Re: BUG #17855: Uninitialised memory used when the name type value processed in binary mode of Memoize

Tom Lane <tgl@sss.pgh.pa.us>

From: Tom Lane <tgl@sss.pgh.pa.us>
To: David Rowley <dgrowleyml@gmail.com>
Cc: Alexander Lakhin <exclusion@gmail.com>, Robert Haas <robertmhaas@gmail.com>, pgsql-bugs@lists.postgresql.org
Date: 2024-04-30T14:54:03Z
Lists: pgsql-bugs
David Rowley <dgrowleyml@gmail.com> writes:
> I think this is a good idea.  It seems reasonable that some other AM
> might want to do the same thing. Also, it allows me to choose a better
> name for these new IndexOnlyScanState fields. ioss_NameCStringAttNums
> and ioss_NameCStringCount seems more on point. However, I couldn't
> really decide which way around to have Name and CString.

This version LGTM.  The field names are fine, or at least I don't see
a reason to prefer the other way.  One trivial nit: should we make
the array be AttrNumber* instead of int*?  The space saving would be
negligible (it being very unlikely that there's ever more than one
entry), but AttrNumber is a more specific description of what it is.

			regards, tom lane



Commits

  1. Ensure we allocate NAMEDATALEN bytes for names in Index Only Scans