Re: pg_upgrade segfaults when given an invalid PGSERVICE value

From: Steve Singer <ssinger(at)ca(dot)afilias(dot)info>
To: Bruce Momjian <bruce(at)momjian(dot)us>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, PostgreSQL-development Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: pg_upgrade segfaults when given an invalid PGSERVICE value
Date: 2013-03-20 21:43:20
Message-ID: 514A2D78.8040109@ca.afilias.info
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On 13-03-20 02:17 PM, Bruce Momjian wrote:
> On Wed, Mar 20, 2013 at 01:30:20PM -0400, Tom Lane wrote:

>> While this surely isn't the nicest answer, it doesn't seem totally
>> unreasonable to me. A bad service name indeed does not contribute
>> anything to the set of defaults available.
>
> I think the concern is that the services file could easily change the
> defaults that are used for connecting, though you could argue that the
> real defaults for a bad service entry are properly returned.

Yes, my concern is that if I have a typo in the value of PGSERVICE I
don't want to end up getting connected a connection to localhost instead
of an error.

From a end-user expectations point of view I am okay with somehow
marking the structure returned by PQconndefaults in a way that the
connect calls will later fail.

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