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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/consts/underscore_const_names.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/consts/underscore_const_names.rs')
-rw-r--r-- | src/test/ui/consts/underscore_const_names.rs | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/src/test/ui/consts/underscore_const_names.rs b/src/test/ui/consts/underscore_const_names.rs new file mode 100644 index 000000000..d0e625bf1 --- /dev/null +++ b/src/test/ui/consts/underscore_const_names.rs @@ -0,0 +1,31 @@ +// build-pass (FIXME(62277): could be check-pass?) + +#![deny(unused)] + +trait Trt {} +pub struct Str {} +impl Trt for Str {} + +macro_rules! check_impl { + ($struct:ident,$trait:ident) => { + const _ : () = { + use std::marker::PhantomData; + struct ImplementsTrait<T: $trait>(PhantomData<T>); + let _ = ImplementsTrait::<$struct>(PhantomData); + () + }; + } +} + +const _ : () = (); + +const _ : i32 = 42; +const _ : Str = Str{}; + +check_impl!(Str, Trt); +check_impl!(Str, Trt); + +fn main() { + check_impl!(Str, Trt); + check_impl!(Str, Trt); +} |