gdb/testsuite/gdb.base/many-headers.c

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2018-2019 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
  22 int
  23 main (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 }