Compiler Warning (level 1) C4544
Default arguments on template declaration ignored
A default template argument was specified in an incorrect location and was ignored. A default template argument for a class template can only be specified in the declaration or definition of the class template and not on a member of the class template.
The following sample generates C4545:
// C4544.cpp
// compile with: /W1 /LD
template <class T>
struct S
{
template <class T1>
struct S1;
void f();
};
template <class T=int>
template <class T1>
struct S<T>::S1 {}; // C4544
In the following example, the default parameter applies to class template S:
// C4544b.cpp
// compile with: /LD
template <class T = int>
struct S
{
template <class T1>
struct S1;
void f();
};
template <class T>
template <class T1>
struct S<T>::S1 {};