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MDEV-17021 Server crash or assertion `length <= column->length' failure in write_block_record

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Problem was that the number of NULL bit's was record wrong in the
.frm file because there could be more fields marked NOT_NULL after the
number of not_null fields where recorded.

Fixed by copying test for virtual fields from prepare_create_field()
The code change, only the test, doesn't have to be merged to 10.3
as this is fixed there.
This commit is contained in:
Monty
2018-08-24 18:08:56 +03:00
parent 0cafc13164
commit f195286a3e
3 changed files with 61 additions and 0 deletions
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4
sql/sql_table.cc
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@ -3328,6 +3328,10 @@ mysql_prepare_create_table(THD *thd, HA_CREATE_INFO *create_info,
}
}
/* Virtual fields are always NULL */
if (sql_field->vcol_info)
sql_field->flags&= ~NOT_NULL_FLAG;
if (sql_field->sql_type == MYSQL_TYPE_SET ||
sql_field->sql_type == MYSQL_TYPE_ENUM)
{