diff options
Diffstat (limited to 'src/test/ui/traits/object-does-not-impl-trait.rs')
| -rw-r--r-- | src/test/ui/traits/object-does-not-impl-trait.rs | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/test/ui/traits/object-does-not-impl-trait.rs b/src/test/ui/traits/object-does-not-impl-trait.rs new file mode 100644 index 000000000..b3b679813 --- /dev/null +++ b/src/test/ui/traits/object-does-not-impl-trait.rs @@ -0,0 +1,8 @@ +// Test that an object type `Box<Foo>` is not considered to implement the +// trait `Foo`. Issue #5087. + +trait Foo {} +fn take_foo<F:Foo>(f: F) {} +fn take_object(f: Box<dyn Foo>) { take_foo(f); } +//~^ ERROR `Box<dyn Foo>: Foo` is not satisfied +fn main() {} |