#include <sys/resource.h>
#include <signal.h>
#include <err.h>
#include <stdio.h>
#include <stdlib.h>

static void
user1(int s)
{
	fprintf(stderr, "%s\n", __func__);
	kill(0, SIGUSR2);
}

static void
user2(int s)
{
	fprintf(stderr, "%s\n", __func__);
	kill(0, SIGUSR1);
}

int
main(void)
{
	struct rlimit rl;
	if (getrlimit(RLIMIT_STACK, &rl) == -1)
		err(EXIT_FAILURE, "getrlimit");
	rl.rlim_cur = 1024 * 1024;
	if (setrlimit(RLIMIT_STACK, &rl) == -1)
		err(EXIT_FAILURE, "setrlimit");
	fprintf(stderr, "%s,%d\n", __func__, __LINE__);
	signal(SIGUSR1, user1);
	signal(SIGUSR2, user2);
	fprintf(stderr, "%s,%d\n", __func__, __LINE__);
	kill(0, SIGUSR1);
	fprintf(stderr, "%s,%d\n", __func__, __LINE__);
	return EXIT_SUCCESS;
}