diff options
Diffstat (limited to 'src/test/ui/traits/negative-impls/negative-specializes-positive-item.rs')
-rw-r--r-- | src/test/ui/traits/negative-impls/negative-specializes-positive-item.rs | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/test/ui/traits/negative-impls/negative-specializes-positive-item.rs b/src/test/ui/traits/negative-impls/negative-specializes-positive-item.rs new file mode 100644 index 000000000..4281eedaf --- /dev/null +++ b/src/test/ui/traits/negative-impls/negative-specializes-positive-item.rs @@ -0,0 +1,13 @@ +#![feature(specialization)] //~ WARN the feature `specialization` is incomplete +#![feature(negative_impls)] + +// Negative impl for u32 cannot "specialize" the base impl. +trait MyTrait { + fn foo(); +} +impl<T> MyTrait for T { + default fn foo() {} +} +impl !MyTrait for u32 {} //~ ERROR E0751 + +fn main() {} |