tests/ui/delegation/target-expr-pass.rs

//@ run-pass

#![feature(fn_delegation)]

mod to_reuse {
    pub fn foo(x: i32) -> i32 { x }
    pub mod inner {}
}

reuse to_reuse::foo {{
    use self::to_reuse::foo;
    let x = foo(12);
    x + self
}}

trait Trait: Sized { //~ WARN trait `Trait` is never used
    fn by_value(self, x: i32) -> i32 { x }
    fn by_ref(&self, x: i32) -> i32 { x }
    fn by_mut_ref(&mut self, x: i32) -> i32 { x }
}

struct F; //~ WARN struct `F` is never constructed
impl Trait for F {}

struct S(F); //~ WARN struct `S` is never constructed
impl Trait for S {
    reuse <F as Trait>::* {
        #[allow(unused_imports)]
        use self::to_reuse::{foo, inner::{self}};
        let x = foo(12);
        assert_eq!(x, 12);
        self.0
    }
}

fn main() {
    assert_eq!(foo(12), 24);
}