1 #include <stdio.h>
2 #include <stdlib.h>
3 #include <string.h>
4 #include <sys/resource.h>
5 
6 #define LIMIT 1000000
7 
8 int
main(void)9 main (void)
10 {
11   struct rlimit lim;
12   getrlimit (RLIMIT_STACK, &lim);
13   lim.rlim_cur = 1048576;
14   setrlimit (RLIMIT_STACK, &lim);
15   char *fmtstr = malloc (4 * LIMIT + 1);
16   if (fmtstr == NULL)
17     abort ();
18   char *output = malloc (LIMIT + 1);
19   if (output == NULL)
20     abort ();
21   for (size_t i = 0; i < LIMIT; i++)
22     memcpy (fmtstr + 4 * i, "%1$d", 4);
23   fmtstr[4 * LIMIT] = '\0';
24   int ret = snprintf (output, LIMIT + 1, fmtstr, 0);
25   if (ret != LIMIT)
26     abort ();
27   for (size_t i = 0; i < LIMIT; i++)
28     if (output[i] != '0')
29       abort ();
30   return 0;
31 }
32