From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 31799 invoked by alias); 17 May 2002 12:58:45 -0000 Mailing-List: contact gdb-help@sources.redhat.com; run by ezmlm Precedence: bulk List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-owner@sources.redhat.com Received: (qmail 31741 invoked from network); 17 May 2002 12:58:41 -0000 Received: from unknown (HELO hotmail.com) (216.33.241.220) by sources.redhat.com with SMTP; 17 May 2002 12:58:41 -0000 Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Fri, 17 May 2002 05:58:41 -0700 Received: from 158.140.105.55 by lw8fd.law8.hotmail.msn.com with HTTP; Fri, 17 May 2002 12:58:41 GMT X-Originating-IP: [158.140.105.55] From: "Ed Harcourt" To: kevinb@redhat.com, gdb@sources.redhat.com Bcc: Subject: Re: stepping into a shared object Date: Fri, 17 May 2002 05:58:00 -0000 Mime-Version: 1.0 Content-Type: text/plain; format=flowed Message-ID: X-OriginalArrivalTime: 17 May 2002 12:58:41.0338 (UTC) FILETIME=[91A8E9A0:01C1FDA2] X-SW-Source: 2002-05/txt/msg00216.txt.bz2 Kevin, Thanks for the prompt reply. > 1) After the library is dlopen'd, are you able to place a breakpoint > in the shared library and continue to the breakpoint? No, I can't set a breakpoint anywhere in the shared object. I did some further experiments and I'm starting to think this may not be a gdb problem since I can't step into it in dbx either. But dbx gives me an error message that says: "cannot find object file corresponding to source f.cpp" gdb doesn't tell me anything. However, I can step into it in dbx if I build my .so with the Sun compiler and not g++. So maybe its a problem with linking the mix and match of Sun object files and g++ object files. Or maybe I need some other magic switch other than -g in on gcc or the linker yet that I haven't yet discovered. > 2) Are you able to step into other types of shared libraries (i.e, > ones that aren't dlopen'd? Yes. I tried to create a small testcase of a main compiled with Sun's cc and a separate .so with g++ and link them. Unfortunately things work fine in this case. The example that doesn't work is on quite a large system. Any other hints on what I might try next? Ed >From: Kevin Buettner >To: "Ed Harcourt" , gdb@sources.redhat.com >Subject: Re: stepping into a shared object >Date: Thu, 16 May 2002 15:47:52 -0700 >MIME-Version: 1.0 >Received: from cygnus.com ([205.180.83.203]) by hotmail.com with Microsoft >SMTPSVC(5.0.2195.4905); Thu, 16 May 2002 15:47:49 -0700 >Received: from romulus.sfbay.redhat.com (remus.sfbay.redhat.com >[172.16.27.252])by runyon.cygnus.com (8.8.7-cygnus/8.8.7) with ESMTP id >PAA05642;Thu, 16 May 2002 15:47:54 -0700 (PDT) >Received: (from kev@localhost)by romulus.sfbay.redhat.com (8.11.6/8.11.6) >id g4GMlqg19910;Thu, 16 May 2002 15:47:52 -0700 >Message-Id: <1020516224752.ZM19909@localhost.localdomain> >In-Reply-To: "Ed Harcourt" "stepping into a >shared object" (May 16, 3:22pm) >References: >X-Mailer: Z-Mail (4.0.1 13Jan97 Caldera) >Return-Path: kev@redhat.com >X-OriginalArrivalTime: 16 May 2002 22:47:49.0855 (UTC) >FILETIME=[B49ACEF0:01C1FD2B] > >On May 16, 3:22pm, Ed Harcourt wrote: > > > I have a main.c compiled using the Solaris C compiler (not C++). Version >is > > Sun WorkShop 6 update 1 C 5.2 2000/09/11. > > > > I have C++ objects built using g++ 2.95.2. Everything built with -g. An > > entry function f is extern "C". > > > > I linked the C++ objects and created a mylib.so using the Solaris linker >ld. > > > > main does a dlopen to get at the mylib.so. I can't step into f from >main. > > > > Sound familiar? Or should this work? > >It should work. > >Here are some things to try: > > 1) After the library is dlopen'd, are you able to place a breakpoint > in the shared library and continue to the breakpoint? > > 2) Are you able to step into other types of shared libraries (i.e, > ones that aren't dlopen'd? > >(This won't directly solve your problem, but knowing the answers might >help us to figure out what's going wrong.) > >Kevin _________________________________________________________________ Send and receive Hotmail on your mobile device: http://mobile.msn.com