stdio-common/tst-sprintf.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <locale.h>
   4 #include <string.h>
   5
   6
   7 static int
   8 do_test (void)
   9 {
  10   char buf[100];
  11   int result = 0;
  12
  13   if (sprintf (buf, "%.0ls", L"foo") != 0
  14       || strlen (buf) != 0)
  15     {
  16       puts ("sprintf (buf, \"%.0ls\", L\"foo\") produced some output");
  17       result = 1;
  18     }
  19
  20 #define SIZE (1024*70000)
  21 #define STR(x) #x
  22
  23   char *dst = malloc (SIZE + 1);
  24
  25   if (dst == NULL)
  26     {
  27       puts ("memory allocation failure");
  28       result = 1;
  29     }
  30   else
  31     {
  32       sprintf (dst, "%*s", SIZE, "");
  33       if (strnlen (dst, SIZE + 1) != SIZE)
  34         {
  35           puts ("sprintf (dst, \"%*s\", " STR(SIZE) ", \"\") did not produce enough output");
  36           result = 1;
  37         }
  38       free (dst);
  39     }
  40
  41   if (sprintf (buf, "%1$d%3$.*2$s%4$d", 7, 67108863, "x", 8) != 3
  42       || strcmp (buf, "7x8") != 0)
  43     {
  44       printf ("sprintf (buf, \"%%1$d%%3$.*2$s%%4$d\", 7, 67108863, \"x\", 8) produced `%s' output", buf);
  45       result = 1;
  46     }
  47
  48   /* We are testing a corner case of the sprintf format string here.  */
  49   DIAG_PUSH_NEEDS_COMMENT;
  50   DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wformat");
  51   int n = sprintf (buf, "%67108863.16\"%d", 7);
  52   DIAG_POP_NEEDS_COMMENT;
  53
  54   if (n != 14 || strcmp (buf, "%67108863.16\"7") != 0)
  55     {
  56       printf ("sprintf (buf, \"%%67108863.16\\\"%%d\", 7) produced `%s' output",
  57               buf);
  58       result = 1;
  59     }
  60
  61   /* We are testing a corner case of the sprintf format string here.  */
  62   DIAG_PUSH_NEEDS_COMMENT;
  63   DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wformat");
  64   n = sprintf (buf, "%*\"%d", 0x3ffffff, 7);
  65   DIAG_POP_NEEDS_COMMENT;
  66
  67   if (n != 11 || strcmp (buf, "%67108863\"7") != 0)
  68     {
  69       printf ("sprintf (buf, \"%%*\\\"%%d\", 0x3ffffff, 7) produced `%s' output", buf);
  70       result = 1;
  71     }
  72
  73   if (setlocale (LC_ALL, "de_DE.UTF-8") == NULL)
  74     {
  75       puts ("cannot set locale");
  76       result = 1;
  77     }
  78   else if (sprintf (buf, "%.8s\n", "Foo: \277") != 7
  79            || strcmp (buf, "Foo: \277\n") != 0)
  80     {
  81       printf ("sprintf (buf, \"%%.8s\\n\", \"Foo: \\277\") produced '%s' output\n", buf);
  82       result = 1;
  83     }
  84
  85   return result;
  86 }
  87
  88 #define TEST_FUNCTION do_test ()
  89 #include "../test-skeleton.c"