src/test/compile-fail/coherence_copy_like_err_tuple.rs

   1 // Copyright 2015 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 // Test that we are able to introduce a negative constraint that
  12 // `MyType: !MyTrait` along with other "fundamental" wrappers.
  13
  14 // aux-build:coherence_copy_like_lib.rs
  15
  16 extern crate coherence_copy_like_lib as lib;
  17
  18 struct MyType { x: i32 }
  19
  20 trait MyTrait { }
  21 impl<T: lib::MyCopy> MyTrait for T { }
  22
  23 // Tuples are not fundamental, therefore this would require that
  24 //
  25 //     (MyType,): !MyTrait
  26 //
  27 // which we cannot approve.
  28 impl MyTrait for (MyType,) { } //~ ERROR E0119
  29
  30 fn main() { }