Re: [PATCHES] Fix for psql core dumping on bad user

From: Peter Eisentraut <peter_e(at)gmx(dot)net>
To: "D(dot) Hageman" <dhageman(at)dracken(dot)com>
Cc: PostgreSQL Development <pgsql-hackers(at)postgresql(dot)org>, Tatsuo Ishii <t-ishii(at)sra(dot)co(dot)jp>
Subject: Re: [PATCHES] Fix for psql core dumping on bad user
Date: 2001-04-18 17:22:08
Message-ID: Pine.LNX.4.30.0104181916340.762-100000@peter.localdomain
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D. Hageman writes:

> The postgresql interactive terminal will dump core on any script that is
> run via the -f command line option if their exists a connect line without
> a valid user. An example connect line is in one of the attached files.

Okay, I've found the problem. When the connection fails, psql momentarily
runs without a valid database connection. When it does that, the
multibyte encoding has the invalid value -1. (You need to compile with
multibyte enabled to reproduce this.) With that value, PQmblen() has
trouble when it parses the next line. Perhaps PQmblen() should simply
return 1 when it is passed an invalid encoding. In any case it should do
better than dump core.

--
Peter Eisentraut peter_e(at)gmx(dot)net http://funkturm.homeip.net/~peter

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