stdio-common/bug22.c

   1 /* BZ #5424 */
   2 #include <stdio.h>
   3 #include <errno.h>
   4
   5 /* INT_MAX + 1 */
   6 #define N 2147483648
   7
   8 /* (INT_MAX / 2) + 2 */
   9 #define N2 1073741825
  10
  11 /* INT_MAX - 3 */
  12 #define N3 2147483644
  13
  14 #define STRINGIFY(S) #S
  15 #define MAKE_STR(S) STRINGIFY(S)
  16
  17 #define SN MAKE_STR(N)
  18 #define SN2 MAKE_STR(N2)
  19 #define SN3 MAKE_STR(N3)
  20
  21 static int
  22 do_test (void)
  23 {
  24   int ret;
  25
  26   FILE *fp = fopen ("/dev/null", "w");
  27   if (fp == NULL)
  28     {
  29       puts ("cannot open /dev/null");
  30       return 1;
  31     }
  32
  33   ret = fprintf (fp, "%" SN "d", 1);
  34   printf ("ret = %d\n", ret);
  35   if (ret != -1 || errno != EOVERFLOW)
  36           return 1;
  37
  38   ret = fprintf (fp, "%." SN "d", 1);
  39   printf ("ret = %d\n", ret);
  40   if (ret != -1 || errno != EOVERFLOW)
  41           return 1;
  42
  43   ret = fprintf (fp, "%." SN3 "d", 1);
  44   printf ("ret = %d\n", ret);
  45   if (ret != -1 || errno != EOVERFLOW)
  46           return 1;
  47
  48   ret = fprintf (fp, "%" SN2 "d%" SN2 "d", 1, 1);
  49   printf ("ret = %d\n", ret);
  50
  51   return ret != -1 || errno != EOVERFLOW;
  52 }
  53
  54 #define TIMEOUT 60
  55 #define TEST_FUNCTION do_test ()
  56 #include "../test-skeleton.c"