diff options
Diffstat (limited to 'tests/ui/specialization/default-associated-type-bound-1.rs')
-rw-r--r-- | tests/ui/specialization/default-associated-type-bound-1.rs | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/tests/ui/specialization/default-associated-type-bound-1.rs b/tests/ui/specialization/default-associated-type-bound-1.rs new file mode 100644 index 000000000..c043114b5 --- /dev/null +++ b/tests/ui/specialization/default-associated-type-bound-1.rs @@ -0,0 +1,24 @@ +// Check that we check that default associated types satisfy the required +// bounds on them. + +#![feature(specialization)] +//~^ WARNING `specialization` is incomplete + +trait X { + type U: Clone; + fn unsafe_clone(&self, x: Option<&Self::U>) { + x.cloned(); + } +} + +// We cannot normalize `<T as X>::U` to `str` here, because the default could +// be overridden. The error here must therefore be found by a method other than +// normalization. +impl<T> X for T { + default type U = str; + //~^ ERROR the trait bound `str: Clone` is not satisfied +} + +pub fn main() { + 1.unsafe_clone(None); +} |