test/cplusplus/exception.cpp

   1 /*
   2     Copyright © 1995-2014, The AROS Development Team. All rights reserved.
   3     $Id$
   4 */
   5
   6 /*
   7  * We use printf() here instead of C++ traditional cout because linking in cout
   8  * increases executable size up to 3 megabytes (!!!), making it difficult to
   9  * disassemble it. Anyway our aim is to test exceptions.
  10  */
  11
  12 #include <stdio.h>
  13 #include <stdlib.h>
  14
  15 #ifdef __AROS__
  16
  17 #include <exec/alerts.h>
  18 #include <proto/exec.h>
  19
  20 extern void *__eh_frame_start;
  21
  22 /*
  23  * Non-working call frame unwinding in AROS causes calling abort().
  24  * Here we manually override this function to call Alert(),
  25  * which can give us a stack trace.
  26  */
  27 void abort(void)
  28 {
  29     printf("abort() called\n");
  30
  31     Alert(AN_Unknown);
  32
  33     /* Calling exit here makes this a noreturn function
  34      * avoiding a compiler warning. */
  35     exit(20);
  36 }
  37
  38 #endif
  39
  40 /* Just to make things a little bit more complex. */
  41 int sub()
  42 {
  43     printf("sub() entered\n");
  44
  45     throw 20;
  46 }
  47
  48 int main ()
  49 {
  50 #ifdef __AROS__
  51     printf("Exception frames start at %p\n", &__eh_frame_start);
  52 #endif
  53
  54     try
  55     {
  56         sub();
  57     }
  58     catch (int e)
  59     {
  60         printf("An exception occurred. Exception Nr. %d\n", e);
  61     }
  62
  63     printf("Exiting\n");
  64     return 0;
  65 }