Re: Incorrect processing of CREATE TRANSFORM with DDL deparding

From: Michael Paquier <michael(dot)paquier(at)gmail(dot)com>
To: Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>
Cc: PostgreSQL mailing lists <pgsql-bugs(at)postgresql(dot)org>
Subject: Re: Incorrect processing of CREATE TRANSFORM with DDL deparding
Date: 2015-05-25 21:47:54
Message-ID: CAB7nPqR3oeggsoVqKrgvoS=mJCfH1qMbFHjCGj2RVLu0Nf7Sjg@mail.gmail.com
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On Tue, May 26, 2015 at 12:52 AM, Alvaro Herrera wrote:
> Michael Paquier wrote:
>> In ProcessUtilitySlow()@utility.c, for a node T_CreateTransformStmt,
>> process does not return ObjectAddress. This makes process inconsistent
>> with the other commands and the ObjectAddress passed to
>> EventTriggerCollectSimpleCommand is not initialized.
>> Coverity has pointed out the error, I just some legwork to sort out a fix.
>
> Yeah, I had noticed this and was pretty annoyed because we ended up in
> precisely the situation we didn't want to be: new code is added to
> ProcessUtility that is not handled by the deparse framework. (I
> don't know whether TRANSFORM went in first or deparse, but it doesn't
> really matter.)
>
> The fix as you say is pretty trivial, but I would like to use this is a
> test case to ensure that we will catch all these mistakes in the future
> too not only this particular one.

I guess that you could add an assertion at the bottom of
ProcessUtilitySlow() as well to check code paths where ObjectAddress
is not initialized correctly.
--
Michael

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