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psql: Make ParseVariableDouble reject values above max

Daniel Gustafsson <dgustafsson@postgresql.org>

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Commit: e04910a9a2a3f20c8139efd4fa4a6cdf00f3d3bd
Author: Daniel Gustafsson <dgustafsson@postgresql.org>
Date: 2026-05-18T15:33:36Z
Releases: 19 (unreleased) 
psql: Make ParseVariableDouble reject values above max

ParseVariableDouble missed returning false after logging an error when
the parsed value exceeded max, making the value assigned rather than
rejected.  Backpatch down to v18 where this was introduced as part of
the \WATCH_INTERVAL.

Author: Sven Klemm <sven@tigerdata.com>
Co-authored-by: Daniel Gustafsson <daniel@yesql.se>
Reviewed-by: Daniel Gustafsson <daniel@yesql.se>
Discussion: https://postgr.es/m/CAMCrgp31p_5SDVi7dwnP39tTW5icQ0MWHA+N4kJdXgkL0PEy8w@mail.gmail.com
Backpatch-through: 18

Files

PathChange+/−
src/bin/psql/t/001_basic.pl modified +2 −0
src/bin/psql/variables.c modified +1 −0

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