Re: TimeZoning oddities

[robin]

in reply to TimeZoning oddities

You can fix the problem by calling POSIX::tzset() after changing $ENV{TZ}.

It could be that this is the way it's supposed to work, and it's not a bug at all; although the behaviour is certainly inadequately documented and inconsistent. (BTW: the bug I was referring to is here, but I think it's not quite the same problem.)

[JPaul]

Nuts!

I saw that in one of the PODs I was reading through - but since all the examples I had found (including on PM) did not include it, I assumed that it was not really necessary. Doofus.

Thank you very much, this does the magic.

[robin]

At last I have found the definitive answer! The problem is with localtime rather than strftime.

This problem happens only on Linux, and only with a threaded build of perl. There's some disgreement about whether the bug is in Linux or perl, but in either case a manual call to tzset is a good workaround.

See the bug report and ensuing discussion here.