[Bug c++/71053] [6/7 Regression] Volatile read optimized into endless loop

[michael at weiser dot dinsnail.net]

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)?