Jim Nasby <Jim(at)Nasby(dot)net> writes:
> (looking at original case)... the original bug wasn't actually
> recursive.

No, there are two different cases being dealt with here.  If the first
call of an expression results in an error, and then we come back and try
to re-use the expression state tree, we can have trouble because the
state tree contains partially-updated internal state for the called
function.  This doesn't require any recursion but it leads to pretty
much the same problems as the recursive case.

			regards, tom lane

In response to

• Re: crash in plancache with subtransactions at 2010-11-01 14:14:03 from Jim Nasby

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