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From: Andrew Gierth <andrew@tao11.riddles.org.uk>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Jeremy Evans <code@jeremyevans.net>
Cc: Michael Paquier <michael@paquier.xyz>
Cc: pgsql-bugs@lists.postgresql.org
Subject: Re: BUG #15367: Crash in pg_fe_scram_free when using foreign tables
Date: Sat, 08 Sep 2018 14:22:22 +0100
Message-ID: <87o9d8rv08.fsf@news-spur.riddles.org.uk> (raw)
In-Reply-To: <18398.1536410055@sss.pgh.pa.us>
References: <153626613985.23143.4743626885618266803@wrigleys.postgresql.org>
	<20180906215836.GP2726@paquier.xyz>
	<20180906222843.GF17425@jeremyevans.local>
	<20180907165103.GH17425@jeremyevans.local>
	<20180907175518.GI17425@jeremyevans.local>
	<20180907181522.GB32058@paquier.xyz>
	<20016.1536351535@sss.pgh.pa.us>
	<20180907204403.GC32058@paquier.xyz>
	<16558.1536407783@sss.pgh.pa.us>
	<18398.1536410055@sss.pgh.pa.us>

>>>>> "Tom" == Tom Lane <tgl@sss.pgh.pa.us> writes:

 Tom> Could it be that somehow, when libpq is loaded into the backend
 Tom> address space as it is here, libpq winds up calling the backend's
 Tom> copy of pg_saslprep rather than its own?

Yes, that is a thing that happens with ELF-style shared libs when you
dynamically load shared libraries that weren't linked with -Bsymbolic.

Is this potentially also a problem for libpqwalreceiver, which also
loads libpq?

-- 
Andrew (irc:RhodiumToad)




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  Subject: Re: BUG #15367: Crash in pg_fe_scram_free when using foreign tables
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