src/test/ui/run-pass/issues/issue-4252.rs

   1 // Copyright 2013-2014 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 // run-pass
  12 trait X {
  13     fn call<T: std::fmt::Debug>(&self, x: &T);
  14     fn default_method<T: std::fmt::Debug>(&self, x: &T) {
  15         println!("X::default_method {:?}", x);
  16     }
  17 }
  18
  19 #[derive(Debug)]
  20 struct Y(isize);
  21
  22 #[derive(Debug)]
  23 struct Z<T: X+std::fmt::Debug> {
  24     x: T
  25 }
  26
  27 impl X for Y {
  28     fn call<T: std::fmt::Debug>(&self, x: &T) {
  29         println!("X::call {:?} {:?}", self, x);
  30     }
  31 }
  32
  33 impl<T: X + std::fmt::Debug> Drop for Z<T> {
  34     fn drop(&mut self) {
  35         // These statements used to cause an ICE.
  36         self.x.call(self);
  37         self.x.default_method(self);
  38     }
  39 }
  40
  41 pub fn main() {
  42     let _z = Z {x: Y(42)};
  43 }