[mdb-dev] [PATCH] be very careful about accessing beyond page

[David M. <mdb...@dm...>]

Hi again,

In my attempts to track down an elusive bug, I thought maybe the accesses 
in mdb_read_columns may be at fault.

There is already a fair amount of checking there, but not every access was 
prefaced with a read_pg_if...  Also, the fields were being accessed out of 
order, so an access causing advance to the next page could screw up the 
access to a prior field.

The attached patch fixes up these calls, and changes some of the 
hard-coded offsets to use the fmt structure.

My only question is the prec & scale assignments.  Are these used?

Anyway, the patch does no harm here, and seems right.

Apply with -p1.

David

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| David Mansfield              |
| mdb...@dm...       |
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