Fixed a bug: a join could result in a segmentation fault in copying of a BLOB or TEXT column if some of the BLOB or TEXT columns in the table contained SQL NULL values.
Fixed a bug: If you added self-referential foreign key
constraints with ON DELETE CASCADE to tables and a row
InnoDB to attempt the
deletion of the same row twice because of a cascading delete,
then you got an assertion failure.
Fixed a bug: If you use MySQL 'user-level locks' and close a
InnoDB may assert in
ha_innobase.cc, line 302.