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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Andres Freund <andres@anarazel.de>
cc: pgsql-hackers@lists.postgresql.org, Robert Haas <robertmhaas@gmail.com>,
        Thomas Munro <thomas.munro@gmail.com>
Subject: Re: Pointer subtraction with a null pointer
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Comments: In-reply-to Andres Freund <andres@anarazel.de>
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Andres Freund <andres@anarazel.de> writes:
> Looks good wrt relptr_store. Maybe we should fix the double-eval hazard in
> relptr_access too, think that'd be only one left over...

Hm.  Probably not worth the trouble, because it's hard to envision
a situation where rp is not a plain lvalue.

			regards, tom lane