src/test/compile-fail/specialization/defaultimpl/validation.rs

   1 // Copyright 2017 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11 #![feature(optin_builtin_traits)]
  12 #![feature(specialization)]
  13
  14 struct S;
  15 struct Z;
  16
  17 default impl S {} //~ ERROR inherent impls cannot be default
  18
  19 default unsafe impl Send for S {} //~ ERROR impls of auto traits cannot be default
  20 default impl !Send for Z {} //~ ERROR impls of auto traits cannot be default
  21
  22 trait Tr {}
  23 default impl !Tr for S {} //~ ERROR negative impls are only allowed for auto traits