is it a bug or do i miss something?(about conflicts between template parameter and data member)

[éææ <longhaitao at otsc dot com dot cn>]

gcc version:

g++ (GCC) 4.1.1 20061011 (Red Hat 4.1.1-30)
Copyright (C) 2006 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is
NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE.

----------------source code------------------------------------
#include <stdio.h>

class Base {
public:
   int type;
   Base(int type) {this->type = type;}
   void showtype() {printf("%d\n",type);}

};

template<int type>
class Derived : public Base {
public:
    Derived();
};

template<int type>
Derived<type>::Derived()
: Base(type)
{
}


template<int TYPE>
class Derived2 : public Base {
public:
    Derived2();
};

template<int TYPE>
Derived2<TYPE>::Derived2()
: Base(TYPE)
{
}

enum {
    ZERO = 0,
    NONZERO = 1,
};


typedef Derived<NONZERO> NonZeroClass;
typedef Derived2<NONZERO> NonZeroClass2;

int main() {
    NonZeroClass tmp;
    tmp.showtype();

    NonZeroClass2 tmp2;
    tmp2.showtype();
}
-----------------source code end-------------------------------

----------------output------------------------------
165643296
1
---------------output end----------------------------

the only difference between Derived and Derived2 is that
Derived's template parameter is the same as Base's data member(they are
both type).

The output to me is a surprise. i do not know whether it is a bug, so
just post it here

3x for your attention.