mirror of https://github.com/rust-lang/rust
30 lines
485 B
Rust
30 lines
485 B
Rust
//@ run-pass
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#![feature(fn_delegation)]
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#![allow(incomplete_features)]
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mod to_reuse {
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pub fn foo<T, U>(_: T, y: U) -> U { y }
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}
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trait Trait<T> {
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fn foo(&self, x: T) -> T { x }
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}
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struct F;
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impl<T> Trait<T> for F {}
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struct S<T>(F, T);
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impl<T, U> Trait<T> for S<U> {
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reuse to_reuse::foo { &self.0 }
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}
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impl<T> S<T> {
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reuse to_reuse::foo;
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}
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fn main() {
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let s = S(F, 42);
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assert_eq!(S::<i32>::foo(F, 1), 1);
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assert_eq!(<S<_> as Trait<_>>::foo(&s, 1), 1);
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}
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