/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- * vim: sw=4 ts=4 et : */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ #include "mozilla/mozalloc_abort.h" #ifdef MOZ_WIDGET_ANDROID # include "APKOpen.h" # include "dlfcn.h" #endif #include <stdio.h> #include "mozilla/Assertions.h" void mozalloc_abort(const char* const msg) { fputs(msg, stderr); fputs("\n", stderr); MOZ_CRASH(); } #if defined(XP_UNIX) && !defined(MOZ_ASAN) // Define abort() here, so that it is used instead of the system abort(). This // lets us control the behavior when aborting, in order to get better results // on *NIX platforms. See mozalloc_abort for details. // // For AddressSanitizer, we must not redefine system abort because the ASan // option "abort_on_error=1" calls abort() and therefore causes the following // call chain with our redefined abort: // // ASan -> abort() -> moz_abort() -> MOZ_CRASH() -> Segmentation fault // // That segmentation fault will be interpreted as another bug by ASan and as a // result, ASan will just exit(1) instead of aborting. extern "C" void abort(void) { const char* const msg = "Redirecting call to abort() to mozalloc_abort\n"; mozalloc_abort(msg); // We won't reach here because mozalloc_abort() is MOZ_NORETURN. But that // annotation isn't used on ARM (see mozalloc_abort.h for why) so we add a // redundant MOZ_CRASH() here to avoid a "'noreturn' function does return" // warning. MOZ_CRASH(); } #endif