/* Checking snprintf. Copyright (C) 2005-2018 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 __snprintf_chk (char *s, size_t n, int flags __attribute__((unused)), size_t slen, const char *format, ...) { va_list arg; int done; if (n > slen) __chk_fail (); va_start (arg, format); done = vsnprintf (s, n, format, arg); va_end (arg); return done; } #endif