When the (non-standard) compile-time option SQLITE_DIRECT_OVERFLOW_READ
is used, a 32-bit integer overflow at
will likely cause the database to be reported as corrupt.  The database
is not really harmed by this, but attempts to read the database will be
unsuccessful.

This bug has existed since the SQLITE_DIRECT_OVERFLOW_READ option was added
on [2011-10-08] by check-in [2ab14a8467278571].