Mercurial > hg > CbC > CbC_gcc
diff libssp/vsprintf-chk.c @ 0:a06113de4d67
first commit
author | kent <kent@cr.ie.u-ryukyu.ac.jp> |
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date | Fri, 17 Jul 2009 14:47:48 +0900 |
parents | |
children | 04ced10e8804 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libssp/vsprintf-chk.c Fri Jul 17 14:47:48 2009 +0900 @@ -0,0 +1,63 @@ +/* Checking vsprintf. + Copyright (C) 2005, 2009 Free Software Foundation, Inc. + +This file is part of GCC. + +GCC 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, or (at your option) any later +version. + +In addition to the permissions in the GNU General Public License, the +Free Software Foundation gives you unlimited permission to link the +compiled version of this file into combinations with other programs, +and to distribute those combinations without any restriction coming +from the use of this file. (The General Public License restrictions +do apply in other respects; for example, they cover modification of +the file, and distribution when not linked into a combine +executable.) + +GCC 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. + +Under Section 7 of GPL version 3, you are granted additional +permissions described in the GCC Runtime Library Exception, version +3.1, as published by the Free Software Foundation. + +You should have received a copy of the GNU General Public License and +a copy of the GCC Runtime Library Exception along with this program; +see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +<http://www.gnu.org/licenses/>. */ + +#include "config.h" +#include <ssp/ssp.h> +#include <stdarg.h> +#ifdef HAVE_LIMITS_H +# include <limits.h> +#endif +#ifdef HAVE_STDIO_H +# include <stdio.h> +#endif + +extern void __chk_fail (void) __attribute__((__noreturn__)); + +#ifdef HAVE_USABLE_VSNPRINTF +int +__vsprintf_chk (char *s, int flags __attribute__((unused)), + size_t slen, const char *format, va_list arg) +{ + int done; + + if (slen > (size_t) INT_MAX) + done = vsprintf (s, format, arg); + else + { + done = vsnprintf (s, slen, format, arg); + if (done >= 0 && (size_t) done >= slen) + __chk_fail (); + } + return done; +} +#endif