[Bug c++/88800] Spurious -Werror=array-bounds for non-taken branch

[tgrabiec at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88800

--- Comment #1 from Tomasz Grabiec <tgrabiec at gmail dot com> ---
The gcc flags given in the description were incomplete, should be:

gcc flags: -Wall -Werror -std=c++17 -O2