1 /* Test of safe automatic memory allocation.
2    Copyright (C) 2005, 2007, 2009-2018 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 *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