disable unittests under ASAN that use memory crashes

There are a bunch of tests that use invalid memory acesses (on purpose)
to trigger a crash so that we can detect things are dumped correctly.
When we run under ASAN, it catches those accesses and the breaks the
testing flow.

For now, use the existing ADDRESS_SANITIZER symbol to disable more tests.
Ideally we'd use a compile-time attribute to disable ASAN on a few funcs,
but that seems to be broken atm.

BUG=chromium:293519
BUG=chromium:304575
TEST=ran unittests under ASAN and they now pass
TEST=ran unittests w/out asan/clang and they still pass
R=benchan@chromium.org

Review URL: https://breakpad.appspot.com/884002

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1255 4c0a9323-5329-0410-9bdc-e9ce6186880e

src/breakpad_googletest_includes.h

@@ -33,4 +33,25 @@
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/include/gmock/gmock.h"
 
+// If AddressSanitizer is used, NULL pointer dereferences generate SIGILL
+// (illegal instruction) instead of SIGSEGV (segmentation fault).  Also,
+// the number of memory regions differs, so there is no point in running
+// this test if AddressSanitizer is used.
+//
+// Ideally we'd use this attribute to disable ASAN on a per-func basis,
+// but this doesn't seem to actually work, and it's changed names over
+// time.  So just stick with disabling the actual tests.
+// http://crbug.com/304575
+//#define NO_ASAN __attribute__((no_sanitize_address))
+#if defined(__clang__) && defined(__has_feature)
+// Have to keep this check sep from above as newer gcc will barf on it.
+# if __has_feature(address_sanitizer)
+#  define ADDRESS_SANITIZER
+# endif
+#elif defined(__GNUC__) && defined(__SANITIZE_ADDRESS__)
+# define ADDRESS_SANITIZER
+#else
+# undef ADDRESS_SANITIZER
+#endif
+
 #endif  // BREAKPAD_GOOGLETEST_INCLUDES_H__

src/client/linux/handler/exception_handler_unittest.cc

@@ -191,6 +191,8 @@ static bool DoneCallback(const MinidumpDescriptor& descriptor,
   return true;
 }
 
+#ifndef ADDRESS_SANITIZER
+
 void ChildCrash(bool use_fd) {
   AutoTempDir temp_dir;
   int fds[2] = {0};
@@ -242,6 +244,8 @@ TEST(ExceptionHandlerTest, ChildCrashWithFD) {
   ASSERT_NO_FATAL_FAILURE(ChildCrash(true));
 }
 
+#endif  // !ADDRESS_SANITIZER
+
 static bool DoneCallbackReturnFalse(const MinidumpDescriptor& descriptor,
                                     void* context,
                                     bool succeeded) {
@@ -283,6 +287,8 @@ static bool InstallRaiseSIGKILL() {
   return sigaction(SIGSEGV, &sa, NULL) != -1;
 }
 
+#ifndef ADDRESS_SANITIZER
+
 static void CrashWithCallbacks(ExceptionHandler::FilterCallback filter,
                                ExceptionHandler::MinidumpCallback done,
                                string path) {
@@ -450,6 +456,8 @@ TEST(ExceptionHandlerTest, StackedHandlersUnhandledToBottom) {
   ASSERT_NO_FATAL_FAILURE(WaitForProcessToTerminate(child, SIGKILL));
 }
 
+#endif  // !ADDRESS_SANITIZER
+
 const unsigned char kIllegalInstruction[] = {
 #if defined(__mips__)
   // mfc2 zero,Impl - usually illegal in userspace.
@@ -731,10 +739,6 @@ TEST(ExceptionHandlerTest, InstructionPointerMemoryMaxBound) {
   unlink(minidump_path.c_str());
 }
 
-// If AddressSanitizer is used, NULL pointer dereferences generate SIGILL
-// (illegal instruction) instead of SIGSEGV (segmentation fault).  Also,
-// the number of memory regions differs, so there is no point in running
-// this test if AddressSanitizer is used.
 #ifndef ADDRESS_SANITIZER
 
 // Ensure that an extra memory block doesn't get added when the instruction
@@ -781,6 +785,7 @@ TEST(ExceptionHandlerTest, InstructionPointerMemoryNullPointer) {
 
   unlink(minidump_path.c_str());
 }
+
 #endif  // !ADDRESS_SANITIZER
 
 // Test that anonymous memory maps can be annotated with names and IDs.
@@ -902,6 +907,8 @@ CrashHandler(const void* crash_context, size_t crash_context_size,
   return true;
 }
 
+#ifndef ADDRESS_SANITIZER
+
 TEST(ExceptionHandlerTest, ExternalDumper) {
   int fds[2];
   ASSERT_NE(socketpair(AF_UNIX, SOCK_DGRAM, 0, fds), -1);
@@ -974,6 +981,8 @@ TEST(ExceptionHandlerTest, ExternalDumper) {
   unlink(templ.c_str());
 }
 
+#endif  // !ADDRESS_SANITIZER
+
 TEST(ExceptionHandlerTest, WriteMinidumpExceptionStream) {
   AutoTempDir temp_dir;
   ExceptionHandler handler(MinidumpDescriptor(temp_dir.path()), NULL, NULL,

src/client/windows/unittests/exception_handler_death_test.cc

@@ -307,6 +307,8 @@ wstring find_minidump_in_directory(const wstring &directory) {
   return filename;
 }
 
+#ifndef ADDRESS_SANITIZER
+
 TEST_F(ExceptionHandlerDeathTest, InstructionPointerMemory) {
   ASSERT_TRUE(DoesPathExist(temp_path_));
   scoped_ptr<google_breakpad::ExceptionHandler> exc(
@@ -575,4 +577,6 @@ TEST_F(ExceptionHandlerDeathTest, InstructionPointerMemoryMaxBound) {
   DeleteFileW(minidump_filename_wide.c_str());
 }
 
+#endif  // !ADDRESS_SANITIZER
+
 }  // namespace