From: Nathan Bossart <nathan@postgresql.org>
Date: Thu, 18 Jun 2026 16:29:49 +0000 (-0500)
Subject: Silence "may be used uninitialized" compiler warning.
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=f04781df5daf112840d08eab39fb95505fda6c9c;p=thirdparty%2Fpostgresql.git

Silence "may be used uninitialized" compiler warning.

Newer gcc warns that this "actual_arg_types" variable may be used
uninitialized, but visual inspection indicates there's no bug.  To
silence the warning, initialize the variable to zeros.

Bug: #19485
Reported-by: Hans Buschmann <buschmann@nidsa.net>
Tested-by: Erik Rijkers <er@xs4all.nl>
Tested-by: Hans Buschmann <buschmann@nidsa.net>
Reviewed-by: Tristan Partin <tristan@partin.io>
Reviewed-by: Álvaro Herrera <alvherre@kurilemu.de>
Discussion: https://postgr.es/m/19485-2b03231a775756f1%40postgresql.org
Discussion: https://postgr.es/m/6c52a1a6612948519468d46cb224a8c4%40nidsa.net
---

diff --git a/src/backend/optimizer/util/clauses.c b/src/backend/optimizer/util/clauses.c
index 07738894d1a..01997e22266 100644
--- a/src/backend/optimizer/util/clauses.c
+++ b/src/backend/optimizer/util/clauses.c
@@ -5138,7 +5138,7 @@ recheck_cast_function_args(List *args, Oid result_type,
 {
 	Form_pg_proc funcform = (Form_pg_proc) GETSTRUCT(func_tuple);
 	int			nargs;
-	Oid			actual_arg_types[FUNC_MAX_ARGS];
+	Oid			actual_arg_types[FUNC_MAX_ARGS] = {0};
 	Oid			declared_arg_types[FUNC_MAX_ARGS];
 	Oid			rettype;
 	ListCell   *lc;