debug/warning-nop.c

   1 /* Dummy nop functions to elicit link-time warnings.
   2    Copyright (C) 2005 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #include <sys/cdefs.h>
  21
  22 static void
  23 nop (void)
  24 {
  25 }
  26
  27 /* Don't insert any other #include's before this #undef!  */
  28
  29 #undef __warndecl
  30 #define __warndecl(name, msg) \
  31   extern void name (void) __attribute__ ((alias ("nop"))) attribute_hidden; \
  32   link_warning (name, msg)
  33
  34 #undef  __USE_FORTIFY_LEVEL
  35 #define __USE_FORTIFY_LEVEL 99
  36
  37 /* Following here we need an #include for each public header file
  38    that uses __warndecl.  */
  39
  40 /* Define away to avoid warnings with compilers that do not have these
  41    builtins.  */
  42 #define __builtin___memcpy_chk(dest, src, len, bos) NULL
  43 #define __builtin___memmove_chk(dest, src, len, bos) NULL
  44 #define __builtin___mempcpy_chk(dest, src, len, bos) NULL
  45 #define __builtin___memset_chk(dest, ch, len, bos) NULL
  46 #define __builtin___stpcpy_chk(dest, src, bos) NULL
  47 #define __builtin___strcat_chk(dest, src, bos) NULL
  48 #define __builtin___strcpy_chk(dest, src, bos) NULL
  49 #define __builtin___strncat_chk(dest, src, len, bos) NULL
  50 #define __builtin___strncpy_chk(dest, src, len, bos) NULL
  51 #define __builtin_object_size(bos, level) 0
  52
  53 #include <string.h>