Fix segmentation fault that an empty prepared statement could cause.

MasaoFujii · MasaoFujii · commit 78b1228efeb5 · 2014-09-05T02:19:45.000+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
@@ -2184,6 +2184,9 @@ 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
`@@ -2184,6 +2184,9 @@ GetCommandLogLevel(Node *parsetree)`
`2184`	`2184`	`{`
`2185`	`2185`	`LogStmtLevel lev;`
`2186`	`2186`
	`2187`	`+ if (parsetree == NULL)`
	`2188`	`+ return LOGSTMT_ALL;`
	`2189`	`+`
`2187`	`2190`	`switch (nodeTag(parsetree))`
`2188`	`2191`	`{`
`2189`	`2192`	`/* raw plannable queries */`