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Re: ECPG Segfault and variable usage question.

From: Michael Meskes <meskes(at)postgresql(dot)org>
To: Jürgen Cappel <email(at)juergen-cappel(dot)de>
Cc: pgsql-interfaces <pgsql-interfaces(at)postgresql(dot)org>
Subject: Re: ECPG Segfault and variable usage question.
Date: 2004-02-15 13:42:25
Message-ID: 20040215134225.GA13602@1 (view raw, whole thread or download thread mbox)
Lists: pgsql-interfaces
On Thu, Feb 12, 2004 at 08:00:12PM +0100, Jürgen Cappel wrote:
> this is a code snippet that causes ECPG to segfault. It's quite tricky

I took this code as a.pgc and ran 'ecpg a.pgc' without any problem. Do
you use any special options for ecpg?

> Stack trace was obtained using a snapshot from about 2 weeks ago, ECPG from
> the 7.4.1 release segfaults also.

Hmm, my 7.4.1 version also compiles this snippet cleanly.

> Another problem that's giving me headaches trying to find a workaround for
> is the following use of variables as data sources in INSERT/UPDATE
> statements:
> 	:myarray[index[10]]
> Any comments, suggestions, hints ?   Thanks a lot,

Could you please try if the following patch helps you?

--- /home/postgres/pgsql-ecpg/preproc/pgc.l	2003-12-29 14:53:04.000000000 +0100
+++ pgc.l	2004-02-15 14:38:43.000000000 +0100
@@ -183,7 +183,7 @@
 identifier		{ident_start}{ident_cont}*
-array			({ident_cont}|{whitespace}|[\+\-\*\%\/\(\)])*
+array			({ident_cont}|{whitespace}|[\[\]\+\-\*\%\/\(\)])*
 typecast		"::"

This will make it into CVS soon.

Michael Meskes
Email: Michael at Fam-Meskes dot De
ICQ: 179140304, AIM/Yahoo: michaelmeskes, Jabber: meskes(at)jabber(dot)org
Go SF 49ers! Go Rhein Fire! Use Debian GNU/Linux! Use PostgreSQL!

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