https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108409
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to Jonathan Wakely from comment #0) > We should parse the TZ env var and see if it is already an IANA name, and > handle a few other special cases. E.g. gcc119 in the cfarm hax TZ=CUT0 which > means a time zone named "CUT" (coordinated universal time) with a 0 offset > from UTC. So map to UTC. More generally, "FOOn" is a time zone called "FOO" > with a -n offset, so we could map any such string to "Etc/GMT-n" It now works if TZ contains an IANA time zone name, or any string matching "???0". If the systemwide TZ isn't one of those, users can define TZ for their own programs' environment. I don't know if that's good enough.
