Fix crash on syslogger startup

hlinnaka · pull[bot] · commit 29bd3380828e · 2024-03-08T00:33:49.000Z
When syslogger starts up, ListenSockets is still NULL. Don't try to pfree it. Oversight in commit e29c464. Reported-by: Michael Paquier Discussion: https://www.postgresql.org/message-id/ZR-uNkgL7m60lWUe@paquier.xyz
diff --git a/src/backend/postmaster/postmaster.c b/src/backend/postmaster/postmaster.c
@@ -2565,10 +2565,13 @@ ClosePostmasterPorts(bool am_syslogger)
 	 * EXEC_BACKEND mode.
 	 */
 #ifndef EXEC_BACKEND
-	for (int i = 0; i < NumListenSockets; i++)
-		StreamClose(ListenSockets[i]);
+	if (ListenSockets)
+	{
+		for (int i = 0; i < NumListenSockets; i++)
+			StreamClose(ListenSockets[i]);
+		pfree(ListenSockets);
+	}
 	NumListenSockets = 0;
-	pfree(ListenSockets);
 	ListenSockets = NULL;
 #endif
 
