From 631cd5845e8de329d0e227aaa707d7ea228b8f8f Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:20:29 +0200
Subject: Merging upstream version 1.70.0+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 .../cross_crate_predicate.stderr                   |  8 ++--
 .../generic_const_exprs/issue-94287.stderr         |  2 +-
 .../mismatched-gat-subst-kind.rs                   | 11 +++++
 .../mismatched-gat-subst-kind.stderr               | 18 ++++++++
 .../typeid-equality-by-subtyping.rs                | 52 ++++++++++++++++++++++
 5 files changed, 86 insertions(+), 5 deletions(-)
 create mode 100644 tests/ui/const-generics/generic_const_exprs/mismatched-gat-subst-kind.rs
 create mode 100644 tests/ui/const-generics/generic_const_exprs/mismatched-gat-subst-kind.stderr
 create mode 100644 tests/ui/const-generics/generic_const_exprs/typeid-equality-by-subtyping.rs

(limited to 'tests/ui/const-generics/generic_const_exprs')

diff --git a/tests/ui/const-generics/generic_const_exprs/cross_crate_predicate.stderr b/tests/ui/const-generics/generic_const_exprs/cross_crate_predicate.stderr
index 7b4d46b82..6b3396a25 100644
--- a/tests/ui/const-generics/generic_const_exprs/cross_crate_predicate.stderr
+++ b/tests/ui/const-generics/generic_const_exprs/cross_crate_predicate.stderr
@@ -1,8 +1,8 @@
 error: unconstrained generic constant
-  --> $DIR/cross_crate_predicate.rs:7:13
+  --> $DIR/cross_crate_predicate.rs:7:44
    |
 LL |     let _ = const_evaluatable_lib::test1::<T>();
-   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |                                            ^
    |
    = help: try adding a `where` bound using this expression: `where [(); std::mem::size_of::<T>() - 1]:`
 note: required by a bound in `test1`
@@ -12,10 +12,10 @@ LL |     [u8; std::mem::size_of::<T>() - 1]: Sized,
    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `test1`
 
 error: unconstrained generic constant
-  --> $DIR/cross_crate_predicate.rs:7:13
+  --> $DIR/cross_crate_predicate.rs:7:44
    |
 LL |     let _ = const_evaluatable_lib::test1::<T>();
-   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |                                            ^
    |
    = help: try adding a `where` bound using this expression: `where [(); std::mem::size_of::<T>() - 1]:`
 note: required by a bound in `test1`
diff --git a/tests/ui/const-generics/generic_const_exprs/issue-94287.stderr b/tests/ui/const-generics/generic_const_exprs/issue-94287.stderr
index 7390a0077..dc7d0c54f 100644
--- a/tests/ui/const-generics/generic_const_exprs/issue-94287.stderr
+++ b/tests/ui/const-generics/generic_const_exprs/issue-94287.stderr
@@ -8,7 +8,7 @@ LL |     If<{ FRAC <= 32 }>: True,
 help: consider enabling this feature
   --> $DIR/issue-94287.rs:1:1
    |
-LL | #![feature(generic_const_exprs)]
+LL + #![feature(generic_const_exprs)]
    |
 
 error: aborting due to previous error
diff --git a/tests/ui/const-generics/generic_const_exprs/mismatched-gat-subst-kind.rs b/tests/ui/const-generics/generic_const_exprs/mismatched-gat-subst-kind.rs
new file mode 100644
index 000000000..734a37862
--- /dev/null
+++ b/tests/ui/const-generics/generic_const_exprs/mismatched-gat-subst-kind.rs
@@ -0,0 +1,11 @@
+#![feature(generic_const_exprs)]
+//~^ WARN the feature `generic_const_exprs` is incomplete
+
+trait B {
+    type U<T>;
+}
+
+fn f<T: B<U<1i32> = ()>>() {}
+//~^ ERROR constant provided when a type was expected
+
+fn main() {}
diff --git a/tests/ui/const-generics/generic_const_exprs/mismatched-gat-subst-kind.stderr b/tests/ui/const-generics/generic_const_exprs/mismatched-gat-subst-kind.stderr
new file mode 100644
index 000000000..8b6eb5b75
--- /dev/null
+++ b/tests/ui/const-generics/generic_const_exprs/mismatched-gat-subst-kind.stderr
@@ -0,0 +1,18 @@
+warning: the feature `generic_const_exprs` is incomplete and may not be safe to use and/or cause compiler crashes
+  --> $DIR/mismatched-gat-subst-kind.rs:1:12
+   |
+LL | #![feature(generic_const_exprs)]
+   |            ^^^^^^^^^^^^^^^^^^^
+   |
+   = note: see issue #76560 <https://github.com/rust-lang/rust/issues/76560> for more information
+   = note: `#[warn(incomplete_features)]` on by default
+
+error[E0747]: constant provided when a type was expected
+  --> $DIR/mismatched-gat-subst-kind.rs:8:13
+   |
+LL | fn f<T: B<U<1i32> = ()>>() {}
+   |             ^^^^
+
+error: aborting due to previous error; 1 warning emitted
+
+For more information about this error, try `rustc --explain E0747`.
diff --git a/tests/ui/const-generics/generic_const_exprs/typeid-equality-by-subtyping.rs b/tests/ui/const-generics/generic_const_exprs/typeid-equality-by-subtyping.rs
new file mode 100644
index 000000000..85345d65c
--- /dev/null
+++ b/tests/ui/const-generics/generic_const_exprs/typeid-equality-by-subtyping.rs
@@ -0,0 +1,52 @@
+// check-pass
+// known-bug: #97156
+
+#![feature(const_type_id, generic_const_exprs)]
+#![allow(incomplete_features)]
+
+use std::any::TypeId;
+// `One` and `Two` are currently considered equal types, as both
+// `One <: Two` and `One :> Two` holds.
+type One = for<'a> fn(&'a (), &'a ());
+type Two = for<'a, 'b> fn(&'a (), &'b ());
+trait AssocCt {
+    const ASSOC: usize;
+}
+const fn to_usize<T: 'static>() -> usize {
+    const WHAT_A_TYPE: TypeId = TypeId::of::<One>();
+    match TypeId::of::<T>() {
+        WHAT_A_TYPE => 0,
+        _ => 1000,
+    }
+}
+impl<T: 'static> AssocCt for T {
+    const ASSOC: usize = to_usize::<T>();
+}
+
+trait WithAssoc<U> {
+    type Assoc;
+}
+impl<T: 'static> WithAssoc<()> for T where [(); <T as AssocCt>::ASSOC]: {
+    type Assoc = [u8; <T as AssocCt>::ASSOC];
+}
+
+fn generic<T: 'static, U>(x: <T as WithAssoc<U>>::Assoc) -> <T as WithAssoc<U>>::Assoc
+where
+    [(); <T as AssocCt>::ASSOC]:,
+    T: WithAssoc<U>,
+{
+    x
+}
+
+
+fn unsound<T>(x: <One as WithAssoc<T>>::Assoc) -> <Two as WithAssoc<T>>::Assoc
+where
+    One: WithAssoc<T>,
+{
+    let x: <Two as WithAssoc<T>>::Assoc = generic::<One, T>(x);
+    x
+}
+
+fn main() {
+    println!("{:?}", unsound::<()>([]));
+}
-- 
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