src/test/run-fail/too-much-recursion-unwinding.rs

   1 // Copyright 2012-2014 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 // ignore-test leaks
  12 // error-pattern:ran out of stack
  13
  14 // Test that the thread panicks after hitting the recursion limit
  15 // during unwinding
  16
  17 fn recurse() {
  18     println!("don't optimize me out");
  19     recurse();
  20 }
  21
  22 struct r {
  23     recursed: *mut bool,
  24 }
  25
  26 impl Drop for r {
  27     fn drop(&mut self) {
  28         unsafe {
  29             if !*(self.recursed) {
  30                 *(self.recursed) = true;
  31                 recurse();
  32             }
  33         }
  34     }
  35 }
  36
  37 fn r(recursed: *mut bool) -> r {
  38     r { recursed: recursed }
  39 }
  40
  41 fn main() {
  42     let mut recursed = false;
  43     let _r = r(&mut recursed);
  44     recurse();
  45 }