From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gdb-return-19119-listarch-gdb=sources.redhat.com@sources.redhat.com>
Received: (qmail 15427 invoked by alias); 21 Aug 2004 02:11:47 -0000
Mailing-List: contact gdb-help@sources.redhat.com; run by ezmlm
Precedence: bulk
List-Subscribe: <mailto:gdb-subscribe@sources.redhat.com>
List-Archive: <http://sources.redhat.com/ml/gdb/>
List-Post: <mailto:gdb@sources.redhat.com>
List-Help: <mailto:gdb-help@sources.redhat.com>, <http://sources.redhat.com/ml/#faqs>
Sender: gdb-owner@sources.redhat.com
Received: (qmail 15246 invoked from network); 21 Aug 2004 02:11:45 -0000
Received: from unknown (HELO nevyn.them.org) (66.93.172.17)
  by sourceware.org with SMTP; 21 Aug 2004 02:11:45 -0000
Received: from drow by nevyn.them.org with local (Exim 4.34 #1 (Debian))
	id 1ByLM8-0000s4-MD; Fri, 20 Aug 2004 22:11:44 -0400
Date: Sat, 21 Aug 2004 02:11:00 -0000
From: Daniel Jacobowitz <drow@false.org>
To: "Daniel Miller (IMI)" <dan@imi-test.com>
Cc: gdb@sources.redhat.com
Subject: Re: cannot subscript something of type <data variable, no debug info>
Message-ID: <20040821021144.GA3321@nevyn.them.org>
Mail-Followup-To: "Daniel Miller (IMI)" <dan@imi-test.com>,
	gdb@sources.redhat.com
References: <005601c4871d$67c8c9f0$0401a8c0@dan>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <005601c4871d$67c8c9f0$0401a8c0@dan>
User-Agent: Mutt/1.5.5.1+cvs20040105i
X-SW-Source: 2004-08/txt/msg00266.txt.bz2

On Fri, Aug 20, 2004 at 06:23:03PM -0700, Daniel Miller (IMI) wrote:
> I'm trying to debug an application with gdb... I have a struct that is
> declared thus:
> 
> typedef struct S_Module_s
> {
>   unsigned powered_up;
>        ...  other data elements  ...
> } __attribute__ ((__packed__)) S_Module;
> 
> extern S_Module Mod[1];
> 
> I tried compiling both with -g and -ggdb, with no change in the symptoms.

What platform?  What version of GDB?

> I don't seem to be able to display any of the contents of Mod[0], at all....
> I get effects such as:
> 
> (gdb) p Mod[0]
> cannot subscript something of type `<data variable, no debug info>'
> (gdb) p (S_Module) Mod[0]
> No symbol "S_Module" in current context.
> (gdb) p (struct S_Module_s) Mod[0]
> No struct type named S_Module_s.
> 
> What do I have to do to get gdb to recognize my variables??  Virtually every
> GUI-based debugger out there is a wrapper around gdb, to if it's not happy,
> nobody's happy!!!  Please help!!

We'll need a standalone test case, or at least a dump of the debugging
information in the application, to answer this question.

-- 
Daniel Jacobowitz