[Bug c++/64596] Friendship not recognized and template param deduction error

[petschy at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64596

--- Comment #1 from petschy at gmail dot com ---
Created attachment 34444
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34444&action=edit
code