src/test/compile-fail/typeck-default-trait-impl-supertrait.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 when a `..` impl applies, we also check that any
  12 // supertrait conditions are met.
  13
  14 #![feature(optin_builtin_traits)]
  15
  16 trait NotImplemented { }
  17
  18 trait MyTrait : NotImplemented {}
  19
  20 impl MyTrait for .. {}
  21
  22 fn foo<T:MyTrait>() { bar::<T>() }
  23
  24 fn bar<T:NotImplemented>() { }
  25
  26 fn main() {
  27     foo::<i32>(); //~ ERROR `i32: NotImplemented` is not satisfied
  28     bar::<i64>(); //~ ERROR `i64: NotImplemented` is not satisfied
  29 }