glibc/debug/warning-nop.c

/* Dummy nop functions to elicit link-time warnings.
   Copyright (C) 2005 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library 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
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#include <sys/cdefs.h>

static void
nop (void)
{
}

/* Don't insert any other #include's before this #undef!  */

#undef __warndecl
#define __warndecl(name, msg) \
  extern void name (void) __attribute__ ((alias ("nop"))) attribute_hidden; \
  link_warning (name, msg)

#undef	__USE_FORTIFY_LEVEL
#define __USE_FORTIFY_LEVEL 99

/* Following here we need an #include for each public header file
   that uses __warndecl.  */

/* Define away to avoid warnings with compilers that do not have these
   builtins.  */
#define __builtin___memcpy_chk(dest, src, len, bos) NULL
#define __builtin___memmove_chk(dest, src, len, bos) NULL
#define __builtin___mempcpy_chk(dest, src, len, bos) NULL
#define __builtin___memset_chk(dest, ch, len, bos) NULL
#define __builtin___stpcpy_chk(dest, src, bos) NULL
#define __builtin___strcat_chk(dest, src, bos) NULL
#define __builtin___strcpy_chk(dest, src, bos) NULL
#define __builtin___strncat_chk(dest, src, len, bos) NULL
#define __builtin___strncpy_chk(dest, src, len, bos) NULL
#define __builtin_object_size(bos, level) 0

#include <string.h>