Peter Geoghegan <> writes:
> FWIW, I think that that bug tells us a lot about hash index usage in
> the field. It took many months for someone to complain about what
> ought to have been a really obvious bug. Clearly, hardly anybody is
> using hash indexes. I broke hash index tuplesort builds in a similar
> way at one point, too. The slightest bit of regression test coverage
> would have caught either bug, I believe.

We *do* have regression test coverage, but that code is set up to not
kick in at any index scale that would be sane to test in the regression
tests.  See

                        regards, tom lane

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