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[glibc/history.git] / malloc / tst-mallocstate.c
blob97a10586d3660526c72a110b17244d1b14892537
1 /* Copyright (C) 2001 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Wolfram Gloger <wg@malloc.de>, 2001.
5 The GNU C 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.
10 The GNU C 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.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
18 02111-1307 USA. */
20 #include <errno.h>
21 #include <stdio.h>
22 #include "malloc.h"
24 static int errors = 0;
26 static void
27 merror (const char *msg)
29 ++errors;
30 printf ("Error: %s\n", msg);
33 int
34 main (void)
36 void *p1, *p2;
37 void *save_state;
38 long i;
40 errno = 0;
42 p1 = malloc (10);
43 if (p1 == NULL)
44 merror ("malloc (10) failed.");
46 p2 = malloc (20);
47 if (p2 == NULL)
48 merror ("malloc (20) failed.");
50 free (malloc (10));
52 for (i=0; i<100; ++i)
54 save_state = malloc_get_state ();
55 if (save_state == NULL)
57 merror ("malloc_get_state () failed.");
58 break;
60 /*free (malloc (10)); This could change the top chunk! */
61 malloc_set_state (save_state);
62 p1 = realloc (p1, i*4 + 4);
63 if (p1 == NULL)
64 merror ("realloc (i*4) failed.");
65 free (save_state);
68 p1 = realloc (p1, 40);
69 free (p2);
70 p2 = malloc (10);
71 if (p2 == NULL)
72 merror ("malloc (10) failed.");
73 free (p1);
75 return errors != 0;
79 * Local variables:
80 * c-basic-offset: 2
81 * End: