Fix segmentation fault that an empty prepared statement could cause.

MasaoFujii · MasaoFujii · commit 52eed3d4267f · 2014-09-05T02:19:29.000+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
@@ -2429,6 +2429,9 @@ 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
`@@ -2429,6 +2429,9 @@ GetCommandLogLevel(Node *parsetree)`
`2429`	`2429`	`{`
`2430`	`2430`	`LogStmtLevel lev;`
`2431`	`2431`
	`2432`	`+ if (parsetree == NULL)`
	`2433`	`+ return LOGSTMT_ALL;`
	`2434`	`+`
`2432`	`2435`	`switch (nodeTag(parsetree))`
`2433`	`2436`	`{`
`2434`	`2437`	`/* raw plannable queries */`