diff options
Diffstat (limited to 'tests/ui/consts/const_in_pattern/issue-73431.rs')
-rw-r--r-- | tests/ui/consts/const_in_pattern/issue-73431.rs | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/tests/ui/consts/const_in_pattern/issue-73431.rs b/tests/ui/consts/const_in_pattern/issue-73431.rs new file mode 100644 index 000000000..fa18a3af1 --- /dev/null +++ b/tests/ui/consts/const_in_pattern/issue-73431.rs @@ -0,0 +1,29 @@ +// run-pass + +// Regression test for https://github.com/rust-lang/rust/issues/73431. + +pub trait Zero { + const ZERO: Self; +} + +impl Zero for usize { + const ZERO: Self = 0; +} + +impl<T: Zero> Zero for Wrapper<T> { + const ZERO: Self = Wrapper(T::ZERO); +} + +#[derive(Debug, PartialEq, Eq)] +pub struct Wrapper<T>(T); + +fn is_zero(x: Wrapper<usize>) -> bool { + match x { + Zero::ZERO => true, + _ => false, + } +} + +fn main() { + let _ = is_zero(Wrapper(42)); +} |