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// Regression test for
// https://code.google.com/p/address-sanitizer/issues/detail?id=180
// RUN: %clangxx_asan -O0 %s -o %t && ASAN_OPTIONS=allow_user_segv_handler=true not %t 2>&1 | FileCheck %s
// RUN: %clangxx_asan -O2 %s -o %t && ASAN_OPTIONS=allow_user_segv_handler=true not %t 2>&1 | FileCheck %s
#include <signal.h>
#include <stdio.h>
struct sigaction user_sigaction;
struct sigaction original_sigaction;
void User_OnSIGSEGV(int signum, siginfo_t *siginfo, void *context) {
fprintf(stderr, "User sigaction called\n");
if (original_sigaction.sa_flags | SA_SIGINFO)
original_sigaction.sa_sigaction(signum, siginfo, context);
else
original_sigaction.sa_handler(signum);
}
int DoSEGV() {
volatile int *x = 0;
return *x;
}
int main() {
user_sigaction.sa_sigaction = User_OnSIGSEGV;
user_sigaction.sa_flags = SA_SIGINFO;
#if defined(__APPLE__) && !defined(__LP64__)
// On 32-bit Darwin KERN_PROTECTION_FAILURE (SIGBUS) is delivered.
int signum = SIGBUS;
#else
// On 64-bit Darwin KERN_INVALID_ADDRESS (SIGSEGV) is delivered.
// On Linux SIGSEGV is delivered as well.
int signum = SIGSEGV;
#endif
if (sigaction(signum, &user_sigaction, &original_sigaction)) {
perror("sigaction");
return 1;
}
fprintf(stderr, "User sigaction installed\n");
return DoSEGV();
}
// CHECK: User sigaction installed
// CHECK-NEXT: User sigaction called
// CHECK-NEXT: ASAN:SIGSEGV
// CHECK: AddressSanitizer: SEGV on unknown address
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