DNAMES: Server crashes in Item_dyncol_get::get_dyn_value => String::charset on COLUMN_GET with NULL as a column number/name

Description

Filing on behalf of Sergey Petrunia who wrote about it on the dev list

Test case:

Environment

None

Assignee

Oleksandr Byelkin

Reporter

Elena Stepanova

Labels

None

Fix versions

Priority

Major
Configure