Merging upstream version 1.75.0+dfsg1.

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

12 files changed, 203 insertions, 0 deletions

diff --git a/tests/ui/expr/malformed_closure/block_instead_of_closure_in_arg.rs b/tests/ui/expr/malformed_closure/block_instead_of_closure_in_arg.rs
new file mode 100644
index 000000000..5e64fd5d2
--- /dev/null
+++ b/tests/ui/expr/malformed_closure/block_instead_of_closure_in_arg.rs
@@ -0,0 +1,10 @@
+fn main() {
+    let number = 2;
+    Some(true).filter({ //~ ERROR expected a `FnOnce(&bool)` closure, found `bool`
+        if number % 2 == 0 {
+            number == 0
+        } else {
+            number != 0
+        }
+    });
+}
diff --git a/tests/ui/expr/malformed_closure/block_instead_of_closure_in_arg.stderr b/tests/ui/expr/malformed_closure/block_instead_of_closure_in_arg.stderr
new file mode 100644
index 000000000..f70b32117
--- /dev/null
+++ b/tests/ui/expr/malformed_closure/block_instead_of_closure_in_arg.stderr
@@ -0,0 +1,27 @@
+error[E0277]: expected a `FnOnce(&bool)` closure, found `bool`
+  --> $DIR/block_instead_of_closure_in_arg.rs:3:23
+   |
+LL |        Some(true).filter({
+   |  _________________------_^
+   | |                 |
+   | |                 required by a bound introduced by this call
+LL | |/         if number % 2 == 0 {
+LL | ||             number == 0
+LL | ||         } else {
+LL | ||             number != 0
+LL | ||         }
+   | ||_________- this tail expression is of type `bool`
+LL | |      });
+   | |______^ expected an `FnOnce(&bool)` closure, found `bool`
+   |
+   = help: the trait `for<'a> FnOnce<(&'a bool,)>` is not implemented for `bool`
+note: required by a bound in `Option::<T>::filter`
+  --> $SRC_DIR/core/src/option.rs:LL:COL
+help: you might have meant to create the closure instead of a block
+   |
+LL |     Some(true).filter(|_| {
+   |                       +++
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0277`.
diff --git a/tests/ui/expr/malformed_closure/missing_block_in_fn_call.fixed b/tests/ui/expr/malformed_closure/missing_block_in_fn_call.fixed
new file mode 100644
index 000000000..b81515cda
--- /dev/null
+++ b/tests/ui/expr/malformed_closure/missing_block_in_fn_call.fixed
@@ -0,0 +1,10 @@
+// run-rustfix
+fn main() {
+    let _ = vec![1, 2, 3].into_iter().map(|x| {
+        let y = x; //~ ERROR expected expression, found `let` statement
+        y
+    });
+    let _: () = foo(); //~ ERROR mismatched types
+}
+
+fn foo() {}
diff --git a/tests/ui/expr/malformed_closure/missing_block_in_fn_call.rs b/tests/ui/expr/malformed_closure/missing_block_in_fn_call.rs
new file mode 100644
index 000000000..e47ad562f
--- /dev/null
+++ b/tests/ui/expr/malformed_closure/missing_block_in_fn_call.rs
@@ -0,0 +1,10 @@
+// run-rustfix
+fn main() {
+    let _ = vec![1, 2, 3].into_iter().map(|x|
+        let y = x; //~ ERROR expected expression, found `let` statement
+        y
+    );
+    let _: () = foo; //~ ERROR mismatched types
+}
+
+fn foo() {}
diff --git a/tests/ui/expr/malformed_closure/missing_block_in_fn_call.stderr b/tests/ui/expr/malformed_closure/missing_block_in_fn_call.stderr
new file mode 100644
index 000000000..fbb7e0e4d
--- /dev/null
+++ b/tests/ui/expr/malformed_closure/missing_block_in_fn_call.stderr
@@ -0,0 +1,38 @@
+error: expected expression, found `let` statement
+  --> $DIR/missing_block_in_fn_call.rs:4:9
+   |
+LL |     let _ = vec![1, 2, 3].into_iter().map(|x|
+   |                                           --- while parsing the body of this closure
+LL |         let y = x;
+   |         ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+help: you might have meant to open the body of the closure
+   |
+LL ~     let _ = vec![1, 2, 3].into_iter().map(|x| {
+LL |         let y = x;
+LL |         y
+LL ~     });
+   |
+
+error[E0308]: mismatched types
+  --> $DIR/missing_block_in_fn_call.rs:7:17
+   |
+LL |     let _: () = foo;
+   |            --   ^^^ expected `()`, found fn item
+   |            |
+   |            expected due to this
+...
+LL | fn foo() {}
+   | -------- function `foo` defined here
+   |
+   = note: expected unit type `()`
+                found fn item `fn() {foo}`
+help: use parentheses to call this function
+   |
+LL |     let _: () = foo();
+   |                    ++
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/expr/malformed_closure/missing_block_in_let_binding.rs b/tests/ui/expr/malformed_closure/missing_block_in_let_binding.rs
new file mode 100644
index 000000000..1ee215d15
--- /dev/null
+++ b/tests/ui/expr/malformed_closure/missing_block_in_let_binding.rs
@@ -0,0 +1,6 @@
+fn main() {
+    let x = |x|
+        let y = x; //~ ERROR expected expression, found `let` statement
+        let _ = () + ();
+        y
+}
diff --git a/tests/ui/expr/malformed_closure/missing_block_in_let_binding.stderr b/tests/ui/expr/malformed_closure/missing_block_in_let_binding.stderr
new file mode 100644
index 000000000..d4640fba9
--- /dev/null
+++ b/tests/ui/expr/malformed_closure/missing_block_in_let_binding.stderr
@@ -0,0 +1,16 @@
+error: expected expression, found `let` statement
+  --> $DIR/missing_block_in_let_binding.rs:3:9
+   |
+LL |     let x = |x|
+   |             --- while parsing the body of this closure
+LL |         let y = x;
+   |         ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+help: you might have meant to open the body of the closure
+   |
+LL |     let x = |x| {
+   |                 +
+
+error: aborting due to previous error
+
diff --git a/tests/ui/expr/malformed_closure/ruby_style_closure_parse_error.fixed b/tests/ui/expr/malformed_closure/ruby_style_closure_parse_error.fixed
new file mode 100644
index 000000000..8014dc87c
--- /dev/null
+++ b/tests/ui/expr/malformed_closure/ruby_style_closure_parse_error.fixed
@@ -0,0 +1,9 @@
+// run-rustfix
+fn main() {
+    let _ = vec![1, 2, 3].into_iter().map(|x| {
+        let y = x; //~ ERROR expected expression, found `let` statement
+        y
+    });
+    let _: () = foo(); //~ ERROR mismatched types
+}
+fn foo() {}
diff --git a/tests/ui/expr/malformed_closure/ruby_style_closure_parse_error.rs b/tests/ui/expr/malformed_closure/ruby_style_closure_parse_error.rs
new file mode 100644
index 000000000..9e4aca888
--- /dev/null
+++ b/tests/ui/expr/malformed_closure/ruby_style_closure_parse_error.rs
@@ -0,0 +1,9 @@
+// run-rustfix
+fn main() {
+    let _ = vec![1, 2, 3].into_iter().map({|x|
+        let y = x; //~ ERROR expected expression, found `let` statement
+        y
+    });
+    let _: () = foo; //~ ERROR mismatched types
+}
+fn foo() {}
diff --git a/tests/ui/expr/malformed_closure/ruby_style_closure_parse_error.stderr b/tests/ui/expr/malformed_closure/ruby_style_closure_parse_error.stderr
new file mode 100644
index 000000000..5fc48d73b
--- /dev/null
+++ b/tests/ui/expr/malformed_closure/ruby_style_closure_parse_error.stderr
@@ -0,0 +1,36 @@
+error: expected expression, found `let` statement
+  --> $DIR/ruby_style_closure_parse_error.rs:4:9
+   |
+LL |     let _ = vec![1, 2, 3].into_iter().map({|x|
+   |                                            --- while parsing the body of this closure
+LL |         let y = x;
+   |         ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+help: you might have meant to open the body of the closure, instead of enclosing the closure in a block
+   |
+LL -     let _ = vec![1, 2, 3].into_iter().map({|x|
+LL +     let _ = vec![1, 2, 3].into_iter().map(|x| {
+   |
+
+error[E0308]: mismatched types
+  --> $DIR/ruby_style_closure_parse_error.rs:7:17
+   |
+LL |     let _: () = foo;
+   |            --   ^^^ expected `()`, found fn item
+   |            |
+   |            expected due to this
+LL | }
+LL | fn foo() {}
+   | -------- function `foo` defined here
+   |
+   = note: expected unit type `()`
+                found fn item `fn() {foo}`
+help: use parentheses to call this function
+   |
+LL |     let _: () = foo();
+   |                    ++
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/expr/malformed_closure/ruby_style_closure_successful_parse.rs b/tests/ui/expr/malformed_closure/ruby_style_closure_successful_parse.rs
new file mode 100644
index 000000000..bb2e9c0a6
--- /dev/null
+++ b/tests/ui/expr/malformed_closure/ruby_style_closure_successful_parse.rs
@@ -0,0 +1,7 @@
+const x: usize =42;
+fn main() {
+    let p = Some(45).and_then({|x| //~ ERROR expected a `FnOnce({integer})` closure, found `Option<usize>`
+        1 + 1;
+        Some(x * 2)
+    });
+}
diff --git a/tests/ui/expr/malformed_closure/ruby_style_closure_successful_parse.stderr b/tests/ui/expr/malformed_closure/ruby_style_closure_successful_parse.stderr
new file mode 100644
index 000000000..e44ec5ca9
--- /dev/null
+++ b/tests/ui/expr/malformed_closure/ruby_style_closure_successful_parse.stderr
@@ -0,0 +1,25 @@
+error[E0277]: expected a `FnOnce({integer})` closure, found `Option<usize>`
+  --> $DIR/ruby_style_closure_successful_parse.rs:3:31
+   |
+LL |       let p = Some(45).and_then({|x|
+   |  ______________________--------_^
+   | |                      |
+   | |                      required by a bound introduced by this call
+LL | |         1 + 1;
+LL | |         Some(x * 2)
+   | |         ----------- this tail expression is of type `Option<usize>`
+LL | |     });
+   | |_____^ expected an `FnOnce({integer})` closure, found `Option<usize>`
+   |
+   = help: the trait `FnOnce<({integer},)>` is not implemented for `Option<usize>`
+note: required by a bound in `Option::<T>::and_then`
+  --> $SRC_DIR/core/src/option.rs:LL:COL
+help: you might have meant to open the closure body instead of placing a closure within a block
+   |
+LL -     let p = Some(45).and_then({|x|
+LL +     let p = Some(45).and_then(|x| {
+   |
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0277`.