[Bug libstdc++/111163] signed integer overflow in std::format("{:%S}",std::chrono::duration....)

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111163

--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
We could also just have a "can_hh_mm_ss" check, as I think we use hh_mm_ss in
most places where we do these conversations. Then we would just check once, not
on every cast. I don't think we want to change the conversions inside the
hh_mm_ss constructor