File: argument-types.rs

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#![feature(type_alias_impl_trait)]
#![allow(dead_code)]
//@ check-pass

mod foo {
    use std::fmt::Debug;

    pub type Foo = impl Debug;

    fn foo1(mut x: Foo) {
        x = 22_u32;
    }

    pub fn foo_value() -> Foo {
        11_u32
    }
}
use foo::*;

fn foo2(mut x: Foo) {
    // no constraint on x
}

fn foo3(x: Foo) {
    println!("{:?}", x);
}

fn main() {
    foo3(foo_value());
}