gcc/testsuite/g++.old-deja/g++.jason/overload33.C

   1 // { dg-do assemble  }
   2 // PRMS ID: 7507
   3
   4 /* ------------------------------------------------------------ */
   5
   6 class Base0
   7 {
   8 public:
   9                                 Base0() {}
  10       virtual                   ~Base0() {}
  11 };
  12
  13 class Base1
  14 {
  15 public:
  16                                 Base1() {}
  17     virtual                     ~Base1() {}
  18 };
  19
  20 class Derived : public Base0, public Base1
  21 {
  22 public:
  23                                 Derived() {}
  24   virtual                       ~Derived() {}
  25 };
  26
  27 /* ------------------------------------------------------------ */
  28
  29 class Dummy
  30 {
  31   public:
  32                                 Dummy(Base0 * theBase) {}
  33                                 ~Dummy() {}
  34 };
  35
  36 /* ------------------------------------------------------------ */
  37
  38 template<class T>
  39 class ConstSmartPtr
  40 {
  41   T*                    myItem;         // private
  42
  43   public:
  44                         ConstSmartPtr(T const* theItem);
  45
  46                         operator T const*() const
  47                                 { return myItem; }
  48   protected:
  49     T*                  _item() const
  50                                 { return myItem; }
  51 };
  52
  53 template<class T>
  54 class SmartPtr : public ConstSmartPtr<T>
  55 {
  56   public:
  57                         SmartPtr(T* theItem)
  58                           : ConstSmartPtr<T>(theItem) {}
  59
  60     T*                  item() const
  61                                 { return this->_item(); }
  62
  63                         operator T*() const
  64                                 { return this->_item(); }
  65 };
  66
  67 /* ------------------------------------------------------------ */
  68
  69 void
  70 function()
  71 {
  72   SmartPtr<Derived>  myObj = new Derived();
  73
  74   Dummy th1(myObj);                 // Doesn't work under Cygnus
  75   Dummy th2((Base0 *) myObj);       // Doesn't work either
  76 }
  77
  78 /* ------------------------------------------------------------ */