gcc/testsuite/g++.dg/ext/label3.C

   1 // Bug: we were removing the p = q assignment in dce, and then reinserting
   2 // it *after* the try/catch in out-of-ssa.  Oops.
   3
   4 // testcase reduced from libjava/interpret.cc.
   5
   6 // { dg-do run }
   7 // { dg-options "-O2" }
   8
   9 extern "C" int printf (const char *, ...);
  10
  11 bool b;
  12
  13 int main()
  14 {
  15   __label__ one, two, done;
  16   void *labs[] = { &&one, &&two, &&done };
  17   const void **q = (const void **)labs;
  18   const void **p = q;
  19
  20   try
  21     {
  22     one:
  23       printf ("one!\n");
  24       if (b)
  25         throw 42;
  26       goto **p++;
  27
  28     two:
  29       printf ("two!\n");
  30       goto **p++;
  31
  32     done:
  33       printf ("done!\n");
  34     }
  35   catch (int)
  36     {
  37       printf ("caught!\n");
  38     }
  39 }