[Bug c++/59295] useless warning: 'Bar' is already a friend of 'Foo' [enabled by default]

[ppluzhnikov at google dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59295

--- Comment #2 from Paul Pluzhnikov <ppluzhnikov at google dot com> ---
This appears to be a very old warning.
Patch: http://gcc.gnu.org/ml/gcc-patches/2014-03/msg01123.html