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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /src/test/ui/traits/object/enforce-supertrait-projection.rs | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/test/ui/traits/object/enforce-supertrait-projection.rs | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/test/ui/traits/object/enforce-supertrait-projection.rs b/src/test/ui/traits/object/enforce-supertrait-projection.rs new file mode 100644 index 000000000..2c9b41eea --- /dev/null +++ b/src/test/ui/traits/object/enforce-supertrait-projection.rs @@ -0,0 +1,24 @@ +trait SuperTrait { + type A; + type B; +} + +trait Trait: SuperTrait<A = <Self as SuperTrait>::B> {} + +fn transmute<A, B>(x: A) -> B { + foo::<A, B, dyn Trait<A = A, B = B>>(x) + //~^ ERROR type mismatch resolving `<dyn Trait<B = B, A = A> as SuperTrait>::A == B` +} + +fn foo<A, B, T: ?Sized>(x: T::A) -> B +where + T: Trait<B = B>, +{ + x +} + +static X: u8 = 0; +fn main() { + let x = transmute::<&u8, &[u8; 1_000_000]>(&X); + println!("{:?}", x[100_000]); +} |