| /* Copyright (C) 2001-2014 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Wolfram Gloger <wg@malloc.de>, 2001. |
| |
| 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 |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <errno.h> |
| #include <stdio.h> |
| #include "malloc.h" |
| |
| static int errors = 0; |
| |
| static void |
| merror (const char *msg) |
| { |
| ++errors; |
| printf ("Error: %s\n", msg); |
| } |
| |
| int |
| main (void) |
| { |
| void *p1, *p2; |
| void *save_state; |
| long i; |
| |
| errno = 0; |
| |
| p1 = malloc (10); |
| if (p1 == NULL) |
| merror ("malloc (10) failed."); |
| |
| p2 = malloc (20); |
| if (p2 == NULL) |
| merror ("malloc (20) failed."); |
| |
| free (malloc (10)); |
| |
| for (i = 0; i < 100; ++i) |
| { |
| save_state = malloc_get_state (); |
| if (save_state == NULL) |
| { |
| merror ("malloc_get_state () failed."); |
| break; |
| } |
| /*free (malloc (10)); This could change the top chunk! */ |
| malloc_set_state (save_state); |
| p1 = realloc (p1, i * 4 + 4); |
| if (p1 == NULL) |
| merror ("realloc (i*4) failed."); |
| free (save_state); |
| } |
| |
| p1 = realloc (p1, 40); |
| free (p2); |
| p2 = malloc (10); |
| if (p2 == NULL) |
| merror ("malloc (10) failed."); |
| free (p1); |
| |
| return errors != 0; |
| } |
| |
| /* |
| * Local variables: |
| * c-basic-offset: 2 |
| * End: |
| */ |