Re: Bug in batch tuplesort memory CLUSTER case (9.6 only)

On Fri, Jul 01, 2016 at 12:37:23PM -0700, Peter Geoghegan wrote:
> On Fri, Jul 1, 2016 at 12:30 PM, Peter Geoghegan <pg@heroku.com> wrote:
> > Checkout my gensort tool from github. Build the C tool with "make".
> > Then, from the working directory:
> >
> > ./postgres_load.py -m 250 --skew --logged
> > psql -c "CREATE INDEX segfaults on sort_test_skew(sortkey);"
> > psql -c "CLUSTER sort_test_skew USING segfaults;"
> 
> I think that almost any CLUSTER based on an external sort would show
> problems with valgrind memcheck, though. That's probably far easier.

I think such a test would suffice to cover this bug if Valgrind Memcheck does
detect the problem in it.