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test-snprintf.c

/* -*- buffer-read-only: t -*- vi: set ro: */
/* DO NOT EDIT! GENERATED AUTOMATICALLY! */
#line 1
/* Test of snprintf() function.
   Copyright (C) 2007-2008 Free Software Foundation, Inc.

   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */

#include <config.h>

#include <stdio.h>

#include <stdlib.h>
#include <string.h>

#define ASSERT(expr) \
  do                                                       \
    {                                                      \
      if (!(expr))                                               \
        {                                                  \
          fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
          fflush (stderr);                                       \
          abort ();                                              \
        }                                                  \
    }                                                      \
  while (0)

int
main (int argc, char *argv[])
{
  char buf[8];
  int size;
  int retval;

  for (size = 0; size <= 8; size++)
    {
      memcpy (buf, "DEADBEEF", 8);
      retval = snprintf (buf, size, "%d", 12345);
      if (size < 6)
      {
#if CHECK_SNPRINTF_POSIX
        ASSERT (retval < 0 || retval >= size);
#endif
        if (size > 0)
          {
            ASSERT (memcmp (buf, "12345", size - 1) == 0);
            ASSERT (buf[size - 1] == '\0' || buf[size - 1] == '0' + size);
          }
#if !CHECK_SNPRINTF_POSIX
        if (size > 0)
#endif
          ASSERT (memcmp (buf + size, "DEADBEEF" + size, 8 - size) == 0);
      }
      else
      {
        ASSERT (retval == 5);
        ASSERT (memcmp (buf, "12345\0EF", 8) == 0);
      }
    }

  return 0;
}

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