Mailing-List: contact modules-dev-help@httpd.apache.org; run by ezmlm
Precedence: bulk
Reply-To: modules-dev@httpd.apache.org
Received-SPF: pass (nike.apache.org: domain of sorinm@gmail.com designates
 209.85.219.162 as permitted sender)
DomainKey-Signature: a=rsa-sha1; c=nofws;
        d=gmail.com; s=gamma;
        h=mime-version:in-reply-to:references:date:message-id:subject:from:to
         :content-type:content-transfer-encoding;
        b=LT5euqebPVijkEYLxxnOJK3B41s+OuT1r/fN5iTuEjE5JMzbMBu9IWWe2DUg0PF/6l
         oFcG5X4sCJXv+g3ww/vRtakLRxkxrQ8WeVgjo2s23ADlnTek5OMmvgfPBZcFhI4cHQb4
         6AtglpcMmJZwv6L4IHM7Vkq/UPlvFv0ZvnCgU=
MIME-Version: 1.0
In-Reply-To: <F4F81F4822C94883A2D7946D90B6A0E8@connolly>
References: <F4F81F4822C94883A2D7946D90B6A0E8@connolly>
Date: Mon, 13 Apr 2009 23:40:26 +0200
Message-ID: <20170a030904131440v79bea69dp90645dde285e2f51@mail.gmail.com>
Subject: Re: Debuggin appears optimised but shouldn't be?
From: Sorin Manolache <sorinm@gmail.com>
To: modules-dev@httpd.apache.org
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable

On Mon, Apr 13, 2009 at 13:46, Juhani Connolly <Juhani@ninja.co.jp> wrote:
> I'm currently trying to iron out some bugs in a module I'm working and ha=
ve
> spent a day trying to get a debug environment working properly for apache=
.
>
> My ./configure for apache itself was the following:
> OPTIM=3D-O0\ ./configure --prefix=3D/usr/local/apache-dbg/
> --enable-maintainer-mode --with-apr=3D/usr/local/ --with-apr-util=3D/usr/=
local/
> --with-mpm=3Dworker --enable-dbd --enable-so --enable-cgi

Your configuration seems ok.

Mine is
CFLAGS=3D"-ggdb3 -O0 -fno-inline" ./configure and the rest...

and it works.

Sorin

>
> The apr/apr-util were also compiled with OPTIM=3D-O0 and maintainer-mode =
as
> well as some stuff like AP-DBD mysql.
>
> My problem is that whan I run apache through the debugger it still seems
> blatantly like I'm running optimised code as code jumps back and forth an=
d
> certain variable are not visible at all.
>
> I would appreciate if someone could advise me as to what the problem is a=
nd
> how to resolve it.
>
>
> ************************************
>
> Some information that may be relevant:
>
> My module compiles in the following way when using apxs:
>
>> make
>
> /usr/local//build-1/libtool --silent --mode=3Dcompile gcc -Wall
> -Wmissing-prototypes -Wstrict-prototypes -Wmissing-declarations -pthread =
=A0-g
> =A0-DLINUX=3D2 -D_REENTRANT -D_GNU_SOURCE -DAP_DEBUG =A0 -I/n/trunk/inclu=
de/
> =A0-I/usr/local/apache-dbg//include -I. -I/usr/local//include/apr-1
> -prefer-pic -c mod_ninja_ads.c && touch mod_ninja_ads.slo
> /usr/local//build-1/libtool --silent --mode=3Dlink gcc -Wall
> -Wmissing-prototypes -Wstrict-prototypes -Wmissing-declarations -pthread =
=A0-g
> =A0 =A0 =A0 =A0-o mod_ninja_ads.la -rpath /usr/local/apache-dbg//modules =
-module
> -avoid-version =A0mod_ninja_ads.lo
>
> A sample of gdb output:
> The fact that it keeps telling me my source files are newer than my
> executable is certainly a cause of concern and I have no idea why this is
> the case as checking the library it has a last modified moments before I =
run
> it.
>
> *************************************************************************=
**********
> [root@stockx bin]# gdb ./httpd
> GNU gdb Red Hat Linux (6.5-37.el5_2.2rh)
> Copyright (C) 2006 Free Software Foundation, Inc.
> GDB is free software, covered by the GNU General Public License, and you =
are
> welcome to change it and/or distribute copies of it under certain
> conditions.
> Type "show copying" to see the conditions.
> There is absolutely no warranty for GDB. =A0Type "show warranty" for deta=
ils.
> This GDB was configured as "x86_64-redhat-linux-gnu"...Using host
> libthread_db library "/lib64/libthread_db.so.1".
>
> (gdb) break ninja_ads_create_svr_conf
> Function "ninja_ads_create_svr_conf" not defined.
> Make breakpoint pending on future shared library load? (y or [n]) y
> Breakpoint 1 (ninja_ads_create_svr_conf) pending.
> (gdb) r -X
> Starting program: /usr/local/apache-dbg/bin/httpd -X
> [Thread debugging using libthread_db enabled]
> [New Thread 47407880549472 (LWP 23895)]
> Breakpoint 2 at 0x2b1e02016b80: file mod_ninja_ads.c, line 58.
> Pending breakpoint "ninja_ads_create_svr_conf" resolved
> [Switching to Thread 47407880549472 (LWP 23895)]
>
> Breakpoint 2, ninja_ads_create_svr_conf (p=3D0xa92d138, s=3D0xa945c20) at
> mod_ninja_ads.c:58
> warning: Source file is more recent than executable.
> 58 =A0 =A0 =A0{
> (gdb) n
> 59 =A0 =A0 =A0 =A0 =A0 =A0 =A0ninja_ads_srv_conf * svr =3D apr_pcalloc(p,
> sizeof(ninja_ads_srv_conf));
> (gdb)
> 61 =A0 =A0 =A0// =A0 =A0 =A0memset(svr->axadFiles, 0, sizeof(svr->axadFil=
es));
> (gdb)
> 59 =A0 =A0 =A0 =A0 =A0 =A0 =A0ninja_ads_srv_conf * svr =3D apr_pcalloc(p,
> sizeof(ninja_ads_srv_conf));
> (gdb) p svr
> No symbol "svr" in current context.
> (gdb) n
> 61 =A0 =A0 =A0// =A0 =A0 =A0memset(svr->axadFiles, 0, sizeof(svr->axadFil=
es));
> (gdb)
> 60 =A0 =A0 =A0 =A0 =A0 =A0 =A0svr->axadFileList =3D NULL;
> (gdb) p svr
>
> *************************************************************************
>


--=20
A: Because it reverses the logical flow of conversation.
Q: Why is top-posting frowned upon?
A: Top-posting.
Q: What is the most annoying thing in e-mail?