From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Sun, 7 Nov 2021 17:18:18 +0000 (-0500)
Subject: Silence uninitialized-variable warning.
X-Git-Url: http://git.postgresql.org/gitweb/static/developers.postgresql.org?a=commitdiff_plain;h=c3ec4f8fe867807613c08fe16789434ab1a74a15;p=users%2Frhaas%2Fpostgres.git

Silence uninitialized-variable warning.

Quite a few buildfarm animals are warning about this, and lapwing
is actually failing (because -Werror).  It's a false positive AFAICS,
so no need to do more than zero the variable to start with.

Discussion: https://postgr.es/m/YYXJnUxgw9dZKxlX@paquier.xyz
---

diff --git a/src/backend/access/transam/xlog.c b/src/backend/access/transam/xlog.c
index 7b1b3e802b..5cda30836f 100644
--- a/src/backend/access/transam/xlog.c
+++ b/src/backend/access/transam/xlog.c
@@ -12109,6 +12109,9 @@ read_backup_label(XLogRecPtr *checkPointLoc, TimeLineID *backupLabelTLI,
 	uint32		hi,
 				lo;
 
+	/* suppress possible uninitialized-variable warnings */
+	*checkPointLoc = InvalidXLogRecPtr;
+	*backupLabelTLI = 0;
 	*backupEndRequired = false;
 	*backupFromStandby = false;