diff options
Diffstat (limited to 'libssp/vsnprintf-chk.c')
-rw-r--r-- | libssp/vsnprintf-chk.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/libssp/vsnprintf-chk.c b/libssp/vsnprintf-chk.c new file mode 100644 index 000000000..d7b4f64ab --- /dev/null +++ b/libssp/vsnprintf-chk.c @@ -0,0 +1,53 @@ +/* Checking vsnprintf. + 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_STDIO_H +# include <stdio.h> +#endif + +extern void __chk_fail (void) __attribute__((__noreturn__)); + +#ifdef HAVE_USABLE_VSNPRINTF +int +__vsnprintf_chk (char *s, size_t n, int flags __attribute__((unused)), + size_t slen, const char *format, va_list arg) +{ + if (n > slen) + __chk_fail (); + + return vsnprintf (s, n, format, arg); +} +#endif |