test/cplusplus/exception.cpp

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