vprintf_chk.c 1.2 KB

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  1. /* Copyright (C) 1991-2019 Free Software Foundation, Inc.
  2. This file is part of the GNU C Library.
  3. The GNU C Library is free software; you can redistribute it and/or
  4. modify it under the terms of the GNU Lesser General Public
  5. License as published by the Free Software Foundation; either
  6. version 2.1 of the License, or (at your option) any later version.
  7. The GNU C Library is distributed in the hope that it will be useful,
  8. but WITHOUT ANY WARRANTY; without even the implied warranty of
  9. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  10. Lesser General Public License for more details.
  11. You should have received a copy of the GNU Lesser General Public
  12. License along with the GNU C Library; if not, see
  13. <http://www.gnu.org/licenses/>. */
  14. #include <libio/libioP.h>
  15. /* Write formatted output to stdout from the format string FORMAT. */
  16. int
  17. ___vprintf_chk (int flag, const char *format, va_list ap)
  18. {
  19. /* For flag > 0 (i.e. __USE_FORTIFY_LEVEL > 1) request that %n
  20. can only come from read-only format strings. */
  21. unsigned int mode = (flag > 0) ? PRINTF_FORTIFY : 0;
  22. return __vfprintf_internal (stdout, format, ap, mode);
  23. }
  24. ldbl_strong_alias (___vprintf_chk, __vprintf_chk)