Re: [HACKERS] aggregation memory leak and fix

> 
> > No apologies necessary.  Glad to have someone digging into that area of
> > the code.  We will gladly apply your patches to 6.5.  However, I request
> > that you send context diffs(diff -c).  Normal diffs are just too
> > error-prone in application.   Send them, and I will apply them right
> > away.
> >  
> Context diffs attached.  This was due to my ignorance of diff.  When I
> made the other files, I though "hmm, these could be difficult to apply
> if the code has changed a bit, wouldn't it be good if they included a
> few lines before and after the fix".  Now I know "-c".

We are seeing regression failure on aggregates after the patches.  It is
happening in nodeAgg.c, line 379:

                     pfree(oldVal); /* XXX - new, let's free the old datum -$


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