https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71053
--- Comment #5 from Michael Weiser <michael at weiser dot dinsnail.net> --- I think it's well estabilished and verified by now that this is an avr-target-specific regression (which I think is what Richard meant). Is anybody looking into this? Is more information needed? Can I do anything to help debug this further (i.e. try to figure out the commit that caused the regression)?