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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>,
  Michael Paquier <michael@paquier.xyz>,  pgsql-bugs@lists.postgresql.org
Subject: Re: BUG #15367: Crash in pg_fe_scram_free when using foreign tables
In-Reply-To: <18398.1536410055@sss.pgh.pa.us> (Tom Lane's message of "Sat, 08
	Sep 2018 08:34:15 -0400")
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>>>>> "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)