/* Copyright (C) 2001 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, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ #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: */