Fix segmentation fault that an empty prepared statement could cause.

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
index f648945ffa3e7093154609c0f9339da880707c94..40ac47f5c2db3e9b09514d9f7e59f1d75e794952 100644 (file)
--- a/src/backend/tcop/utility.c
+++ b/src/backend/tcop/utility.c
@@ -2461,6 +2461,9 @@ GetCommandLogLevel(Node *parsetree)
 {
        LogStmtLevel lev;
 
+       if (parsetree == NULL)
+               return LOGSTMT_ALL;
+
        switch (nodeTag(parsetree))
        {
                        /* raw plannable queries */