src/test/compile-fail/associated-types-in-ambiguous-context.rs

   1 // Copyright 2014 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 trait Get {
  12     type Value;
  13     fn get(&self) -> <Self as Get>::Value;
  14 }
  15
  16 fn get<T:Get,U:Get>(x: T, y: U) -> Get::Value {}
  17 //~^ ERROR ambiguous associated type
  18 //~| NOTE ambiguous associated type
  19 //~| NOTE specify the type using the syntax `<Type as Get>::Value`
  20
  21 trait Grab {
  22     type Value;
  23     fn grab(&self) -> Grab::Value;
  24     //~^ ERROR ambiguous associated type
  25     //~| NOTE ambiguous associated type
  26     //~| NOTE specify the type using the syntax `<Type as Grab>::Value`
  27 }
  28
  29 type X = std::ops::Deref::Target;
  30 //~^ ERROR ambiguous associated type
  31 //~| NOTE ambiguous associated type
  32 //~| NOTE specify the type using the syntax `<Type as std::ops::Deref>::Target`
  33
  34 fn main() {
  35 }