src/test/compile-fail/intrinsic-return-address.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 #![allow(warnings)]
  12 #![feature(intrinsics)]
  13
  14 extern "rust-intrinsic" {
  15     fn return_address() -> *const u8;
  16 }
  17
  18 unsafe fn f() { let _ = return_address(); }
  19 //~^ ERROR invalid use of `return_address` intrinsic: function does not use out pointer
  20
  21 unsafe fn g() -> isize { let _ = return_address(); 0 }
  22 //~^ ERROR invalid use of `return_address` intrinsic: function does not use out pointer
  23
  24 fn main() {}