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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/regions/regions-issue-22246.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 'src/test/ui/regions/regions-issue-22246.rs')
-rw-r--r-- | src/test/ui/regions/regions-issue-22246.rs | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/src/test/ui/regions/regions-issue-22246.rs b/src/test/ui/regions/regions-issue-22246.rs new file mode 100644 index 000000000..085883367 --- /dev/null +++ b/src/test/ui/regions/regions-issue-22246.rs @@ -0,0 +1,29 @@ +// run-pass +#![allow(unused_imports)] +// Regression test for issue #22246 -- we should be able to deduce +// that `&'a B::Owned` implies that `B::Owned : 'a`. + +// pretty-expanded FIXME #23616 + +#![allow(dead_code)] + +use std::ops::Deref; + +pub trait ToOwned: Sized { + type Owned: Borrow<Self>; + fn to_owned(&self) -> Self::Owned; +} + +pub trait Borrow<Borrowed> { + fn borrow(&self) -> &Borrowed; +} + +pub struct Foo<B:ToOwned> { + owned: B::Owned +} + +fn foo<B:ToOwned>(this: &Foo<B>) -> &B { + this.owned.borrow() +} + +fn main() { } |