BUG: C2065 When Default Constructor of a Nested Class CalledLast reviewed: May 21, 1997Article ID: Q168373 |
The information in this article applies to:
SYMPTOMSWhen the default constructor of a nested class gets called, it causes the C2065 compiler error:
'identifier' : undeclared identifier RESOLUTIONLook at the More Information section for a workaround.
STATUSMicrosoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article. We are researching this bug and will post new information here in the Microsoft Knowledge Base as it becomes available.
MORE INFORMATIONNOTE: Because constructors do not have names, they are never found during name lookup; however an explicit type conversion using the functional notation will cause a constructor to be called to initialize an object. (This information came from the C++ Working Paper.) The following sample code demonstrates the problem and the workaround.
Sample Code
/*
Compile options: None
*/
class Base
{
public:
class Common
{
public:
Common(){};
};
class Derived : public Common
{
public:
Derived() {}
Derived(int n) {}
};
Base( const Common &theCommon) {}
};
int main(void)
{
Base B1(Base::Derived()); //C2065 here
// Workaround: Comment the above line
// Uncomment the following lines
// Base::Derived D ;
// Base B1(D) ;
return 0;
}
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Keywords : CPPIss CPPLngIss kbcode kberrmsg kbtool vcbuglist500 kbbuglist
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