[Bug c++/64611] Using a << operator inside an overloaded << operator gives compile error

[jvoosten at bankai dot nl]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64611

--- Comment #8 from J. van Oosten <jvoosten at bankai dot nl> ---
Confirmed it works as expected with GCC 5.4.0