diff options
Diffstat (limited to 'tests/ui/rfcs/rfc-2632-const-trait-impl/specialization/issue-95187-same-trait-bound-different-constness.rs')
-rw-r--r-- | tests/ui/rfcs/rfc-2632-const-trait-impl/specialization/issue-95187-same-trait-bound-different-constness.rs | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/tests/ui/rfcs/rfc-2632-const-trait-impl/specialization/issue-95187-same-trait-bound-different-constness.rs b/tests/ui/rfcs/rfc-2632-const-trait-impl/specialization/issue-95187-same-trait-bound-different-constness.rs new file mode 100644 index 000000000..51bfaf73b --- /dev/null +++ b/tests/ui/rfcs/rfc-2632-const-trait-impl/specialization/issue-95187-same-trait-bound-different-constness.rs @@ -0,0 +1,57 @@ +// Tests that `T: ~const Foo` in a specializing impl is treated as equivalent to +// `T: Foo` in the default impl for the purposes of specialization (i.e., it +// does not think that the user is attempting to specialize on trait `Foo`). + +// check-pass + +#![feature(rustc_attrs)] +#![feature(min_specialization)] +#![feature(const_trait_impl)] + +#[rustc_specialization_trait] +trait Specialize {} + +#[const_trait] +trait Foo {} + +#[const_trait] +trait Bar { + fn bar(); +} + +impl<T> Bar for T +where + T: Foo, +{ + default fn bar() {} +} + +impl<T> const Bar for T +where + T: ~const Foo, + T: Specialize, +{ + fn bar() {} +} + +#[const_trait] +trait Baz { + fn baz(); +} + +impl<T> const Baz for T +where + T: Foo, +{ + default fn baz() {} +} + +impl<T> const Baz for T +where + T: ~const Foo, + T: Specialize, +{ + fn baz() {} +} + +fn main() {} |