[Bug c++/14502] New: [3.3 Regression] g++ compile fails "no matching function" using forward declaration of class involving inheritance

["stuart_hc at users dot sourceforge dot net" <gcc-bugzilla at gcc dot gnu dot org>]

$ cat gccbug.c
template <class T> class BaseClass
{
    public:
        T* Ptr;
};

template <class T> class TestClass 
{
    public:
        void Func(BaseClass<T> *refcount)
        {
        }

        TestClass()
        {
        }

        TestClass(T * ptr)
        {
            Func(ptr);
        }

        TestClass & operator=(T * ptr) 
        {
            Func(ptr);
            return *this;
        }
};

class DerivedClass;

class DerivedClassTest : public TestClass<DerivedClass>
{
    public:
        DerivedClassTest() : TestClass<DerivedClass>() { };
        DerivedClassTest(DerivedClass * ptr) : TestClass<DerivedClass>(ptr) { };
};

class DerivedClass : public BaseClass<DerivedClass>
{
    public:
        DerivedClass() {};
};

int main(int, char **)
{
    DerivedClassTest Test;
    DerivedClass *Ptr = 0;
    
    Test.Func(Ptr);
    Test = Ptr;
}


$ g++ gccbug.c
gccbug.c: In constructor `TestClass<T>::TestClass(T*) [with T = DerivedClass]':
gccbug.c:36:   instantiated from here
gccbug.c:20: error: no matching function for call to `TestClass<DerivedClass>::
   Func(DerivedClass*&)'
gccbug.c:11: error: candidates are: void TestClass<T>::Func(BaseClass<T>*) 
   [with T = DerivedClass]



g++ versions 3.3, 3.3.1, 3.3.2, 3.3.3 cannot compile this code.  g++ 3.1.x and
3.2.x can compile it, so it looks like a 3.3 specific regression.

If the definition of DerivedClass is moved before DerivedClassTest, g++ 3.3.x
does find a matching function for Func.

-- 
           Summary: [3.3 Regression] g++ compile fails "no matching
                    function" using forward declaration of class involving
                    inheritance
           Product: gcc
           Version: 3.3.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: stuart_hc at users dot sourceforge dot net
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14502