#include <pthread.h>

void *thr_routine(void *arg)
{
	sigset_t sigset;

	printf("Sleeping...\n");
	sleep(2);
	printf("Trying to generate SIGSEGV...\n");
	*(char *)1 = 'a';
}

void handler(int sig)
{
	struct sigaction act;
	sigset_t sigset;

	printf("Writing core file...\n");
	sigemptyset(&sigset);
	sigaddset(&sigset, SIGSEGV);
	pthread_sigmask(SIG_UNBLOCK, &sigset, NULL);
	signal(sig, SIG_DFL);
	raise(SIGSEGV);
	//pthread_kill(pthread_self(), SIGSEGV);
	printf("Shouldn't get here!\n");
}

int main()
{
	pthread_t td;
	pthread_attr_t attr;
	struct sigaction act;
	sigset_t sigmask;

	sigemptyset(&act.sa_mask);
	act.sa_handler = handler;
	act.sa_flags = 0;
	sigaction(SIGSEGV, &act, NULL);
	sigfillset(&sigmask);
	pthread_attr_init(&attr);
//	pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM);
	pthread_create(&td, &attr, thr_routine, NULL);
	pthread_sigmask(SIG_SETMASK, &sigmask, NULL);
	pthread_join(td, NULL);
	return (0);
}