https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63760
--- Comment #6 from Pierre Colombier <pcdwarf at pcdwarf dot net> --- by the way a true "immediate constant" version of __func__ just like __FILE__ would be cool, even for non-avr platforms. I know this is the old behaviour of __FUNCTION__ and that this has been changed long ago for... well... not-so-trivial reasons...
