|From:||"Hiroshi Inoue" <Inoue(at)tpf(dot)co(dot)jp>|
|To:||"Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us>|
|Subject:||RE: [HACKERS] freefuncs.c is never called from anywhere!?|
|Views:||Raw Message | Whole Thread | Download mbox|
> -----Original Message-----
> From: Tom Lane [mailto:tgl(at)sss(dot)pgh(dot)pa(dot)us]
> "Hiroshi Inoue" <Inoue(at)tpf(dot)co(dot)jp> writes:
> > As far as I see,freeObject() has a fundamental problem.
> > Probably it couldn't free multiple references safely.
> Yes, that code will have a problem with node trees that have
> circular references or multiple links to the same node.
> Both of which are cases that we can currently generate :-(.
> Of course, circular links will also break copyfuncs, equalfuncs,
> and printfuncs. We have a known bug with the backend crashing
> when -d is enabled for certain queries, because of infinite
> recursion in printfuncs.
Multiple links to the same node is not so fatal for other xxxxObject().
In fact they are used without big problem.
But isn't it fatal for freeObject() ?
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