Print a backtrace when a test binary crashes.

base/test_suite.h

 // Copyright (c) 2006-2008 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.
 
 #ifndef BASE_TEST_SUITE_H_
 #define BASE_TEST_SUITE_H_
 
 // Defines a basic test suite framework for running gtest based tests.  You can
 // instantiate this class in your main function and call its Run method to run
 // any gtest based tests that are linked into your executable.
 
 #include "base/at_exit.h"
 #include "base/base_paths.h"
 #include "base/command_line.h"
 #include "base/debug_on_start.h"
+#include "base/debug_util.h"
 #include "base/file_path.h"
 #include "base/icu_util.h"
 #include "base/logging.h"
 #include "base/multiprocess_test.h"
 #include "base/scoped_nsautorelease_pool.h"
 #include "base/time.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/multiprocess_func_list.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #endif
 
 #if defined(OS_POSIX)
 #include <signal.h>
 #endif
 
 #if defined(OS_LINUX)
 #include <gtk/gtk.h>
 #endif
 
+#if defined(OS_POSIX)
+static void TestSuiteCrashHandler(int signal) {
+  StackTrace().PrintBacktrace();

[agl, 2009/09/03 17:36:33]

Note that, if the crash happens at certain points, this will probably fail or
deadlock. (e.g. a crash in malloc which is still holding the heap lock).
However, it'll work for 99% of cases and that's probably good enough.

+  _exit(1);
+}
+#endif
+
 class TestSuite {
  public:
   TestSuite(int argc, char** argv) {
     base::EnableTerminationOnHeapCorruption();
     CommandLine::Init(argc, argv);
     testing::InitGoogleTest(&argc, argv);
 #if defined(OS_LINUX)
     g_thread_init(NULL);
     gtk_init_check(&argc, &argv);
 #endif
@@ skipping 70 matching lines @@
 
 #if defined(OS_POSIX)
     // When running in an application, our code typically expects SIGPIPE
     // to be ignored.  Therefore, when testing that same code, it should run
     // with SIGPIPE ignored as well.
     struct sigaction action;
     action.sa_handler = SIG_IGN;
     action.sa_flags = 0;
     sigemptyset(&action.sa_mask);
     CHECK(sigaction(SIGPIPE, &action, NULL) == 0);
+
+    // TODO(phajdan.jr): Catch other crashy signals, like SIGABRT.
+    CHECK(signal(SIGSEGV, &TestSuiteCrashHandler) != SIG_ERR);
+    CHECK(signal(SIGILL, &TestSuiteCrashHandler) != SIG_ERR);
+    CHECK(signal(SIGBUS, &TestSuiteCrashHandler) != SIG_ERR);

[agl, 2009/09/03 17:36:33]

SIGFPE is probably good too.

 #endif  // OS_POSIX
 
 #if defined(OS_WIN)
     // For unit tests we turn on the high resolution timer and disable
     // base::Time's use of SystemMonitor. Tests create and destroy the message
     // loop, which causes a crash with SystemMonitor (http://crbug.com/12187).
     base::Time::EnableHiResClockForTests();
 
     // In some cases, we do not want to see standard error dialogs.
     if (!IsDebuggerPresent() &&
@@ skipping 12 matching lines @@
 
   virtual void Shutdown() {
   }
 
   // Make sure that we setup an AtExitManager so Singleton objects will be
   // destroyed.
   base::AtExitManager at_exit_manager_;
 };
 
 #endif  // BASE_TEST_SUITE_H_