merge mysql-5.0-bugteam to mysql-5.1-bugteam

mysql-test/r/create.result

@@ -1572,6 +1572,19 @@ CREATE TABLE IF NOT EXISTS t2 (a INTEGER NOT NULL AUTO_INCREMENT PRIMARY KEY)
 SELECT a FROM t1;
 ERROR 23000: Duplicate entry '1' for key 'PRIMARY'
 DROP TABLE t1, t2;
+#
+# BUG#46384 - mysqld segfault when trying to create table with same 
+#             name as existing view
+#
+CREATE TABLE t1 (a INT);
+CREATE TABLE t2 (a INT);
+INSERT INTO t1 VALUES (1),(2),(3);
+INSERT INTO t2 VALUES (1),(2),(3);
+CREATE VIEW v1 AS SELECT t1.a FROM t1, t2;
+CREATE TABLE v1 AS SELECT * FROM t1;
+ERROR 42S01: Table 'v1' already exists
+DROP VIEW v1;
+DROP TABLE t1,t2;
 End of 5.0 tests
 CREATE TABLE t1 (a int, b int);
 insert into t1 values (1,1),(1,2);

mysql-test/t/create.test

@@ -1198,6 +1198,23 @@ CREATE TABLE IF NOT EXISTS t2 (a INTEGER NOT NULL AUTO_INCREMENT PRIMARY KEY)
 
 DROP TABLE t1, t2;
 
+--echo #
+--echo # BUG#46384 - mysqld segfault when trying to create table with same 
+--echo #             name as existing view
+--echo #
+
+CREATE TABLE t1 (a INT);
+CREATE TABLE t2 (a INT);
+
+INSERT INTO t1 VALUES (1),(2),(3);
+INSERT INTO t2 VALUES (1),(2),(3);
+
+CREATE VIEW v1 AS SELECT t1.a FROM t1, t2;
+--error ER_TABLE_EXISTS_ERROR
+CREATE TABLE v1 AS SELECT * FROM t1;
+
+DROP VIEW v1;
+DROP TABLE t1,t2;
 
 --echo End of 5.0 tests
 

sql/sql_insert.cc

@@ -3596,7 +3596,7 @@ select_create::prepare(List<Item> &values, SELECT_LEX_UNIT *u)
   DBUG_EXECUTE_IF("sleep_create_select_before_check_if_exists", my_sleep(6000000););
 
   if (!(create_info->options & HA_LEX_CREATE_TMP_TABLE) &&
-      create_table->table->db_stat)
+      (create_table->table && create_table->table->db_stat))
   {
     /* Table already exists and was open at open_and_lock_tables() stage. */
     if (create_info->options & HA_LEX_CREATE_IF_NOT_EXISTS)