wcsmbs/tst-wcstof.c

   1 #define _GNU_SOURCE 1
   2 #include <wchar.h>
   3 #include <stdio.h>
   4 #include <string.h>
   5 #include <wctype.h>
   6 #include <libc-diag.h>
   7
   8 static int
   9 do_test (void)
  10 {
  11   int result = 0;
  12   char buf[100];
  13   wchar_t tmp[3];
  14   tmp[0] = '8';
  15   tmp[1] = '1';
  16   tmp[2] = 0;
  17
  18   /* GCC does not know the result of wcstof so cannot see that the
  19      snprintf output is not truncated.  */
  20   DIAG_PUSH_NEEDS_COMMENT;
  21 #if __GNUC_PREREQ (7, 0)
  22   DIAG_IGNORE_NEEDS_COMMENT (7.0, "-Wformat-truncation");
  23 #endif
  24   snprintf (buf, 100, "%S = %f", tmp, wcstof (tmp, NULL));
  25   DIAG_POP_NEEDS_COMMENT;
  26   printf ("\"%s\" -> %s\n", buf,
  27           strcmp (buf, "81 = 81.000000") == 0 ? "okay" : "buggy");
  28   result |= strcmp (buf, "81 = 81.000000") != 0;
  29
  30   return result;
  31 }
  32
  33 #include <support/test-driver.c>