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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-06-19 09:26:03 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-06-19 09:26:03 +0000
commit9918693037dce8aa4bb6f08741b6812923486c18 (patch)
tree21d2b40bec7e6a7ea664acee056eb3d08e15a1cf /tests/ui/traits/new-solver/alias-sub.rs
parentReleasing progress-linux version 1.75.0+dfsg1-5~progress7.99u1. (diff)
downloadrustc-9918693037dce8aa4bb6f08741b6812923486c18.tar.xz
rustc-9918693037dce8aa4bb6f08741b6812923486c18.zip
Merging upstream version 1.76.0+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/traits/new-solver/alias-sub.rs')
-rw-r--r--tests/ui/traits/new-solver/alias-sub.rs34
1 files changed, 0 insertions, 34 deletions
diff --git a/tests/ui/traits/new-solver/alias-sub.rs b/tests/ui/traits/new-solver/alias-sub.rs
deleted file mode 100644
index 30c1981a9..000000000
--- a/tests/ui/traits/new-solver/alias-sub.rs
+++ /dev/null
@@ -1,34 +0,0 @@
-// compile-flags: -Ztrait-solver=next
-// check-pass
-
-trait Trait {
- type Assoc: Sized;
-}
-
-impl Trait for &'static str {
- type Assoc = &'static str;
-}
-
-// Wrapper is just here to get around stupid `Sized` obligations in mir typeck
-struct Wrapper<T: ?Sized>(std::marker::PhantomData<T>);
-fn mk<T: Trait>(x: T) -> Wrapper<<T as Trait>::Assoc> { todo!() }
-
-
-trait IsStaticStr {}
-impl IsStaticStr for (&'static str,) {}
-fn define<T: IsStaticStr>(_: T) {}
-
-fn foo<'a, T: Trait>() {
- let y = Default::default();
-
- // `<?0 as Trait>::Assoc <: &'a str`
- // In the old solver, this would *equate* the LHS and RHS.
- let _: Wrapper<&'a str> = mk(y);
-
- // ... then later on, we constrain `?0 = &'static str`
- // but that should not mean that `'a = 'static`, because
- // we should use *sub* above.
- define((y,));
-}
-
-fn main() {}