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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:03 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:03 +0000 |
commit | 64d98f8ee037282c35007b64c2649055c56af1db (patch) | |
tree | 5492bcf97fce41ee1c0b1cc2add283f3e66cdab0 /tests/ui/nll/ty-outlives/projection-no-regions-closure.rs | |
parent | Adding debian version 1.67.1+dfsg1-1. (diff) | |
download | rustc-64d98f8ee037282c35007b64c2649055c56af1db.tar.xz rustc-64d98f8ee037282c35007b64c2649055c56af1db.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-no-regions-closure.rs')
-rw-r--r-- | tests/ui/nll/ty-outlives/projection-no-regions-closure.rs | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/tests/ui/nll/ty-outlives/projection-no-regions-closure.rs b/tests/ui/nll/ty-outlives/projection-no-regions-closure.rs new file mode 100644 index 000000000..2d9c008c7 --- /dev/null +++ b/tests/ui/nll/ty-outlives/projection-no-regions-closure.rs @@ -0,0 +1,55 @@ +// compile-flags:-Zverbose + +// Tests closures that propagate an outlives relationship to their +// creator where the subject is a projection with no regions (`<T as +// Iterator>::Item`, to be exact). + +#![allow(warnings)] +#![feature(rustc_attrs)] + +trait Anything { } + +impl<T> Anything for T { } + +fn with_signature<'a, T, F>(x: Box<T>, op: F) -> Box<dyn Anything + 'a> + where F: FnOnce(Box<T>) -> Box<dyn Anything + 'a> +{ + op(x) +} + +#[rustc_regions] +fn no_region<'a, T>(x: Box<T>) -> Box<dyn Anything + 'a> +where + T: Iterator, +{ + with_signature(x, |mut y| Box::new(y.next())) + //~^ ERROR the associated type `<T as Iterator>::Item` may not live long enough +} + +#[rustc_regions] +fn correct_region<'a, T>(x: Box<T>) -> Box<dyn Anything + 'a> +where + T: 'a + Iterator, +{ + with_signature(x, |mut y| Box::new(y.next())) +} + +#[rustc_regions] +fn wrong_region<'a, 'b, T>(x: Box<T>) -> Box<dyn Anything + 'a> +where + T: 'b + Iterator, +{ + with_signature(x, |mut y| Box::new(y.next())) + //~^ ERROR the associated type `<T as Iterator>::Item` may not live long enough +} + +#[rustc_regions] +fn outlives_region<'a, 'b, T>(x: Box<T>) -> Box<dyn Anything + 'a> +where + T: 'b + Iterator, + 'b: 'a, +{ + with_signature(x, |mut y| Box::new(y.next())) +} + +fn main() {} |