pgsql: Avoid crashing when a table is deleted while we're on the process

From: alvherre(at)postgresql(dot)org (Alvaro Herrera)
To: pgsql-committers(at)postgresql(dot)org
Subject: pgsql: Avoid crashing when a table is deleted while we're on the process
Date: 2008-07-17 21:02:31
Message-ID: 20080717210231.EB90D754A84@cvs.postgresql.org
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Log Message:
-----------
Avoid crashing when a table is deleted while we're on the process of checking
it.

Per report from Tom Lane based on buildfarm evidence.

Modified Files:
--------------
pgsql/src/backend/postmaster:
autovacuum.c (r1.80 -> r1.81)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/postmaster/autovacuum.c?r1=1.80&r2=1.81)

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