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pgsql: Expand the allowed range of timezone offsets to +/-15:59:59from

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: pgsql-committers(at)postgresql(dot)org
Subject: pgsql: Expand the allowed range of timezone offsets to +/-15:59:59from
Date: 2012-05-30 23:59:30
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-committers
Expand the allowed range of timezone offsets to +/-15:59:59 from Greenwich.

We used to only allow offsets less than +/-13 hours, then it was +/14,
then it was +/-15.  That's still not good enough though, as per today's bug
report from Patric Bechtel.  This time I actually looked through the Olson
timezone database to find the largest offsets used anywhere.  The winners
are Asia/Manila, at -15:56:00 until 1844, and America/Metlakatla, at
+15:13:42 until 1867.  So we'd better allow offsets less than +/-16 hours.

Given the history, we are way overdue to have some greppable #define
symbols controlling this, so make some ... and also remove an obsolete
comment that didn't get fixed the last time.

Back-patch to all supported branches.



Modified Files
src/backend/utils/adt/date.c     |    5 ++---
src/backend/utils/adt/datetime.c |    6 ++----
src/include/utils/timestamp.h    |   10 ++++++++++
3 files changed, 14 insertions(+), 7 deletions(-)

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