realloc.c 1.3 KB

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  1. /*
  2. * Check: a unit test framework for C
  3. * Copyright (C) 2001, 2002 Arien Malec
  4. *
  5. * This 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. * This 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 this library; if not, write to the
  17. * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
  18. * MA 02110-1301, USA.
  19. */
  20. /*
  21. * AC_FUNC_REALLOC in configure defines realloc to rpl_realloc if
  22. * realloc (p, 0) or realloc (0, n) is NULL to provide GNU
  23. * compatibility
  24. */
  25. #include "libcompat.h"
  26. /* realloc has been defined to rpl_realloc, so first undo that */
  27. #undef realloc
  28. /* this gives us the real realloc to use below */
  29. void *realloc(void *p, size_t n);
  30. /* force realloc(p, 0) and realloc (NULL, n) to return a valid pointer */
  31. void *rpl_realloc(void *p, size_t n)
  32. {
  33. if(n == 0)
  34. n = 1;
  35. if(p == 0)
  36. return malloc(n);
  37. return realloc(p, n);
  38. }