stdio-common/tst-sprintf.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <string.h>
   4
   5
   6 int
   7 main (void)
   8 {
   9   char buf[100];
  10   int result = 0;
  11
  12   if (sprintf (buf, "%.0ls", L"foo") != 0
  13       || strlen (buf) != 0)
  14     {
  15       puts ("sprintf (buf, \"%.0ls\", L\"foo\") produced some output");
  16       result = 1;
  17     }
  18
  19 #define SIZE (1024*70000)
  20 #define STR(x) #x
  21
  22   char *dst = malloc (SIZE + 1);
  23
  24   if (dst == NULL)
  25     {
  26       puts ("memory allocation failure");
  27       result = 1;
  28     }
  29   else
  30     {
  31       sprintf (dst, "%*s", SIZE, "");
  32       if (strnlen (dst, SIZE + 1) != SIZE)
  33         {
  34           puts ("sprintf (dst, \"%*s\", " STR(SIZE) ", \"\") did not produce enough output");
  35           result = 1;
  36         }
  37       free (dst);
  38     }
  39
  40   if (sprintf (buf, "%1$d%3$.*2$s%4$d", 7, 67108863, "x", 8) != 3
  41       || strcmp (buf, "7x8") != 0)
  42     {
  43       printf ("sprintf (buf, \"%%1$d%%3$.*2$s%%4$d\", 7, 67108863, \"x\", 8) produced `%s' output", buf);
  44       result = 1;
  45     }
  46
  47   if (sprintf (buf, "%67108863.16\"%d", 7) != 14
  48       || strcmp (buf, "%67108863.16\"7") != 0)
  49     {
  50       printf ("sprintf (buf, \"%%67108863.16\\\"%%d\", 7) produced `%s' output", buf);
  51       result = 1;
  52     }
  53
  54   if (sprintf (buf, "%*\"%d", 0x3ffffff, 7) != 11
  55       || strcmp (buf, "%67108863\"7") != 0)
  56     {
  57       printf ("sprintf (buf, \"%%*\\\"%%d\", 0x3ffffff, 7) produced `%s' output", buf);
  58       result = 1;
  59     }
  60
  61   return result;
  62 }