src/test/compile-fail/specialization/issue-50452.rs


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// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

// compile-fail

#![feature(specialization)]

pub trait Foo {
    fn foo();
}

impl Foo for i32 {}
impl Foo for i64 {
    fn foo() {}
    //~^ERROR `foo` specializes an item from a parent `impl`
}
impl<T> Foo for T {
    fn foo() {}
}

fn main() {
    i32::foo();
    i64::foo();
    u8::foo();
}