Peter Eisentraut <peter_e(at)gmx(dot)net> writes:
> On the last seven lines of the file I've marked a part that, when removed,
> makes the problem disappear, which might give a hint. Besides that, I'm
> clueless.
Looks like I must have broken this as a side-effect of IN-subselect
optimizations --- 7.3 doesn't fail. Will fix it, thanks for the test
case.
regards, tom lane