MDEV-14741 Assertion '(trx)->start_file == 0' failed

in row_truncate_table_for_mysql()

mysql-test/suite/versioning/r/partition.result

@@ -354,5 +354,13 @@ create or replace table t2 (f int);
 create trigger tr before insert on t2
 for each row select count(*) from t1 into @a;
 insert into t2 values (1);
+# MDEV-14741 Assertion `(trx)->start_file == 0' failed in row_truncate_table_for_mysql()
+create or replace table t1 (i int) with system versioning
+partition by system_time interval 1 hour (
+partition p1 history,
+partition pn current);
+set autocommit= off;
+truncate table t1;
+set autocommit= on;
 drop table t1;
 drop table t2;

mysql-test/suite/versioning/t/partition.test

@@ -303,6 +303,14 @@ create trigger tr before insert on t2
 for each row select count(*) from t1 into @a;
 insert into t2 values (1);
 
+--echo # MDEV-14741 Assertion `(trx)->start_file == 0' failed in row_truncate_table_for_mysql()
+create or replace table t1 (i int) with system versioning
+partition by system_time interval 1 hour (
+  partition p1 history,
+  partition pn current);
+set autocommit= off;
+truncate table t1;
+set autocommit= on;
 
 drop table t1;
 drop table t2;

sql/partition_info.cc

@@ -1072,7 +1072,10 @@ class Table_locker
     thd->lock= saved_lock;
     thd->locked_tables_mode= saved_mode;
     if (locked && !thd->in_sub_stmt)
+    {
       ha_commit_trans(thd, false);
+      ha_commit_trans(thd, true);
+    }
   }
 };