stdio-common/tst-sprintf.c

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