MDEV-18136 Server crashes in Item_func_dyncol_create::prepare_arguments

[Closes tempesta-tech#572]

Author: midenok

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

@@ -522,6 +522,25 @@ set timestamp=1523466002.799571;
 insert into t1 values (11),(12);
 set timestamp=1523466004.169435;
 delete from t1 where pk in (11, 12);
+#
+# MDEV-18136 Server crashes in Item_func_dyncol_create::prepare_arguments
+#
+create or replace table t1 (pk int) with system versioning
+partition by system_time interval 7 second (
+partition ver_p1 history,
+partition ver_pn current);
+alter table t1
+partition by system_time interval column_get(column_create(7,7), 7 as int) second (
+partition ver_p1 history,
+partition ver_pn current);
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `pk` int(11) DEFAULT NULL
+) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=latin1 WITH SYSTEM VERSIONING
+ PARTITION BY SYSTEM_TIME INTERVAL 7 SECOND
+(PARTITION `ver_p1` HISTORY ENGINE = DEFAULT_ENGINE,
+ PARTITION `ver_pn` CURRENT ENGINE = DEFAULT_ENGINE)
 # Test cleanup
 drop database test;
 create database test;

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

@@ -475,6 +475,20 @@ insert into t1 values (11),(12);
 set timestamp=1523466004.169435;
 delete from t1 where pk in (11, 12);
 
+--echo #
+--echo # MDEV-18136 Server crashes in Item_func_dyncol_create::prepare_arguments
+--echo #
+create or replace table t1 (pk int) with system versioning
+partition by system_time interval 7 second (
+  partition ver_p1 history,
+  partition ver_pn current);
+alter table t1
+partition by system_time interval column_get(column_create(7,7), 7 as int) second (
+  partition ver_p1 history,
+  partition ver_pn current);
+--replace_result $default_engine DEFAULT_ENGINE
+show create table t1;
+
 --echo # Test cleanup
 drop database test;
 create database test;

sql/partition_info.h

@@ -395,16 +395,26 @@ class partition_info : public Sql_alloc
   bool field_in_partition_expr(Field *field) const;
 
   bool vers_init_info(THD *thd);
-  bool vers_set_interval(Item *item, interval_type int_type, my_time_t start)
+  bool vers_set_interval(THD *thd, Item *item,
+                         interval_type int_type, my_time_t start)
   {
     DBUG_ASSERT(part_type == VERSIONING_PARTITION);
     vers_info->interval.type= int_type;
     vers_info->interval.start= start;
-    return get_interval_value(item, int_type, &vers_info->interval.step) ||
+    if (item->fix_fields_if_needed_for_scalar(thd, &item))
+      return true;
+    bool error= get_interval_value(item, int_type, &vers_info->interval.step) ||
            vers_info->interval.step.neg || vers_info->interval.step.second_part ||
           !(vers_info->interval.step.year || vers_info->interval.step.month ||
             vers_info->interval.step.day || vers_info->interval.step.hour ||
             vers_info->interval.step.minute || vers_info->interval.step.second);
+    if (error)
+    {
+      my_error(ER_PART_WRONG_VALUE, MYF(0),
+               thd->lex->create_last_non_select_table->table_name.str,
+               "INTERVAL");
+    }
+    return error;
   }
   bool vers_set_limit(ulonglong limit)
   {

sql/sql_yacc.yy

@@ -6064,13 +6064,8 @@ opt_versioning_rotation:
        | INTERVAL_SYM expr interval opt_versioning_interval_start
          {
            partition_info *part_info= Lex->part_info;
-           if (unlikely(part_info->vers_set_interval($2, $3, $4)))
-           {
-             my_error(ER_PART_WRONG_VALUE, MYF(0),
-                      Lex->create_last_non_select_table->table_name.str,
-                      "INTERVAL");
+           if (unlikely(part_info->vers_set_interval(thd, $2, $3, $4)))
              MYSQL_YYABORT;
-           }
          }
        | LIMIT ulonglong_num
        {

sql/sql_yacc_ora.yy

@@ -5910,13 +5910,8 @@ opt_versioning_rotation:
        | INTERVAL_SYM expr interval opt_versioning_interval_start
          {
            partition_info *part_info= Lex->part_info;
-           if (unlikely(part_info->vers_set_interval($2, $3, $4)))
-           {
-             my_error(ER_PART_WRONG_VALUE, MYF(0),
-                      Lex->create_last_non_select_table->table_name.str,
-                      "INTERVAL");
+           if (unlikely(part_info->vers_set_interval(thd, $2, $3, $4)))
              MYSQL_YYABORT;
-           }
          }
        | LIMIT ulonglong_num
        {