diff options
Diffstat (limited to 'src/test/ui/impl-trait/impl-generic-mismatch.rs')
-rw-r--r-- | src/test/ui/impl-trait/impl-generic-mismatch.rs | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/src/test/ui/impl-trait/impl-generic-mismatch.rs b/src/test/ui/impl-trait/impl-generic-mismatch.rs new file mode 100644 index 000000000..ba678bb03 --- /dev/null +++ b/src/test/ui/impl-trait/impl-generic-mismatch.rs @@ -0,0 +1,32 @@ +use std::fmt::Debug; + +trait Foo { + fn foo(&self, _: &impl Debug); +} + +impl Foo for () { + fn foo<U: Debug>(&self, _: &U) { } + //~^ Error method `foo` has incompatible signature for trait +} + +trait Bar { + fn bar<U: Debug>(&self, _: &U); +} + +impl Bar for () { + fn bar(&self, _: &impl Debug) { } + //~^ Error method `bar` has incompatible signature for trait +} + +// With non-local trait (#49841): + +use std::hash::{Hash, Hasher}; + +struct X; + +impl Hash for X { + fn hash(&self, hasher: &mut impl Hasher) {} + //~^ Error method `hash` has incompatible signature for trait +} + +fn main() {} |