pgsql: Suppress new "may be used uninitialized" warning.

From: Noah Misch <noah(at)leadboat(dot)com>
To: pgsql-committers(at)lists(dot)postgresql(dot)org
Subject: pgsql: Suppress new "may be used uninitialized" warning.
Date: 2026-02-17 02:05:59
Message-ID: E1vsATO-001CQG-2S@gemulon.postgresql.org
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Suppress new "may be used uninitialized" warning.

Various buildfarm members, having compilers like gcc 8.5 and 6.3, fail
to deduce that text_substring() variable "E" is initialized if
slice_size!=-1. This suppression approach quiets gcc 8.5; I did not
reproduce the warning elsewhere. Back-patch to v14, like commit
9f4fd119b2cbb9a41ec0c19a8d6ec9b59b92c125.

Reported-by: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Discussion: https://postgr.es/m/1157953.1771266105@sss.pgh.pa.us
Backpatch-through: 14

Branch
------
REL_15_STABLE

Details
-------
https://git.postgresql.org/pg/commitdiff/ec86152e02090d086caf170c77b3f559ce27e830

Modified Files
--------------
src/backend/utils/adt/varlena.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

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