author Nathan Froyd <>
Tue, 27 Mar 2012 11:55:54 -0400
changeset 90571 378f5363558939b964c41cdc30c3e26d3d241fae
parent 86721 8eef38643cebd4e8aec82a933b10627d18385aa4
child 91263 8a7965116a330f482644390ad5477d85d9fc85e4
permissions -rw-r--r--
Bug 739635 - fix -Wunused-but-set-variable warnings in gfx/thebes/; r=jrmuizel

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 * vim: set ts=8 sw=4 et tw=99 ft=cpp:
 * ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at:
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 * The Original Code is Mozilla Code.
 * The Initial Developer of the Original Code is
 *   The Mozilla Foundation
 * Portions created by the Initial Developer are Copyright (C) 2012
 * the Initial Developer. All Rights Reserved.
 * Contributor(s):
 *   Mike Hommey <>
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 * ***** END LICENSE BLOCK ***** */

#include "mozilla/Attributes.h"
#include "mozilla/Types.h"

#include <cstdio>
#include <cstdlib>
#ifndef WIN32
#include <signal.h>

/* Implementations of runtime and static assertion macros for C and C++. */

extern "C" {

   * We write 123 here so that the machine code for this function is
   * unique. Otherwise the linker, trying to be smart, might use the
   * same code for MOZ_Crash and for some other function. That
   * messes up the signature in minidumps.

#if defined(WIN32)
   * We used to call DebugBreak() on Windows, but amazingly, it causes
   * the MSVS 2010 debugger not to be able to recover a call stack.
  *((volatile int *) NULL) = 123;
#elif defined(__APPLE__)
   * On Mac OS X, Breakpad ignores signals. Only real Mach exceptions are
   * trapped.
  *((volatile int *) NULL) = 123;  /* To continue from here in GDB: "return" then "continue". */
  raise(SIGABRT);  /* In case above statement gets nixed by the optimizer. */
  raise(SIGABRT);  /* To continue from here in GDB: "signal 0". */

MOZ_Assert(const char* s, const char* file, int ln)
  fprintf(stderr, "Assertion failure: %s, at %s:%d\n", s, file, ln);