// 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)] use std::marker::Send; enum TestE { A } struct MyType; struct NotSync; impl !Sync for NotSync {} unsafe impl Send for TestE {} unsafe impl Send for MyType {} unsafe impl Send for (MyType, MyType) {} //~^ ERROR builtin traits can only be implemented on structs or enums unsafe impl Send for &'static NotSync {} //~^ ERROR builtin traits can only be implemented on structs or enums unsafe impl Send for [MyType] {} //~^ ERROR builtin traits can only be implemented on structs or enums unsafe impl Send for &'static [NotSync] {} //~^ ERROR builtin traits can only be implemented on structs or enums //~^^ ERROR conflicting implementations for trait `core::marker::Send` fn is_send() {} fn main() { is_send::<(MyType, TestE)>(); }