Fix segmentation fault that an empty prepared statement could cause.

MasaoFujii · MasaoFujii · commit 81bffe63c09a · 2014-09-05T02:19:50.000+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
@@ -2308,6 +2308,9 @@ 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
`@@ -2308,6 +2308,9 @@ GetCommandLogLevel(Node *parsetree)`
`2308`	`2308`	`{`
`2309`	`2309`	`LogStmtLevel lev;`
`2310`	`2310`
	`2311`	`+ if (parsetree == NULL)`
	`2312`	`+ return LOGSTMT_ALL;`
	`2313`	`+`
`2311`	`2314`	`switch (nodeTag(parsetree))`
`2312`	`2315`	`{`
`2313`	`2316`	`/* raw plannable queries */`