[Bug c++/107408] Inaccurate "error: too many template-parameter-lists" diagnostic for missing template argument list

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107408

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
EDG gets it right:

"t.C", line 6: error: name followed by "::" must be a class or namespace name
  template<class T> template<class U> S::S(U) { }
                                      ^

"t.C", line 6: error: argument list for class template "S" is missing
  template<class T> template<class U> S::S(U) { }
                                      ^

2 errors detected in the compilation of "t.C".