[Bug c++/86883] Unexpected error: expansion pattern '<anonymous>' contains no argument packs

[vopl at bk dot ru]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86883

vopl at bk dot ru changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |vopl at bk dot ru

--- Comment #3 from vopl at bk dot ru ---
Probably caused by the same

$ cat test.cpp 
template<typename... T> struct Outer
{
    template<T... Values0>
    struct Inner
    {
        static bool Member;
    };
};

template<typename... T>
template<T... Values>
bool Outer<T...>::Inner<Values...>::Member;

$ g++-10.2.0 test.cpp 
test.cpp:12:34: error: expansion pattern ‘Values0’ contains no parameter packs
   12 | bool Outer<T...>::Inner<Values...>::Member;
      |                                  ^
test.cpp:12:6: error: too many template-parameter-lists
   12 | bool Outer<T...>::Inner<Values...>::Member;
      |      ^~~~~~~~~~~