1  /* Print output of stream to given obstack.
       2     Copyright (C) 2018-2023 Free Software Foundation, Inc.
       3     This file is part of the GNU C Library.
       4  
       5     The GNU C Library is free software; you can redistribute it and/or
       6     modify it under the terms of the GNU Lesser General Public
       7     License as published by the Free Software Foundation; either
       8     version 2.1 of the License, or (at your option) any later version.
       9  
      10     The GNU C Library is distributed in the hope that it will be useful,
      11     but WITHOUT ANY WARRANTY; without even the implied warranty of
      12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      13     Lesser General Public License for more details.
      14  
      15     You should have received a copy of the GNU Lesser General Public
      16     License along with the GNU C Library; if not, see
      17     <https://www.gnu.org/licenses/>.  */
      18  
      19  #include <libio/libioP.h>
      20  
      21  
      22  int
      23  __obstack_vprintf_chk (struct obstack *obstack, int flag, const char *format,
      24  		       va_list ap)
      25  {
      26    /* For flag > 0 (i.e. __USE_FORTIFY_LEVEL > 1) request that %n
      27       can only come from read-only format strings.  */
      28    unsigned int mode = (flag > 0) ? PRINTF_FORTIFY : 0;
      29  
      30    return __obstack_vprintf_internal (obstack, format, ap, mode);
      31  }