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Consider the following code:
class A {
class B {};
};
template <typename C>
class D : A::B {};
void f() {
D<int> d;
}
D<int> inherits from A::B which is a private nested class. I was expecting this to be an error, but GCC accepts this code. Is it a bug in GCC or am I missing something?
I’ve found the answer. Since it’s might be useful for others I am posting it here – this is GCC bug 47346.