diff options
Diffstat (limited to 'tests/ui/specialization/min_specialization/specialize_on_trait.rs')
-rw-r--r-- | tests/ui/specialization/min_specialization/specialize_on_trait.rs | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/tests/ui/specialization/min_specialization/specialize_on_trait.rs b/tests/ui/specialization/min_specialization/specialize_on_trait.rs new file mode 100644 index 000000000..0588442c3 --- /dev/null +++ b/tests/ui/specialization/min_specialization/specialize_on_trait.rs @@ -0,0 +1,20 @@ +// Test that specializing on a trait is not allowed in general. + +#![feature(min_specialization)] + +trait SpecMarker {} + +trait X { + fn f(); +} + +impl<T> X for T { + default fn f() {} +} + +impl<T: SpecMarker> X for T { + //~^ ERROR cannot specialize on trait `SpecMarker` + fn f() {} +} + +fn main() {} |