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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug libstdc++/114645] std::chrono::current_zone ignores $TZ on Linux Date: Mon, 08 Apr 2024 20:48:09 +0000 [thread overview] Message-ID: <bug-114645-4-GNHfQvnU0M@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-114645-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114645 --- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> --- The libc time zone doesn't necessarily correspond to anything in the IANA database anyway. If you use a POSIX time zone definition like TZ="abc4abd" then libc will use that to generate a custom time zone and use that for localtime, ctime etc. That's not compatible with the std::chrono model, which uses the IANA zones. So "the time zone libc would consider local" might not be a real time zone anyway. If you want to interpret $TZ then you can write code to do so, and convert that into a name that std::chrono::locale_zone understands. So if TZ is an IANA name, use it directly, otherwise extract the offset part and then use something like "Etc/GMT-8".
next prev parent reply other threads:[~2024-04-08 20:48 UTC|newest] Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top 2024-04-08 19:01 [Bug libstdc++/114645] New: " hristo at venev dot name 2024-04-08 19:27 ` [Bug libstdc++/114645] " redi at gcc dot gnu.org 2024-04-08 20:23 ` hristo at venev dot name 2024-04-08 20:25 ` redi at gcc dot gnu.org 2024-04-08 20:46 ` hristo at venev dot name 2024-04-08 20:48 ` redi at gcc dot gnu.org [this message] 2024-04-08 20:51 ` redi at gcc dot gnu.org 2024-04-08 20:56 ` hristo at venev dot name 2024-04-09 9:19 ` redi at gcc dot gnu.org 2024-04-09 9:41 ` hristo at venev dot name 2024-04-09 9:46 ` xry111 at gcc dot gnu.org 2024-04-09 9:49 ` hristo at venev dot name 2024-04-09 16:40 ` redi at gcc dot gnu.org 2024-04-09 17:19 ` hristo at venev dot name 2024-04-09 23:29 ` harald at gigawatt dot nl 2024-04-09 23:29 ` redi at gcc dot gnu.org 2024-04-09 23:43 ` redi at gcc dot gnu.org 2024-04-09 23:47 ` redi at gcc dot gnu.org 2024-04-09 23:50 ` harald at gigawatt dot nl 2024-04-09 23:57 ` redi at gcc dot gnu.org 2024-04-10 0:07 ` redi at gcc dot gnu.org 2024-04-10 0:26 ` harald at gigawatt dot nl 2024-04-10 0:57 ` redi at gcc dot gnu.org 2024-04-10 1:10 ` redi at gcc dot gnu.org
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