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[thirdparty/glibc.git] / debug / obprintf_chk.c

/* Print output of stream to given obstack.
   Copyright (C) 1996-2019 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library 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
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <https://www.gnu.org/licenses/>.  */

#include <libio/libioP.h>
#include <stdarg.h>


int
__obstack_printf_chk (struct obstack *obstack, int flag, const char *format,
		      ...)
{
  /* For flag > 0 (i.e. __USE_FORTIFY_LEVEL > 1) request that %n
     can only come from read-only format strings.  */
  unsigned int mode = (flag > 0) ? PRINTF_FORTIFY : 0;
  va_list ap;
  int ret;

  va_start (ap, format);
  ret = __obstack_vprintf_internal (obstack, format, ap, mode);
  va_end (ap);

  return ret;
}