Fix segmentation fault that an empty prepared statement could cause.

MasaoFujii · MasaoFujii · commit 6da740e72ebf · 2014-09-05T02:19:14.000+09:00
Back-patch to all supported branches.

Per bug #11335 from Haruka Takatsuka
diff --git a/src/backend/tcop/utility.c b/src/backend/tcop/utility.c
@@ -2452,6 +2452,9 @@ GetCommandLogLevel(Node *parsetree)
 {
 	LogStmtLevel lev;
 
+	if (parsetree == NULL)
+		return LOGSTMT_ALL;
+
 	switch (nodeTag(parsetree))
 	{
 			/* raw plannable queries */

Original file line number	Diff line number	Diff line change
`@@ -2452,6 +2452,9 @@ GetCommandLogLevel(Node *parsetree)`
`2452`	`2452`	`{`
`2453`	`2453`	`LogStmtLevel lev;`
`2454`	`2454`
	`2455`	`+ if (parsetree == NULL)`
	`2456`	`+ return LOGSTMT_ALL;`
	`2457`	`+`
`2455`	`2458`	`switch (nodeTag(parsetree))`
`2456`	`2459`	`{`
`2457`	`2460`	`/* raw plannable queries */`