tests/lib/test_segv.c

   1 /*
   2  * SEGV / backtrace handling test.
   3  *
   4  * copied from test-sig.c
   5  *
   6  * Copyright (C) 2013 by David Lamparter, Open Source Routing.
   7  * Copyright (C) 2013 by Internet Systems Consortium, Inc. ("ISC")
   8  *
   9  * This file is part of Quagga
  10  *
  11  * Quagga is free software; you can redistribute it and/or modify it
  12  * under the terms of the GNU General Public License as published by the
  13  * Free Software Foundation; either version 2, or (at your option) any
  14  * later version.
  15  *
  16  * Quagga is distributed in the hope that it will be useful, but
  17  * WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License along
  22  * with this program; see the file COPYING; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  24  */
  25
  26 #include <zebra.h>
  27 #include <sigevent.h>
  28 #include "lib/log.h"
  29 #include "lib/memory.h"
  30
  31 struct quagga_signal_t sigs[] = {};
  32
  33 struct thread_master *master;
  34
  35 void func1(int *arg);
  36 void func3(void);
  37
  38 void func1(int *arg)
  39 {
  40         int *null = NULL;
  41         *null += 1;
  42         *arg = 1;
  43 }
  44
  45 static void func2(size_t depth, int *arg)
  46 {
  47         /* variable stack frame size */
  48         int buf[depth];
  49         for (size_t i = 0; i < depth; i++)
  50                 buf[i] = arg[i] + 1;
  51         if (depth > 0)
  52                 func2(depth - 1, buf);
  53         else
  54                 func1(&buf[0]);
  55         for (size_t i = 0; i < depth; i++)
  56                 buf[i] = arg[i] + 2;
  57 }
  58
  59 void func3(void)
  60 {
  61         int buf[6];
  62         func2(6, buf);
  63 }
  64
  65 static int threadfunc(struct thread *thread)
  66 {
  67         func3();
  68         return 0;
  69 }
  70
  71 int main(void)
  72 {
  73         master = thread_master_create(NULL);
  74         signal_init(master, array_size(sigs), sigs);
  75
  76         zlog_aux_init("NONE: ", LOG_DEBUG);
  77
  78         thread_execute(master, threadfunc, 0, 0);
  79
  80         exit(0);
  81 }