src/test/auxiliary/issue_8401.rs

   1 // Copyright 2013 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 // for this issue, this code must be built in a library
  12
  13 use std::mem;
  14
  15 trait A {
  16     fn dummy(&self) { }
  17 }
  18 struct B;
  19 impl A for B {}
  20
  21 fn bar<T>(_: &mut A, _: &T) {}
  22
  23 fn foo<T>(t: &T) {
  24     let b = B;
  25     bar(unsafe { mem::transmute(&b as &A) }, t)
  26 }
  27