Article ID: 149327
Article Last Modified on 7/5/2005
APPLIES TO
- Microsoft Visual C++ 4.0 Standard Edition
- Microsoft Visual C++ 4.1 Subscription
- Microsoft Visual C++ 4.2 Enterprise Edition
- Microsoft Visual C++ 4.2 Professional Edition
- Microsoft Visual C++ 5.0 Enterprise Edition
- Microsoft Visual C++ 5.0 Professional Edition
This article was previously published under Q149327
SYMPTOMS
At the point where a class template is expanded using a pointer to a nested class, the compiler reports the following errors (generated by the sample code listed in this article):
Lines 13 and 14 in the sample code are:
template <class T> C<T>::C() : t(T()) // error
{
RESOLUTION
There are three possible workarounds to this problem. Each is stated here in terms of the sample code included in this article:
- Remove t(T()) from the initializer list and add t = T(); to the body of the constructor. This workaround assumes there is an operator= defined for class T.
- Change C<A::B *> c; to C<A::B&> c; or C<A::B> c:
- Change the definitions of class A and class B to that B is no longer nested in the definition of A.
STATUS
Microsoft has confirmed that this is a bug in the Microsoft products that are listed at the beginning of this article.
MORE INFORMATION
In this case, the problem is caused by the attempt to initialize the data member t.
Sample Code
/* Compile options needed: None */
template <class T> class C
{
public:
C();
private:
T t;
};
template <class T> C<T>::C() : t(T()) // error
{
}
class A
{
public:
class B
{
};
};
main()
{
C<A::B *> c;
return 0;
}
Keywords: kbbug kbfix kbvc600fix KB149327
