tests/lib/test_segv.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * SEGV / backtrace handling test.
   4  *
   5  * copied from test-sig.c
   6  *
   7  * Copyright (C) 2013 by David Lamparter, Open Source Routing.
   8  * Copyright (C) 2013 by Internet Systems Consortium, Inc. ("ISC")
   9  *
  10  * This file is part of Quagga
  11  */
  12
  13 #include <zebra.h>
  14 #include <sigevent.h>
  15 #include "lib/log.h"
  16 #include "lib/memory.h"
  17
  18 struct frr_signal_t sigs[] = {};
  19
  20 struct thread_master *master;
  21
  22 void func1(int *arg);
  23 void func3(void);
  24
  25 void func1(int *arg)
  26 {
  27         int *null = NULL;
  28         *null += 1;
  29         *arg = 1;
  30 }
  31
  32 static void func2(size_t depth, int *arg)
  33 {
  34         /* variable stack frame size */
  35         int buf[depth];
  36         for (size_t i = 0; i < depth; i++)
  37                 buf[i] = arg[i] + 1;
  38         if (depth > 0)
  39                 func2(depth - 1, buf);
  40         else
  41                 func1(&buf[0]);
  42         for (size_t i = 0; i < depth; i++)
  43                 buf[i] = arg[i] + 2;
  44 }
  45
  46 void func3(void)
  47 {
  48         int buf[6];
  49         func2(6, buf);
  50 }
  51
  52 static void threadfunc(struct thread *thread)
  53 {
  54         func3();
  55 }
  56
  57 int main(void)
  58 {
  59         master = thread_master_create(NULL);
  60         signal_init(master, array_size(sigs), sigs);
  61
  62         zlog_aux_init("NONE: ", LOG_DEBUG);
  63
  64         thread_execute(master, threadfunc, 0, 0);
  65
  66         exit(0);
  67 }