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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
commit | 218caa410aa38c29984be31a5229b9fa717560ee (patch) | |
tree | c54bd55eeb6e4c508940a30e94c0032fbd45d677 /tests/ui/nll/ty-outlives/projection-where-clause-env-wrong-bound.rs | |
parent | Releasing progress-linux version 1.67.1+dfsg1-1~progress7.99u1. (diff) | |
download | rustc-218caa410aa38c29984be31a5229b9fa717560ee.tar.xz rustc-218caa410aa38c29984be31a5229b9fa717560ee.zip |
Merging upstream version 1.68.2+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/nll/ty-outlives/projection-where-clause-env-wrong-bound.rs')
-rw-r--r-- | tests/ui/nll/ty-outlives/projection-where-clause-env-wrong-bound.rs | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/tests/ui/nll/ty-outlives/projection-where-clause-env-wrong-bound.rs b/tests/ui/nll/ty-outlives/projection-where-clause-env-wrong-bound.rs new file mode 100644 index 000000000..dce88b88c --- /dev/null +++ b/tests/ui/nll/ty-outlives/projection-where-clause-env-wrong-bound.rs @@ -0,0 +1,34 @@ +// Test that we are able to establish that `<T as +// MyTrait<'a>>::Output` outlives `'b` here. We need to prove however +// that `<T as MyTrait<'a>>::Output` outlives `'a`, so we also have to +// prove that `'b: 'a`. + +trait MyTrait<'a> { + type Output; +} + +fn foo1<'a, 'b, T>() -> &'a () +where + T: MyTrait<'a>, + <T as MyTrait<'a>>::Output: 'b, +{ + bar::<T::Output>() //~ ERROR may not live long enough +} + +fn foo2<'a, 'b, T>() -> &'a () +where + T: MyTrait<'a>, + <T as MyTrait<'a>>::Output: 'b, + 'b: 'a, +{ + bar::<T::Output>() // OK +} + +fn bar<'a, T>() -> &'a () +where + T: 'a, +{ + &() +} + +fn main() {} |