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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/traits/pointee-deduction.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/traits/pointee-deduction.rs')
-rw-r--r-- | src/test/ui/traits/pointee-deduction.rs | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/test/ui/traits/pointee-deduction.rs b/src/test/ui/traits/pointee-deduction.rs new file mode 100644 index 000000000..c333b0129 --- /dev/null +++ b/src/test/ui/traits/pointee-deduction.rs @@ -0,0 +1,22 @@ +// run-pass + +#![feature(ptr_metadata)] + +use std::alloc::Layout; +use std::ptr::Pointee; + +trait Foo { + type Bar; +} + +impl Foo for () { + type Bar = (); +} + +struct Wrapper1<T: Foo>(#[allow(unused_tuple_struct_fields)] <T as Foo>::Bar); +struct Wrapper2<T: Foo>(#[allow(unused_tuple_struct_fields)] <Wrapper1<T> as Pointee>::Metadata); + +fn main() { + let _: Wrapper2<()> = Wrapper2(()); + let _ = Layout::new::<Wrapper2<()>>(); +} |