mirror of
git://gcc.gnu.org/git/gcc.git
synced 2024-12-15 02:50:22 +08:00
64 lines
2.0 KiB
C
64 lines
2.0 KiB
C
/* 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
|