Hi, Oleksandr! On Dec 22, Oleksandr Byelkin wrote:

revision-id: 980a5c318803d6aa7355e019869597976dcf19bf (mariadb-10.0.33-37-g980a5c31880) parent(s): 042f763268c0f209e7c12e0a6a72bb5d204dfe29 author: Oleksandr Byelkin committer: Oleksandr Byelkin timestamp: 2017-12-22 14:00:10 +0100 message:

MDEV-14572: Assertion `! is_set()' failed in Diagnostics_area::set_eof_status upon EXPLAIN UPDATE in PS

Restore EXPAIN flag in SELECT_LEX before execution multi-update by flag in LEX (the same but in other way made before INSERT/DELETE/SELECT)

Please explain what was the reason for the bug, why the status was set twice, and how your change fixes it. Regards, Sergei Chief Architect MariaDB and security@mariadb.org