src/test/compile-fail/issue-2611-4.rs

   1 // Copyright 2012 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 // Tests that an impl method's bounds aren't *more* restrictive
  12 // than the trait method it's implementing
  13
  14 trait A {
  15   fn b<C,D>(&self, x: C) -> C;
  16 }
  17
  18 struct E {
  19  f: isize
  20 }
  21
  22 impl A for E {
  23     fn b<F: Sync, G>(&self, _x: F) -> F { panic!() }
  24     //~^ ERROR `F: std::marker::Sync` appears on the impl method
  25 }
  26
  27 fn main() {}