innodb assert "array->n_elems < array->max_elems" on a huge blob update

InnoDB and XtraDB crash on the following test case:

--max-allowed-packet=128M

--innodb-log-file-size=210M

source include/have_innodb.inc;

create table foo (id varchar(37) not null, content longblob) engine=INNODB;

insert into foo (id, content) values('xyz', '');

update foo set content=repeat('a', 43941888) where id='xyz';

Note that if the blob gets larger (45000000) or innodb-log-file-size gets smaller (209M) then there is no crash, instead there's an error InnoDB: The total blob data length (44999232) is greater than 10% of the total redo log size (440401920). Please increase total redo log size.