/*
 * Build:
 *	cc -std=c99 -pedantic -Wall -pthread -o testcase testcase.c
 *
 * Takes single argument: amount of extra thread stack usage, in bytes.
 * Uses 1 byte without an argument.
 * Returns 0 in case of success.
 * Crashes with SIGSEGV for "large" argument, 10000 is enough for 14.4
 * so exit status is 139 (decimal).
 */

#include <pthread.h>
#include <signal.h>
#include <stdlib.h>
#include <syslog.h>
#include <unistd.h>

void*
threadfunc (void *bloat)
{
	char		buf[*(int*)bloat];
	sigset_t	mask;

	sigfillset(&mask);
	pthread_sigmask(SIG_SETMASK, &mask, NULL);

	syslog(LOG_NOTICE, "new thread: %p bloat %d buf %p",
	    (void*)pthread_self(), *(int*)bloat, (void*)buf);
	return (NULL);
}

int
main (int argc, char** argv)
{
	pthread_t	thread;
        pthread_attr_t	pa;
	int		bloat;

	openlog("testcase", LOG_PERROR|LOG_PID, LOG_USER);
	bloat = 1;
        if (argc > 1)
	    bloat = atoi(argv[1]);
	syslog(LOG_NOTICE, "bloat set to %d", bloat);

        pthread_attr_init(&pa);
        pthread_attr_setstacksize(&pa, PTHREAD_STACK_MIN + 32768);
	pthread_attr_setdetachstate(&pa,PTHREAD_CREATE_DETACHED);
	pthread_create(&thread, &pa, threadfunc, &bloat);
	pthread_attr_destroy(&pa);

	usleep(12400);
	syslog(LOG_NOTICE, "main address: %p", (void*)pthread_self());
	return (0);
}