Ensure the OSX crash catcher does not trigger on SIGABRT when disabled.

base/mac/os_crash_dumps.cc

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/mac/os_crash_dumps.h"
 
 #include <signal.h>
 #include <unistd.h>
 
 #include "base/basictypes.h"
@@ skipping 12 matching lines @@
 }
 
 }  // namespace
 
 void DisableOSCrashDumps() {
   // These are the POSIX signals corresponding to the Mach exceptions that
   // Apple Crash Reporter handles.  See ux_exception() in xnu's
   // bsd/uxkern/ux_exception.c and machine_exception() in xnu's
   // bsd/dev/*/unix_signal.c.
   const int signals_to_intercept[] = {
+    // Hardware faults
     SIGILL,   // EXC_BAD_INSTRUCTION
     SIGTRAP,  // EXC_BREAKPOINT
     SIGFPE,   // EXC_ARITHMETIC
     SIGBUS,   // EXC_BAD_ACCESS
-    SIGSEGV   // EXC_BAD_ACCESS
+    SIGSEGV,  // EXC_BAD_ACCESS
+    // Not a hardware fault
+    SIGABRT
   };
 
   // For all these signals, just wire things up so we exit immediately.
   for (size_t i = 0; i < arraysize(signals_to_intercept); ++i) {
     struct sigaction act = {};
     act.sa_handler = ExitSignalHandler;
 
     // It is better to allow the signal handler to run on the stack
     // registered with sigaltstack(), if one is present.
     act.sa_flags = SA_ONSTACK;
 
     if (sigemptyset(&act.sa_mask) != 0)
       DPLOG(FATAL) << "sigemptyset() failed";
     if (sigaction(signals_to_intercept[i], &act, NULL) != 0)
       DPLOG(FATAL) << "sigaction() failed";
   }
 }
 
 }  // namespace mac
 }  // namespace base