Re: report expected contrecord size

On 2020-Sep-03, Tom Lane wrote:

> Alvaro Herrera <alvherre@2ndquadrant.com> writes:
> > On 2020-Sep-03, Tom Lane wrote:
> >> Uh ... is it really possible for gotlen to be more than total_len?
> >> (I've not looked at the surrounding code here, but that seems weird.)
> 
> > Well, as I understand, total_len comes from one page, and gotlen comes
> > from the continuation record(s) in the next page(s) of WAL.  So if
> > things are messed up, it could happen.  (This *is* the code that
> > validates the record, so it can't make too many assumptions.)
> 
> Got it.  No further objections.

Many thanks for looking!  Pushed now.

-- 
Álvaro Herrera                https://www.2ndQuadrant.com/
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