Let's make a lot of threads!

pthread_test.c

// gcc -D_GNU_SOURCE=1 -std=c99 a.c
#include <sched.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>

int f(void *p) {
	sleep(2);
}

void main(void) {
	for(int i = 0; i < 32770; i++) {
		void *s = malloc(256); // stack size
		int r = clone(f, s, 0, NULL);
		if(r < 0) {
			printf("The number was: %d\n", i);
			perror(NULL);
			exit(0);
		}
	}
}