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