GitLab

Analysis:
=========
   During alter table rebuild, InnoDB fails to apply concurrent insert log.
If the insert log record is present across the blocks then apply phase
trying to access the next block without fetching it.

Fix:
====
During virtual column parsing, check whether the record is present
across the blocks before accessing the virtual column information.
Reviewed-by: Jimmy Yang <jimmy.yang@oracle.com>
RB: 16243