Heikki Linnakangas <hlinnakan...@vmware.com> writes:
> On 04/28/2014 04:51 PM, Tom Lane wrote:
>> I'm not even worried about which headers this program uses.  What I'm
>> worried about is that you've got CATALOG_VERSION_NO compiled into a
>> non-server executable.  Is that really such a great idea?  Wouldn't it be
>> better if pg_rewind did not depend on that?  (Perhaps it should get the
>> database's catalog version out of the pg_control file, for example.)

> Sure, that would be better. Although I don't have much hope to make it 
> completely version-independent. At the moment, pg_rewind explicitly 
> reads the control file (yeah, it knows about that too), and checks that 
> the catalog version matches what pg_rewind was compiled with.

... which might or might not be the same one that libpgcommon was compiled
with, no?  I don't think you're really protecting yourself against version
skew that way.

                        regards, tom lane

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