namespace {
const char kSEGVCrash[] = "AddressSanitizer: SEGV on unknown address";
-const char kOverriddenSigactionHandler[] = "Test sigaction handler\n";
-const char kOverriddenSignalHandler[] = "Test signal handler\n";
+const char kOverriddenHandler[] = "ASan signal handler has been overridden\n";
TEST(AddressSanitizer, WildAddressTest) {
char *c = (char*)0x123;
}
void my_sigaction_sighandler(int, siginfo_t*, void*) {
- fprintf(stderr, kOverriddenSigactionHandler);
+ fprintf(stderr, kOverriddenHandler);
exit(1);
}
void my_signal_sighandler(int signum) {
- fprintf(stderr, kOverriddenSignalHandler);
+ fprintf(stderr, kOverriddenHandler);
exit(1);
}
memset(&sigact, 0, sizeof(sigact));
sigact.sa_sigaction = my_sigaction_sighandler;
sigact.sa_flags = SA_SIGINFO;
- char *c = (char *)0x123;
-
- EXPECT_DEATH(*c = 0, kSEGVCrash);
-
- // ASan should allow to set sigaction()...
+ // ASan should silently ignore sigaction()...
EXPECT_EQ(0, sigaction(SIGSEGV, &sigact, 0));
#ifdef __APPLE__
EXPECT_EQ(0, sigaction(SIGBUS, &sigact, 0));
#endif
- EXPECT_DEATH(*c = 0, kOverriddenSigactionHandler);
-
+ char *c = (char*)0x123;
+ EXPECT_DEATH(*c = 0, kSEGVCrash);
// ... and signal().
- EXPECT_NE(SIG_ERR, signal(SIGSEGV, my_signal_sighandler));
- EXPECT_DEATH(*c = 0, kOverriddenSignalHandler);
+ EXPECT_EQ(0, signal(SIGSEGV, my_signal_sighandler));
+ EXPECT_DEATH(*c = 0, kSEGVCrash);
}
} // namespace
#endif
COMMON_FLAG(HandleSignalMode, handle_sigfpe, kHandleSignalYes,
COMMON_FLAG_HANDLE_SIGNAL_HELP(SIGFPE))
#undef COMMON_FLAG_HANDLE_SIGNAL_HELP
-COMMON_FLAG(bool, allow_user_segv_handler, true,
+COMMON_FLAG(bool, allow_user_segv_handler, false,
"If set, allows user to register a SEGV handler even if the tool "
"registers one.")
COMMON_FLAG(bool, use_sigaltstack, true,