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a70e13a39e
Tighten the semantics of boundary-case timestamptz so that we allow timestamps >= '4714-11-24 00:00+00 BC' and < 'ENDYEAR-01-01 00:00+00 AD' exactly, no more and no less, but it is allowed to enter timestamps within that range using non-GMT timezone offsets (which could make the nominal date 4714-11-23 BC or ENDYEAR-01-01 AD). This eliminates dump/reload failure conditions for timestamps near the endpoints. To do this, separate checking of the inputs for date2j() from the final range check, and allow the Julian date code to handle a range slightly wider than the nominal range of the datatypes. Also add a bunch of checks to detect out-of-range dates and timestamps that formerly could be returned by operations such as date-plus-integer. All C-level functions that return date, timestamp, or timestamptz should now be proof against returning a value that doesn't pass IS_VALID_DATE() or IS_VALID_TIMESTAMP(). Vitaly Burovoy, reviewed by Anastasia Lubennikova, and substantially whacked around by me |
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