rust/src/test/compile-fail/coherence-blanket-conflicts-with-specific-multidispatch.rs

37 lines
946 B
Rust

// Copyright 2014 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.
use std::fmt::Debug;
use std::default::Default;
// Test that a blank impl for all T conflicts with an impl for some
// specific T, even when there are multiple type parameters involved.
trait MyTrait<T> {
fn get(&self) -> T;
}
impl<T> MyTrait<T> for T {
fn get(&self) -> T {
panic!()
}
}
#[derive(Clone)]
struct MyType {
dummy: usize
}
impl MyTrait<MyType> for MyType { //~ ERROR E0119
fn get(&self) -> usize { (*self).clone() }
}
fn main() { }