1/* This testcase is part of GDB, the GNU debugger.
2
3   Copyright 2004-2020 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 <signal.h>
19#include <stdlib.h>
20#include <string.h>
21
22extern void
23keeper (int sig)
24{
25}
26
27volatile long v1 = 0;
28volatile long v2 = 0;
29volatile long v3 = 0;
30
31extern long
32bowler (void)
33{
34  /* Try to read address zero.  Do it in a slightly convoluted way so
35     that more than one instruction is used.  */
36  return *(char *) (v1 + v2 + v3);
37}
38
39int
40main ()
41{
42  static volatile int i;
43
44  struct sigaction act;
45  memset (&act, 0, sizeof act);
46  act.sa_handler = keeper;
47  sigaction (SIGSEGV, &act, NULL);
48  sigaction (SIGBUS, &act, NULL);
49
50  bowler ();
51  return 0;
52}
53