[Bug libstdc++/71367] std::time_get does not implement 'r' or 'p'

[xry111 at mengyan1223 dot wang via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71367

--- Comment #7 from Xi Ruoyao <xry111 at mengyan1223 dot wang> ---
Any progress on this (after two years? :)