[Bug c++/57739] Weaker diagnostics of failed overload resolution when operators are declared as friends instead of externally

[unmobile at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57739

--- Comment #1 from Phil Miller <unmobile at gmail dot com> ---
Created attachment 30396
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30396&action=edit
Example of completely unhelpful overload resolution