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Re: [PATCH][merge-tracking]Maintain Back Compatibility with 1.x.y

From: Kamesh Jayachandran <kamesh_at_collab.net>
Date: 2006-11-20 08:52:40 CET

Daniel Rall wrote:
> On Sun, 19 Nov 2006, Kamesh Jayachandran wrote:
>> I thought of get_mergeinfo hook to ra_serf. Before that just thought
>> of building svn with serf support. Immedeately after building it
>> encountered that svn client segfaulting upon checkout. Found the
>> cause to be 'missing'(non-existent *not NULL* ) 'get_mergeinfo'
>> hook.
>> Fix would be either put a placeholder NULL till implementation, or
>> move the hook to end.
> Thanks Kamesh. I've stubbed out a no-op implementation, which I've
> committed to the branch in r22360.
>> This given a spark that any 1.4.x libsvn_ra_(dav|svn|local) in the
>> 1.5.x chain could give a similar crash.
> As I understand it, we make no compatibility guarantees with internal
> APIs like this one, which our RA layers happen to implement.
> - Dan
Now I understand as the structure is named 'svn_ra__vtable_t' we need
not maintain BC.
How can we guarantee 'svn_ra_get_latest_revnum' and other 'ra' public
functions BC with their dependency on 'svn_ra__vtable_t'

With regards
Kamesh Jayachandran

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Received on Mon Nov 20 08:52:58 2006

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