[Bug c/88660] [8/9 Regression] Invalid report of "set but used variable" with -O

[alexander.hirsch at gin dot de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88660

--- Comment #5 from Alexander Hirsch <alexander.hirsch at gin dot de> ---
(In reply to Jeffrey A. Law from comment #4)
> Fixed on the trunk for gcc-10.
Thanks :-)