[Bug middle-end/83239] False positive from -Wstringop-overflow on simple std::vector code

[xry111 at mengyan1223 dot wang]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83239

--- Comment #27 from Xi Ruoyao <xry111 at mengyan1223 dot wang> ---
I confirm it is back in 8.3.0.

See https://gcc.godbolt.org/z/QoSa3W.