[Bug libstdc++/124853] std::chrono::time_zone misinterprets a Zone line's first sys_info for zones whose rule set has wall-time rules whose effective firing time depends on a prior rule's save (cascading wall TIME)

[alvaro.begue at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124853

--- Comment #1 from Álvaro Begué <alvaro.begue at gmail dot com> ---
Patch posted to gcc-patches:
https://gcc.gnu.org/pipermail/gcc-patches/2026-April/714876.html