vsnprintf-chk.c revision 169695
1234285Sdim/* Checking vsnprintf. 2234285Sdim Copyright (C) 2005 Free Software Foundation, Inc. 3234285Sdim 4234285SdimThis file is part of GCC. 5234285Sdim 6234285SdimGCC is free software; you can redistribute it and/or modify it under 7234285Sdimthe terms of the GNU General Public License as published by the Free 8234285SdimSoftware Foundation; either version 2, or (at your option) any later 9234285Sdimversion. 10234285Sdim 11234285SdimIn addition to the permissions in the GNU General Public License, the 12234285SdimFree Software Foundation gives you unlimited permission to link the 13234285Sdimcompiled version of this file into combinations with other programs, 14234285Sdimand to distribute those combinations without any restriction coming 15234285Sdimfrom the use of this file. (The General Public License restrictions 16234285Sdimdo apply in other respects; for example, they cover modification of 17234285Sdimthe file, and distribution when not linked into a combine 18234285Sdimexecutable.) 19234285Sdim 20234285SdimGCC is distributed in the hope that it will be useful, but WITHOUT ANY 21234285SdimWARRANTY; without even the implied warranty of MERCHANTABILITY or 22234285SdimFITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 23234285Sdimfor more details. 24234285Sdim 25234285SdimYou should have received a copy of the GNU General Public License 26234285Sdimalong with GCC; see the file COPYING. If not, write to the Free 27234285SdimSoftware Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 28234285Sdim02110-1301, USA. */ 29234285Sdim 30234285Sdim/* As a special exception, if you link this library with files compiled with 31234285Sdim GCC to produce an executable, this does not cause the resulting executable 32234285Sdim to be covered by the GNU General Public License. This exception does not 33234285Sdim however invalidate any other reasons why the executable file might be 34234285Sdim covered by the GNU General Public License. */ 35234285Sdim 36234285Sdim#include "config.h" 37234285Sdim#include <ssp/ssp.h> 38234285Sdim#include <stdarg.h> 39243830Sdim#ifdef HAVE_STDIO_H 40243830Sdim# include <stdio.h> 41243830Sdim#endif 42251662Sdim 43251662Sdimextern void __chk_fail (void) __attribute__((__noreturn__)); 44251662Sdim 45234285Sdim#ifdef HAVE_USABLE_VSNPRINTF 46234285Sdimint 47234285Sdim__vsnprintf_chk (char *s, size_t n, int flags __attribute__((unused)), 48234285Sdim size_t slen, const char *format, va_list arg) 49234285Sdim{ 50234285Sdim if (n > slen) 51234285Sdim __chk_fail (); 52234285Sdim 53234285Sdim return vsnprintf (s, n, format, arg); 54234285Sdim} 55#endif 56