[Bug c/66088] -Wunused-but-set-variable does not regard static variable access in local scope

[sch...@linux-m68k.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66088

--- Comment #4 from Andreas Schwab <sch...@linux-m68k.org> ---
The modification cannot be observed outside of the function, thus removing the
assignment would not change the behaviour of the whole program.