https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111639
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> --- Ah, good to know, thanks. Which versions of avr-libc are supported with gcc? The version of avr-libc in Fedora has the macros, which means I can't build avr-gcc with the patch for pr 79700 applied.
