rust/tests/ui/traits/impl-object-overlap-issue-23853.rs
2024-02-16 20:02:50 +00:00

19 lines
503 B
Rust

//@ run-pass
// Test that we are able to compile the case where both a blanket impl
// and the object type itself supply the required trait obligation.
// In this case, the blanket impl for `Foo` applies to any type,
// including `Bar`, but the object type `Bar` also implicitly supplies
// this context.
trait Foo { fn dummy(&self) { } } //~ WARN method `dummy` is never used
trait Bar: Foo { }
impl<T:?Sized> Foo for T { }
fn want_foo<B:?Sized+Foo>() { }
fn main() {
want_foo::<dyn Bar>();
}