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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/issues/issue-33387.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/issues/issue-33387.rs')
-rw-r--r-- | src/test/ui/issues/issue-33387.rs | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/src/test/ui/issues/issue-33387.rs b/src/test/ui/issues/issue-33387.rs new file mode 100644 index 000000000..499fa7c1f --- /dev/null +++ b/src/test/ui/issues/issue-33387.rs @@ -0,0 +1,32 @@ +// run-pass +#![feature(rustc_attrs)] + +use std::sync::Arc; + +trait Foo { + fn get(&self) -> [u8; 2]; +} + +impl Foo for [u8; 2] { + fn get(&self) -> [u8; 2] { + *self + } +} + +struct Bar<T: ?Sized>(T); + +fn unsize_fat_ptr<'a>(x: &'a Bar<dyn Foo + Send + 'a>) -> &'a Bar<dyn Foo + 'a> { + x +} + +fn unsize_nested_fat_ptr(x: Arc<dyn Foo + Send>) -> Arc<dyn Foo> { + x +} + +fn main() { + let x: Box<Bar<dyn Foo + Send>> = Box::new(Bar([1,2])); + assert_eq!(unsize_fat_ptr(&*x).0.get(), [1, 2]); + + let x: Arc<dyn Foo + Send> = Arc::new([3, 4]); + assert_eq!(unsize_nested_fat_ptr(x).get(), [3, 4]); +} |