| Issue |
102927
|
| Summary |
Clang rejects valid out of class definition of static data member of nested class template
|
| Labels |
clang
|
| Assignees |
|
| Reporter |
ranaanoop
|
While answering [this question](https://stackoverflow.com/q/78862577/12002570) I noticed that clang rejects the following program while gcc and msvc correctly accept it. [Demo](https://godbolt.org/z/MbfK6zvrE)
```
#include <iostream>
template <class T>
class Outer
{
public:
enum InnerType {foo, bar /* etc */};
template <InnerType U>
class Inner
{
public:
static int x;
};
public:
void print() { std::cout << Inner<foo>::x << std::endl; }
};
template<class T> template<enum Outer<T>::InnerType I> int Outer<T>::template Inner<I>::x =0;
int main()
{
Outer<int> i;
i.print();
}
```
Clang says:
```
<source>:21:90: error: nested name specifier 'Outer<T>::template template Inner<I>::' for declaration does not refer into a class, class template or class template partial specialization
21 | template<class T> template<enum Outer<T>::InnerType I> int Outer<T>::template Inner<I>::x =0;
|
```
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