pgsql: Fix overflow in bsearch_arg() with more than INT_MAX elements

From: Heikki Linnakangas <heikki(dot)linnakangas(at)iki(dot)fi>
To: pgsql-committers(at)lists(dot)postgresql(dot)org
Subject: pgsql: Fix overflow in bsearch_arg() with more than INT_MAX elements
Date: 2024-10-28 12:13:20
Message-ID: E1t5Ocb-002q7T-2O@gemulon.postgresql.org
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Fix overflow in bsearch_arg() with more than INT_MAX elements

This was introduced in commit bfa2cee784, which replaced the old
bsearch_cmp() function we had in extended_stats.c with the current
implementation. The original discussion or commit message of
bfa2cee784 didn't mention where the new implementation came from, but
based on some googling, I'm guessing *BSD or libiberty, all of which
share this same code, with or without this fix.

Author: Ranier Vilela
Reviewed-by: Nathan Bossart
Backpatch-through: 14
Discussion: https://www.postgresql.org/message-id/CAEudQAp34o_8u6sGSVraLwuMv9F7T9hyHpePXHmRaxR2Aboi%2Bw%40mail.gmail.com

Branch
------
REL_15_STABLE

Details
-------
https://git.postgresql.org/pg/commitdiff/07ca2d4110d474669fa03203782b5dae24f1c5c6

Modified Files
--------------
src/port/bsearch_arg.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

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