MDEV-11071 - Assertion `thd->transaction.stmt.is_empty()' failed in

             Locked_tables_list::unlock_locked_tables

Similarly to regular DROP TABLE, don't leave locked tables mode if CREATE OR
REPLACE dropped temporary table but failed to cerate new one.

The problem is that there's no track of which temporary table was "locked" by
LOCK TABLES.

mysql-test/r/create_or_replace.result

@@ -488,3 +488,23 @@ CREATE OR REPLACE TABLE t1 (i INT);
 UNLOCK TABLES;
 INSERT INTO t2 VALUES (1);
 DROP TABLE t1, t2, t3;
+#
+# MDEV-11071 - Assertion `thd->transaction.stmt.is_empty()' failed in
+#              Locked_tables_list::unlock_locked_tables
+#
+CREATE TEMPORARY TABLE t1(a INT) ENGINE=InnoDB;
+CREATE TEMPORARY TABLE t2(a INT);
+CREATE TABLE t3(a INT);
+LOCK TABLE t2 WRITE;
+SELECT * FROM t2;
+a
+CREATE OR REPLACE TEMPORARY TABLE t1(c INT DEFAULT '');
+ERROR 42000: Invalid default value for 'c'
+SELECT * FROM t3;
+ERROR HY000: Table 't3' was not locked with LOCK TABLES
+CREATE OR REPLACE TEMPORARY TABLE t2(c INT DEFAULT '');
+ERROR 42000: Invalid default value for 'c'
+SELECT * FROM t3;
+ERROR HY000: Table 't3' was not locked with LOCK TABLES
+UNLOCK TABLES;
+DROP TABLE t3;

mysql-test/t/create_or_replace.test

@@ -444,3 +444,27 @@ INSERT INTO t2 VALUES (1);
 
 # Cleanup
 DROP TABLE t1, t2, t3;
+
+--echo #
+--echo # MDEV-11071 - Assertion `thd->transaction.stmt.is_empty()' failed in
+--echo #              Locked_tables_list::unlock_locked_tables
+--echo #
+CREATE TEMPORARY TABLE t1(a INT) ENGINE=InnoDB;
+CREATE TEMPORARY TABLE t2(a INT);
+CREATE TABLE t3(a INT);
+LOCK TABLE t2 WRITE;
+SELECT * FROM t2;
+# drops t2
+--error ER_INVALID_DEFAULT
+CREATE OR REPLACE TEMPORARY TABLE t1(c INT DEFAULT '');
+# make sure we didn't leave locked tables mode
+--error ER_TABLE_NOT_LOCKED
+SELECT * FROM t3;
+# drops t1
+--error ER_INVALID_DEFAULT
+CREATE OR REPLACE TEMPORARY TABLE t2(c INT DEFAULT '');
+# make sure we didn't leave locked tables mode
+--error ER_TABLE_NOT_LOCKED
+SELECT * FROM t3;
+UNLOCK TABLES;
+DROP TABLE t3;

sql/sql_table.cc

@@ -5087,7 +5087,7 @@ bool mysql_create_table(THD *thd, TABLE_LIST *create_table,
   /* Write log if no error or if we already deleted a table */
   if (!result || thd->log_current_statement)
   {
-    if (result && create_info->table_was_deleted)
+    if (result && create_info->table_was_deleted && pos_in_locked_tables)
     {
       /*
         Possible locked table was dropped. We should remove meta data locks