Compiler Error C2427

'class' : cannot define class in this scope

Remarks

An attempt was made to define a nested class, but the nested class is a member of a base class, not the most containing class.

Example

The following example generates C2427:

// C2427.cpp
// compile with: /c
template <class T>
struct S {
   struct Inner;
};

struct Y : S<int> {};

struct Y::Inner {};   // C2427

// OK
template<typename T>
struct S<T>::Inner {};