strcpy.c 1.4 KB

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  1. /* Copyright (C) 1991, 1997, 2000, 2003 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, write to the Free
  13. Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  14. 02111-1307 USA. */
  15. #include <string.h>
  16. #include <stddef.h>
  17. #include "memcopy.h"
  18. #include "bp-checks.h"
  19. /* Experimentally off - libc_hidden_proto(strcpy) */
  20. /* Copy SRC to DEST. */
  21. char *strcpy (char *dest, const char *src)
  22. {
  23. reg_char c;
  24. char *__unbounded s = (char *__unbounded) CHECK_BOUNDS_LOW (src);
  25. const ptrdiff_t off = CHECK_BOUNDS_LOW (dest) - s - 1;
  26. size_t n;
  27. do
  28. {
  29. c = *s++;
  30. s[off] = c;
  31. }
  32. while (c != '\0');
  33. n = s - src;
  34. (void) CHECK_BOUNDS_HIGH (src + n);
  35. (void) CHECK_BOUNDS_HIGH (dest + n);
  36. return dest;
  37. }
  38. libc_hidden_def(strcpy)