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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/impl-trait/issues/issue-57464-unexpected-regions.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/impl-trait/issues/issue-57464-unexpected-regions.rs')
-rw-r--r-- | tests/ui/impl-trait/issues/issue-57464-unexpected-regions.rs | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/tests/ui/impl-trait/issues/issue-57464-unexpected-regions.rs b/tests/ui/impl-trait/issues/issue-57464-unexpected-regions.rs new file mode 100644 index 000000000..c4f738a34 --- /dev/null +++ b/tests/ui/impl-trait/issues/issue-57464-unexpected-regions.rs @@ -0,0 +1,29 @@ +// Regression test for issue 57464. +// +// Closure are (surprisingly) allowed to outlive their signature. As such it +// was possible to end up with `ReScope`s appearing in the concrete type of an +// opaque type. As all regions are now required to outlive the bound in an +// opaque type we avoid the issue here. + +// check-pass + +struct A<F>(F); + +unsafe impl <'a, 'b, F: Fn(&'a i32) -> &'b i32> Send for A<F> {} + +fn wrapped_closure() -> impl Sized { + let f = |x| x; + f(&0); + A(f) +} + +fn wrapped_closure_with_bound() -> impl Sized + 'static { + let f = |x| x; + f(&0); + A(f) +} + +fn main() { + let x: Box<dyn Send> = Box::new(wrapped_closure()); + let y: Box<dyn Send> = Box::new(wrapped_closure_with_bound()); +} |