Re: CVE-2017-7484-induced bugs, or, btree cmp functions are not leakproof? - Mailing list pgsql-hackers

From Dilip Kumar
Subject Re: CVE-2017-7484-induced bugs, or, btree cmp functions are not leakproof?
Date
Msg-id CAFiTN-tk7apiURLCJiJtimoHvY5ScwnvnDDYTkZaDQw8qUs+ew@mail.gmail.com
Whole thread Raw
In response to Re: CVE-2017-7484-induced bugs, or, btree cmp functions are not leakproof?  (Amit Langote <amitlangote09@gmail.com>)
List pgsql-hackers
On Thu, Sep 5, 2019 at 3:26 PM Amit Langote <amitlangote09@gmail.com> wrote:
>
> On Thu, Sep 5, 2019 at 6:33 PM Dilip Kumar <dilipbalaut@gmail.com> wrote:
> >   /*
> > + * For inheritance child relations, we also need to remember
> > + * the root parent.
> > + */
> > + if (parent->rtekind == RTE_RELATION)
> > + rel->inh_root_relid = parent->inh_root_relid > 0 ?
> > + parent->inh_root_relid :
> > + parent->relid;
> > + else
> > + /* Child relation of flattened UNION ALL subquery. */
> > + rel->inh_root_relid = relid;
> >
> > With the current changes, parent->inh_root_relid will always be > 0 so
> > (parent->inh_root_relid > 0) condition doesn't make sence. Right?
>
> Oops, you're right.  It should be:
>
> if (parent->rtekind == RTE_RELATION)
>     rel->inh_root_relid = parent->inh_root_relid;
> else
>     rel->inh_root_relid = relid;
>
Right!

> Updated patch attached.
>

-- 
Regards,
Dilip Kumar
EnterpriseDB: http://www.enterprisedb.com



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