diff options
Diffstat (limited to 'tests/ui/coherence/coherence-blanket-conflicts-with-blanket-unimplemented.rs')
-rw-r--r-- | tests/ui/coherence/coherence-blanket-conflicts-with-blanket-unimplemented.rs | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/tests/ui/coherence/coherence-blanket-conflicts-with-blanket-unimplemented.rs b/tests/ui/coherence/coherence-blanket-conflicts-with-blanket-unimplemented.rs new file mode 100644 index 000000000..950a08ff2 --- /dev/null +++ b/tests/ui/coherence/coherence-blanket-conflicts-with-blanket-unimplemented.rs @@ -0,0 +1,25 @@ +use std::fmt::Debug; +use std::default::Default; + +// Test that two blanket impls conflict (at least without negative +// bounds). After all, some other crate could implement Even or Odd +// for the same type (though this crate doesn't implement them at all). + +trait MyTrait { + fn get(&self) -> usize; +} + +trait Even {} + +trait Odd {} + +impl<T:Even> MyTrait for T { + fn get(&self) -> usize { 0 } +} + +impl<T:Odd> MyTrait for T { +//~^ ERROR E0119 + fn get(&self) -> usize { 0 } +} + +fn main() { } |