Re: Seg fault in pgbench

From: Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>
To: Jeff Janes <jeff(dot)janes(at)gmail(dot)com>
Cc: pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>, Fabien COELHO <coelho(at)cri(dot)ensmp(dot)fr>
Subject: Re: Seg fault in pgbench
Date: 2016-02-12 20:22:59
Message-ID: 20160212202259.GA574470@alvherre.pgsql
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Jeff Janes wrote:
> If I give pgbench an empty file, I get a segfault.
>
> $ touch empty.sql
> $ src/bin/pgbench/pgbench -T 60 -f empty.sql
> starting vacuum...end.
> Segmentation fault (core dumped)

I fixed this by checking whether the first command is NULL; originally
this case was handled by checking whether the command list itself was
NULL. It could also be fixed by having process_file() return NULL in
the case of an command-less file, but it seemed more churn for no actual
reason, since the case is going to be rejected by exiting the program
anyway.

--
Álvaro Herrera http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

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