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From: Michael Paquier <[email protected]>
To: Tom Lane <[email protected]>
Cc: Andres Freund <[email protected]>
Cc: Niyas Sait <[email protected]>
Cc: Thomas Munro <[email protected]>
Cc: Julien Rouhaud <[email protected]>
Cc: PostgreSQL Hackers <[email protected]>
Subject: Re: [PATCH] Add native windows on arm64 support
Date: Tue, 30 Aug 2022 08:48:38 +0900
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
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On Mon, Aug 29, 2022 at 10:12:20AM +0900, Michael Paquier wrote:
> I have noticed that yesterday, but cannot think much about it.  This
> basically changes the position of "<!--c1-->" for the first record,
> leaving the second one untouched:
> <!--c1--><?pi arg?><![CDATA[&ent1]]>
> <?pi arg?><![CDATA[&ent1]]><!--c1-->
> 
> I am not used to xmltable(), but I wonder if there is something in one
> of these support functions in xml.c that gets influenced by the
> randomization.  That sounds a bit hairy as make check passed in
> bowerbird, and I have noticed at least two other Windows hosts running
> TAP that passed.  Or that's just something with libxml itself.

This is amazing.  The issue has showed up a second time in a row in
bowerbird, as of:
https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=bowerbird&dt=2022-08-29%2013%3A30%3A32

I don't know what to think about ASLR that manipulates the comment in
this XML object under VS 2017 (perhaps a compiler issue?), but it
should be possible to go back to green simply by removing "<!--c1-->"
from the input string.  Creating an extra output pattern here would be
very costly, as xml_2.out and xml.out have outputs for --with-libxml.

Would people object if I do that for now?
--
Michael


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