,110 @@
+error: comparison operators cannot be chained
+  --> $DIR/require-parens-for-chained-comparison.rs:2:11
+   |
+LL |     false == false == false;
+   |           ^^       ^^
+   |
+help: split the comparison into two
+   |
+LL |     false == false && false == false;
+   |                    ++++++++
+
+error: comparison operators cannot be chained
+  --> $DIR/require-parens-for-chained-comparison.rs:6:11
+   |
+LL |     false == 0 < 2;
+   |           ^^   ^
+   |
+help: parenthesize the comparison
+   |
+LL |     false == (0 < 2);
+   |              +     +
+
+error: comparison operators cannot be chained
+  --> $DIR/require-parens-for-chained-comparison.rs:10:6
+   |
+LL |     f<X>();
+   |      ^ ^
+   |
+help: use `::<...>` instead of `<...>` to specify lifetime, type, or const arguments
+   |
+LL |     f::<X>();
+   |      ++
+
+error: comparison operators cannot be chained
+  --> $DIR/require-parens-for-chained-comparison.rs:14:6
+   |
+LL |     f<Result<Option<X>, Option<Option<X>>>(1, 2);
+   |      ^      ^
+   |
+help: use `::<...>` instead of `<...>` to specify lifetime, type, or const arguments
+   |
+LL |     f::<Result<Option<X>, Option<Option<X>>>(1, 2);
+   |      ++
+
+error: expected one of `!`, `.`, `::`, `;`, `?`, `else`, `{`, or an operator, found `,`
+  --> $DIR/require-parens-for-chained-comparison.rs:18:17
+   |
+LL |     let _ = f<u8, i8>();
+   |                 ^ expected one of 8 possible tokens
+   |
+help: use `::<...>` instead of `<...>` to specify lifetime, type, or const arguments
+   |
+LL |     let _ = f::<u8, i8>();
+   |              ++
+
+error: expected `while`, `for`, `loop` or `{` after a label
+  --> $DIR/require-parens-for-chained-comparison.rs:22:17
+   |
+LL |     let _ = f<'_, i8>();
+   |                 ^ expected `while`, `for`, `loop` or `{` after a label
+   |
+help: add `'` to close the char literal
+   |
+LL |     let _ = f<'_', i8>();
+   |                 +
+
+error: expected one of `.`, `:`, `;`, `?`, `else`, `for`, `loop`, `while`, or an operator, found `,`
+  --> $DIR/require-parens-for-chained-comparison.rs:22:17
+   |
+LL |     let _ = f<'_, i8>();
+   |                 ^ expected one of 9 possible tokens
+   |
+help: use `::<...>` instead of `<...>` to specify lifetime, type, or const arguments
+   |
+LL |     let _ = f::<'_, i8>();
+   |              ++
+
+error: expected `while`, `for`, `loop` or `{` after a label
+  --> $DIR/require-parens-for-chained-comparison.rs:28:9
+   |
+LL |     f<'_>();
+   |         ^ expected `while`, `for`, `loop` or `{` after a label
+   |
+help: add `'` to close the char literal
+   |
+LL |     f<'_'>();
+   |         +
+
+error: comparison operators cannot be chained
+  --> $DIR/require-parens-for-chained-comparison.rs:28:6
+   |
+LL |     f<'_>();
+   |      ^  ^
+   |
+help: use `::<...>` instead of `<...>` to specify lifetime, type, or const arguments
+   |
+LL |     f::<'_>();
+   |      ++
+
+error: comparison operators cannot be chained
+  --> $DIR/require-parens-for-chained-comparison.rs:34:14
+   |
+LL |     let _ = f<u8>;
+   |              ^  ^
+   |
+   = help: use `::<...>` instead of `<...>` to specify lifetime, type, or const arguments
+   = help: or use `(...)` if you meant to specify fn arguments
+
+error: aborting due to 10 previous errors
+
diff --git a/tests/ui/parser/self-in-function-arg.rs b/tests/ui/parser/self-in-function-arg.rs
new file mode 100644
index 000000000..6172ffe1b
--- /dev/null
+++ b/tests/ui/parser/self-in-function-arg.rs
@@ -0,0 +1,3 @@
+fn foo(x:i32, self: i32) -> i32 { self } //~ ERROR unexpected `self` parameter in function
+
+fn main() {}
diff --git a/tests/ui/parser/self-in-function-arg.stderr b/tests/ui/parser/self-in-function-arg.stderr
new file mode 100644
index 000000000..47d8381b0
--- /dev/null
+++ b/tests/ui/parser/self-in-function-arg.stderr
@@ -0,0 +1,8 @@
+error: unexpected `self` parameter in function
+  --> $DIR/self-in-function-arg.rs:1:15
+   |
+LL | fn foo(x:i32, self: i32) -> i32 { self }
+   |               ^^^^ must be the first parameter of an associated function
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/self-param-semantic-fail.rs b/tests/ui/parser/self-param-semantic-fail.rs
new file mode 100644
index 000000000..621aab279
--- /dev/null
+++ b/tests/ui/parser/self-param-semantic-fail.rs
@@ -0,0 +1,64 @@
+// This test ensures that `self` is semantically rejected
+// in contexts with `FnDecl` but outside of associated `fn`s.
+// FIXME(Centril): For now closures are an exception.
+
+fn main() {}
+
+fn free() {
+    fn f1(self) {}
+    //~^ ERROR `self` parameter is only allowed in associated functions
+    fn f2(mut self) {}
+    //~^ ERROR `self` parameter is only allowed in associated functions
+    fn f3(&self) {}
+    //~^ ERROR `self` parameter is only allowed in associated functions
+    fn f4(&mut self) {}
+    //~^ ERROR `self` parameter is only allowed in associated functions
+    fn f5<'a>(&'a self) {}
+    //~^ ERROR `self` parameter is only allowed in associated functions
+    fn f6<'a>(&'a mut self) {}
+    //~^ ERROR `self` parameter is only allowed in associated functions
+    fn f7(self: u8) {}
+    //~^ ERROR `self` parameter is only allowed in associated functions
+    fn f8(mut self: u8) {}
+    //~^ ERROR `self` parameter is only allowed in associated functions
+}
+
+extern "C" {
+    fn f1(self);
+    //~^ ERROR `self` parameter is only allowed in associated functions
+    fn f2(mut self);
+    //~^ ERROR `self` parameter is only allowed in associated functions
+    //~| ERROR patterns aren't allowed in
+    fn f3(&self);
+    //~^ ERROR `self` parameter is only allowed in associated functions
+    fn f4(&mut self);
+    //~^ ERROR `self` parameter is only allowed in associated functions
+    fn f5<'a>(&'a self);
+    //~^ ERROR `self` parameter is only allowed in associated functions
+    fn f6<'a>(&'a mut self);
+    //~^ ERROR `self` parameter is only allowed in associated functions
+    fn f7(self: u8);
+    //~^ ERROR `self` parameter is only allowed in associated functions
+    fn f8(mut self: u8);
+//~^ ERROR `self` parameter is only allowed in associated functions
+//~| ERROR patterns aren't allowed in
+}
+
+type X1 = fn(self);
+//~^ ERROR `self` parameter is only allowed in associated functions
+type X2 = fn(mut self);
+//~^ ERROR `self` parameter is only allowed in associated functions
+//~| ERROR patterns aren't allowed in
+type X3 = fn(&self);
+//~^ ERROR `self` parameter is only allowed in associated functions
+type X4 = fn(&mut self);
+//~^ ERROR `self` parameter is only allowed in associated functions
+type X5 = for<'a> fn(&'a self);
+//~^ ERROR `self` parameter is only allowed in associated functions
+type X6 = for<'a> fn(&'a mut self);
+//~^ ERROR `self` parameter is only allowed in associated functions
+type X7 = fn(self: u8);
+//~^ ERROR `self` parameter is only allowed in associated functions
+type X8 = fn(mut self: u8);
+//~^ ERROR `self` parameter is only allowed in associated functions
+//~| ERROR patterns aren't allowed in
diff --git a/tests/ui/parser/self-param-semantic-fail.stderr b/tests/ui/parser/self-param-semantic-fail.stderr
new file mode 100644
index 000000000..e5d679773
--- /dev/null
+++ b/tests/ui/parser/self-param-semantic-fail.stderr
@@ -0,0 +1,220 @@
+error: `self` parameter is only allowed in associated functions
+  --> $DIR/self-param-semantic-fail.rs:8:11
+   |
+LL |     fn f1(self) {}
+   |           ^^^^ not semantically valid as function parameter
+   |
+   = note: associated functions are those in `impl` or `trait` definitions
+
+error: `self` parameter is only allowed in associated functions
+  --> $DIR/self-param-semantic-fail.rs:10:11
+   |
+LL |     fn f2(mut self) {}
+   |           ^^^^^^^^ not semantically valid as function parameter
+   |
+   = note: associated functions are those in `impl` or `trait` definitions
+
+error: `self` parameter is only allowed in associated functions
+  --> $DIR/self-param-semantic-fail.rs:12:11
+   |
+LL |     fn f3(&self) {}
+   |           ^^^^^ not semantically valid as function parameter
+   |
+   = note: associated functions are those in `impl` or `trait` definitions
+
+error: `self` parameter is only allowed in associated functions
+  --> $DIR/self-param-semantic-fail.rs:14:11
+   |
+LL |     fn f4(&mut self) {}
+   |           ^^^^^^^^^ not semantically valid as function parameter
+   |
+   = note: associated functions are those in `impl` or `trait` definitions
+
+error: `self` parameter is only allowed in associated functions
+  --> $DIR/self-param-semantic-fail.rs:16:15
+   |
+LL |     fn f5<'a>(&'a self) {}
+   |               ^^^^^^^^ not semantically valid as function parameter
+   |
+   = note: associated functions are those in `impl` or `trait` definitions
+
+error: `self` parameter is only allowed in associated functions
+  --> $DIR/self-param-semantic-fail.rs:18:15
+   |
+LL |     fn f6<'a>(&'a mut self) {}
+   |               ^^^^^^^^^^^^ not semantically valid as function parameter
+   |
+   = note: associated functions are those in `impl` or `trait` definitions
+
+error: `self` parameter is only allowed in associated functions
+  --> $DIR/self-param-semantic-fail.rs:20:11
+   |
+LL |     fn f7(self: u8) {}
+   |           ^^^^ not semantically valid as function parameter
+   |
+   = note: associated functions are those in `impl` or `trait` definitions
+
+error: `self` parameter is only allowed in associated functions
+  --> $DIR/self-param-semantic-fail.rs:22:11
+   |
+LL |     fn f8(mut self: u8) {}
+   |           ^^^^^^^^ not semantically valid as function parameter
+   |
+   = note: associated functions are those in `impl` or `trait` definitions
+
+error: `self` parameter is only allowed in associated functions
+  --> $DIR/self-param-semantic-fail.rs:27:11
+   |
+LL |     fn f1(self);
+   |           ^^^^ not semantically valid as function parameter
+   |
+   = note: associated functions are those in `impl` or `trait` definitions
+
+error: `self` parameter is only allowed in associated functions
+  --> $DIR/self-param-semantic-fail.rs:29:11
+   |
+LL |     fn f2(mut self);
+   |           ^^^^^^^^ not semantically valid as function parameter
+   |
+   = note: associated functions are those in `impl` or `trait` definitions
+
+error[E0130]: patterns aren't allowed in foreign function declarations
+  --> $DIR/self-param-semantic-fail.rs:29:11
+   |
+LL |     fn f2(mut self);
+   |           ^^^^^^^^ pattern not allowed in foreign function
+
+error: `self` parameter is only allowed in associated functions
+  --> $DIR/self-param-semantic-fail.rs:32:11
+   |
+LL |     fn f3(&self);
+   |           ^^^^^ not semantically valid as function parameter
+   |
+   = note: associated functions are those in `impl` or `trait` definitions
+
+error: `self` parameter is only allowed in associated functions
+  --> $DIR/self-param-semantic-fail.rs:34:11
+   |
+LL |     fn f4(&mut self);
+   |           ^^^^^^^^^ not semantically valid as function parameter
+   |
+   = note: associated functions are those in `impl` or `trait` definitions
+
+error: `self` parameter is only allowed in associated functions
+  --> $DIR/self-param-semantic-fail.rs:36:15
+   |
+LL |     fn f5<'a>(&'a self);
+   |               ^^^^^^^^ not semantically valid as function parameter
+   |
+   = note: associated functions are those in `impl` or `trait` definitions
+
+error: `self` parameter is only allowed in associated functions
+  --> $DIR/self-param-semantic-fail.rs:38:15
+   |
+LL |     fn f6<'a>(&'a mut self);
+   |               ^^^^^^^^^^^^ not semantically valid as function parameter
+   |
+   = note: associated functions are those in `impl` or `trait` definitions
+
+error: `self` parameter is only allowed in associated functions
+  --> $DIR/self-param-semantic-fail.rs:40:11
+   |
+LL |     fn f7(self: u8);
+   |           ^^^^ not semantically valid as function parameter
+   |
+   = note: associated functions are those in `impl` or `trait` definitions
+
+error: `self` parameter is only allowed in associated functions
+  --> $DIR/self-param-semantic-fail.rs:42:11
+   |
+LL |     fn f8(mut self: u8);
+   |           ^^^^^^^^ not semantically valid as function parameter
+   |
+   = note: associated functions are those in `impl` or `trait` definitions
+
+error[E0130]: patterns aren't allowed in foreign function declarations
+  --> $DIR/self-param-semantic-fail.rs:42:11
+   |
+LL |     fn f8(mut self: u8);
+   |           ^^^^^^^^ pattern not allowed in foreign function
+
+error: `self` parameter is only allowed in associated functions
+  --> $DIR/self-param-semantic-fail.rs:47:14
+   |
+LL | type X1 = fn(self);
+   |              ^^^^ not semantically valid as function parameter
+   |
+   = note: associated functions are those in `impl` or `trait` definitions
+
+error: `self` parameter is only allowed in associated functions
+  --> $DIR/self-param-semantic-fail.rs:49:14
+   |
+LL | type X2 = fn(mut self);
+   |              ^^^^^^^^ not semantically valid as function parameter
+   |
+   = note: associated functions are those in `impl` or `trait` definitions
+
+error[E0561]: patterns aren't allowed in function pointer types
+  --> $DIR/self-param-semantic-fail.rs:49:14
+   |
+LL | type X2 = fn(mut self);
+   |              ^^^^^^^^
+
+error: `self` parameter is only allowed in associated functions
+  --> $DIR/self-param-semantic-fail.rs:52:14
+   |
+LL | type X3 = fn(&self);
+   |              ^^^^^ not semantically valid as function parameter
+   |
+   = note: associated functions are those in `impl` or `trait` definitions
+
+error: `self` parameter is only allowed in associated functions
+  --> $DIR/self-param-semantic-fail.rs:54:14
+   |
+LL | type X4 = fn(&mut self);
+   |              ^^^^^^^^^ not semantically valid as function parameter
+   |
+   = note: associated functions are those in `impl` or `trait` definitions
+
+error: `self` parameter is only allowed in associated functions
+  --> $DIR/self-param-semantic-fail.rs:56:22
+   |
+LL | type X5 = for<'a> fn(&'a self);
+   |                      ^^^^^^^^ not semantically valid as function parameter
+   |
+   = note: associated functions are those in `impl` or `trait` definitions
+
+error: `self` parameter is only allowed in associated functions
+  --> $DIR/self-param-semantic-fail.rs:58:22
+   |
+LL | type X6 = for<'a> fn(&'a mut self);
+   |                      ^^^^^^^^^^^^ not semantically valid as function parameter
+   |
+   = note: associated functions are those in `impl` or `trait` definitions
+
+error: `self` parameter is only allowed in associated functions
+  --> $DIR/self-param-semantic-fail.rs:60:14
+   |
+LL | type X7 = fn(self: u8);
+   |              ^^^^ not semantically valid as function parameter
+   |
+   = note: associated functions are those in `impl` or `trait` definitions
+
+error: `self` parameter is only allowed in associated functions
+  --> $DIR/self-param-semantic-fail.rs:62:14
+   |
+LL | type X8 = fn(mut self: u8);
+   |              ^^^^^^^^ not semantically valid as function parameter
+   |
+   = note: associated functions are those in `impl` or `trait` definitions
+
+error[E0561]: patterns aren't allowed in function pointer types
+  --> $DIR/self-param-semantic-fail.rs:62:14
+   |
+LL | type X8 = fn(mut self: u8);
+   |              ^^^^^^^^
+
+error: aborting due to 28 previous errors
+
+Some errors have detailed explanations: E0130, E0561.
+For more information about an error, try `rustc --explain E0130`.
diff --git a/tests/ui/parser/self-param-syntactic-pass.rs b/tests/ui/parser/self-param-syntactic-pass.rs
new file mode 100644
index 000000000..d7bb7863c
--- /dev/null
+++ b/tests/ui/parser/self-param-syntactic-pass.rs
@@ -0,0 +1,66 @@
+// This test ensures that `self` is syntactically accepted in all places an `FnDecl` is parsed.
+// FIXME(Centril): For now closures are an exception.
+
+// check-pass
+
+fn main() {}
+
+#[cfg(FALSE)]
+fn free() {
+    fn f(self) {}
+    fn f(mut self) {}
+    fn f(&self) {}
+    fn f(&mut self) {}
+    fn f(&'a self) {}
+    fn f(&'a mut self) {}
+    fn f(self: u8) {}
+    fn f(mut self: u8) {}
+}
+
+#[cfg(FALSE)]
+extern "C" {
+    fn f(self);
+    fn f(mut self);
+    fn f(&self);
+    fn f(&mut self);
+    fn f(&'a self);
+    fn f(&'a mut self);
+    fn f(self: u8);
+    fn f(mut self: u8);
+}
+
+#[cfg(FALSE)]
+trait X {
+    fn f(self) {}
+    fn f(mut self) {}
+    fn f(&self) {}
+    fn f(&mut self) {}
+    fn f(&'a self) {}
+    fn f(&'a mut self) {}
+    fn f(self: u8) {}
+    fn f(mut self: u8) {}
+}
+
+#[cfg(FALSE)]
+impl X for Y {
+    fn f(self) {}
+    fn f(mut self) {}
+    fn f(&self) {}
+    fn f(&mut self) {}
+    fn f(&'a self) {}
+    fn f(&'a mut self) {}
+    fn f(self: u8) {}
+    fn f(mut self: u8) {}
+}
+
+#[cfg(FALSE)]
+impl X for Y {
+    type X = fn(self);
+    type X = fn(mut self);
+    type X = fn(&self);
+    type X = fn(&mut self);
+    type X = fn(&'a self);
+    type X = fn(&'a mut self);
+    type X = fn(self: u8);
+    type X = fn(mut self: u8);
+}
diff --git a/tests/ui/parser/semi-after-closure-in-macro.rs b/tests/ui/parser/semi-after-closure-in-macro.rs
new file mode 100644
index 000000000..14efb6100
--- /dev/null
+++ b/tests/ui/parser/semi-after-closure-in-macro.rs
@@ -0,0 +1,14 @@
+// check-pass
+
+// Checks that the fix in #103222 doesn't also disqualify semicolons after
+// closures within parentheses *in macros*, where they're totally allowed.
+
+macro_rules! m {
+    (($expr:expr ; )) => {
+        $expr
+    };
+}
+
+fn main() {
+    let x = m!(( ||() ; ));
+}
diff --git a/tests/ui/parser/several-carriage-returns-in-doc-comment.rs b/tests/ui/parser/several-carriage-returns-in-doc-comment.rs
new file mode 100644
index 000000000..ee14c55d2
--- /dev/null
+++ b/tests/ui/parser/several-carriage-returns-in-doc-comment.rs
@@ -0,0 +1,10 @@
+// Issue #62863
+// ignore-tidy-cr
+
+// Note: if you see ^M in this file, that's how your editor renders literal `\r`
+
+/// This do
c comment contains 
three isolated `\r`
 symbols
+//~^ ERROR bare CR not allowed in doc-comment
+//~| ERROR bare CR not allowed in doc-comment
+//~| ERROR bare CR not allowed in doc-comment
+fn main() {}
diff --git a/tests/ui/parser/several-carriage-returns-in-doc-comment.stderr b/tests/ui/parser/several-carriage-returns-in-doc-comment.stderr
new file mode 100644
index 000000000..07066fc22
--- /dev/null
+++ b/tests/ui/parser/several-carriage-returns-in-doc-comment.stderr
@@ -0,0 +1,20 @@
+error: bare CR not allowed in doc-comment
+  --> $DIR/several-carriage-returns-in-doc-comment.rs:6:12
+   |
+LL | /// This do
c comment contains 
three isolated `\r`
 symbols
+   |            ^
+
+error: bare CR not allowed in doc-comment
+  --> $DIR/several-carriage-returns-in-doc-comment.rs:6:32
+   |
+LL | /// This do
c comment contains 
three isolated `\r`
 symbols
+   |                               ^
+
+error: bare CR not allowed in doc-comment
+  --> $DIR/several-carriage-returns-in-doc-comment.rs:6:52
+   |
+LL | /// This do
c comment contains 
three isolated `\r`
 symbols
+   |                                                  ^
+
+error: aborting due to 3 previous errors
+
diff --git a/tests/ui/parser/shebang/issue-71471-ignore-tidy.rs b/tests/ui/parser/shebang/issue-71471-ignore-tidy.rs
new file mode 100644
index 000000000..a25051808
--- /dev/null
+++ b/tests/ui/parser/shebang/issue-71471-ignore-tidy.rs
@@ -0,0 +1,2 @@
+
+#!B //~ expected `[`, found `B`
diff --git a/tests/ui/parser/shebang/issue-71471-ignore-tidy.stderr b/tests/ui/parser/shebang/issue-71471-ignore-tidy.stderr
new file mode 100644
index 000000000..896a9dc83
--- /dev/null
+++ b/tests/ui/parser/shebang/issue-71471-ignore-tidy.stderr
@@ -0,0 +1,8 @@
+error: expected `[`, found `B`
+  --> $DIR/issue-71471-ignore-tidy.rs:2:3
+   |
+LL | #!B
+   |   ^ expected `[`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/shebang/multiline-attrib.rs b/tests/ui/parser/shebang/multiline-attrib.rs
new file mode 100644
index 000000000..931c94c7f
--- /dev/null
+++ b/tests/ui/parser/shebang/multiline-attrib.rs
@@ -0,0 +1,7 @@
+#!
+[allow(unused_variables)]
+// check-pass
+
+fn main() {
+    let x = 5;
+}
diff --git a/tests/ui/parser/shebang/regular-attrib.rs b/tests/ui/parser/shebang/regular-attrib.rs
new file mode 100644
index 000000000..ca8fb0830
--- /dev/null
+++ b/tests/ui/parser/shebang/regular-attrib.rs
@@ -0,0 +1,5 @@
+#![allow(unused_variables)]
+// check-pass
+fn main() {
+    let x = 5;
+}
diff --git a/tests/ui/parser/shebang/shebang-and-attrib.rs b/tests/ui/parser/shebang/shebang-and-attrib.rs
new file mode 100644
index 000000000..61b89c655
--- /dev/null
+++ b/tests/ui/parser/shebang/shebang-and-attrib.rs
@@ -0,0 +1,9 @@
+#!/usr/bin/env run-cargo-script
+
+// check-pass
+#![allow(unused_variables)]
+
+
+fn main() {
+    let x = 5;
+}
diff --git a/tests/ui/parser/shebang/shebang-comment.rs b/tests/ui/parser/shebang/shebang-comment.rs
new file mode 100644
index 000000000..2b1ab0c57
--- /dev/null
+++ b/tests/ui/parser/shebang/shebang-comment.rs
@@ -0,0 +1,6 @@
+#!//bin/bash
+
+// check-pass
+fn main() {
+    println!("a valid shebang (that is also a rust comment)")
+}
diff --git a/tests/ui/parser/shebang/shebang-doc-comment.rs b/tests/ui/parser/shebang/shebang-doc-comment.rs
new file mode 100644
index 000000000..72866753e
--- /dev/null
+++ b/tests/ui/parser/shebang/shebang-doc-comment.rs
@@ -0,0 +1,3 @@
+#!///bin/bash
+[allow(unused_variables)]
+//~^ ERROR expected item, found `[`
diff --git a/tests/ui/parser/shebang/shebang-doc-comment.stderr b/tests/ui/parser/shebang/shebang-doc-comment.stderr
new file mode 100644
index 000000000..2227d45ec
--- /dev/null
+++ b/tests/ui/parser/shebang/shebang-doc-comment.stderr
@@ -0,0 +1,8 @@
+error: expected item, found `[`
+  --> $DIR/shebang-doc-comment.rs:2:1
+   |
+LL | [allow(unused_variables)]
+   | ^ expected item
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/shebang/shebang-empty.rs b/tests/ui/parser/shebang/shebang-empty.rs
new file mode 100644
index 000000000..e38cc637e
--- /dev/null
+++ b/tests/ui/parser/shebang/shebang-empty.rs
@@ -0,0 +1,4 @@
+#!
+
+// check-pass
+fn main() {}
diff --git a/tests/ui/parser/shebang/shebang-must-start-file.rs b/tests/ui/parser/shebang/shebang-must-start-file.rs
new file mode 100644
index 000000000..e0392572d
--- /dev/null
+++ b/tests/ui/parser/shebang/shebang-must-start-file.rs
@@ -0,0 +1,6 @@
+// something on the first line for tidy
+#!/bin/bash  //~ expected `[`, found `/`
+
+fn main() {
+    println!("ok!");
+}
diff --git a/tests/ui/parser/shebang/shebang-must-start-file.stderr b/tests/ui/parser/shebang/shebang-must-start-file.stderr
new file mode 100644
index 000000000..50543e8bd
--- /dev/null
+++ b/tests/ui/parser/shebang/shebang-must-start-file.stderr
@@ -0,0 +1,8 @@
+error: expected `[`, found `/`
+  --> $DIR/shebang-must-start-file.rs:2:3
+   |
+LL | #!/bin/bash
+   |   ^ expected `[`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/shebang/shebang-space.rs b/tests/ui/parser/shebang/shebang-space.rs
new file mode 100644
index 000000000..0978b759d
--- /dev/null
+++ b/tests/ui/parser/shebang/shebang-space.rs
@@ -0,0 +1,5 @@
+#!    
+
+// check-pass
+// ignore-tidy-end-whitespace
+fn main() {}
diff --git a/tests/ui/parser/shebang/sneaky-attrib.rs b/tests/ui/parser/shebang/sneaky-attrib.rs
new file mode 100644
index 000000000..b406cc3aa
--- /dev/null
+++ b/tests/ui/parser/shebang/sneaky-attrib.rs
@@ -0,0 +1,16 @@
+#!//bin/bash
+
+
+// This could not possibly be a shebang & also a valid rust file, since a Rust file
+// can't start with `[`
+/*
+    [ (mixing comments to also test that we ignore both types of comments)
+
+ */
+
+[allow(unused_variables)]
+
+// check-pass
+fn main() {
+    let x = 5;
+}
diff --git a/tests/ui/parser/shebang/valid-shebang.rs b/tests/ui/parser/shebang/valid-shebang.rs
new file mode 100644
index 000000000..e480d3da3
--- /dev/null
+++ b/tests/ui/parser/shebang/valid-shebang.rs
@@ -0,0 +1,6 @@
+#!/usr/bin/env run-cargo-script
+
+// check-pass
+fn main() {
+    println!("Hello World!");
+}
diff --git a/tests/ui/parser/similar-tokens.rs b/tests/ui/parser/similar-tokens.rs
new file mode 100644
index 000000000..e3024c61a
--- /dev/null
+++ b/tests/ui/parser/similar-tokens.rs
@@ -0,0 +1,11 @@
+#![allow(unused_imports)]
+
+pub mod x {
+    pub struct A;
+    pub struct B;
+}
+
+// `.` is similar to `,` so list parsing should continue to closing `}`
+use x::{A. B}; //~ ERROR expected one of `,`, `::`, `as`, or `}`, found `.`
+
+fn main() {}
diff --git a/tests/ui/parser/similar-tokens.stderr b/tests/ui/parser/similar-tokens.stderr
new file mode 100644
index 000000000..90acfc052
--- /dev/null
+++ b/tests/ui/parser/similar-tokens.stderr
@@ -0,0 +1,11 @@
+error: expected one of `,`, `::`, `as`, or `}`, found `.`
+  --> $DIR/similar-tokens.rs:9:10
+   |
+LL | use x::{A. B};
+   |          ^
+   |          |
+   |          expected one of `,`, `::`, `as`, or `}`
+   |          help: missing `,`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/slowparse-bstring.rs b/tests/ui/parser/slowparse-bstring.rs
new file mode 100644
index 000000000..f3a6a6683
--- /dev/null
+++ b/tests/ui/parser/slowparse-bstring.rs
@@ -0,0 +1,6 @@
+// run-pass
+// ignore-tidy-linelength
+
+// Issue #16624
+
+fn main() { 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xx"; }
diff --git a/tests/ui/parser/slowparse-string.rs b/tests/ui/parser/slowparse-string.rs
new file mode 100644
index 000000000..6ebc61dae
--- /dev/null
+++ b/tests/ui/parser/slowparse-string.rs
@@ -0,0 +1,6 @@
+// run-pass
+// ignore-tidy-linelength
+
+// Issue #16624
+
+fn main() { "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx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x"; }
diff --git a/tests/ui/parser/stmt_expr_attrs_placement.rs b/tests/ui/parser/stmt_expr_attrs_placement.rs
new file mode 100644
index 000000000..5e9d29a15
--- /dev/null
+++ b/tests/ui/parser/stmt_expr_attrs_placement.rs
@@ -0,0 +1,38 @@
+#![feature(stmt_expr_attributes)]
+
+// Test that various placements of the inner attribute are parsed correctly,
+// or not.
+
+fn main() {
+    let a = #![allow(warnings)] (1, 2);
+    //~^ ERROR an inner attribute is not permitted in this context
+
+    let b = (#![allow(warnings)] 1, 2);
+    //~^ ERROR an inner attribute is not permitted in this context
+
+    let c = {
+        #![allow(warnings)]
+        (#![allow(warnings)] 1, 2)
+        //~^ ERROR an inner attribute is not permitted in this context
+    };
+
+    let d = {
+        #![allow(warnings)]
+        let e = (#![allow(warnings)] 1, 2);
+        //~^ ERROR an inner attribute is not permitted in this context
+        e
+    };
+
+    let e = [#![allow(warnings)] 1, 2];
+    //~^ ERROR an inner attribute is not permitted in this context
+
+    let f = [#![allow(warnings)] 1; 0];
+    //~^ ERROR an inner attribute is not permitted in this context
+
+    let g = match true { #![allow(warnings)] _ => {} };
+
+
+    struct MyStruct { field: u8 }
+    let h = MyStruct { #![allow(warnings)] field: 0 };
+    //~^ ERROR an inner attribute is not permitted in this context
+}
diff --git a/tests/ui/parser/stmt_expr_attrs_placement.stderr b/tests/ui/parser/stmt_expr_attrs_placement.stderr
new file mode 100644
index 000000000..bf4005698
--- /dev/null
+++ b/tests/ui/parser/stmt_expr_attrs_placement.stderr
@@ -0,0 +1,65 @@
+error: an inner attribute is not permitted in this context
+  --> $DIR/stmt_expr_attrs_placement.rs:7:13
+   |
+LL |     let a = #![allow(warnings)] (1, 2);
+   |             ^^^^^^^^^^^^^^^^^^^
+   |
+   = note: inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually found at the beginning of source files
+   = note: outer attributes, like `#[test]`, annotate the item following them
+
+error: an inner attribute is not permitted in this context
+  --> $DIR/stmt_expr_attrs_placement.rs:10:14
+   |
+LL |     let b = (#![allow(warnings)] 1, 2);
+   |              ^^^^^^^^^^^^^^^^^^^
+   |
+   = note: inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually found at the beginning of source files
+   = note: outer attributes, like `#[test]`, annotate the item following them
+
+error: an inner attribute is not permitted in this context
+  --> $DIR/stmt_expr_attrs_placement.rs:15:10
+   |
+LL |         (#![allow(warnings)] 1, 2)
+   |          ^^^^^^^^^^^^^^^^^^^
+   |
+   = note: inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually found at the beginning of source files
+   = note: outer attributes, like `#[test]`, annotate the item following them
+
+error: an inner attribute is not permitted in this context
+  --> $DIR/stmt_expr_attrs_placement.rs:21:18
+   |
+LL |         let e = (#![allow(warnings)] 1, 2);
+   |                  ^^^^^^^^^^^^^^^^^^^
+   |
+   = note: inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually found at the beginning of source files
+   = note: outer attributes, like `#[test]`, annotate the item following them
+
+error: an inner attribute is not permitted in this context
+  --> $DIR/stmt_expr_attrs_placement.rs:26:14
+   |
+LL |     let e = [#![allow(warnings)] 1, 2];
+   |              ^^^^^^^^^^^^^^^^^^^
+   |
+   = note: inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually found at the beginning of source files
+   = note: outer attributes, like `#[test]`, annotate the item following them
+
+error: an inner attribute is not permitted in this context
+  --> $DIR/stmt_expr_attrs_placement.rs:29:14
+   |
+LL |     let f = [#![allow(warnings)] 1; 0];
+   |              ^^^^^^^^^^^^^^^^^^^
+   |
+   = note: inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually found at the beginning of source files
+   = note: outer attributes, like `#[test]`, annotate the item following them
+
+error: an inner attribute is not permitted in this context
+  --> $DIR/stmt_expr_attrs_placement.rs:36:24
+   |
+LL |     let h = MyStruct { #![allow(warnings)] field: 0 };
+   |                        ^^^^^^^^^^^^^^^^^^^
+   |
+   = note: inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually found at the beginning of source files
+   = note: outer attributes, like `#[test]`, annotate the item following them
+
+error: aborting due to 7 previous errors
+
diff --git a/tests/ui/parser/stripped-nested-outline-mod-pass.rs b/tests/ui/parser/stripped-nested-outline-mod-pass.rs
new file mode 100644
index 000000000..1b4669a43
--- /dev/null
+++ b/tests/ui/parser/stripped-nested-outline-mod-pass.rs
@@ -0,0 +1,13 @@
+// Expansion drives parsing, so conditional compilation will strip
+// out outline modules and we will never attempt parsing them.
+
+// check-pass
+
+fn main() {}
+
+#[cfg(FALSE)]
+mod foo {
+    mod bar {
+        mod baz; // This was an error before.
+    }
+}
diff --git a/tests/ui/parser/struct-default-values-and-missing-field-separator.fixed b/tests/ui/parser/struct-default-values-and-missing-field-separator.fixed
new file mode 100644
index 000000000..28191b826
--- /dev/null
+++ b/tests/ui/parser/struct-default-values-and-missing-field-separator.fixed
@@ -0,0 +1,35 @@
+// run-rustfix
+#![allow(dead_code)]
+
+enum E {
+    A,
+}
+
+struct S {
+    field1: i32, //~ ERROR default values on `struct` fields aren't supported
+    field2: E, //~ ERROR default values on `struct` fields aren't supported
+    field3: i32, //~ ERROR default values on `struct` fields aren't supported
+    field4: i32, //~ ERROR default values on `struct` fields aren't supported
+    field5: E, //~ ERROR default values on `struct` fields aren't supported
+    field6: E, //~ ERROR default values on `struct` fields aren't supported
+}
+
+struct S1 {
+    field1: i32, //~ ERROR expected `,`, or `}`, found `field2`
+    field2: E, //~ ERROR expected `,`, or `}`, found `field3`
+    field3: i32, //~ ERROR default values on `struct` fields aren't supported
+    field4: i32, //~ ERROR default values on `struct` fields aren't supported
+    field5: E, //~ ERROR default values on `struct` fields aren't supported
+    field6: E, //~ ERROR default values on `struct` fields aren't supported
+}
+
+struct S2 {
+    field1 : i32, //~ ERROR expected `:`, found `=`
+    field2: E, //~ ERROR expected `:`, found `;`
+}
+
+const fn foo(_: i32) -> E {
+    E::A
+}
+
+fn main() {}
diff --git a/tests/ui/parser/struct-default-values-and-missing-field-separator.rs b/tests/ui/parser/struct-default-values-and-missing-field-separator.rs
new file mode 100644
index 000000000..924cb08a9
--- /dev/null
+++ b/tests/ui/parser/struct-default-values-and-missing-field-separator.rs
@@ -0,0 +1,35 @@
+// run-rustfix
+#![allow(dead_code)]
+
+enum E {
+    A,
+}
+
+struct S {
+    field1: i32 = 42, //~ ERROR default values on `struct` fields aren't supported
+    field2: E = E::A, //~ ERROR default values on `struct` fields aren't supported
+    field3: i32 = 1 + 2, //~ ERROR default values on `struct` fields aren't supported
+    field4: i32 = { 1 + 2 }, //~ ERROR default values on `struct` fields aren't supported
+    field5: E = foo(42), //~ ERROR default values on `struct` fields aren't supported
+    field6: E = { foo(42) }, //~ ERROR default values on `struct` fields aren't supported
+}
+
+struct S1 {
+    field1: i32 //~ ERROR expected `,`, or `}`, found `field2`
+    field2: E //~ ERROR expected `,`, or `}`, found `field3`
+    field3: i32 = 1 + 2, //~ ERROR default values on `struct` fields aren't supported
+    field4: i32 = { 1 + 2 }, //~ ERROR default values on `struct` fields aren't supported
+    field5: E = foo(42), //~ ERROR default values on `struct` fields aren't supported
+    field6: E = { foo(42) }, //~ ERROR default values on `struct` fields aren't supported
+}
+
+struct S2 {
+    field1 = i32, //~ ERROR expected `:`, found `=`
+    field2; E, //~ ERROR expected `:`, found `;`
+}
+
+const fn foo(_: i32) -> E {
+    E::A
+}
+
+fn main() {}
diff --git a/tests/ui/parser/struct-default-values-and-missing-field-separator.stderr b/tests/ui/parser/struct-default-values-and-missing-field-separator.stderr
new file mode 100644
index 000000000..7f16ebcfc
--- /dev/null
+++ b/tests/ui/parser/struct-default-values-and-missing-field-separator.stderr
@@ -0,0 +1,92 @@
+error: default values on `struct` fields aren't supported
+  --> $DIR/struct-default-values-and-missing-field-separator.rs:9:16
+   |
+LL |     field1: i32 = 42,
+   |                ^^^^^ help: remove this unsupported default value
+
+error: default values on `struct` fields aren't supported
+  --> $DIR/struct-default-values-and-missing-field-separator.rs:10:14
+   |
+LL |     field2: E = E::A,
+   |              ^^^^^^^ help: remove this unsupported default value
+
+error: default values on `struct` fields aren't supported
+  --> $DIR/struct-default-values-and-missing-field-separator.rs:11:16
+   |
+LL |     field3: i32 = 1 + 2,
+   |                ^^^^^^^^ help: remove this unsupported default value
+
+error: default values on `struct` fields aren't supported
+  --> $DIR/struct-default-values-and-missing-field-separator.rs:12:16
+   |
+LL |     field4: i32 = { 1 + 2 },
+   |                ^^^^^^^^^^^^ help: remove this unsupported default value
+
+error: default values on `struct` fields aren't supported
+  --> $DIR/struct-default-values-and-missing-field-separator.rs:13:14
+   |
+LL |     field5: E = foo(42),
+   |              ^^^^^^^^^^ help: remove this unsupported default value
+
+error: default values on `struct` fields aren't supported
+  --> $DIR/struct-default-values-and-missing-field-separator.rs:14:14
+   |
+LL |     field6: E = { foo(42) },
+   |              ^^^^^^^^^^^^^^ help: remove this unsupported default value
+
+error: expected `,`, or `}`, found `field2`
+  --> $DIR/struct-default-values-and-missing-field-separator.rs:18:16
+   |
+LL |     field1: i32
+   |                ^ help: try adding a comma: `,`
+
+error: expected `,`, or `}`, found `field3`
+  --> $DIR/struct-default-values-and-missing-field-separator.rs:19:14
+   |
+LL |     field2: E
+   |              ^ help: try adding a comma: `,`
+
+error: default values on `struct` fields aren't supported
+  --> $DIR/struct-default-values-and-missing-field-separator.rs:20:16
+   |
+LL |     field3: i32 = 1 + 2,
+   |                ^^^^^^^^ help: remove this unsupported default value
+
+error: default values on `struct` fields aren't supported
+  --> $DIR/struct-default-values-and-missing-field-separator.rs:21:16
+   |
+LL |     field4: i32 = { 1 + 2 },
+   |                ^^^^^^^^^^^^ help: remove this unsupported default value
+
+error: default values on `struct` fields aren't supported
+  --> $DIR/struct-default-values-and-missing-field-separator.rs:22:14
+   |
+LL |     field5: E = foo(42),
+   |              ^^^^^^^^^^ help: remove this unsupported default value
+
+error: default values on `struct` fields aren't supported
+  --> $DIR/struct-default-values-and-missing-field-separator.rs:23:14
+   |
+LL |     field6: E = { foo(42) },
+   |              ^^^^^^^^^^^^^^ help: remove this unsupported default value
+
+error: expected `:`, found `=`
+  --> $DIR/struct-default-values-and-missing-field-separator.rs:27:12
+   |
+LL |     field1 = i32,
+   |            ^
+   |            |
+   |            expected `:`
+   |            help: field names and their types are separated with `:`
+
+error: expected `:`, found `;`
+  --> $DIR/struct-default-values-and-missing-field-separator.rs:28:11
+   |
+LL |     field2; E,
+   |           ^
+   |           |
+   |           expected `:`
+   |           help: field names and their types are separated with `:`
+
+error: aborting due to 14 previous errors
+
diff --git a/tests/ui/parser/struct-field-numeric-shorthand.rs b/tests/ui/parser/struct-field-numeric-shorthand.rs
new file mode 100644
index 000000000..645abd9c7
--- /dev/null
+++ b/tests/ui/parser/struct-field-numeric-shorthand.rs
@@ -0,0 +1,9 @@
+struct Rgb(u8, u8, u8);
+
+fn main() {
+    let _ = Rgb { 0, 1, 2 };
+    //~^ ERROR expected identifier, found `0`
+    //~| ERROR expected identifier, found `1`
+    //~| ERROR expected identifier, found `2`
+    //~| ERROR missing fields `0`, `1` and `2` in initializer of `Rgb`
+}
diff --git a/tests/ui/parser/struct-field-numeric-shorthand.stderr b/tests/ui/parser/struct-field-numeric-shorthand.stderr
new file mode 100644
index 000000000..bfb8a931b
--- /dev/null
+++ b/tests/ui/parser/struct-field-numeric-shorthand.stderr
@@ -0,0 +1,33 @@
+error: expected identifier, found `0`
+  --> $DIR/struct-field-numeric-shorthand.rs:4:19
+   |
+LL |     let _ = Rgb { 0, 1, 2 };
+   |             ---   ^ expected identifier
+   |             |
+   |             while parsing this struct
+
+error: expected identifier, found `1`
+  --> $DIR/struct-field-numeric-shorthand.rs:4:22
+   |
+LL |     let _ = Rgb { 0, 1, 2 };
+   |             ---      ^ expected identifier
+   |             |
+   |             while parsing this struct
+
+error: expected identifier, found `2`
+  --> $DIR/struct-field-numeric-shorthand.rs:4:25
+   |
+LL |     let _ = Rgb { 0, 1, 2 };
+   |             ---         ^ expected identifier
+   |             |
+   |             while parsing this struct
+
+error[E0063]: missing fields `0`, `1` and `2` in initializer of `Rgb`
+  --> $DIR/struct-field-numeric-shorthand.rs:4:13
+   |
+LL |     let _ = Rgb { 0, 1, 2 };
+   |             ^^^ missing `0`, `1` and `2`
+
+error: aborting due to 4 previous errors
+
+For more information about this error, try `rustc --explain E0063`.
diff --git a/tests/ui/parser/struct-filed-with-attr.fixed b/tests/ui/parser/struct-filed-with-attr.fixed
new file mode 100644
index 000000000..a799ec8ca
--- /dev/null
+++ b/tests/ui/parser/struct-filed-with-attr.fixed
@@ -0,0 +1,18 @@
+// Issue: 100461, Try to give a helpful diagnostic even when the next struct field has an attribute.
+// run-rustfix
+
+struct Feelings {
+    owo: bool,
+    //~^ ERROR expected `,`, or `}`, found `#`
+    #[allow(unused)]
+    uwu: bool,
+}
+
+impl Feelings {
+    #[allow(unused)]
+    fn hmm(&self) -> bool {
+        self.owo
+    }
+}
+
+fn main() { }
diff --git a/tests/ui/parser/struct-filed-with-attr.rs b/tests/ui/parser/struct-filed-with-attr.rs
new file mode 100644
index 000000000..bfc78e15b
--- /dev/null
+++ b/tests/ui/parser/struct-filed-with-attr.rs
@@ -0,0 +1,18 @@
+// Issue: 100461, Try to give a helpful diagnostic even when the next struct field has an attribute.
+// run-rustfix
+
+struct Feelings {
+    owo: bool
+    //~^ ERROR expected `,`, or `}`, found `#`
+    #[allow(unused)]
+    uwu: bool,
+}
+
+impl Feelings {
+    #[allow(unused)]
+    fn hmm(&self) -> bool {
+        self.owo
+    }
+}
+
+fn main() { }
diff --git a/tests/ui/parser/struct-filed-with-attr.stderr b/tests/ui/parser/struct-filed-with-attr.stderr
new file mode 100644
index 000000000..c2cd7e82e
--- /dev/null
+++ b/tests/ui/parser/struct-filed-with-attr.stderr
@@ -0,0 +1,8 @@
+error: expected `,`, or `}`, found `#`
+  --> $DIR/struct-filed-with-attr.rs:5:14
+   |
+LL |     owo: bool
+   |              ^ help: try adding a comma: `,`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/struct-literal-in-for.rs b/tests/ui/parser/struct-literal-in-for.rs
new file mode 100644
index 000000000..3227ae37b
--- /dev/null
+++ b/tests/ui/parser/struct-literal-in-for.rs
@@ -0,0 +1,17 @@
+struct Foo {
+    x: isize,
+}
+
+impl Foo {
+    fn hi(&self) -> bool {
+        true
+    }
+}
+
+fn main() {
+    for x in Foo { //~ ERROR struct literals are not allowed here
+        x: 3       //~^ ERROR `bool` is not an iterator
+    }.hi() {
+        println!("yo");
+    }
+}
diff --git a/tests/ui/parser/struct-literal-in-for.stderr b/tests/ui/parser/struct-literal-in-for.stderr
new file mode 100644
index 000000000..1c91eba68
--- /dev/null
+++ b/tests/ui/parser/struct-literal-in-for.stderr
@@ -0,0 +1,31 @@
+error: struct literals are not allowed here
+  --> $DIR/struct-literal-in-for.rs:12:14
+   |
+LL |       for x in Foo {
+   |  ______________^
+LL | |         x: 3
+LL | |     }.hi() {
+   | |_____^
+   |
+help: surround the struct literal with parentheses
+   |
+LL ~     for x in (Foo {
+LL |         x: 3
+LL ~     }).hi() {
+   |
+
+error[E0277]: `bool` is not an iterator
+  --> $DIR/struct-literal-in-for.rs:12:14
+   |
+LL |       for x in Foo {
+   |  ______________^
+LL | |         x: 3
+LL | |     }.hi() {
+   | |__________^ `bool` is not an iterator
+   |
+   = help: the trait `Iterator` is not implemented for `bool`
+   = note: required for `bool` to implement `IntoIterator`
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0277`.
diff --git a/tests/ui/parser/struct-literal-in-if.rs b/tests/ui/parser/struct-literal-in-if.rs
new file mode 100644
index 000000000..2ce2c8f18
--- /dev/null
+++ b/tests/ui/parser/struct-literal-in-if.rs
@@ -0,0 +1,17 @@
+struct Foo {
+    x: isize,
+}
+
+impl Foo {
+    fn hi(&self) -> bool {
+        true
+    }
+}
+
+fn main() {
+    if Foo { //~ ERROR struct literals are not allowed here
+        x: 3
+    }.hi() {
+        println!("yo");
+    }
+}
diff --git a/tests/ui/parser/struct-literal-in-if.stderr b/tests/ui/parser/struct-literal-in-if.stderr
new file mode 100644
index 000000000..b5a9864bb
--- /dev/null
+++ b/tests/ui/parser/struct-literal-in-if.stderr
@@ -0,0 +1,18 @@
+error: struct literals are not allowed here
+  --> $DIR/struct-literal-in-if.rs:12:8
+   |
+LL |       if Foo {
+   |  ________^
+LL | |         x: 3
+LL | |     }.hi() {
+   | |_____^
+   |
+help: surround the struct literal with parentheses
+   |
+LL ~     if (Foo {
+LL |         x: 3
+LL ~     }).hi() {
+   |
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/struct-literal-in-match-discriminant.rs b/tests/ui/parser/struct-literal-in-match-discriminant.rs
new file mode 100644
index 000000000..ce132df5a
--- /dev/null
+++ b/tests/ui/parser/struct-literal-in-match-discriminant.rs
@@ -0,0 +1,13 @@
+struct Foo {
+    x: isize,
+}
+
+fn main() {
+    match Foo { //~ ERROR struct literals are not allowed here
+        x: 3
+    } {
+        Foo {
+            x: x
+        } => {}
+    }
+}
diff --git a/tests/ui/parser/struct-literal-in-match-discriminant.stderr b/tests/ui/parser/struct-literal-in-match-discriminant.stderr
new file mode 100644
index 000000000..692b4d735
--- /dev/null
+++ b/tests/ui/parser/struct-literal-in-match-discriminant.stderr
@@ -0,0 +1,18 @@
+error: struct literals are not allowed here
+  --> $DIR/struct-literal-in-match-discriminant.rs:6:11
+   |
+LL |       match Foo {
+   |  ___________^
+LL | |         x: 3
+LL | |     } {
+   | |_____^
+   |
+help: surround the struct literal with parentheses
+   |
+LL ~     match (Foo {
+LL |         x: 3
+LL ~     }) {
+   |
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/struct-literal-in-match-guard.rs b/tests/ui/parser/struct-literal-in-match-guard.rs
new file mode 100644
index 000000000..bf0551b5c
--- /dev/null
+++ b/tests/ui/parser/struct-literal-in-match-guard.rs
@@ -0,0 +1,18 @@
+// check-pass
+
+// Unlike `if` condition, `match` guards accept struct literals.
+// This is detected in <https://github.com/rust-lang/rust/pull/74566#issuecomment-663613705>.
+
+#[derive(PartialEq)]
+struct Foo {
+    x: isize,
+}
+
+fn foo(f: Foo) {
+    match () {
+        () if f == Foo { x: 42 } => {}
+        _ => {}
+    }
+}
+
+fn main() {}
diff --git a/tests/ui/parser/struct-literal-in-while.rs b/tests/ui/parser/struct-literal-in-while.rs
new file mode 100644
index 000000000..5000ce85b
--- /dev/null
+++ b/tests/ui/parser/struct-literal-in-while.rs
@@ -0,0 +1,17 @@
+struct Foo {
+    x: isize,
+}
+
+impl Foo {
+    fn hi(&self) -> bool {
+        true
+    }
+}
+
+fn main() {
+    while Foo { //~ ERROR struct literals are not allowed here
+        x: 3
+    }.hi() {
+        println!("yo");
+    }
+}
diff --git a/tests/ui/parser/struct-literal-in-while.stderr b/tests/ui/parser/struct-literal-in-while.stderr
new file mode 100644
index 000000000..17e9277e0
--- /dev/null
+++ b/tests/ui/parser/struct-literal-in-while.stderr
@@ -0,0 +1,18 @@
+error: struct literals are not allowed here
+  --> $DIR/struct-literal-in-while.rs:12:11
+   |
+LL |       while Foo {
+   |  ___________^
+LL | |         x: 3
+LL | |     }.hi() {
+   | |_____^
+   |
+help: surround the struct literal with parentheses
+   |
+LL ~     while (Foo {
+LL |         x: 3
+LL ~     }).hi() {
+   |
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/struct-literal-restrictions-in-lamda.rs b/tests/ui/parser/struct-literal-restrictions-in-lamda.rs
new file mode 100644
index 000000000..e185153dc
--- /dev/null
+++ b/tests/ui/parser/struct-literal-restrictions-in-lamda.rs
@@ -0,0 +1,17 @@
+struct Foo {
+    x: isize,
+}
+
+impl Foo {
+    fn hi(&self) -> bool {
+        true
+    }
+}
+
+fn main() {
+    while || Foo { //~ ERROR struct literals are not allowed here
+        x: 3       //~^ ERROR mismatched types
+    }.hi() {
+        println!("yo");
+    }
+}
diff --git a/tests/ui/parser/struct-literal-restrictions-in-lamda.stderr b/tests/ui/parser/struct-literal-restrictions-in-lamda.stderr
new file mode 100644
index 000000000..0852c7cb4
--- /dev/null
+++ b/tests/ui/parser/struct-literal-restrictions-in-lamda.stderr
@@ -0,0 +1,37 @@
+error: struct literals are not allowed here
+  --> $DIR/struct-literal-restrictions-in-lamda.rs:12:14
+   |
+LL |       while || Foo {
+   |  ______________^
+LL | |         x: 3
+LL | |     }.hi() {
+   | |_____^
+   |
+help: surround the struct literal with parentheses
+   |
+LL ~     while || (Foo {
+LL |         x: 3
+LL ~     }).hi() {
+   |
+
+error[E0308]: mismatched types
+  --> $DIR/struct-literal-restrictions-in-lamda.rs:12:11
+   |
+LL |       while || Foo {
+   |  ___________^
+LL | |         x: 3
+LL | |     }.hi() {
+   | |__________^ expected `bool`, found closure
+   |
+   = note: expected type `bool`
+           found closure `[closure@$DIR/struct-literal-restrictions-in-lamda.rs:12:11: 12:13]`
+help: use parentheses to call this closure
+   |
+LL ~     while (|| Foo {
+LL |         x: 3
+LL ~     }.hi())() {
+   |
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/parser/struct-literal-variant-in-if.rs b/tests/ui/parser/struct-literal-variant-in-if.rs
new file mode 100644
index 000000000..4ef8effaf
--- /dev/null
+++ b/tests/ui/parser/struct-literal-variant-in-if.rs
@@ -0,0 +1,25 @@
+#[derive(Copy, Clone, Debug, Hash, PartialEq, Eq)]
+enum E {
+    V { field: bool },
+    I { field1: bool, field2: usize },
+    J { field: isize },
+    K { field: &'static str},
+}
+fn test_E(x: E) {
+    let field = true;
+    if x == E::V { field } {}
+    //~^ ERROR expected value, found struct variant `E::V`
+    //~| ERROR mismatched types
+    if x == E::I { field1: true, field2: 42 } {}
+    //~^ ERROR struct literals are not allowed here
+    if x == E::V { field: false } {}
+    //~^ ERROR struct literals are not allowed here
+    if x == E::J { field: -42 } {}
+    //~^ ERROR struct literals are not allowed here
+    if x == E::K { field: "" } {}
+    //~^ ERROR struct literals are not allowed here
+    let y: usize = ();
+    //~^ ERROR mismatched types
+}
+
+fn main() {}
diff --git a/tests/ui/parser/struct-literal-variant-in-if.stderr b/tests/ui/parser/struct-literal-variant-in-if.stderr
new file mode 100644
index 000000000..9f0c0074d
--- /dev/null
+++ b/tests/ui/parser/struct-literal-variant-in-if.stderr
@@ -0,0 +1,71 @@
+error: struct literals are not allowed here
+  --> $DIR/struct-literal-variant-in-if.rs:13:13
+   |
+LL |     if x == E::I { field1: true, field2: 42 } {}
+   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+help: surround the struct literal with parentheses
+   |
+LL |     if x == (E::I { field1: true, field2: 42 }) {}
+   |             +                                 +
+
+error: struct literals are not allowed here
+  --> $DIR/struct-literal-variant-in-if.rs:15:13
+   |
+LL |     if x == E::V { field: false } {}
+   |             ^^^^^^^^^^^^^^^^^^^^^
+   |
+help: surround the struct literal with parentheses
+   |
+LL |     if x == (E::V { field: false }) {}
+   |             +                     +
+
+error: struct literals are not allowed here
+  --> $DIR/struct-literal-variant-in-if.rs:17:13
+   |
+LL |     if x == E::J { field: -42 } {}
+   |             ^^^^^^^^^^^^^^^^^^^
+   |
+help: surround the struct literal with parentheses
+   |
+LL |     if x == (E::J { field: -42 }) {}
+   |             +                   +
+
+error: struct literals are not allowed here
+  --> $DIR/struct-literal-variant-in-if.rs:19:13
+   |
+LL |     if x == E::K { field: "" } {}
+   |             ^^^^^^^^^^^^^^^^^^
+   |
+help: surround the struct literal with parentheses
+   |
+LL |     if x == (E::K { field: "" }) {}
+   |             +                  +
+
+error[E0533]: expected value, found struct variant `E::V`
+  --> $DIR/struct-literal-variant-in-if.rs:10:13
+   |
+LL |     if x == E::V { field } {}
+   |             ^^^^ not a value
+
+error[E0308]: mismatched types
+  --> $DIR/struct-literal-variant-in-if.rs:10:20
+   |
+LL |     if x == E::V { field } {}
+   |     ---------------^^^^^--
+   |     |              |
+   |     |              expected `()`, found `bool`
+   |     expected this to be `()`
+
+error[E0308]: mismatched types
+  --> $DIR/struct-literal-variant-in-if.rs:21:20
+   |
+LL |     let y: usize = ();
+   |            -----   ^^ expected `usize`, found `()`
+   |            |
+   |            expected due to this
+
+error: aborting due to 7 previous errors
+
+Some errors have detailed explanations: E0308, E0533.
+For more information about an error, try `rustc --explain E0308`.
diff --git a/tests/ui/parser/suggest-assoc-const.fixed b/tests/ui/parser/suggest-assoc-const.fixed
new file mode 100644
index 000000000..259f37b23
--- /dev/null
+++ b/tests/ui/parser/suggest-assoc-const.fixed
@@ -0,0 +1,10 @@
+// Issue: 101797, Suggest associated const for incorrect use of let in traits
+// run-rustfix
+trait Trait {
+    const _X: i32;
+    //~^ ERROR non-item in item list
+}
+
+fn main() {
+
+}
diff --git a/tests/ui/parser/suggest-assoc-const.rs b/tests/ui/parser/suggest-assoc-const.rs
new file mode 100644
index 000000000..c7be712ec
--- /dev/null
+++ b/tests/ui/parser/suggest-assoc-const.rs
@@ -0,0 +1,10 @@
+// Issue: 101797, Suggest associated const for incorrect use of let in traits
+// run-rustfix
+trait Trait {
+    let _X: i32;
+    //~^ ERROR non-item in item list
+}
+
+fn main() {
+
+}
diff --git a/tests/ui/parser/suggest-assoc-const.stderr b/tests/ui/parser/suggest-assoc-const.stderr
new file mode 100644
index 000000000..2ddfa07c5
--- /dev/null
+++ b/tests/ui/parser/suggest-assoc-const.stderr
@@ -0,0 +1,8 @@
+error: non-item in item list
+  --> $DIR/suggest-assoc-const.rs:4:5
+   |
+LL |     let _X: i32;
+   |     ^^^ help: consider using `const` instead of `let` for associated const: `const`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/suggest-const-for-global-var.rs b/tests/ui/parser/suggest-const-for-global-var.rs
new file mode 100644
index 000000000..d6216cb7a
--- /dev/null
+++ b/tests/ui/parser/suggest-const-for-global-var.rs
@@ -0,0 +1,6 @@
+let X: i32 = 12;
+//~^ ERROR expected item, found keyword `let`
+
+fn main() {
+    println!("{}", X);
+}
diff --git a/tests/ui/parser/suggest-const-for-global-var.stderr b/tests/ui/parser/suggest-const-for-global-var.stderr
new file mode 100644
index 000000000..94e44ec7f
--- /dev/null
+++ b/tests/ui/parser/suggest-const-for-global-var.stderr
@@ -0,0 +1,8 @@
+error: expected item, found keyword `let`
+  --> $DIR/suggest-const-for-global-var.rs:1:1
+   |
+LL | let X: i32 = 12;
+   | ^^^ consider using `const` or `static` instead of `let` for global variables
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/suggest-removing-semicolon-after-impl-trait-items.fixed b/tests/ui/parser/suggest-removing-semicolon-after-impl-trait-items.fixed
new file mode 100644
index 000000000..637047354
--- /dev/null
+++ b/tests/ui/parser/suggest-removing-semicolon-after-impl-trait-items.fixed
@@ -0,0 +1,7 @@
+// run-rustfix
+
+trait Foo {
+    fn bar() {} //~ ERROR non-item in item list
+}
+
+fn main() {}
diff --git a/tests/ui/parser/suggest-removing-semicolon-after-impl-trait-items.rs b/tests/ui/parser/suggest-removing-semicolon-after-impl-trait-items.rs
new file mode 100644
index 000000000..4650b05e2
--- /dev/null
+++ b/tests/ui/parser/suggest-removing-semicolon-after-impl-trait-items.rs
@@ -0,0 +1,7 @@
+// run-rustfix
+
+trait Foo {
+    fn bar() {}; //~ ERROR non-item in item list
+}
+
+fn main() {}
diff --git a/tests/ui/parser/suggest-removing-semicolon-after-impl-trait-items.stderr b/tests/ui/parser/suggest-removing-semicolon-after-impl-trait-items.stderr
new file mode 100644
index 000000000..396e0c130
--- /dev/null
+++ b/tests/ui/parser/suggest-removing-semicolon-after-impl-trait-items.stderr
@@ -0,0 +1,15 @@
+error: non-item in item list
+  --> $DIR/suggest-removing-semicolon-after-impl-trait-items.rs:4:16
+   |
+LL | trait Foo {
+   |           - item list starts here
+LL |     fn bar() {};
+   |                ^
+   |                |
+   |                non-item starts here
+   |                help: consider removing this semicolon
+LL | }
+   | - item list ends here
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/suggest-semi-in-array.rs b/tests/ui/parser/suggest-semi-in-array.rs
new file mode 100644
index 000000000..9ce2e59e5
--- /dev/null
+++ b/tests/ui/parser/suggest-semi-in-array.rs
@@ -0,0 +1,5 @@
+fn main() {
+    let v = [1
+    2];
+    //~^ ERROR expected one of `,`, `.`, `;`, `?`, `]`, or an operator, found `2`
+}
diff --git a/tests/ui/parser/suggest-semi-in-array.stderr b/tests/ui/parser/suggest-semi-in-array.stderr
new file mode 100644
index 000000000..d7cd6efae
--- /dev/null
+++ b/tests/ui/parser/suggest-semi-in-array.stderr
@@ -0,0 +1,10 @@
+error: expected one of `,`, `.`, `;`, `?`, `]`, or an operator, found `2`
+  --> $DIR/suggest-semi-in-array.rs:3:5
+   |
+LL |     let v = [1
+   |               - expected one of `,`, `.`, `;`, `?`, `]`, or an operator
+LL |     2];
+   |     ^ unexpected token
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/suggest-semicolon-before-array.fixed b/tests/ui/parser/suggest-semicolon-before-array.fixed
new file mode 100644
index 000000000..a06b58b27
--- /dev/null
+++ b/tests/ui/parser/suggest-semicolon-before-array.fixed
@@ -0,0 +1,11 @@
+// run-rustfix
+#![allow(dead_code)]
+
+fn foo() {}
+
+fn bar() -> [u8; 2] {
+    foo();
+    [1, 3] //~ ERROR expected `;`, found `[`
+}
+
+fn main() {}
diff --git a/tests/ui/parser/suggest-semicolon-before-array.rs b/tests/ui/parser/suggest-semicolon-before-array.rs
new file mode 100644
index 000000000..f601ca2ae
--- /dev/null
+++ b/tests/ui/parser/suggest-semicolon-before-array.rs
@@ -0,0 +1,11 @@
+// run-rustfix
+#![allow(dead_code)]
+
+fn foo() {}
+
+fn bar() -> [u8; 2] {
+    foo()
+    [1, 3] //~ ERROR expected `;`, found `[`
+}
+
+fn main() {}
diff --git a/tests/ui/parser/suggest-semicolon-before-array.stderr b/tests/ui/parser/suggest-semicolon-before-array.stderr
new file mode 100644
index 000000000..8a33321fb
--- /dev/null
+++ b/tests/ui/parser/suggest-semicolon-before-array.stderr
@@ -0,0 +1,13 @@
+error: expected `;`, found `[`
+  --> $DIR/suggest-semicolon-before-array.rs:8:5
+   |
+LL |     [1, 3]
+   |     ^
+   |
+help: consider adding `;` here
+   |
+LL |     foo();
+   |          +
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/trailing-carriage-return-in-string.rs b/tests/ui/parser/trailing-carriage-return-in-string.rs
new file mode 100644
index 000000000..5d3c31944
--- /dev/null
+++ b/tests/ui/parser/trailing-carriage-return-in-string.rs
@@ -0,0 +1,14 @@
+// Issue #11669
+
+// ignore-tidy-cr
+
+fn main() {
+    // \r\n
+    let ok = "This is \
+ a test";
+    // \r only
+    let bad = "This is \
 a test";
+    //~^ ERROR unknown character escape: `\r`
+    //~| HELP this is an isolated carriage return
+
+}
diff --git a/tests/ui/parser/trailing-carriage-return-in-string.stderr b/tests/ui/parser/trailing-carriage-return-in-string.stderr
new file mode 100644
index 000000000..8a44e0270
--- /dev/null
+++ b/tests/ui/parser/trailing-carriage-return-in-string.stderr
@@ -0,0 +1,10 @@
+error: unknown character escape: `\r`
+  --> $DIR/trailing-carriage-return-in-string.rs:10:25
+   |
+LL |     let bad = "This is \
 a test";
+   |                         ^ unknown character escape
+   |
+   = help: this is an isolated carriage return; consider checking your editor and version control settings
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/trailing-plus-in-bounds.rs b/tests/ui/parser/trailing-plus-in-bounds.rs
new file mode 100644
index 000000000..400649bcf
--- /dev/null
+++ b/tests/ui/parser/trailing-plus-in-bounds.rs
@@ -0,0 +1,9 @@
+// check-pass
+
+#![allow(bare_trait_objects)]
+
+use std::fmt::Debug;
+
+fn main() {
+    let x: Box<Debug+> = Box::new(3) as Box<Debug+>; // Trailing `+` is OK
+}
diff --git a/tests/ui/parser/trailing-question-in-macro-type.rs b/tests/ui/parser/trailing-question-in-macro-type.rs
new file mode 100644
index 000000000..e2a681ddd
--- /dev/null
+++ b/tests/ui/parser/trailing-question-in-macro-type.rs
@@ -0,0 +1,14 @@
+macro_rules! fn_expr {
+    ($return_type:ty : $body:expr) => {
+        (|| -> $return_type { $body })()
+    };
+    ($body:expr) => {
+        (|| $body)()
+    };
+}
+
+
+fn main() {
+    fn_expr!{ o?.when(|&i| i > 0)?.when(|&i| i%2 == 0) };
+    //~^ ERROR cannot find value `o` in this scope
+}
diff --git a/tests/ui/parser/trailing-question-in-macro-type.stderr b/tests/ui/parser/trailing-question-in-macro-type.stderr
new file mode 100644
index 000000000..c096ae04f
--- /dev/null
+++ b/tests/ui/parser/trailing-question-in-macro-type.stderr
@@ -0,0 +1,9 @@
+error[E0425]: cannot find value `o` in this scope
+  --> $DIR/trailing-question-in-macro-type.rs:12:15
+   |
+LL |     fn_expr!{ o?.when(|&i| i > 0)?.when(|&i| i%2 == 0) };
+   |               ^ not found in this scope
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0425`.
diff --git a/tests/ui/parser/trailing-question-in-type.fixed b/tests/ui/parser/trailing-question-in-type.fixed
new file mode 100644
index 000000000..6ea24484e
--- /dev/null
+++ b/tests/ui/parser/trailing-question-in-type.fixed
@@ -0,0 +1,10 @@
+// run-rustfix
+
+fn foo() -> Option<i32> { //~ ERROR invalid `?` in type
+    let x: Option<i32> = Some(1); //~ ERROR invalid `?` in type
+    x
+}
+
+fn main() {
+    let _: Option<i32> = foo();
+}
diff --git a/tests/ui/parser/trailing-question-in-type.rs b/tests/ui/parser/trailing-question-in-type.rs
new file mode 100644
index 000000000..b1c508365
--- /dev/null
+++ b/tests/ui/parser/trailing-question-in-type.rs
@@ -0,0 +1,10 @@
+// run-rustfix
+
+fn foo() -> i32? { //~ ERROR invalid `?` in type
+    let x: i32? = Some(1); //~ ERROR invalid `?` in type
+    x
+}
+
+fn main() {
+    let _: Option<i32> = foo();
+}
diff --git a/tests/ui/parser/trailing-question-in-type.stderr b/tests/ui/parser/trailing-question-in-type.stderr
new file mode 100644
index 000000000..a3cd419c0
--- /dev/null
+++ b/tests/ui/parser/trailing-question-in-type.stderr
@@ -0,0 +1,24 @@
+error: invalid `?` in type
+  --> $DIR/trailing-question-in-type.rs:3:16
+   |
+LL | fn foo() -> i32? {
+   |                ^ `?` is only allowed on expressions, not types
+   |
+help: if you meant to express that the type might not contain a value, use the `Option` wrapper type
+   |
+LL | fn foo() -> Option<i32> {
+   |             +++++++   ~
+
+error: invalid `?` in type
+  --> $DIR/trailing-question-in-type.rs:4:15
+   |
+LL |     let x: i32? = Some(1);
+   |               ^ `?` is only allowed on expressions, not types
+   |
+help: if you meant to express that the type might not contain a value, use the `Option` wrapper type
+   |
+LL |     let x: Option<i32> = Some(1);
+   |            +++++++   ~
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/trait-bounds-not-on-impl.rs b/tests/ui/parser/trait-bounds-not-on-impl.rs
new file mode 100644
index 000000000..02563847e
--- /dev/null
+++ b/tests/ui/parser/trait-bounds-not-on-impl.rs
@@ -0,0 +1,7 @@
+trait Foo {}
+
+struct Bar;
+
+impl Foo + Owned for Bar {} //~ ERROR expected a trait, found type
+
+fn main() { }
diff --git a/tests/ui/parser/trait-bounds-not-on-impl.stderr b/tests/ui/parser/trait-bounds-not-on-impl.stderr
new file mode 100644
index 000000000..8d2d5e3d7
--- /dev/null
+++ b/tests/ui/parser/trait-bounds-not-on-impl.stderr
@@ -0,0 +1,8 @@
+error: expected a trait, found type
+  --> $DIR/trait-bounds-not-on-impl.rs:5:6
+   |
+LL | impl Foo + Owned for Bar {}
+   |      ^^^^^^^^^^^
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/trait-item-with-defaultness-fail-semantic.rs b/tests/ui/parser/trait-item-with-defaultness-fail-semantic.rs
new file mode 100644
index 000000000..f2d97b7ba
--- /dev/null
+++ b/tests/ui/parser/trait-item-with-defaultness-fail-semantic.rs
@@ -0,0 +1,12 @@
+#![feature(specialization)] //~ WARN the feature `specialization` is incomplete
+
+fn main() {}
+
+trait X {
+    default const A: u8; //~ ERROR `default` is only allowed on items in trait impls
+    default const B: u8 = 0;  //~ ERROR `default` is only allowed on items in trait impls
+    default type D; //~ ERROR `default` is only allowed on items in trait impls
+    default type C: Ord; //~ ERROR `default` is only allowed on items in trait impls
+    default fn f1(); //~ ERROR `default` is only allowed on items in trait impls
+    default fn f2() {} //~ ERROR `default` is only allowed on items in trait impls
+}
diff --git a/tests/ui/parser/trait-item-with-defaultness-fail-semantic.stderr b/tests/ui/parser/trait-item-with-defaultness-fail-semantic.stderr
new file mode 100644
index 000000000..be858cd65
--- /dev/null
+++ b/tests/ui/parser/trait-item-with-defaultness-fail-semantic.stderr
@@ -0,0 +1,60 @@
+error: `default` is only allowed on items in trait impls
+  --> $DIR/trait-item-with-defaultness-fail-semantic.rs:6:5
+   |
+LL |     default const A: u8;
+   |     -------^^^^^^^^^^^^^
+   |     |
+   |     `default` because of this
+
+error: `default` is only allowed on items in trait impls
+  --> $DIR/trait-item-with-defaultness-fail-semantic.rs:7:5
+   |
+LL |     default const B: u8 = 0;
+   |     -------^^^^^^^^^^^^^^^^^
+   |     |
+   |     `default` because of this
+
+error: `default` is only allowed on items in trait impls
+  --> $DIR/trait-item-with-defaultness-fail-semantic.rs:8:5
+   |
+LL |     default type D;
+   |     -------^^^^^^^^
+   |     |
+   |     `default` because of this
+
+error: `default` is only allowed on items in trait impls
+  --> $DIR/trait-item-with-defaultness-fail-semantic.rs:9:5
+   |
+LL |     default type C: Ord;
+   |     -------^^^^^^^^^^^^^
+   |     |
+   |     `default` because of this
+
+error: `default` is only allowed on items in trait impls
+  --> $DIR/trait-item-with-defaultness-fail-semantic.rs:10:5
+   |
+LL |     default fn f1();
+   |     -------^^^^^^^^^
+   |     |
+   |     `default` because of this
+
+error: `default` is only allowed on items in trait impls
+  --> $DIR/trait-item-with-defaultness-fail-semantic.rs:11:5
+   |
+LL |     default fn f2() {}
+   |     -------^^^^^^^^
+   |     |
+   |     `default` because of this
+
+warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes
+  --> $DIR/trait-item-with-defaultness-fail-semantic.rs:1:12
+   |
+LL | #![feature(specialization)]
+   |            ^^^^^^^^^^^^^^
+   |
+   = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
+   = help: consider using `min_specialization` instead, which is more stable and complete
+   = note: `#[warn(incomplete_features)]` on by default
+
+error: aborting due to 6 previous errors; 1 warning emitted
+
diff --git a/tests/ui/parser/trait-item-with-defaultness-pass.rs b/tests/ui/parser/trait-item-with-defaultness-pass.rs
new file mode 100644
index 000000000..a6318bd99
--- /dev/null
+++ b/tests/ui/parser/trait-item-with-defaultness-pass.rs
@@ -0,0 +1,13 @@
+// check-pass
+
+fn main() {}
+
+#[cfg(FALSE)]
+trait X {
+    default const A: u8;
+    default const B: u8 = 0;
+    default type D;
+    default type C: Ord;
+    default fn f1();
+    default fn f2() {}
+}
diff --git a/tests/ui/parser/trait-object-bad-parens.rs b/tests/ui/parser/trait-object-bad-parens.rs
new file mode 100644
index 000000000..8e267c744
--- /dev/null
+++ b/tests/ui/parser/trait-object-bad-parens.rs
@@ -0,0 +1,16 @@
+#![feature(auto_traits)]
+#![feature(negative_impls)]
+#![allow(bare_trait_objects)]
+
+auto trait Auto {}
+
+fn main() {
+    let _: Box<((Auto)) + Auto>;
+    //~^ ERROR expected a path on the left-hand side of `+`, not `((Auto))`
+    let _: Box<(Auto + Auto) + Auto>;
+    //~^ ERROR expected a path on the left-hand side of `+`, not `(Auto + Auto)`
+    let _: Box<(Auto +) + Auto>;
+    //~^ ERROR expected a path on the left-hand side of `+`, not `(Auto)`
+    let _: Box<(dyn Auto) + Auto>;
+    //~^ ERROR expected a path on the left-hand side of `+`, not `(dyn Auto)`
+}
diff --git a/tests/ui/parser/trait-object-bad-parens.stderr b/tests/ui/parser/trait-object-bad-parens.stderr
new file mode 100644
index 000000000..74e484eeb
--- /dev/null
+++ b/tests/ui/parser/trait-object-bad-parens.stderr
@@ -0,0 +1,27 @@
+error[E0178]: expected a path on the left-hand side of `+`, not `((Auto))`
+  --> $DIR/trait-object-bad-parens.rs:8:16
+   |
+LL |     let _: Box<((Auto)) + Auto>;
+   |                ^^^^^^^^^^^^^^^ expected a path
+
+error[E0178]: expected a path on the left-hand side of `+`, not `(Auto + Auto)`
+  --> $DIR/trait-object-bad-parens.rs:10:16
+   |
+LL |     let _: Box<(Auto + Auto) + Auto>;
+   |                ^^^^^^^^^^^^^^^^^^^^ expected a path
+
+error[E0178]: expected a path on the left-hand side of `+`, not `(Auto)`
+  --> $DIR/trait-object-bad-parens.rs:12:16
+   |
+LL |     let _: Box<(Auto +) + Auto>;
+   |                ^^^^^^^^^^^^^^^ expected a path
+
+error[E0178]: expected a path on the left-hand side of `+`, not `(dyn Auto)`
+  --> $DIR/trait-object-bad-parens.rs:14:16
+   |
+LL |     let _: Box<(dyn Auto) + Auto>;
+   |                ^^^^^^^^^^^^^^^^^ expected a path
+
+error: aborting due to 4 previous errors
+
+For more information about this error, try `rustc --explain E0178`.
diff --git a/tests/ui/parser/trait-object-delimiters.rs b/tests/ui/parser/trait-object-delimiters.rs
new file mode 100644
index 000000000..cc04ac052
--- /dev/null
+++ b/tests/ui/parser/trait-object-delimiters.rs
@@ -0,0 +1,17 @@
+// edition:2018
+
+fn foo1(_: &dyn Drop + AsRef<str>) {} //~ ERROR ambiguous `+` in a type
+//~^ ERROR only auto traits can be used as additional traits in a trait object
+
+fn foo2(_: &dyn (Drop + AsRef<str>)) {} //~ ERROR incorrect braces around trait bounds
+
+fn foo3(_: &dyn {Drop + AsRef<str>}) {} //~ ERROR expected parameter name, found `{`
+//~^ ERROR expected one of `!`, `(`, `)`, `*`, `,`, `?`, `for`, `~`, lifetime, or path, found `{`
+//~| ERROR at least one trait is required for an object type
+
+fn foo4(_: &dyn <Drop + AsRef<str>>) {} //~ ERROR expected identifier, found `<`
+
+fn foo5(_: &(dyn Drop + dyn AsRef<str>)) {} //~ ERROR invalid `dyn` keyword
+//~^ ERROR only auto traits can be used as additional traits in a trait object
+
+fn main() {}
diff --git a/tests/ui/parser/trait-object-delimiters.stderr b/tests/ui/parser/trait-object-delimiters.stderr
new file mode 100644
index 000000000..99c451545
--- /dev/null
+++ b/tests/ui/parser/trait-object-delimiters.stderr
@@ -0,0 +1,78 @@
+error: ambiguous `+` in a type
+  --> $DIR/trait-object-delimiters.rs:3:13
+   |
+LL | fn foo1(_: &dyn Drop + AsRef<str>) {}
+   |             ^^^^^^^^^^^^^^^^^^^^^ help: use parentheses to disambiguate: `(dyn Drop + AsRef<str>)`
+
+error: incorrect braces around trait bounds
+  --> $DIR/trait-object-delimiters.rs:6:17
+   |
+LL | fn foo2(_: &dyn (Drop + AsRef<str>)) {}
+   |                 ^                 ^
+   |
+help: remove the parentheses
+   |
+LL - fn foo2(_: &dyn (Drop + AsRef<str>)) {}
+LL + fn foo2(_: &dyn Drop + AsRef<str>) {}
+   |
+
+error: expected parameter name, found `{`
+  --> $DIR/trait-object-delimiters.rs:8:17
+   |
+LL | fn foo3(_: &dyn {Drop + AsRef<str>}) {}
+   |                 ^ expected parameter name
+
+error: expected one of `!`, `(`, `)`, `*`, `,`, `?`, `for`, `~`, lifetime, or path, found `{`
+  --> $DIR/trait-object-delimiters.rs:8:17
+   |
+LL | fn foo3(_: &dyn {Drop + AsRef<str>}) {}
+   |                -^ expected one of 10 possible tokens
+   |                |
+   |                help: missing `,`
+
+error: expected identifier, found `<`
+  --> $DIR/trait-object-delimiters.rs:12:17
+   |
+LL | fn foo4(_: &dyn <Drop + AsRef<str>>) {}
+   |                 ^ expected identifier
+
+error: invalid `dyn` keyword
+  --> $DIR/trait-object-delimiters.rs:14:25
+   |
+LL | fn foo5(_: &(dyn Drop + dyn AsRef<str>)) {}
+   |                         ^^^ help: remove this keyword
+   |
+   = help: `dyn` is only needed at the start of a trait `+`-separated list
+
+error[E0225]: only auto traits can be used as additional traits in a trait object
+  --> $DIR/trait-object-delimiters.rs:3:24
+   |
+LL | fn foo1(_: &dyn Drop + AsRef<str>) {}
+   |                 ----   ^^^^^^^^^^ additional non-auto trait
+   |                 |
+   |                 first non-auto trait
+   |
+   = help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: Drop + AsRef<str> {}`
+   = note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>
+
+error[E0224]: at least one trait is required for an object type
+  --> $DIR/trait-object-delimiters.rs:8:13
+   |
+LL | fn foo3(_: &dyn {Drop + AsRef<str>}) {}
+   |             ^^^
+
+error[E0225]: only auto traits can be used as additional traits in a trait object
+  --> $DIR/trait-object-delimiters.rs:14:29
+   |
+LL | fn foo5(_: &(dyn Drop + dyn AsRef<str>)) {}
+   |                  ----       ^^^^^^^^^^ additional non-auto trait
+   |                  |
+   |                  first non-auto trait
+   |
+   = help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: Drop + AsRef<str> {}`
+   = note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>
+
+error: aborting due to 9 previous errors
+
+Some errors have detailed explanations: E0224, E0225.
+For more information about an error, try `rustc --explain E0224`.
diff --git a/tests/ui/parser/trait-object-lifetime-parens.rs b/tests/ui/parser/trait-object-lifetime-parens.rs
new file mode 100644
index 000000000..f44ebe5ba
--- /dev/null
+++ b/tests/ui/parser/trait-object-lifetime-parens.rs
@@ -0,0 +1,13 @@
+#![allow(bare_trait_objects)]
+
+trait Trait {}
+
+fn f<'a, T: Trait + ('a)>() {} //~ ERROR parenthesized lifetime bounds are not supported
+
+fn check<'a>() {
+    let _: Box<Trait + ('a)>; //~ ERROR parenthesized lifetime bounds are not supported
+    // FIXME: It'd be great if we could add suggestion to the following case.
+    let _: Box<('a) + Trait>; //~ ERROR lifetime in trait object type must be followed by `+`
+}
+
+fn main() {}
diff --git a/tests/ui/parser/trait-object-lifetime-parens.stderr b/tests/ui/parser/trait-object-lifetime-parens.stderr
new file mode 100644
index 000000000..9c7a9662c
--- /dev/null
+++ b/tests/ui/parser/trait-object-lifetime-parens.stderr
@@ -0,0 +1,20 @@
+error: parenthesized lifetime bounds are not supported
+  --> $DIR/trait-object-lifetime-parens.rs:5:21
+   |
+LL | fn f<'a, T: Trait + ('a)>() {}
+   |                     ^^^^ help: remove the parentheses
+
+error: parenthesized lifetime bounds are not supported
+  --> $DIR/trait-object-lifetime-parens.rs:8:24
+   |
+LL |     let _: Box<Trait + ('a)>;
+   |                        ^^^^ help: remove the parentheses
+
+error: lifetime in trait object type must be followed by `+`
+  --> $DIR/trait-object-lifetime-parens.rs:10:17
+   |
+LL |     let _: Box<('a) + Trait>;
+   |                 ^^
+
+error: aborting due to 3 previous errors
+
diff --git a/tests/ui/parser/trait-object-polytrait-priority.rs b/tests/ui/parser/trait-object-polytrait-priority.rs
new file mode 100644
index 000000000..63425f3e2
--- /dev/null
+++ b/tests/ui/parser/trait-object-polytrait-priority.rs
@@ -0,0 +1,10 @@
+#![allow(bare_trait_objects)]
+
+trait Trait<'a> {}
+
+fn main() {
+    let _: &for<'a> Trait<'a> + 'static;
+    //~^ ERROR expected a path on the left-hand side of `+`, not `&for<'a> Trait<'a>`
+    //~| HELP try adding parentheses
+    //~| SUGGESTION &(for<'a> Trait<'a> + 'static)
+}
diff --git a/tests/ui/parser/trait-object-polytrait-priority.stderr b/tests/ui/parser/trait-object-polytrait-priority.stderr
new file mode 100644
index 000000000..a6add6079
--- /dev/null
+++ b/tests/ui/parser/trait-object-polytrait-priority.stderr
@@ -0,0 +1,9 @@
+error[E0178]: expected a path on the left-hand side of `+`, not `&for<'a> Trait<'a>`
+  --> $DIR/trait-object-polytrait-priority.rs:6:12
+   |
+LL |     let _: &for<'a> Trait<'a> + 'static;
+   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try adding parentheses: `&(for<'a> Trait<'a> + 'static)`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0178`.
diff --git a/tests/ui/parser/trait-object-trait-parens.rs b/tests/ui/parser/trait-object-trait-parens.rs
new file mode 100644
index 000000000..438034bc3
--- /dev/null
+++ b/tests/ui/parser/trait-object-trait-parens.rs
@@ -0,0 +1,23 @@
+trait Trait<'a> {}
+
+trait Obj {}
+
+fn f<T: (Copy) + (?Sized) + (for<'a> Trait<'a>)>() {}
+
+fn main() {
+    let _: Box<(Obj) + (?Sized) + (for<'a> Trait<'a>)>;
+    //~^ ERROR `?Trait` is not permitted in trait object types
+    //~| ERROR only auto traits can be used as additional traits
+    //~| WARN trait objects without an explicit `dyn` are deprecated
+    //~| WARN this is accepted in the current edition
+    let _: Box<?Sized + (for<'a> Trait<'a>) + (Obj)>;
+    //~^ ERROR `?Trait` is not permitted in trait object types
+    //~| ERROR only auto traits can be used as additional traits
+    //~| WARN trait objects without an explicit `dyn` are deprecated
+    //~| WARN this is accepted in the current edition
+    let _: Box<for<'a> Trait<'a> + (Obj) + (?Sized)>;
+    //~^ ERROR `?Trait` is not permitted in trait object types
+    //~| ERROR only auto traits can be used as additional traits
+    //~| WARN trait objects without an explicit `dyn` are deprecated
+    //~| WARN this is accepted in the current edition
+}
diff --git a/tests/ui/parser/trait-object-trait-parens.stderr b/tests/ui/parser/trait-object-trait-parens.stderr
new file mode 100644
index 000000000..5e07a3fe6
--- /dev/null
+++ b/tests/ui/parser/trait-object-trait-parens.stderr
@@ -0,0 +1,94 @@
+error: `?Trait` is not permitted in trait object types
+  --> $DIR/trait-object-trait-parens.rs:8:24
+   |
+LL |     let _: Box<(Obj) + (?Sized) + (for<'a> Trait<'a>)>;
+   |                        ^^^^^^^^
+
+error: `?Trait` is not permitted in trait object types
+  --> $DIR/trait-object-trait-parens.rs:13:16
+   |
+LL |     let _: Box<?Sized + (for<'a> Trait<'a>) + (Obj)>;
+   |                ^^^^^^
+
+error: `?Trait` is not permitted in trait object types
+  --> $DIR/trait-object-trait-parens.rs:18:44
+   |
+LL |     let _: Box<for<'a> Trait<'a> + (Obj) + (?Sized)>;
+   |                                            ^^^^^^^^
+
+warning: trait objects without an explicit `dyn` are deprecated
+  --> $DIR/trait-object-trait-parens.rs:8:16
+   |
+LL |     let _: Box<(Obj) + (?Sized) + (for<'a> Trait<'a>)>;
+   |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
+   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
+   = note: `#[warn(bare_trait_objects)]` on by default
+help: use `dyn`
+   |
+LL |     let _: Box<dyn (Obj) + (?Sized) + (for<'a> Trait<'a>)>;
+   |                +++
+
+error[E0225]: only auto traits can be used as additional traits in a trait object
+  --> $DIR/trait-object-trait-parens.rs:8:35
+   |
+LL |     let _: Box<(Obj) + (?Sized) + (for<'a> Trait<'a>)>;
+   |                -----              ^^^^^^^^^^^^^^^^^^^ additional non-auto trait
+   |                |
+   |                first non-auto trait
+   |
+   = help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: Obj + for<'a> Trait<'a> {}`
+   = note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>
+
+warning: trait objects without an explicit `dyn` are deprecated
+  --> $DIR/trait-object-trait-parens.rs:13:16
+   |
+LL |     let _: Box<?Sized + (for<'a> Trait<'a>) + (Obj)>;
+   |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
+   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
+help: use `dyn`
+   |
+LL |     let _: Box<dyn ?Sized + (for<'a> Trait<'a>) + (Obj)>;
+   |                +++
+
+error[E0225]: only auto traits can be used as additional traits in a trait object
+  --> $DIR/trait-object-trait-parens.rs:13:47
+   |
+LL |     let _: Box<?Sized + (for<'a> Trait<'a>) + (Obj)>;
+   |                         -------------------   ^^^^^ additional non-auto trait
+   |                         |
+   |                         first non-auto trait
+   |
+   = help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: for<'a> Trait<'a> + Obj {}`
+   = note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>
+
+warning: trait objects without an explicit `dyn` are deprecated
+  --> $DIR/trait-object-trait-parens.rs:18:16
+   |
+LL |     let _: Box<for<'a> Trait<'a> + (Obj) + (?Sized)>;
+   |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
+   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
+help: use `dyn`
+   |
+LL |     let _: Box<dyn for<'a> Trait<'a> + (Obj) + (?Sized)>;
+   |                +++
+
+error[E0225]: only auto traits can be used as additional traits in a trait object
+  --> $DIR/trait-object-trait-parens.rs:18:36
+   |
+LL |     let _: Box<for<'a> Trait<'a> + (Obj) + (?Sized)>;
+   |                -----------------   ^^^^^ additional non-auto trait
+   |                |
+   |                first non-auto trait
+   |
+   = help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: for<'a> Trait<'a> + Obj {}`
+   = note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>
+
+error: aborting due to 6 previous errors; 3 warnings emitted
+
+For more information about this error, try `rustc --explain E0225`.
diff --git a/tests/ui/parser/trait-plusequal-splitting.rs b/tests/ui/parser/trait-plusequal-splitting.rs
new file mode 100644
index 000000000..6ca677450
--- /dev/null
+++ b/tests/ui/parser/trait-plusequal-splitting.rs
@@ -0,0 +1,8 @@
+// Fixes issue where `+` in generics weren't parsed if they were part of a `+=`.
+
+// check-pass
+
+struct Whitespace<T: Clone + = ()> { t: T }
+struct TokenSplit<T: Clone +=  ()> { t: T }
+
+fn main() {}
diff --git a/tests/ui/parser/trait-pub-assoc-const.rs b/tests/ui/parser/trait-pub-assoc-const.rs
new file mode 100644
index 000000000..219ffa309
--- /dev/null
+++ b/tests/ui/parser/trait-pub-assoc-const.rs
@@ -0,0 +1,6 @@
+trait Foo {
+    pub const Foo: u32;
+    //~^ ERROR unnecessary visibility qualifier
+}
+
+fn main() {}
diff --git a/tests/ui/parser/trait-pub-assoc-const.stderr b/tests/ui/parser/trait-pub-assoc-const.stderr
new file mode 100644
index 000000000..efd09a036
--- /dev/null
+++ b/tests/ui/parser/trait-pub-assoc-const.stderr
@@ -0,0 +1,9 @@
+error[E0449]: unnecessary visibility qualifier
+  --> $DIR/trait-pub-assoc-const.rs:2:5
+   |
+LL |     pub const Foo: u32;
+   |     ^^^ `pub` not permitted here because it's implied
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0449`.
diff --git a/tests/ui/parser/trait-pub-assoc-ty.rs b/tests/ui/parser/trait-pub-assoc-ty.rs
new file mode 100644
index 000000000..a78dfbdcd
--- /dev/null
+++ b/tests/ui/parser/trait-pub-assoc-ty.rs
@@ -0,0 +1,6 @@
+trait Foo {
+    pub type Foo;
+    //~^ ERROR unnecessary visibility qualifier
+}
+
+fn main() {}
diff --git a/tests/ui/parser/trait-pub-assoc-ty.stderr b/tests/ui/parser/trait-pub-assoc-ty.stderr
new file mode 100644
index 000000000..e76373f5c
--- /dev/null
+++ b/tests/ui/parser/trait-pub-assoc-ty.stderr
@@ -0,0 +1,9 @@
+error[E0449]: unnecessary visibility qualifier
+  --> $DIR/trait-pub-assoc-ty.rs:2:5
+   |
+LL |     pub type Foo;
+   |     ^^^ `pub` not permitted here because it's implied
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0449`.
diff --git a/tests/ui/parser/trait-pub-method.rs b/tests/ui/parser/trait-pub-method.rs
new file mode 100644
index 000000000..1f6ee028a
--- /dev/null
+++ b/tests/ui/parser/trait-pub-method.rs
@@ -0,0 +1,6 @@
+trait Foo {
+    pub fn foo();
+    //~^ ERROR unnecessary visibility qualifier
+}
+
+fn main() {}
diff --git a/tests/ui/parser/trait-pub-method.stderr b/tests/ui/parser/trait-pub-method.stderr
new file mode 100644
index 000000000..0e3fe027c
--- /dev/null
+++ b/tests/ui/parser/trait-pub-method.stderr
@@ -0,0 +1,9 @@
+error[E0449]: unnecessary visibility qualifier
+  --> $DIR/trait-pub-method.rs:2:5
+   |
+LL |     pub fn foo();
+   |     ^^^ `pub` not permitted here because it's implied
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0449`.
diff --git a/tests/ui/parser/type-alias-where-fixable.fixed b/tests/ui/parser/type-alias-where-fixable.fixed
new file mode 100644
index 000000000..2f47c0d91
--- /dev/null
+++ b/tests/ui/parser/type-alias-where-fixable.fixed
@@ -0,0 +1,28 @@
+// check-pass
+// run-rustfix
+
+trait Trait {
+    // Fine.
+    type Assoc where u32: Copy;
+    // Fine.
+    type Assoc2 where u32: Copy, i32: Copy;
+}
+
+impl Trait for u32 {
+    // Not fine, suggests moving.
+    type Assoc  = () where u32: Copy;
+    //~^ WARNING where clause not allowed here
+    // Not fine, suggests moving `u32: Copy`
+    type Assoc2  = () where i32: Copy, u32: Copy;
+    //~^ WARNING where clause not allowed here
+}
+
+impl Trait for i32 {
+    // Fine.
+    type Assoc = () where u32: Copy;
+    // Not fine, suggests moving both.
+    type Assoc2  = () where u32: Copy, i32: Copy;
+    //~^ WARNING where clause not allowed here
+}
+
+fn main() {}
diff --git a/tests/ui/parser/type-alias-where-fixable.rs b/tests/ui/parser/type-alias-where-fixable.rs
new file mode 100644
index 000000000..b20aa9398
--- /dev/null
+++ b/tests/ui/parser/type-alias-where-fixable.rs
@@ -0,0 +1,28 @@
+// check-pass
+// run-rustfix
+
+trait Trait {
+    // Fine.
+    type Assoc where u32: Copy;
+    // Fine.
+    type Assoc2 where u32: Copy, i32: Copy;
+}
+
+impl Trait for u32 {
+    // Not fine, suggests moving.
+    type Assoc where u32: Copy = ();
+    //~^ WARNING where clause not allowed here
+    // Not fine, suggests moving `u32: Copy`
+    type Assoc2 where u32: Copy = () where i32: Copy;
+    //~^ WARNING where clause not allowed here
+}
+
+impl Trait for i32 {
+    // Fine.
+    type Assoc = () where u32: Copy;
+    // Not fine, suggests moving both.
+    type Assoc2 where u32: Copy, i32: Copy = ();
+    //~^ WARNING where clause not allowed here
+}
+
+fn main() {}
diff --git a/tests/ui/parser/type-alias-where-fixable.stderr b/tests/ui/parser/type-alias-where-fixable.stderr
new file mode 100644
index 000000000..f0acb388b
--- /dev/null
+++ b/tests/ui/parser/type-alias-where-fixable.stderr
@@ -0,0 +1,42 @@
+warning: where clause not allowed here
+  --> $DIR/type-alias-where-fixable.rs:13:16
+   |
+LL |     type Assoc where u32: Copy = ();
+   |                ^^^^^^^^^^^^^^^
+   |
+   = note: see issue #89122 <https://github.com/rust-lang/rust/issues/89122> for more information
+   = note: `#[warn(deprecated_where_clause_location)]` on by default
+help: move it to the end of the type declaration
+   |
+LL -     type Assoc where u32: Copy = ();
+LL +     type Assoc  = () where u32: Copy;
+   |
+
+warning: where clause not allowed here
+  --> $DIR/type-alias-where-fixable.rs:16:17
+   |
+LL |     type Assoc2 where u32: Copy = () where i32: Copy;
+   |                 ^^^^^^^^^^^^^^^
+   |
+   = note: see issue #89122 <https://github.com/rust-lang/rust/issues/89122> for more information
+help: move it to the end of the type declaration
+   |
+LL -     type Assoc2 where u32: Copy = () where i32: Copy;
+LL +     type Assoc2  = () where i32: Copy, u32: Copy;
+   |
+
+warning: where clause not allowed here
+  --> $DIR/type-alias-where-fixable.rs:24:17
+   |
+LL |     type Assoc2 where u32: Copy, i32: Copy = ();
+   |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: see issue #89122 <https://github.com/rust-lang/rust/issues/89122> for more information
+help: move it to the end of the type declaration
+   |
+LL -     type Assoc2 where u32: Copy, i32: Copy = ();
+LL +     type Assoc2  = () where u32: Copy, i32: Copy;
+   |
+
+warning: 3 warnings emitted
+
diff --git a/tests/ui/parser/type-alias-where.rs b/tests/ui/parser/type-alias-where.rs
new file mode 100644
index 000000000..62e301cb4
--- /dev/null
+++ b/tests/ui/parser/type-alias-where.rs
@@ -0,0 +1,11 @@
+// check-fail
+
+// Fine, but lints as unused
+type Foo where u32: Copy = ();
+// Not fine.
+type Bar = () where u32: Copy;
+//~^ ERROR where clauses are not allowed
+type Baz = () where;
+//~^ ERROR where clauses are not allowed
+
+fn main() {}
diff --git a/tests/ui/parser/type-alias-where.stderr b/tests/ui/parser/type-alias-where.stderr
new file mode 100644
index 000000000..fb8381792
--- /dev/null
+++ b/tests/ui/parser/type-alias-where.stderr
@@ -0,0 +1,18 @@
+error: where clauses are not allowed after the type for type aliases
+  --> $DIR/type-alias-where.rs:6:15
+   |
+LL | type Bar = () where u32: Copy;
+   |               ^^^^^^^^^^^^^^^
+   |
+   = note: see issue #89122 <https://github.com/rust-lang/rust/issues/89122> for more information
+
+error: where clauses are not allowed after the type for type aliases
+  --> $DIR/type-alias-where.rs:8:15
+   |
+LL | type Baz = () where;
+   |               ^^^^^
+   |
+   = note: see issue #89122 <https://github.com/rust-lang/rust/issues/89122> for more information
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/type-parameters-in-field-exprs.rs b/tests/ui/parser/type-parameters-in-field-exprs.rs
new file mode 100644
index 000000000..4cd77ebbd
--- /dev/null
+++ b/tests/ui/parser/type-parameters-in-field-exprs.rs
@@ -0,0 +1,17 @@
+struct Foo {
+    x: isize,
+    y: isize,
+}
+
+fn main() {
+    let f = Foo {
+        x: 1,
+        y: 2,
+    };
+    f.x::<isize>;
+    //~^ ERROR field expressions cannot have generic arguments
+    f.x::<>;
+    //~^ ERROR field expressions cannot have generic arguments
+    f.x::();
+    //~^ ERROR field expressions cannot have generic arguments
+}
diff --git a/tests/ui/parser/type-parameters-in-field-exprs.stderr b/tests/ui/parser/type-parameters-in-field-exprs.stderr
new file mode 100644
index 000000000..ce7364d35
--- /dev/null
+++ b/tests/ui/parser/type-parameters-in-field-exprs.stderr
@@ -0,0 +1,20 @@
+error: field expressions cannot have generic arguments
+  --> $DIR/type-parameters-in-field-exprs.rs:11:10
+   |
+LL |     f.x::<isize>;
+   |          ^^^^^^^
+
+error: field expressions cannot have generic arguments
+  --> $DIR/type-parameters-in-field-exprs.rs:13:10
+   |
+LL |     f.x::<>;
+   |          ^^
+
+error: field expressions cannot have generic arguments
+  --> $DIR/type-parameters-in-field-exprs.rs:15:7
+   |
+LL |     f.x::();
+   |       ^^^^^
+
+error: aborting due to 3 previous errors
+
diff --git a/tests/ui/parser/unbalanced-doublequote.rs b/tests/ui/parser/unbalanced-doublequote.rs
new file mode 100644
index 000000000..f21316205
--- /dev/null
+++ b/tests/ui/parser/unbalanced-doublequote.rs
@@ -0,0 +1,6 @@
+// error-pattern: unterminated double quote string
+
+
+fn main() {
+    "
+}
diff --git a/tests/ui/parser/unbalanced-doublequote.stderr b/tests/ui/parser/unbalanced-doublequote.stderr
new file mode 100644
index 000000000..94b300a7b
--- /dev/null
+++ b/tests/ui/parser/unbalanced-doublequote.stderr
@@ -0,0 +1,10 @@
+error[E0765]: unterminated double quote string
+  --> $DIR/unbalanced-doublequote.rs:5:5
+   |
+LL | /     "
+LL | | }
+   | |__^
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0765`.
diff --git a/tests/ui/parser/unclosed-braces.rs b/tests/ui/parser/unclosed-braces.rs
new file mode 100644
index 000000000..ed94fff38
--- /dev/null
+++ b/tests/ui/parser/unclosed-braces.rs
@@ -0,0 +1,22 @@
+struct S {
+    x: [usize; 3],
+}
+
+fn foo() {
+    {
+        {
+            println!("hi");
+        }
+    }
+}
+
+fn main() {
+//~^ NOTE unclosed delimiter
+    {
+        {
+        //~^ NOTE this delimiter might not be properly closed...
+            foo();
+    }
+    //~^ NOTE ...as it matches this but it has different indentation
+}
+//~ ERROR this file contains an unclosed delimiter
diff --git a/tests/ui/parser/unclosed-braces.stderr b/tests/ui/parser/unclosed-braces.stderr
new file mode 100644
index 000000000..cbc5f8de4
--- /dev/null
+++ b/tests/ui/parser/unclosed-braces.stderr
@@ -0,0 +1,17 @@
+error: this file contains an unclosed delimiter
+  --> $DIR/unclosed-braces.rs:22:52
+   |
+LL | fn main() {
+   |           - unclosed delimiter
+...
+LL |         {
+   |         - this delimiter might not be properly closed...
+...
+LL |     }
+   |     - ...as it matches this but it has different indentation
+...
+LL |
+   |                                                    ^
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/unclosed-delimiter-in-dep.rs b/tests/ui/parser/unclosed-delimiter-in-dep.rs
new file mode 100644
index 000000000..6db1b66e9
--- /dev/null
+++ b/tests/ui/parser/unclosed-delimiter-in-dep.rs
@@ -0,0 +1,6 @@
+mod unclosed_delim_mod;
+
+fn main() {
+    let _: usize = unclosed_delim_mod::new();
+    //~^ ERROR mismatched types
+}
diff --git a/tests/ui/parser/unclosed-delimiter-in-dep.stderr b/tests/ui/parser/unclosed-delimiter-in-dep.stderr
new file mode 100644
index 000000000..1366ef1bb
--- /dev/null
+++ b/tests/ui/parser/unclosed-delimiter-in-dep.stderr
@@ -0,0 +1,25 @@
+error: mismatched closing delimiter: `}`
+  --> $DIR/unclosed_delim_mod.rs:5:7
+   |
+LL | pub fn new() -> Result<Value, ()> {
+   |                                   - closing delimiter possibly meant for this
+LL |     Ok(Value {
+   |       ^ unclosed delimiter
+LL |     }
+LL | }
+   | ^ mismatched closing delimiter
+
+error[E0308]: mismatched types
+  --> $DIR/unclosed-delimiter-in-dep.rs:4:20
+   |
+LL |     let _: usize = unclosed_delim_mod::new();
+   |            -----   ^^^^^^^^^^^^^^^^^^^^^^^^^ expected `usize`, found enum `Result`
+   |            |
+   |            expected due to this
+   |
+   = note: expected type `usize`
+              found enum `Result<Value, ()>`
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/parser/unclosed_delim_mod.rs b/tests/ui/parser/unclosed_delim_mod.rs
new file mode 100644
index 000000000..d977d2c03
--- /dev/null
+++ b/tests/ui/parser/unclosed_delim_mod.rs
@@ -0,0 +1,8 @@
+fn main() {}
+
+pub struct Value {}
+pub fn new() -> Result<Value, ()> {
+    Ok(Value {
+    }
+}
+//~^ ERROR mismatched closing delimiter
diff --git a/tests/ui/parser/unclosed_delim_mod.stderr b/tests/ui/parser/unclosed_delim_mod.stderr
new file mode 100644
index 000000000..a46d020b9
--- /dev/null
+++ b/tests/ui/parser/unclosed_delim_mod.stderr
@@ -0,0 +1,13 @@
+error: mismatched closing delimiter: `}`
+  --> $DIR/unclosed_delim_mod.rs:5:7
+   |
+LL | pub fn new() -> Result<Value, ()> {
+   |                                   - closing delimiter possibly meant for this
+LL |     Ok(Value {
+   |       ^ unclosed delimiter
+LL |     }
+LL | }
+   | ^ mismatched closing delimiter
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/underscore-suffix-for-float.rs b/tests/ui/parser/underscore-suffix-for-float.rs
new file mode 100644
index 000000000..c9b7eced0
--- /dev/null
+++ b/tests/ui/parser/underscore-suffix-for-float.rs
@@ -0,0 +1,4 @@
+fn main() {
+    let a = 42._; //~ ERROR expected identifier, found reserved identifier `_`
+                  //~| ERROR `{integer}` is a primitive type and therefore doesn't have fields
+}
diff --git a/tests/ui/parser/underscore-suffix-for-float.stderr b/tests/ui/parser/underscore-suffix-for-float.stderr
new file mode 100644
index 000000000..a5f3b6551
--- /dev/null
+++ b/tests/ui/parser/underscore-suffix-for-float.stderr
@@ -0,0 +1,15 @@
+error: expected identifier, found reserved identifier `_`
+  --> $DIR/underscore-suffix-for-float.rs:2:16
+   |
+LL |     let a = 42._;
+   |                ^ expected identifier, found reserved identifier
+
+error[E0610]: `{integer}` is a primitive type and therefore doesn't have fields
+  --> $DIR/underscore-suffix-for-float.rs:2:16
+   |
+LL |     let a = 42._;
+   |                ^
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0610`.
diff --git a/tests/ui/parser/underscore-suffix-for-string.rs b/tests/ui/parser/underscore-suffix-for-string.rs
new file mode 100644
index 000000000..bd260752e
--- /dev/null
+++ b/tests/ui/parser/underscore-suffix-for-string.rs
@@ -0,0 +1,17 @@
+macro_rules! sink {
+    ($tt:tt) => {()}
+}
+
+fn main() {
+    let _ = "Foo"_;
+    //~^ ERROR underscore literal suffix is not allowed
+
+    // This is ok, because `__` is a valid identifier and the macro consumes it
+    // before proper parsing happens.
+    let _ = sink!("Foo"__);
+
+    // This is not ok, even as an input to a macro, because the `_` suffix is
+    // never allowed.
+    sink!("Foo"_);
+    //~^ ERROR underscore literal suffix is not allowed
+}
diff --git a/tests/ui/parser/underscore-suffix-for-string.stderr b/tests/ui/parser/underscore-suffix-for-string.stderr
new file mode 100644
index 000000000..2fe2c130e
--- /dev/null
+++ b/tests/ui/parser/underscore-suffix-for-string.stderr
@@ -0,0 +1,14 @@
+error: underscore literal suffix is not allowed
+  --> $DIR/underscore-suffix-for-string.rs:6:18
+   |
+LL |     let _ = "Foo"_;
+   |                  ^
+
+error: underscore literal suffix is not allowed
+  --> $DIR/underscore-suffix-for-string.rs:15:16
+   |
+LL |     sink!("Foo"_);
+   |                ^
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/underscore_item_not_const.rs b/tests/ui/parser/underscore_item_not_const.rs
new file mode 100644
index 000000000..c01ac4752
--- /dev/null
+++ b/tests/ui/parser/underscore_item_not_const.rs
@@ -0,0 +1,16 @@
+// Test that various non-const items do not syntactically permit `_` as a name.
+
+static _: () = (); //~ ERROR expected identifier, found reserved identifier `_`
+struct _(); //~ ERROR expected identifier, found reserved identifier `_`
+enum _ {} //~ ERROR expected identifier, found reserved identifier `_`
+fn _() {} //~ ERROR expected identifier, found reserved identifier `_`
+mod _ {} //~ ERROR expected identifier, found reserved identifier `_`
+type _ = (); //~ ERROR expected identifier, found reserved identifier `_`
+use _; //~ ERROR expected identifier, found reserved identifier `_`
+use _ as g; //~ ERROR expected identifier, found reserved identifier `_`
+trait _ {} //~ ERROR expected identifier, found reserved identifier `_`
+trait _ = Copy; //~ ERROR expected identifier, found reserved identifier `_`
+macro_rules! _ { () => {} } //~ ERROR expected identifier, found reserved identifier `_`
+union _ { f: u8 } //~ ERROR expected one of `!` or `::`, found reserved identifier `_`
+
+fn main() {}
diff --git a/tests/ui/parser/underscore_item_not_const.stderr b/tests/ui/parser/underscore_item_not_const.stderr
new file mode 100644
index 000000000..0bc7642dd
--- /dev/null
+++ b/tests/ui/parser/underscore_item_not_const.stderr
@@ -0,0 +1,74 @@
+error: expected identifier, found reserved identifier `_`
+  --> $DIR/underscore_item_not_const.rs:3:8
+   |
+LL | static _: () = ();
+   |        ^ expected identifier, found reserved identifier
+
+error: expected identifier, found reserved identifier `_`
+  --> $DIR/underscore_item_not_const.rs:4:8
+   |
+LL | struct _();
+   |        ^ expected identifier, found reserved identifier
+
+error: expected identifier, found reserved identifier `_`
+  --> $DIR/underscore_item_not_const.rs:5:6
+   |
+LL | enum _ {}
+   |      ^ expected identifier, found reserved identifier
+
+error: expected identifier, found reserved identifier `_`
+  --> $DIR/underscore_item_not_const.rs:6:4
+   |
+LL | fn _() {}
+   |    ^ expected identifier, found reserved identifier
+
+error: expected identifier, found reserved identifier `_`
+  --> $DIR/underscore_item_not_const.rs:7:5
+   |
+LL | mod _ {}
+   |     ^ expected identifier, found reserved identifier
+
+error: expected identifier, found reserved identifier `_`
+  --> $DIR/underscore_item_not_const.rs:8:6
+   |
+LL | type _ = ();
+   |      ^ expected identifier, found reserved identifier
+
+error: expected identifier, found reserved identifier `_`
+  --> $DIR/underscore_item_not_const.rs:9:5
+   |
+LL | use _;
+   |     ^ expected identifier, found reserved identifier
+
+error: expected identifier, found reserved identifier `_`
+  --> $DIR/underscore_item_not_const.rs:10:5
+   |
+LL | use _ as g;
+   |     ^ expected identifier, found reserved identifier
+
+error: expected identifier, found reserved identifier `_`
+  --> $DIR/underscore_item_not_const.rs:11:7
+   |
+LL | trait _ {}
+   |       ^ expected identifier, found reserved identifier
+
+error: expected identifier, found reserved identifier `_`
+  --> $DIR/underscore_item_not_const.rs:12:7
+   |
+LL | trait _ = Copy;
+   |       ^ expected identifier, found reserved identifier
+
+error: expected identifier, found reserved identifier `_`
+  --> $DIR/underscore_item_not_const.rs:13:14
+   |
+LL | macro_rules! _ { () => {} }
+   |              ^ expected identifier, found reserved identifier
+
+error: expected one of `!` or `::`, found reserved identifier `_`
+  --> $DIR/underscore_item_not_const.rs:14:7
+   |
+LL | union _ { f: u8 }
+   |       ^ expected one of `!` or `::`
+
+error: aborting due to 12 previous errors
+
diff --git a/tests/ui/parser/unicode-character-literal.fixed b/tests/ui/parser/unicode-character-literal.fixed
new file mode 100644
index 000000000..26ef5ffa1
--- /dev/null
+++ b/tests/ui/parser/unicode-character-literal.fixed
@@ -0,0 +1,21 @@
+// Regression test for #88684: Improve diagnostics for combining marks
+// in character literals.
+
+// run-rustfix
+
+fn main() {
+    let _spade = "♠️";
+    //~^ ERROR: character literal may only contain one codepoint
+    //~| NOTE: this `♠` is followed by the combining mark `\u{fe0f}`
+    //~| HELP: if you meant to write a `str` literal, use double quotes
+
+    let _s = "ṩ̂̊";
+    //~^ ERROR: character literal may only contain one codepoint
+    //~| NOTE: this `s` is followed by the combining marks `\u{323}\u{307}\u{302}\u{30a}`
+    //~| HELP: if you meant to write a `str` literal, use double quotes
+
+    let _a = 'Å';
+    //~^ ERROR: character literal may only contain one codepoint
+    //~| NOTE: this `A` is followed by the combining mark `\u{30a}`
+    //~| HELP: consider using the normalized form `\u{c5}` of this character
+}
diff --git a/tests/ui/parser/unicode-character-literal.rs b/tests/ui/parser/unicode-character-literal.rs
new file mode 100644
index 000000000..d331522c0
--- /dev/null
+++ b/tests/ui/parser/unicode-character-literal.rs
@@ -0,0 +1,21 @@
+// Regression test for #88684: Improve diagnostics for combining marks
+// in character literals.
+
+// run-rustfix
+
+fn main() {
+    let _spade = '♠️';
+    //~^ ERROR: character literal may only contain one codepoint
+    //~| NOTE: this `♠` is followed by the combining mark `\u{fe0f}`
+    //~| HELP: if you meant to write a `str` literal, use double quotes
+
+    let _s = 'ṩ̂̊';
+    //~^ ERROR: character literal may only contain one codepoint
+    //~| NOTE: this `s` is followed by the combining marks `\u{323}\u{307}\u{302}\u{30a}`
+    //~| HELP: if you meant to write a `str` literal, use double quotes
+
+    let _a = 'Å';
+    //~^ ERROR: character literal may only contain one codepoint
+    //~| NOTE: this `A` is followed by the combining mark `\u{30a}`
+    //~| HELP: consider using the normalized form `\u{c5}` of this character
+}
diff --git a/tests/ui/parser/unicode-character-literal.stderr b/tests/ui/parser/unicode-character-literal.stderr
new file mode 100644
index 000000000..5cd3bd0fe
--- /dev/null
+++ b/tests/ui/parser/unicode-character-literal.stderr
@@ -0,0 +1,48 @@
+error: character literal may only contain one codepoint
+  --> $DIR/unicode-character-literal.rs:7:18
+   |
+LL |     let _spade = '♠️';
+   |                  ^^^
+   |
+note: this `♠` is followed by the combining mark `\u{fe0f}`
+  --> $DIR/unicode-character-literal.rs:7:19
+   |
+LL |     let _spade = '♠️';
+   |                   ^
+help: if you meant to write a `str` literal, use double quotes
+   |
+LL |     let _spade = "♠️";
+   |                  ~~~
+
+error: character literal may only contain one codepoint
+  --> $DIR/unicode-character-literal.rs:12:14
+   |
+LL |     let _s = 'ṩ̂̊';
+   |              ^^^
+   |
+note: this `s` is followed by the combining marks `\u{323}\u{307}\u{302}\u{30a}`
+  --> $DIR/unicode-character-literal.rs:12:15
+   |
+LL |     let _s = 'ṩ̂̊';
+   |               ^
+help: if you meant to write a `str` literal, use double quotes
+   |
+LL |     let _s = "ṩ̂̊";
+   |              ~~~
+
+error: character literal may only contain one codepoint
+  --> $DIR/unicode-character-literal.rs:17:14
+   |
+LL |     let _a = 'Å';
+   |              ^-^
+   |               |
+   |               help: consider using the normalized form `\u{c5}` of this character: `Å`
+   |
+note: this `A` is followed by the combining mark `\u{30a}`
+  --> $DIR/unicode-character-literal.rs:17:15
+   |
+LL |     let _a = 'Å';
+   |               ^
+
+error: aborting due to 3 previous errors
+
diff --git a/tests/ui/parser/unicode-chars.rs b/tests/ui/parser/unicode-chars.rs
new file mode 100644
index 000000000..cd25c7566
--- /dev/null
+++ b/tests/ui/parser/unicode-chars.rs
@@ -0,0 +1,12 @@
+fn main() {
+    let y = 0;
+    //~^ ERROR unknown start of token: \u{37e}
+    //~^^ HELP Unicode character ';' (Greek Question Mark) looks like ';' (Semicolon), but it is not
+        let x = 0;
+    //~^ ERROR unknown start of token: \u{a0}
+    //~^^ NOTE character appears 3 more times
+    //~^^^ HELP Unicode character ' ' (No-Break Space) looks like ' ' (Space), but it is not
+    let _ = 1 ⩵ 2;
+    //~^ ERROR unknown start of token
+    //~^^ HELP Unicode character '⩵' (Two Consecutive Equals Signs) looks like '==' (Double Equals Sign), but it is not
+}
diff --git a/tests/ui/parser/unicode-chars.stderr b/tests/ui/parser/unicode-chars.stderr
new file mode 100644
index 000000000..086de5ec0
--- /dev/null
+++ b/tests/ui/parser/unicode-chars.stderr
@@ -0,0 +1,36 @@
+error: unknown start of token: \u{37e}
+  --> $DIR/unicode-chars.rs:2:14
+   |
+LL |     let y = 0;
+   |              ^
+   |
+help: Unicode character ';' (Greek Question Mark) looks like ';' (Semicolon), but it is not
+   |
+LL |     let y = 0;
+   |              ~
+
+error: unknown start of token: \u{a0}
+  --> $DIR/unicode-chars.rs:5:5
+   |
+LL |         let x = 0;
+   |     ^^^^
+   |
+   = note: character appears 3 more times
+help: Unicode character ' ' (No-Break Space) looks like ' ' (Space), but it is not
+   |
+LL |         let x = 0;
+   |     ++++
+
+error: unknown start of token: \u{2a75}
+  --> $DIR/unicode-chars.rs:9:15
+   |
+LL |     let _ = 1 ⩵ 2;
+   |               ^
+   |
+help: Unicode character '⩵' (Two Consecutive Equals Signs) looks like '==' (Double Equals Sign), but it is not
+   |
+LL |     let _ = 1 == 2;
+   |               ~~
+
+error: aborting due to 3 previous errors
+
diff --git a/tests/ui/parser/unicode-control-codepoints.rs b/tests/ui/parser/unicode-control-codepoints.rs
new file mode 100644
index 000000000..df099bb62
--- /dev/null
+++ b/tests/ui/parser/unicode-control-codepoints.rs
@@ -0,0 +1,39 @@
+fn main() {
+    // if access_level != "us‫e‪r" { // Check if admin
+    //~^ ERROR unicode codepoint changing visible direction of text present in comment
+    println!("us\u{202B}e\u{202A}r");
+    println!("{:?}", r#"us\u{202B}e\u{202A}r"#);
+    println!("{:?}", b"us\u{202B}e\u{202A}r");
+    //~^ ERROR unicode escape in byte string
+    //~| ERROR unicode escape in byte string
+    println!("{:?}", br##"us\u{202B}e\u{202A}r"##);
+
+    println!("{:?}", "/*‮ } ⁦if isAdmin⁩ ⁦ begin admins only ");
+    //~^ ERROR unicode codepoint changing visible direction of text present in literal
+
+    println!("{:?}", r##"/*‮ } ⁦if isAdmin⁩ ⁦ begin admins only "##);
+    //~^ ERROR unicode codepoint changing visible direction of text present in literal
+    println!("{:?}", b"/*‮ } ⁦if isAdmin⁩ ⁦ begin admins only ");
+    //~^ ERROR non-ASCII character in byte string literal
+    //~| ERROR non-ASCII character in byte string literal
+    //~| ERROR non-ASCII character in byte string literal
+    //~| ERROR non-ASCII character in byte string literal
+    println!("{:?}", br##"/*‮ } ⁦if isAdmin⁩ ⁦ begin admins only "##);
+    //~^ ERROR non-ASCII character in raw byte string literal
+    //~| ERROR non-ASCII character in raw byte string literal
+    //~| ERROR non-ASCII character in raw byte string literal
+    //~| ERROR non-ASCII character in raw byte string literal
+    println!("{:?}", '‮');
+    //~^ ERROR unicode codepoint changing visible direction of text present in literal
+}
+
+//"/*‮ } ⁦if isAdmin⁩ ⁦ begin admins only */"
+//~^ ERROR unicode codepoint changing visible direction of text present in comment
+
+/**  '‮'); */fn foo() {}
+//~^ ERROR unicode codepoint changing visible direction of text present in doc comment
+
+/**
+ *
+ *  '‮'); */fn bar() {}
+//~^^^ ERROR unicode codepoint changing visible direction of text present in doc comment
diff --git a/tests/ui/parser/unicode-control-codepoints.stderr b/tests/ui/parser/unicode-control-codepoints.stderr
new file mode 100644
index 000000000..fc071a941
--- /dev/null
+++ b/tests/ui/parser/unicode-control-codepoints.stderr
@@ -0,0 +1,192 @@
+error: unicode escape in byte string
+  --> $DIR/unicode-control-codepoints.rs:6:26
+   |
+LL |     println!("{:?}", b"us\u{202B}e\u{202A}r");
+   |                          ^^^^^^^^ unicode escape in byte string
+   |
+   = help: unicode escape sequences cannot be used as a byte or in a byte string
+
+error: unicode escape in byte string
+  --> $DIR/unicode-control-codepoints.rs:6:35
+   |
+LL |     println!("{:?}", b"us\u{202B}e\u{202A}r");
+   |                                   ^^^^^^^^ unicode escape in byte string
+   |
+   = help: unicode escape sequences cannot be used as a byte or in a byte string
+
+error: non-ASCII character in byte string literal
+  --> $DIR/unicode-control-codepoints.rs:16:26
+   |
+LL |     println!("{:?}", b"/* } if isAdmin  begin admins only ");
+   |                          ^ must be ASCII but is '\u{202e}'
+   |
+help: if you meant to use the UTF-8 encoding of '\u{202e}', use \xHH escapes
+   |
+LL |     println!("{:?}", b"/*\xE2\x80\xAE } if isAdmin  begin admins only ");
+   |                          ~~~~~~~~~~~~
+
+error: non-ASCII character in byte string literal
+  --> $DIR/unicode-control-codepoints.rs:16:30
+   |
+LL |     println!("{:?}", b"/* } if isAdmin  begin admins only ");
+   |                             ^ must be ASCII but is '\u{2066}'
+   |
+help: if you meant to use the UTF-8 encoding of '\u{2066}', use \xHH escapes
+   |
+LL |     println!("{:?}", b"/* } \xE2\x81\xA6if isAdmin  begin admins only ");
+   |                             ~~~~~~~~~~~~
+
+error: non-ASCII character in byte string literal
+  --> $DIR/unicode-control-codepoints.rs:16:41
+   |
+LL |     println!("{:?}", b"/* } if isAdmin  begin admins only ");
+   |                                       ^ must be ASCII but is '\u{2069}'
+   |
+help: if you meant to use the UTF-8 encoding of '\u{2069}', use \xHH escapes
+   |
+LL |     println!("{:?}", b"/* } if isAdmin\xE2\x81\xA9  begin admins only ");
+   |                                       ~~~~~~~~~~~~
+
+error: non-ASCII character in byte string literal
+  --> $DIR/unicode-control-codepoints.rs:16:43
+   |
+LL |     println!("{:?}", b"/* } if isAdmin  begin admins only ");
+   |                                        ^ must be ASCII but is '\u{2066}'
+   |
+help: if you meant to use the UTF-8 encoding of '\u{2066}', use \xHH escapes
+   |
+LL |     println!("{:?}", b"/* } if isAdmin \xE2\x81\xA6 begin admins only ");
+   |                                        ~~~~~~~~~~~~
+
+error: non-ASCII character in raw byte string literal
+  --> $DIR/unicode-control-codepoints.rs:21:29
+   |
+LL |     println!("{:?}", br##"/* } if isAdmin  begin admins only "##);
+   |                             ^ must be ASCII but is '\u{202e}'
+
+error: non-ASCII character in raw byte string literal
+  --> $DIR/unicode-control-codepoints.rs:21:33
+   |
+LL |     println!("{:?}", br##"/* } if isAdmin  begin admins only "##);
+   |                                ^ must be ASCII but is '\u{2066}'
+
+error: non-ASCII character in raw byte string literal
+  --> $DIR/unicode-control-codepoints.rs:21:44
+   |
+LL |     println!("{:?}", br##"/* } if isAdmin  begin admins only "##);
+   |                                          ^ must be ASCII but is '\u{2069}'
+
+error: non-ASCII character in raw byte string literal
+  --> $DIR/unicode-control-codepoints.rs:21:46
+   |
+LL |     println!("{:?}", br##"/* } if isAdmin  begin admins only "##);
+   |                                           ^ must be ASCII but is '\u{2066}'
+
+error: unicode codepoint changing visible direction of text present in comment
+  --> $DIR/unicode-control-codepoints.rs:2:5
+   |
+LL |     // if access_level != "user" { // Check if admin
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^--^^^^^^^^^^^^^^^^^^^^^
+   |     |                        ||
+   |     |                        |'\u{202a}'
+   |     |                        '\u{202b}'
+   |     this comment contains invisible unicode text flow control codepoints
+   |
+   = note: these kind of unicode codepoints change the way text flows on applications that support them, but can cause confusion because they change the order of characters on the screen
+   = note: `#[deny(text_direction_codepoint_in_comment)]` on by default
+   = help: if their presence wasn't intentional, you can remove them
+
+error: unicode codepoint changing visible direction of text present in comment
+  --> $DIR/unicode-control-codepoints.rs:30:1
+   |
+LL | //"/* } if isAdmin  begin admins only */"
+   | ^^^^^-^^-^^^^^^^^^--^^^^^^^^^^^^^^^^^^^^^
+   | |    |  |         ||
+   | |    |  |         |'\u{2066}'
+   | |    |  |         '\u{2069}'
+   | |    |  '\u{2066}'
+   | |    '\u{202e}'
+   | this comment contains invisible unicode text flow control codepoints
+   |
+   = note: these kind of unicode codepoints change the way text flows on applications that support them, but can cause confusion because they change the order of characters on the screen
+   = help: if their presence wasn't intentional, you can remove them
+
+error: unicode codepoint changing visible direction of text present in literal
+  --> $DIR/unicode-control-codepoints.rs:11:22
+   |
+LL |     println!("{:?}", "/* } if isAdmin  begin admins only ");
+   |                      ^^^-^^-^^^^^^^^^--^^^^^^^^^^^^^^^^^^^
+   |                      |  |  |         ||
+   |                      |  |  |         |'\u{2066}'
+   |                      |  |  |         '\u{2069}'
+   |                      |  |  '\u{2066}'
+   |                      |  '\u{202e}'
+   |                      this literal contains invisible unicode text flow control codepoints
+   |
+   = note: these kind of unicode codepoints change the way text flows on applications that support them, but can cause confusion because they change the order of characters on the screen
+   = note: `#[deny(text_direction_codepoint_in_literal)]` on by default
+   = help: if their presence wasn't intentional, you can remove them
+help: if you want to keep them but make them visible in your source code, you can escape them
+   |
+LL |     println!("{:?}", "/*\u{202e} } \u{2066}if isAdmin\u{2069} \u{2066} begin admins only ");
+   |                         ~~~~~~~~   ~~~~~~~~          ~~~~~~~~ ~~~~~~~~
+
+error: unicode codepoint changing visible direction of text present in literal
+  --> $DIR/unicode-control-codepoints.rs:14:22
+   |
+LL |     println!("{:?}", r##"/* } if isAdmin  begin admins only "##);
+   |                      ^^^^^^-^^-^^^^^^^^^--^^^^^^^^^^^^^^^^^^^^^
+   |                      |     |  |         ||
+   |                      |     |  |         |'\u{2066}'
+   |                      |     |  |         '\u{2069}'
+   |                      |     |  '\u{2066}'
+   |                      |     '\u{202e}'
+   |                      this literal contains invisible unicode text flow control codepoints
+   |
+   = note: these kind of unicode codepoints change the way text flows on applications that support them, but can cause confusion because they change the order of characters on the screen
+   = help: if their presence wasn't intentional, you can remove them
+help: if you want to keep them but make them visible in your source code, you can escape them
+   |
+LL |     println!("{:?}", r##"/*\u{202e} } \u{2066}if isAdmin\u{2069} \u{2066} begin admins only "##);
+   |                            ~~~~~~~~   ~~~~~~~~          ~~~~~~~~ ~~~~~~~~
+
+error: unicode codepoint changing visible direction of text present in literal
+  --> $DIR/unicode-control-codepoints.rs:26:22
+   |
+LL |     println!("{:?}", '');
+   |                      ^-
+   |                      ||
+   |                      |'\u{202e}'
+   |                      this literal contains an invisible unicode text flow control codepoint
+   |
+   = note: these kind of unicode codepoints change the way text flows on applications that support them, but can cause confusion because they change the order of characters on the screen
+   = help: if their presence wasn't intentional, you can remove them
+help: if you want to keep them but make them visible in your source code, you can escape them
+   |
+LL |     println!("{:?}", '\u{202e}');
+   |                       ~~~~~~~~
+
+error: unicode codepoint changing visible direction of text present in doc comment
+  --> $DIR/unicode-control-codepoints.rs:33:1
+   |
+LL | /**  ''); */fn foo() {}
+   | ^^^^^^^^^^^^ this doc comment contains an invisible unicode text flow control codepoint
+   |
+   = note: these kind of unicode codepoints change the way text flows on applications that support them, but can cause confusion because they change the order of characters on the screen
+   = note: if their presence wasn't intentional, you can remove them
+   = note: if you want to keep them but make them visible in your source code, you can escape them: '\u{202e}'
+
+error: unicode codepoint changing visible direction of text present in doc comment
+  --> $DIR/unicode-control-codepoints.rs:36:1
+   |
+LL | / /**
+LL | |  *
+LL | |  *  ''); */fn bar() {}
+   | |___________^ this doc comment contains an invisible unicode text flow control codepoint
+   |
+   = note: these kind of unicode codepoints change the way text flows on applications that support them, but can cause confusion because they change the order of characters on the screen
+   = note: if their presence wasn't intentional, you can remove them
+   = note: if you want to keep them but make them visible in your source code, you can escape them: '\u{202e}'
+
+error: aborting due to 17 previous errors
+
diff --git a/tests/ui/parser/unicode-quote-chars.rs b/tests/ui/parser/unicode-quote-chars.rs
new file mode 100644
index 000000000..868d2b227
--- /dev/null
+++ b/tests/ui/parser/unicode-quote-chars.rs
@@ -0,0 +1,8 @@
+fn main() {
+    println!(“hello world”);
+    //~^ ERROR unknown start of token: \u{201c}
+    //~^^ HELP Unicode characters '“' (Left Double Quotation Mark) and '”' (Right Double Quotation Mark) look like '"' (Quotation Mark), but are not
+    //~^^^ ERROR unknown start of token: \u{201d}
+    //~^^^^ HELP Unicode character '”' (Right Double Quotation Mark) looks like '"' (Quotation Mark), but it is not
+    //~^^^^^ ERROR expected `,`, found `world`
+}
diff --git a/tests/ui/parser/unicode-quote-chars.stderr b/tests/ui/parser/unicode-quote-chars.stderr
new file mode 100644
index 000000000..092abeb53
--- /dev/null
+++ b/tests/ui/parser/unicode-quote-chars.stderr
@@ -0,0 +1,30 @@
+error: unknown start of token: \u{201c}
+  --> $DIR/unicode-quote-chars.rs:2:14
+   |
+LL |     println!(“hello world”);
+   |              ^
+   |
+help: Unicode characters '“' (Left Double Quotation Mark) and '”' (Right Double Quotation Mark) look like '"' (Quotation Mark), but are not
+   |
+LL |     println!("hello world");
+   |              ~~~~~~~~~~~~~
+
+error: unknown start of token: \u{201d}
+  --> $DIR/unicode-quote-chars.rs:2:26
+   |
+LL |     println!(“hello world”);
+   |                          ^
+   |
+help: Unicode character '”' (Right Double Quotation Mark) looks like '"' (Quotation Mark), but it is not
+   |
+LL |     println!(“hello world");
+   |                          ~
+
+error: expected `,`, found `world`
+  --> $DIR/unicode-quote-chars.rs:2:21
+   |
+LL |     println!(“hello world”);
+   |                     ^^^^^ expected `,`
+
+error: aborting due to 3 previous errors
+
diff --git a/tests/ui/parser/unmatched-delimiter-at-end-of-file.rs b/tests/ui/parser/unmatched-delimiter-at-end-of-file.rs
new file mode 100644
index 000000000..f56013266
--- /dev/null
+++ b/tests/ui/parser/unmatched-delimiter-at-end-of-file.rs
@@ -0,0 +1,11 @@
+struct S {
+    x: usize,
+    y: usize,
+}
+
+fn main() {
+    S { x: 4,
+        y: 5 };
+}
+
+fn foo() { //~ ERROR this file contains an unclosed delimiter
diff --git a/tests/ui/parser/unmatched-delimiter-at-end-of-file.stderr b/tests/ui/parser/unmatched-delimiter-at-end-of-file.stderr
new file mode 100644
index 000000000..430a13e6e
--- /dev/null
+++ b/tests/ui/parser/unmatched-delimiter-at-end-of-file.stderr
@@ -0,0 +1,8 @@
+error: this file contains an unclosed delimiter
+  --> $DIR/unmatched-delimiter-at-end-of-file.rs:11:63
+   |
+LL | fn foo() {
+   |          - unclosed delimiter                                 ^
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/unmatched-langle-1.rs b/tests/ui/parser/unmatched-langle-1.rs
new file mode 100644
index 000000000..fdf2ae398
--- /dev/null
+++ b/tests/ui/parser/unmatched-langle-1.rs
@@ -0,0 +1,9 @@
+// Check that a suggestion is issued if there are too many `<`s in a
+// generic argument list, and that the parser recovers properly.
+
+fn main() {
+    foo::<<<<Ty<i32>>();
+    //~^ ERROR: unmatched angle brackets
+    //~| ERROR: cannot find function `foo` in this scope [E0425]
+    //~| ERROR: cannot find type `Ty` in this scope [E0412]
+}
diff --git a/tests/ui/parser/unmatched-langle-1.stderr b/tests/ui/parser/unmatched-langle-1.stderr
new file mode 100644
index 000000000..cdf74bded
--- /dev/null
+++ b/tests/ui/parser/unmatched-langle-1.stderr
@@ -0,0 +1,22 @@
+error: unmatched angle brackets
+  --> $DIR/unmatched-langle-1.rs:5:10
+   |
+LL |     foo::<<<<Ty<i32>>();
+   |          ^^^ help: remove extra angle brackets
+
+error[E0412]: cannot find type `Ty` in this scope
+  --> $DIR/unmatched-langle-1.rs:5:14
+   |
+LL |     foo::<<<<Ty<i32>>();
+   |              ^^ not found in this scope
+
+error[E0425]: cannot find function `foo` in this scope
+  --> $DIR/unmatched-langle-1.rs:5:5
+   |
+LL |     foo::<<<<Ty<i32>>();
+   |     ^^^ not found in this scope
+
+error: aborting due to 3 previous errors
+
+Some errors have detailed explanations: E0412, E0425.
+For more information about an error, try `rustc --explain E0412`.
diff --git a/tests/ui/parser/unmatched-langle-2.rs b/tests/ui/parser/unmatched-langle-2.rs
new file mode 100644
index 000000000..8de0d7d89
--- /dev/null
+++ b/tests/ui/parser/unmatched-langle-2.rs
@@ -0,0 +1,15 @@
+// When there are too many opening `<`s, the compiler would previously
+// suggest nonsense if the `<`s were interspersed with other tokens:
+//
+//   error: unmatched angle brackets
+//    --> unmatched-langle.rs:2:10
+//     |
+//   2 |     foo::<Ty<<<i32>();
+//     |          ^^^ help: remove extra angle brackets
+//
+// This test makes sure that this is no longer happening.
+
+fn main() {
+    foo::<Ty<<<i32>();
+    //~^ ERROR: expected `::`, found `(`
+}
diff --git a/tests/ui/parser/unmatched-langle-2.stderr b/tests/ui/parser/unmatched-langle-2.stderr
new file mode 100644
index 000000000..773bb33d8
--- /dev/null
+++ b/tests/ui/parser/unmatched-langle-2.stderr
@@ -0,0 +1,8 @@
+error: expected `::`, found `(`
+  --> $DIR/unmatched-langle-2.rs:13:20
+   |
+LL |     foo::<Ty<<<i32>();
+   |                    ^ expected `::`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/unnecessary-let.rs b/tests/ui/parser/unnecessary-let.rs
new file mode 100644
index 000000000..627910962
--- /dev/null
+++ b/tests/ui/parser/unnecessary-let.rs
@@ -0,0 +1,11 @@
+fn main() {
+    for let x of [1, 2, 3] {}
+    //~^ ERROR expected pattern, found `let`
+    //~| ERROR missing `in` in `for` loop
+
+    match 1 {
+        let 1 => {}
+        //~^ ERROR expected pattern, found `let`
+        _ => {}
+    }
+}
diff --git a/tests/ui/parser/unnecessary-let.stderr b/tests/ui/parser/unnecessary-let.stderr
new file mode 100644
index 000000000..952119cae
--- /dev/null
+++ b/tests/ui/parser/unnecessary-let.stderr
@@ -0,0 +1,20 @@
+error: expected pattern, found `let`
+  --> $DIR/unnecessary-let.rs:2:9
+   |
+LL |     for let x of [1, 2, 3] {}
+   |         ^^^ help: remove the unnecessary `let` keyword
+
+error: missing `in` in `for` loop
+  --> $DIR/unnecessary-let.rs:2:15
+   |
+LL |     for let x of [1, 2, 3] {}
+   |               ^^ help: try using `in` here instead
+
+error: expected pattern, found `let`
+  --> $DIR/unnecessary-let.rs:7:9
+   |
+LL |         let 1 => {}
+   |         ^^^ help: remove the unnecessary `let` keyword
+
+error: aborting due to 3 previous errors
+
diff --git a/tests/ui/parser/unsafe-foreign-mod-2.rs b/tests/ui/parser/unsafe-foreign-mod-2.rs
new file mode 100644
index 000000000..77856fb67
--- /dev/null
+++ b/tests/ui/parser/unsafe-foreign-mod-2.rs
@@ -0,0 +1,8 @@
+extern "C" unsafe {
+               //~^ ERROR expected `{`, found keyword `unsafe`
+               //~| ERROR extern block cannot be declared unsafe
+    unsafe fn foo();
+        //~^ ERROR functions in `extern` blocks cannot have qualifiers
+}
+
+fn main() {}
diff --git a/tests/ui/parser/unsafe-foreign-mod-2.stderr b/tests/ui/parser/unsafe-foreign-mod-2.stderr
new file mode 100644
index 000000000..7cc2de141
--- /dev/null
+++ b/tests/ui/parser/unsafe-foreign-mod-2.stderr
@@ -0,0 +1,28 @@
+error: expected `{`, found keyword `unsafe`
+  --> $DIR/unsafe-foreign-mod-2.rs:1:12
+   |
+LL | extern "C" unsafe {
+   |            ^^^^^^ expected `{`
+
+error: extern block cannot be declared unsafe
+  --> $DIR/unsafe-foreign-mod-2.rs:1:12
+   |
+LL | extern "C" unsafe {
+   |            ^^^^^^
+
+error: functions in `extern` blocks cannot have qualifiers
+  --> $DIR/unsafe-foreign-mod-2.rs:4:15
+   |
+LL | extern "C" unsafe {
+   | ----------------- in this `extern` block
+...
+LL |     unsafe fn foo();
+   |               ^^^
+   |
+help: remove the qualifiers
+   |
+LL |     fn foo();
+   |     ~~
+
+error: aborting due to 3 previous errors
+
diff --git a/tests/ui/parser/unsafe-foreign-mod.rs b/tests/ui/parser/unsafe-foreign-mod.rs
new file mode 100644
index 000000000..eab134a4a
--- /dev/null
+++ b/tests/ui/parser/unsafe-foreign-mod.rs
@@ -0,0 +1,5 @@
+unsafe extern "C" {
+    //~^ ERROR extern block cannot be declared unsafe
+}
+
+fn main() {}
diff --git a/tests/ui/parser/unsafe-foreign-mod.stderr b/tests/ui/parser/unsafe-foreign-mod.stderr
new file mode 100644
index 000000000..4acf72c5d
--- /dev/null
+++ b/tests/ui/parser/unsafe-foreign-mod.stderr
@@ -0,0 +1,8 @@
+error: extern block cannot be declared unsafe
+  --> $DIR/unsafe-foreign-mod.rs:1:1
+   |
+LL | unsafe extern "C" {
+   | ^^^^^^
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/unsafe-mod.rs b/tests/ui/parser/unsafe-mod.rs
new file mode 100644
index 000000000..7916d878e
--- /dev/null
+++ b/tests/ui/parser/unsafe-mod.rs
@@ -0,0 +1,9 @@
+unsafe mod m {
+    //~^ ERROR module cannot be declared unsafe
+}
+
+unsafe mod n;
+//~^ ERROR module cannot be declared unsafe
+//~^^ ERROR file not found for module `n`
+
+fn main() {}
diff --git a/tests/ui/parser/unsafe-mod.stderr b/tests/ui/parser/unsafe-mod.stderr
new file mode 100644
index 000000000..dac6e7a35
--- /dev/null
+++ b/tests/ui/parser/unsafe-mod.stderr
@@ -0,0 +1,23 @@
+error[E0583]: file not found for module `n`
+  --> $DIR/unsafe-mod.rs:5:1
+   |
+LL | unsafe mod n;
+   | ^^^^^^^^^^^^^
+   |
+   = help: to create the module `n`, create file "$DIR/n.rs" or "$DIR/n/mod.rs"
+
+error: module cannot be declared unsafe
+  --> $DIR/unsafe-mod.rs:1:1
+   |
+LL | unsafe mod m {
+   | ^^^^^^
+
+error: module cannot be declared unsafe
+  --> $DIR/unsafe-mod.rs:5:1
+   |
+LL | unsafe mod n;
+   | ^^^^^^
+
+error: aborting due to 3 previous errors
+
+For more information about this error, try `rustc --explain E0583`.
diff --git a/tests/ui/parser/unsized.rs b/tests/ui/parser/unsized.rs
new file mode 100644
index 000000000..e7fd7a196
--- /dev/null
+++ b/tests/ui/parser/unsized.rs
@@ -0,0 +1,7 @@
+// Test syntax checks for `type` keyword.
+
+struct S1 for type;
+//~^ ERROR expected `where`, `{`, `(`, or `;` after struct name, found keyword `for`
+
+pub fn main() {
+}
diff --git a/tests/ui/parser/unsized.stderr b/tests/ui/parser/unsized.stderr
new file mode 100644
index 000000000..3d4ed526b
--- /dev/null
+++ b/tests/ui/parser/unsized.stderr
@@ -0,0 +1,8 @@
+error: expected `where`, `{`, `(`, or `;` after struct name, found keyword `for`
+  --> $DIR/unsized.rs:3:11
+   |
+LL | struct S1 for type;
+   |           ^^^ expected `where`, `{`, `(`, or `;` after struct name
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/unsized2.rs b/tests/ui/parser/unsized2.rs
new file mode 100644
index 000000000..21370b329
--- /dev/null
+++ b/tests/ui/parser/unsized2.rs
@@ -0,0 +1,7 @@
+// Test syntax checks for `type` keyword.
+
+fn f<X>() {}
+
+pub fn main() {
+    f<type>(); //~ ERROR expected expression, found keyword `type`
+}
diff --git a/tests/ui/parser/unsized2.stderr b/tests/ui/parser/unsized2.stderr
new file mode 100644
index 000000000..17e39b292
--- /dev/null
+++ b/tests/ui/parser/unsized2.stderr
@@ -0,0 +1,8 @@
+error: expected expression, found keyword `type`
+  --> $DIR/unsized2.rs:6:7
+   |
+LL |     f<type>();
+   |       ^^^^ expected expression
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/use-as-where-use-ends-with-mod-sep.rs b/tests/ui/parser/use-as-where-use-ends-with-mod-sep.rs
new file mode 100644
index 000000000..b4bb48418
--- /dev/null
+++ b/tests/ui/parser/use-as-where-use-ends-with-mod-sep.rs
@@ -0,0 +1,2 @@
+use std::any:: as foo; //~ ERROR expected identifier, found keyword `as`
+//~^ ERROR: expected one of `::`, `;`, or `as`, found `foo`
diff --git a/tests/ui/parser/use-as-where-use-ends-with-mod-sep.stderr b/tests/ui/parser/use-as-where-use-ends-with-mod-sep.stderr
new file mode 100644
index 000000000..192ab5eb7
--- /dev/null
+++ b/tests/ui/parser/use-as-where-use-ends-with-mod-sep.stderr
@@ -0,0 +1,14 @@
+error: expected identifier, found keyword `as`
+  --> $DIR/use-as-where-use-ends-with-mod-sep.rs:1:16
+   |
+LL | use std::any:: as foo;
+   |                ^^ expected identifier, found keyword
+
+error: expected one of `::`, `;`, or `as`, found `foo`
+  --> $DIR/use-as-where-use-ends-with-mod-sep.rs:1:19
+   |
+LL | use std::any:: as foo;
+   |                   ^^^ expected one of `::`, `;`, or `as`
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/parser/use-colon-as-mod-sep.rs b/tests/ui/parser/use-colon-as-mod-sep.rs
new file mode 100644
index 000000000..e1e8756b0
--- /dev/null
+++ b/tests/ui/parser/use-colon-as-mod-sep.rs
@@ -0,0 +1,11 @@
+// Recover from using a colon as a path separator.
+
+use std::process:Command;
+//~^ ERROR expected `::`, found `:`
+use std:fs::File;
+//~^ ERROR expected `::`, found `:`
+use std:collections:HashMap;
+//~^ ERROR expected `::`, found `:`
+//~| ERROR expected `::`, found `:`
+
+fn main() { }
diff --git a/tests/ui/parser/use-colon-as-mod-sep.stderr b/tests/ui/parser/use-colon-as-mod-sep.stderr
new file mode 100644
index 000000000..e825dfed1
--- /dev/null
+++ b/tests/ui/parser/use-colon-as-mod-sep.stderr
@@ -0,0 +1,28 @@
+error: expected `::`, found `:`
+  --> $DIR/use-colon-as-mod-sep.rs:3:17
+   |
+LL | use std::process:Command;
+   |                 ^ help: use double colon
+   |
+   = note: import paths are delimited using `::`
+
+error: expected `::`, found `:`
+  --> $DIR/use-colon-as-mod-sep.rs:5:8
+   |
+LL | use std:fs::File;
+   |        ^ help: use double colon
+
+error: expected `::`, found `:`
+  --> $DIR/use-colon-as-mod-sep.rs:7:8
+   |
+LL | use std:collections:HashMap;
+   |        ^ help: use double colon
+
+error: expected `::`, found `:`
+  --> $DIR/use-colon-as-mod-sep.rs:7:20
+   |
+LL | use std:collections:HashMap;
+   |                    ^ help: use double colon
+
+error: aborting due to 4 previous errors
+
diff --git a/tests/ui/parser/use-ends-with-mod-sep.rs b/tests/ui/parser/use-ends-with-mod-sep.rs
new file mode 100644
index 000000000..ad8da4d18
--- /dev/null
+++ b/tests/ui/parser/use-ends-with-mod-sep.rs
@@ -0,0 +1 @@
+use std::any::; //~ ERROR expected identifier, found `;`
diff --git a/tests/ui/parser/use-ends-with-mod-sep.stderr b/tests/ui/parser/use-ends-with-mod-sep.stderr
new file mode 100644
index 000000000..bd0d881a0
--- /dev/null
+++ b/tests/ui/parser/use-ends-with-mod-sep.stderr
@@ -0,0 +1,8 @@
+error: expected identifier, found `;`
+  --> $DIR/use-ends-with-mod-sep.rs:1:15
+   |
+LL | use std::any::;
+   |               ^ expected identifier
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/use-unclosed-brace.rs b/tests/ui/parser/use-unclosed-brace.rs
new file mode 100644
index 000000000..41742f37f
--- /dev/null
+++ b/tests/ui/parser/use-unclosed-brace.rs
@@ -0,0 +1,12 @@
+// error-pattern: expected one of `,`, `::`, `as`, or `}`, found `;`
+// error-pattern: this file contains an unclosed delimiter
+// error-pattern: expected item, found `}`
+use foo::{bar, baz;
+
+use std::fmt::Display;
+
+mod bar { }
+
+mod baz { }
+
+fn main() {}
diff --git a/tests/ui/parser/use-unclosed-brace.stderr b/tests/ui/parser/use-unclosed-brace.stderr
new file mode 100644
index 000000000..438fe9c47
--- /dev/null
+++ b/tests/ui/parser/use-unclosed-brace.stderr
@@ -0,0 +1,27 @@
+error: this file contains an unclosed delimiter
+  --> $DIR/use-unclosed-brace.rs:12:14
+   |
+LL | use foo::{bar, baz;
+   |          - unclosed delimiter
+...
+LL | fn main() {}
+   |              ^
+
+error: expected one of `,`, `::`, `as`, or `}`, found `;`
+  --> $DIR/use-unclosed-brace.rs:4:10
+   |
+LL | use foo::{bar, baz;
+   |          ^        ^
+   |          |        |
+   |          |        expected one of `,`, `::`, `as`, or `}`
+   |          |        help: `}` may belong here
+   |          unclosed delimiter
+
+error: expected item, found `}`
+  --> $DIR/use-unclosed-brace.rs:12:14
+   |
+LL | fn main() {}
+   |              ^ expected item
+
+error: aborting due to 3 previous errors
+
diff --git a/tests/ui/parser/utf16-be-without-bom.rs b/tests/ui/parser/utf16-be-without-bom.rs
new file mode 100644
index 000000000..22aa19717
--- /dev/null
+++ b/tests/ui/parser/utf16-be-without-bom.rs
diff --git a/tests/ui/parser/utf16-be-without-bom.stderr b/tests/ui/parser/utf16-be-without-bom.stderr
new file mode 100644
index 000000000..768d2c531
--- /dev/null
+++ b/tests/ui/parser/utf16-be-without-bom.stderr
diff --git a/tests/ui/parser/utf16-le-without-bom.rs b/tests/ui/parser/utf16-le-without-bom.rs
new file mode 100644
index 000000000..3c1049929
--- /dev/null
+++ b/tests/ui/parser/utf16-le-without-bom.rs
diff --git a/tests/ui/parser/utf16-le-without-bom.stderr b/tests/ui/parser/utf16-le-without-bom.stderr
new file mode 100644
index 000000000..4f4b91e39
--- /dev/null
+++ b/tests/ui/parser/utf16-le-without-bom.stderr
diff --git a/tests/ui/parser/utf8_idents-rpass.rs b/tests/ui/parser/utf8_idents-rpass.rs
new file mode 100644
index 000000000..206744a58
--- /dev/null
+++ b/tests/ui/parser/utf8_idents-rpass.rs
@@ -0,0 +1,39 @@
+// run-pass
+//
+#![allow(non_snake_case)]
+
+pub fn main() {
+    let ε = 0.00001f64;
+    let Π = 3.14f64;
+    let लंच = Π * Π + 1.54;
+    assert!(((लंच - 1.54) - (Π * Π)).abs() < ε);
+    assert_eq!(საჭმელად_გემრიელი_სადილი(), 0);
+}
+
+fn საჭმელად_გემრიელი_სადილი() -> isize {
+
+    // Lunch in several languages.
+
+    let ランチ = 10;
+    let 午餐 = 10;
+
+    let ארוחת_צהריי = 10;
+    let غداء = 10_usize;
+    let լանչ = 10;
+    let обед = 10;
+    let абед = 10;
+    let μεσημεριανό = 10;
+    let hádegismatur = 10;
+    let ручек = 10;
+
+    let ăn_trưa = 10;
+    let อาหารกลางวัน = 10;
+
+    // Lunchy arithmetic, mm.
+
+    assert_eq!(hádegismatur * ручек * обед, 1000);
+    assert_eq!(10, ארוחת_צהריי);
+    assert_eq!(ランチ + 午餐 + μεσημεριανό, 30);
+    assert_eq!(ăn_trưa + อาหารกลางวัน, 20);
+    return (абед + լանչ) >> غداء;
+}
diff --git a/tests/ui/parser/variadic-ffi-nested-syntactic-fail.rs b/tests/ui/parser/variadic-ffi-nested-syntactic-fail.rs
new file mode 100644
index 000000000..9eeee195e
--- /dev/null
+++ b/tests/ui/parser/variadic-ffi-nested-syntactic-fail.rs
@@ -0,0 +1,9 @@
+fn f1<'a>(x: u8, y: &'a ...) {}
+//~^ ERROR C-variadic type `...` may not be nested inside another type
+
+fn f2<'a>(x: u8, y: Vec<&'a ...>) {}
+//~^ ERROR C-variadic type `...` may not be nested inside another type
+
+fn main() {
+    let _recovery_witness: () = 0; //~ ERROR mismatched types
+}
diff --git a/tests/ui/parser/variadic-ffi-nested-syntactic-fail.stderr b/tests/ui/parser/variadic-ffi-nested-syntactic-fail.stderr
new file mode 100644
index 000000000..8b9d676a4
--- /dev/null
+++ b/tests/ui/parser/variadic-ffi-nested-syntactic-fail.stderr
@@ -0,0 +1,24 @@
+error[E0743]: C-variadic type `...` may not be nested inside another type
+  --> $DIR/variadic-ffi-nested-syntactic-fail.rs:1:25
+   |
+LL | fn f1<'a>(x: u8, y: &'a ...) {}
+   |                         ^^^
+
+error[E0743]: C-variadic type `...` may not be nested inside another type
+  --> $DIR/variadic-ffi-nested-syntactic-fail.rs:4:29
+   |
+LL | fn f2<'a>(x: u8, y: Vec<&'a ...>) {}
+   |                             ^^^
+
+error[E0308]: mismatched types
+  --> $DIR/variadic-ffi-nested-syntactic-fail.rs:8:33
+   |
+LL |     let _recovery_witness: () = 0;
+   |                            --   ^ expected `()`, found integer
+   |                            |
+   |                            expected due to this
+
+error: aborting due to 3 previous errors
+
+Some errors have detailed explanations: E0308, E0743.
+For more information about an error, try `rustc --explain E0308`.
diff --git a/tests/ui/parser/variadic-ffi-semantic-restrictions.rs b/tests/ui/parser/variadic-ffi-semantic-restrictions.rs
new file mode 100644
index 000000000..0b61e267d
--- /dev/null
+++ b/tests/ui/parser/variadic-ffi-semantic-restrictions.rs
@@ -0,0 +1,77 @@
+#![feature(c_variadic)]
+#![allow(anonymous_parameters)]
+
+fn main() {}
+
+fn f1_1(x: isize, ...) {}
+//~^ ERROR only foreign or `unsafe extern "C"` functions may be C-variadic
+
+fn f1_2(...) {}
+//~^ ERROR only foreign or `unsafe extern "C"` functions may be C-variadic
+//~| ERROR C-variadic function must be declared with at least one named argument
+
+extern "C" fn f2_1(x: isize, ...) {}
+//~^ ERROR only foreign or `unsafe extern "C"` functions may be C-variadic
+
+extern "C" fn f2_2(...) {}
+//~^ ERROR only foreign or `unsafe extern "C"` functions may be C-variadic
+//~| ERROR C-variadic function must be declared with at least one named argument
+
+extern "C" fn f2_3(..., x: isize) {}
+//~^ ERROR only foreign or `unsafe extern "C"` functions may be C-variadic
+//~| ERROR `...` must be the last argument of a C-variadic function
+
+extern "C" fn f3_1(x: isize, ...) {}
+//~^ ERROR only foreign or `unsafe extern "C"` functions may be C-variadic
+
+extern "C" fn f3_2(...) {}
+//~^ ERROR only foreign or `unsafe extern "C"` functions may be C-variadic
+//~| ERROR C-variadic function must be declared with at least one named argument
+
+extern "C" fn f3_3(..., x: isize) {}
+//~^ ERROR only foreign or `unsafe extern "C"` functions may be C-variadic
+//~| ERROR `...` must be the last argument of a C-variadic function
+
+extern "C" {
+    fn e_f1(...);
+    //~^ ERROR C-variadic function must be declared with at least one named argument
+    fn e_f2(..., x: isize);
+//~^ ERROR `...` must be the last argument of a C-variadic function
+}
+
+struct X;
+
+impl X {
+    fn i_f1(x: isize, ...) {}
+    //~^ ERROR only foreign or `unsafe extern "C"` functions may be C-variadic
+    fn i_f2(...) {}
+    //~^ ERROR only foreign or `unsafe extern "C"` functions may be C-variadic
+    //~| ERROR C-variadic function must be declared with at least one named argument
+    fn i_f3(..., x: isize, ...) {}
+    //~^ ERROR only foreign or `unsafe extern "C"` functions may be C-variadic
+    //~| ERROR only foreign or `unsafe extern "C"` functions may be C-variadic
+    //~| ERROR `...` must be the last argument of a C-variadic function
+    fn i_f4(..., x: isize, ...) {}
+    //~^ ERROR only foreign or `unsafe extern "C"` functions may be C-variadic
+    //~| ERROR only foreign or `unsafe extern "C"` functions may be C-variadic
+    //~| ERROR `...` must be the last argument of a C-variadic function
+}
+
+trait T {
+    fn t_f1(x: isize, ...) {}
+    //~^ ERROR only foreign or `unsafe extern "C"` functions may be C-variadic
+    fn t_f2(x: isize, ...);
+    //~^ ERROR only foreign or `unsafe extern "C"` functions may be C-variadic
+    fn t_f3(...) {}
+    //~^ ERROR only foreign or `unsafe extern "C"` functions may be C-variadic
+    //~| ERROR C-variadic function must be declared with at least one named argument
+    fn t_f4(...);
+    //~^ ERROR only foreign or `unsafe extern "C"` functions may be C-variadic
+    //~| ERROR C-variadic function must be declared with at least one named argument
+    fn t_f5(..., x: isize) {}
+    //~^ ERROR only foreign or `unsafe extern "C"` functions may be C-variadic
+    //~| ERROR `...` must be the last argument of a C-variadic function
+    fn t_f6(..., x: isize);
+    //~^ ERROR only foreign or `unsafe extern "C"` functions may be C-variadic
+    //~| ERROR `...` must be the last argument of a C-variadic function
+}
diff --git a/tests/ui/parser/variadic-ffi-semantic-restrictions.stderr b/tests/ui/parser/variadic-ffi-semantic-restrictions.stderr
new file mode 100644
index 000000000..f1cbbb279
--- /dev/null
+++ b/tests/ui/parser/variadic-ffi-semantic-restrictions.stderr
@@ -0,0 +1,206 @@
+error: only foreign or `unsafe extern "C"` functions may be C-variadic
+  --> $DIR/variadic-ffi-semantic-restrictions.rs:6:19
+   |
+LL | fn f1_1(x: isize, ...) {}
+   |                   ^^^
+
+error: C-variadic function must be declared with at least one named argument
+  --> $DIR/variadic-ffi-semantic-restrictions.rs:9:9
+   |
+LL | fn f1_2(...) {}
+   |         ^^^
+
+error: only foreign or `unsafe extern "C"` functions may be C-variadic
+  --> $DIR/variadic-ffi-semantic-restrictions.rs:9:9
+   |
+LL | fn f1_2(...) {}
+   |         ^^^
+
+error: only foreign or `unsafe extern "C"` functions may be C-variadic
+  --> $DIR/variadic-ffi-semantic-restrictions.rs:13:30
+   |
+LL | extern "C" fn f2_1(x: isize, ...) {}
+   |                              ^^^
+
+error: C-variadic function must be declared with at least one named argument
+  --> $DIR/variadic-ffi-semantic-restrictions.rs:16:20
+   |
+LL | extern "C" fn f2_2(...) {}
+   |                    ^^^
+
+error: only foreign or `unsafe extern "C"` functions may be C-variadic
+  --> $DIR/variadic-ffi-semantic-restrictions.rs:16:20
+   |
+LL | extern "C" fn f2_2(...) {}
+   |                    ^^^
+
+error: `...` must be the last argument of a C-variadic function
+  --> $DIR/variadic-ffi-semantic-restrictions.rs:20:20
+   |
+LL | extern "C" fn f2_3(..., x: isize) {}
+   |                    ^^^
+
+error: only foreign or `unsafe extern "C"` functions may be C-variadic
+  --> $DIR/variadic-ffi-semantic-restrictions.rs:20:20
+   |
+LL | extern "C" fn f2_3(..., x: isize) {}
+   |                    ^^^
+
+error: only foreign or `unsafe extern "C"` functions may be C-variadic
+  --> $DIR/variadic-ffi-semantic-restrictions.rs:24:30
+   |
+LL | extern "C" fn f3_1(x: isize, ...) {}
+   |                              ^^^
+
+error: C-variadic function must be declared with at least one named argument
+  --> $DIR/variadic-ffi-semantic-restrictions.rs:27:20
+   |
+LL | extern "C" fn f3_2(...) {}
+   |                    ^^^
+
+error: only foreign or `unsafe extern "C"` functions may be C-variadic
+  --> $DIR/variadic-ffi-semantic-restrictions.rs:27:20
+   |
+LL | extern "C" fn f3_2(...) {}
+   |                    ^^^
+
+error: `...` must be the last argument of a C-variadic function
+  --> $DIR/variadic-ffi-semantic-restrictions.rs:31:20
+   |
+LL | extern "C" fn f3_3(..., x: isize) {}
+   |                    ^^^
+
+error: only foreign or `unsafe extern "C"` functions may be C-variadic
+  --> $DIR/variadic-ffi-semantic-restrictions.rs:31:20
+   |
+LL | extern "C" fn f3_3(..., x: isize) {}
+   |                    ^^^
+
+error: C-variadic function must be declared with at least one named argument
+  --> $DIR/variadic-ffi-semantic-restrictions.rs:36:13
+   |
+LL |     fn e_f1(...);
+   |             ^^^
+
+error: `...` must be the last argument of a C-variadic function
+  --> $DIR/variadic-ffi-semantic-restrictions.rs:38:13
+   |
+LL |     fn e_f2(..., x: isize);
+   |             ^^^
+
+error: only foreign or `unsafe extern "C"` functions may be C-variadic
+  --> $DIR/variadic-ffi-semantic-restrictions.rs:45:23
+   |
+LL |     fn i_f1(x: isize, ...) {}
+   |                       ^^^
+
+error: C-variadic function must be declared with at least one named argument
+  --> $DIR/variadic-ffi-semantic-restrictions.rs:47:13
+   |
+LL |     fn i_f2(...) {}
+   |             ^^^
+
+error: only foreign or `unsafe extern "C"` functions may be C-variadic
+  --> $DIR/variadic-ffi-semantic-restrictions.rs:47:13
+   |
+LL |     fn i_f2(...) {}
+   |             ^^^
+
+error: `...` must be the last argument of a C-variadic function
+  --> $DIR/variadic-ffi-semantic-restrictions.rs:50:13
+   |
+LL |     fn i_f3(..., x: isize, ...) {}
+   |             ^^^
+
+error: only foreign or `unsafe extern "C"` functions may be C-variadic
+  --> $DIR/variadic-ffi-semantic-restrictions.rs:50:13
+   |
+LL |     fn i_f3(..., x: isize, ...) {}
+   |             ^^^
+
+error: only foreign or `unsafe extern "C"` functions may be C-variadic
+  --> $DIR/variadic-ffi-semantic-restrictions.rs:50:28
+   |
+LL |     fn i_f3(..., x: isize, ...) {}
+   |                            ^^^
+
+error: `...` must be the last argument of a C-variadic function
+  --> $DIR/variadic-ffi-semantic-restrictions.rs:54:13
+   |
+LL |     fn i_f4(..., x: isize, ...) {}
+   |             ^^^
+
+error: only foreign or `unsafe extern "C"` functions may be C-variadic
+  --> $DIR/variadic-ffi-semantic-restrictions.rs:54:13
+   |
+LL |     fn i_f4(..., x: isize, ...) {}
+   |             ^^^
+
+error: only foreign or `unsafe extern "C"` functions may be C-variadic
+  --> $DIR/variadic-ffi-semantic-restrictions.rs:54:28
+   |
+LL |     fn i_f4(..., x: isize, ...) {}
+   |                            ^^^
+
+error: only foreign or `unsafe extern "C"` functions may be C-variadic
+  --> $DIR/variadic-ffi-semantic-restrictions.rs:61:23
+   |
+LL |     fn t_f1(x: isize, ...) {}
+   |                       ^^^
+
+error: only foreign or `unsafe extern "C"` functions may be C-variadic
+  --> $DIR/variadic-ffi-semantic-restrictions.rs:63:23
+   |
+LL |     fn t_f2(x: isize, ...);
+   |                       ^^^
+
+error: C-variadic function must be declared with at least one named argument
+  --> $DIR/variadic-ffi-semantic-restrictions.rs:65:13
+   |
+LL |     fn t_f3(...) {}
+   |             ^^^
+
+error: only foreign or `unsafe extern "C"` functions may be C-variadic
+  --> $DIR/variadic-ffi-semantic-restrictions.rs:65:13
+   |
+LL |     fn t_f3(...) {}
+   |             ^^^
+
+error: C-variadic function must be declared with at least one named argument
+  --> $DIR/variadic-ffi-semantic-restrictions.rs:68:13
+   |
+LL |     fn t_f4(...);
+   |             ^^^
+
+error: only foreign or `unsafe extern "C"` functions may be C-variadic
+  --> $DIR/variadic-ffi-semantic-restrictions.rs:68:13
+   |
+LL |     fn t_f4(...);
+   |             ^^^
+
+error: `...` must be the last argument of a C-variadic function
+  --> $DIR/variadic-ffi-semantic-restrictions.rs:71:13
+   |
+LL |     fn t_f5(..., x: isize) {}
+   |             ^^^
+
+error: only foreign or `unsafe extern "C"` functions may be C-variadic
+  --> $DIR/variadic-ffi-semantic-restrictions.rs:71:13
+   |
+LL |     fn t_f5(..., x: isize) {}
+   |             ^^^
+
+error: `...` must be the last argument of a C-variadic function
+  --> $DIR/variadic-ffi-semantic-restrictions.rs:74:13
+   |
+LL |     fn t_f6(..., x: isize);
+   |             ^^^
+
+error: only foreign or `unsafe extern "C"` functions may be C-variadic
+  --> $DIR/variadic-ffi-semantic-restrictions.rs:74:13
+   |
+LL |     fn t_f6(..., x: isize);
+   |             ^^^
+
+error: aborting due to 34 previous errors
+
diff --git a/tests/ui/parser/variadic-ffi-syntactic-pass.rs b/tests/ui/parser/variadic-ffi-syntactic-pass.rs
new file mode 100644
index 000000000..3875d6af1
--- /dev/null
+++ b/tests/ui/parser/variadic-ffi-syntactic-pass.rs
@@ -0,0 +1,53 @@
+// check-pass
+
+fn main() {}
+
+#[cfg(FALSE)]
+fn f1_1(x: isize, ...) {}
+
+#[cfg(FALSE)]
+fn f1_2(...) {}
+
+#[cfg(FALSE)]
+extern "C" fn f2_1(x: isize, ...) {}
+
+#[cfg(FALSE)]
+extern "C" fn f2_2(...) {}
+
+#[cfg(FALSE)]
+extern "C" fn f2_3(..., x: isize) {}
+
+#[cfg(FALSE)]
+extern fn f3_1(x: isize, ...) {}
+
+#[cfg(FALSE)]
+extern fn f3_2(...) {}
+
+#[cfg(FALSE)]
+extern fn f3_3(..., x: isize) {}
+
+#[cfg(FALSE)]
+extern {
+    fn e_f1(...);
+    fn e_f2(..., x: isize);
+}
+
+struct X;
+
+#[cfg(FALSE)]
+impl X {
+    fn i_f1(x: isize, ...) {}
+    fn i_f2(...) {}
+    fn i_f3(..., x: isize, ...) {}
+    fn i_f4(..., x: isize, ...) {}
+}
+
+#[cfg(FALSE)]
+trait T {
+    fn t_f1(x: isize, ...) {}
+    fn t_f2(x: isize, ...);
+    fn t_f3(...) {}
+    fn t_f4(...);
+    fn t_f5(..., x: isize) {}
+    fn t_f6(..., x: isize);
+}
diff --git a/tests/ui/parser/virtual-structs.rs b/tests/ui/parser/virtual-structs.rs
new file mode 100644
index 000000000..ce57a3454
--- /dev/null
+++ b/tests/ui/parser/virtual-structs.rs
@@ -0,0 +1,10 @@
+// Test diagnostics for the removed struct inheritance feature.
+
+virtual struct SuperStruct {
+//~^ ERROR expected item, found reserved keyword `virtual`
+    f1: isize,
+}
+
+struct Struct : SuperStruct;
+
+pub fn main() {}
diff --git a/tests/ui/parser/virtual-structs.stderr b/tests/ui/parser/virtual-structs.stderr
new file mode 100644
index 000000000..a5211d83f
--- /dev/null
+++ b/tests/ui/parser/virtual-structs.stderr
@@ -0,0 +1,8 @@
+error: expected item, found reserved keyword `virtual`
+  --> $DIR/virtual-structs.rs:3:1
+   |
+LL | virtual struct SuperStruct {
+   | ^^^^^^^ expected item
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/where-clauses-no-bounds-or-predicates.rs b/tests/ui/parser/where-clauses-no-bounds-or-predicates.rs
new file mode 100644
index 000000000..e80db5372
--- /dev/null
+++ b/tests/ui/parser/where-clauses-no-bounds-or-predicates.rs
@@ -0,0 +1,15 @@
+// Empty predicate list is OK
+fn equal1<T>(_: &T, _: &T) -> bool where {
+    true
+}
+
+// Empty bound list is OK
+fn equal2<T>(_: &T, _: &T) -> bool where T: {
+    true
+}
+
+fn foo<'a>() where 'a {}
+//~^ ERROR expected `:`, found `{`
+
+fn main() {
+}
diff --git a/tests/ui/parser/where-clauses-no-bounds-or-predicates.stderr b/tests/ui/parser/where-clauses-no-bounds-or-predicates.stderr
new file mode 100644
index 000000000..b80b0a409
--- /dev/null
+++ b/tests/ui/parser/where-clauses-no-bounds-or-predicates.stderr
@@ -0,0 +1,8 @@
+error: expected `:`, found `{`
+  --> $DIR/where-clauses-no-bounds-or-predicates.rs:11:23
+   |
+LL | fn foo<'a>() where 'a {}
+   |                       ^ expected `:`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/where_with_bound.rs b/tests/ui/parser/where_with_bound.rs
new file mode 100644
index 000000000..3ca45f188
--- /dev/null
+++ b/tests/ui/parser/where_with_bound.rs
@@ -0,0 +1,5 @@
+fn foo<T>() where <T>::Item: ToString, T: Iterator { }
+//~^ ERROR generic parameters on `where` clauses are reserved for future use
+//~| ERROR cannot find type `Item` in the crate root
+
+fn main() {}
diff --git a/tests/ui/parser/where_with_bound.stderr b/tests/ui/parser/where_with_bound.stderr
new file mode 100644
index 000000000..ff98b3f5f
--- /dev/null
+++ b/tests/ui/parser/where_with_bound.stderr
@@ -0,0 +1,15 @@
+error: generic parameters on `where` clauses are reserved for future use
+  --> $DIR/where_with_bound.rs:1:19
+   |
+LL | fn foo<T>() where <T>::Item: ToString, T: Iterator { }
+   |                   ^^^ currently unsupported
+
+error[E0412]: cannot find type `Item` in the crate root
+  --> $DIR/where_with_bound.rs:1:24
+   |
+LL | fn foo<T>() where <T>::Item: ToString, T: Iterator { }
+   |                        ^^^^ not found in the crate root
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0412`.
diff --git a/tests/ui/parser/while-if-let-without-body.rs b/tests/ui/parser/while-if-let-without-body.rs
new file mode 100644
index 000000000..063c0145c
--- /dev/null
+++ b/tests/ui/parser/while-if-let-without-body.rs
@@ -0,0 +1,13 @@
+fn main() {
+    let container = vec![Some(1), Some(2), None];
+
+    let mut i = 0;
+    while if let Some(thing) = container.get(i) {
+        //~^ NOTE while parsing the body of this `while` expression
+        //~| NOTE this `while` condition successfully parsed
+        println!("{:?}", thing);
+        i += 1;
+    }
+}
+//~^ ERROR expected `{`, found `}`
+//~| NOTE expected `{`
diff --git a/tests/ui/parser/while-if-let-without-body.stderr b/tests/ui/parser/while-if-let-without-body.stderr
new file mode 100644
index 000000000..2dac45c11
--- /dev/null
+++ b/tests/ui/parser/while-if-let-without-body.stderr
@@ -0,0 +1,18 @@
+error: expected `{`, found `}`
+  --> $DIR/while-if-let-without-body.rs:11:1
+   |
+LL |       while if let Some(thing) = container.get(i) {
+   |  _____-----_-
+   | |     |
+   | |     while parsing the body of this `while` expression
+LL | |
+LL | |
+LL | |         println!("{:?}", thing);
+LL | |         i += 1;
+LL | |     }
+   | |_____- this `while` condition successfully parsed
+LL |   }
+   |   ^ expected `{`
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/wrong-escape-of-curly-braces.rs b/tests/ui/parser/wrong-escape-of-curly-braces.rs
new file mode 100644
index 000000000..8e5258acd
--- /dev/null
+++ b/tests/ui/parser/wrong-escape-of-curly-braces.rs
@@ -0,0 +1,8 @@
+fn main() {
+    let ok = "{{everything fine}}";
+    let bad = "\{it is wrong\}";
+    //~^  ERROR unknown character escape: `{`
+    //~|  HELP if used in a formatting string, curly braces are escaped with `{{` and `}}`
+    //~| ERROR unknown character escape: `}`
+    //~| HELP if used in a formatting string, curly braces are escaped with `{{` and `}}`
+}
diff --git a/tests/ui/parser/wrong-escape-of-curly-braces.stderr b/tests/ui/parser/wrong-escape-of-curly-braces.stderr
new file mode 100644
index 000000000..ff1a2fb0f
--- /dev/null
+++ b/tests/ui/parser/wrong-escape-of-curly-braces.stderr
@@ -0,0 +1,18 @@
+error: unknown character escape: `{`
+  --> $DIR/wrong-escape-of-curly-braces.rs:3:17
+   |
+LL |     let bad = "\{it is wrong\}";
+   |                 ^ unknown character escape
+   |
+   = help: if used in a formatting string, curly braces are escaped with `{{` and `}}`
+
+error: unknown character escape: `}`
+  --> $DIR/wrong-escape-of-curly-braces.rs:3:30
+   |
+LL |     let bad = "\{it is wrong\}";
+   |                              ^ unknown character escape
+   |
+   = help: if used in a formatting string, curly braces are escaped with `{{` and `}}`
+
+error: aborting due to 2 previous errors
+