| #![feature(no_core)] | |
| #![no_core] | |
| #![feature(lang_items)] | |
| #[lang = "sized"] | |
| pub trait Sized {} | |
| trait Foo<T> { | |
| type Output; | |
| fn test(self, slice: &T) -> &Self::Output; | |
| } | |
| struct Bar<T>(T); | |
| // { dg-warning "struct is never constructed" "" { target *-*-* } .-1 } | |
| impl<T> Foo<[T]> for Bar<usize> { | |
| type Output = [T]; | |
| fn test(self, slice: &[T]) -> &[T] { | |
| slice | |
| } | |
| } |