1/* This testcase is part of GDB, the GNU debugger.
2
3   Copyright 2016-2023 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 <unistd.h>
19#include <stdlib.h>
20#include <signal.h>
21
22volatile int counter = 0;
23
24static void
25handler (int sig)
26{
27  counter = 5;
28}
29
30int
31main (void)
32{
33  signal (SIGALRM, handler);
34  alarm (5);
35
36  /* Compiler may generate a single instruction which branches to
37     itself.  */
38  for (;;); /* loop-line */
39  return 0;
40}
41