Proposed resolution (February, 2010): Change 13.9.3 [temp.explicit] paragraph 1 as follows:
...An explicit instantiation of a function template or
member function of a class template shall not use the
inline or constexpr specifiers.
13.9.3 [temp.explicit] paragraph 1 says, This wording should be revised to apply to member functions of
class templates as well.
An explicit instantiation of a function template shall not
use the inline or constexpr specifiers.