// 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 or the MIT license // , at your // option. This file may not be copied, modified, or distributed // except according to those terms. #![feature(optin_builtin_traits)] trait MyTrait { fn foo() {} } impl MyTrait for .. {} //~^ ERROR redundant default implementations of trait `MyTrait` impl MyTrait for .. {} trait MySafeTrait {} unsafe impl MySafeTrait for .. {} //~^ ERROR implementing the trait `MySafeTrait` is not unsafe unsafe trait MyUnsafeTrait {} impl MyUnsafeTrait for .. {} //~^ ERROR the trait `MyUnsafeTrait` requires an `unsafe impl` declaration fn main() {}