many-headers.c revision 1.1.1.2 
1/* This testcase is part of GDB, the GNU debugger.
2
3   Copyright 2018-2020 Free Software Foundation, Inc.
4
5   This program is free software; you can redistribute it and/or modify
6   it under the terms of the GNU General Public License as published by
7   the Free Software Foundation; either version 3 of the License, or
8   (at your option) any later version.
9
10   This program 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
13   GNU General Public License for more details.
14
15   You should have received a copy of the GNU General Public License
16   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
17
18#include <stdio.h>
19#include <malloc.h>
20#include <sys/mman.h>
21
22int
23main (void)
24{
25  char *ptr;
26  int ind, cnt;
27
28  cnt = 100000;
29  for (ind = 0; ind < cnt; ind++)
30    {
31      ptr = mmap (NULL, 100, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
32      if (ptr == NULL)
33	{
34	  fprintf (stderr, "Error allocating memory using mmap\n");
35	  return -1;
36	}
37
38      ptr = mmap (NULL, 100, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
39      if (ptr == NULL)
40	{
41	  fprintf (stderr, "Error allocating memory using mmap\n");
42	  return -1;
43	}
44    }
45
46  ptr = NULL;
47  *ptr = '\0';
48
49  return 0;
50}
51