src/test/ui/specialization-feature-gate-overlap.rs


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// Copyright 2015 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.

// Check that writing an overlapping impl is not allow unless specialization is ungated.

// gate-test-specialization

trait Foo {
    fn foo(&self);
}

impl<T> Foo for T {
    fn foo(&self) {}
}

impl Foo for u8 { //~ ERROR E0119
    fn foo(&self) {}
}

fn main() {}