libvtv/testsuite/povray-derived.cc

   1 // Small test case from povray, see if it reproduces.
   2
   3 #include <stdio.h>
   4
   5 class POVMS_MessageReceiver
   6 {
   7
   8 private:
   9    int x;
  10    class Handler
  11    {
  12       public:
  13          virtual void print() = 0;
  14    };
  15 protected:
  16    template<class T> class MemberHandler : public Handler
  17    {
  18    public:
  19       MemberHandler(T *xx)
  20       {
  21         x = xx;
  22       }
  23
  24       ~MemberHandler() {}
  25
  26       void print()
  27       {
  28          printf("In print\n");
  29       }
  30   private:
  31       T *x;
  32    };
  33
  34 private:
  35    struct HandlerNode
  36    {
  37       Handler *handler;
  38    };
  39
  40    HandlerNode *receiver;
  41 public:
  42    POVMS_MessageReceiver(int xx) : x(xx) {}
  43    ~POVMS_MessageReceiver() {}
  44
  45    void foo(int *xx);
  46    void try_call();
  47 };
  48
  49 void POVMS_MessageReceiver::foo(int *xx)
  50 {
  51    receiver = new HandlerNode;
  52
  53    receiver->handler = new MemberHandler<int>(xx);
  54 }
  55
  56 void POVMS_MessageReceiver::try_call()
  57 {
  58    receiver->handler->print();
  59 }
  60
  61
  62 int main()
  63 {
  64    int loc = 34;
  65    POVMS_MessageReceiver a_test(100);
  66
  67    a_test.foo(&loc);
  68    a_test.try_call();
  69 }
  70
  71
  72