1 /* Test of safe automatic memory allocation.
2 Copyright (C) 2005, 2007, 2009-2021 Free Software Foundation, Inc.
3
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 3 of the License, or
7 (at your option) any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <https://www.gnu.org/licenses/>. */
16
17 /* Written by Bruno Haible <bruno@clisp.org>, 2005. */
18
19 #include <config.h>
20
21 #include "malloca.h"
22
23 #include <stdlib.h>
24
25 static void
do_allocation(int n)26 do_allocation (int n)
27 {
28 void *volatile ptr = malloca (n);
29 freea (ptr);
30 safe_alloca (n);
31 }
32
33 void (*func) (int) = do_allocation;
34
35 int
main()36 main ()
37 {
38 int i;
39
40 /* This slows down malloc a lot. */
41 unsetenv ("MALLOC_PERTURB_");
42
43 /* Repeat a lot of times, to make sure there's no memory leak. */
44 for (i = 0; i < 50000; i++)
45 {
46 /* Try various values.
47 n = 0 gave a crash on Alpha with gcc-2.5.8.
48 Some versions of Mac OS X have a stack size limit of 512 KB. */
49 func (34);
50 func (134);
51 func (399);
52 func (510823);
53 func (129321);
54 func (0);
55 func (4070);
56 func (4095);
57 func (1);
58 func (16582);
59 }
60
61 return 0;
62 }
63