Horton

Detect overflow in timestamp[tz] subtraction.

Tom Lane <tgl@sss.pgh.pa.us>

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Commit: 8028e294b456bf1539649527fd98b3985fa4752a
Author: Tom Lane <tgl@sss.pgh.pa.us>
Date: 2023-02-20T22:26:25Z
Releases: 16.0 
Detect overflow in timestamp[tz] subtraction.

It's possible to overflow the int64 microseconds field of the
output interval when subtracting two timestamps.  Detect that
instead of silently returning a bogus result.

Nick Babadzhanian

Discussion: https://postgr.es/m/CABw73Uq2oJ3E+kYvvDuY04EkhhkChim2e-PaghBDjOmgUAMWGw@mail.gmail.com

Files

PathChange+/−
src/backend/utils/adt/timestamp.c modified +4 −1
src/test/regress/expected/timestamp.out modified +9 −0
src/test/regress/expected/timestamptz.out modified +9 −0
src/test/regress/sql/timestamp.sql modified +4 −0
src/test/regress/sql/timestamptz.sql modified +4 −0

Discussion