Re: Alignment padding bytes in arrays vs the planner

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

From: Tom Lane <tgl@sss.pgh.pa.us>
To: Robert Haas <robertmhaas@gmail.com>
Cc: Noah Misch <noah@leadboat.com>, pgsql-hackers@postgresql.org
Date: 2011-05-24T18:18:28Z
Lists: pgsql-hackers
Robert Haas <robertmhaas@gmail.com> writes:
> On Tue, May 24, 2011 at 2:11 PM, Noah Misch <noah@leadboat.com> wrote:
>> QTN2QT() allocates memory for a TSQuery using palloc(). TSQuery contains an
>> array of QueryItem, which contains three bytes of padding between its first and
>> second members. Those bytes don't get initialized, so we have unpredictable
>> content in the resulting datum.

> OK, so I guess this needs to be applied and back-patched to 8.3, then.

Yeah.  I'm in process of doing that, actually.

			regards, tom lane