[Bug c++/61970] array subscript is above array bounds [-Werror=array-bounds]

[kaijun at seed dot net.tw]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61970

--- Comment #2 from kaijun <kaijun at seed dot net.tw> ---
For Andrew Pinski, I am sorry, past again bug: 61970 and 61971 is the same.

Thanks.