This seems to be the detail on the bug report.
> Uncle George <gatgul@voicenet.com> writes:
> > In the regression test rules.sql there is this SQL command
> > update rtest_v1 set a = rtest_t3.a + 20 where b = rtest_t3.b;
> > Which causes my alpha port to go core.
>
> Yeah. This was reported by Pedro Lobo on 11 June, and we've been
> patiently waiting for Jan to decide what to do about it :-(
>
> You could stop the coredump by putting a test into ResolveNew:
>
> {
> *nodePtr = copyObject(n);
> + if (IsA(*nodePtr, Var))
> ((Var *) *nodePtr)->varlevelsup = this_varlevelsup;
> }
>
> but what's not so clear is what's supposed to happen when the
> replacement item *isn't* a Var. I tried to convince myself that nothing
> needed to happen in that case, but wasn't successful. (Presumably the
> replacement expression contains no instances of the variable being
> replaced, so recursing into it with ResolveNew shouldn't be needed
> --- but maybe its varlevelsup values need adjusted?)
>
> regards, tom lane
>
>
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