Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Delivered-To: mailing list cygwin@cygwin.com Message-ID: <3CE3FA56.9030701@onevision.de> Date: Thu, 16 May 2002 20:28:38 +0200 From: Roland Schwingel Organization: OneVision Software AG User-Agent: Mozilla/5.0 (Windows; U; WinNT4.0; de-DE; rv:0.9.4) Gecko/20011128 Netscape6/6.2.1 X-Accept-Language: de-DE MIME-Version: 1.0 To: cygwin@cygwin.com Subject: Problem with gdb and DLLs and their symbols when setting breakpoints Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Hi.... =============================================================== Maybe it is a little bit offtopic, but maybe somewhere knows also what to do. I posted the same mail to the gdb mailinglist as well. =============================================================== I am working on a rather big project consisting of about 170 modules each is a shared library. On Windows everything is compiled under cygwin for mingwin into dlls. For debugging I am using gdb from cygwin. But there is a problem. I have also tried a couple of other versions of gdb/Insight from 5.0 to 5.2 beside the one that comes with cygwin. When the dlls are loaded they sometimes get relocated because of collisions with other dlls (even they are all linked with --enable-auto-image-base). Thats ok so far, the app is of course running. BUT it appears that only the code is relocated but not the symbols.... For being more easy: Imagine an application with 2 dlls called a.dll and b.dll with overlapping base addresses so the collide when loading. So a.dll gets loaded. b.dll will be loaded and relocated. And now try to set a breakpoint somewhere in b.dll. When saying something like that (gdb) b aFileFromBDll.m:2344 everything is ok at first, but when looking where the breakpoint is set it is not set in b.dll, but it is set somewhere in a.dll. When continuing the breakpoint in a.dll is reached but of course not the desired one in b.dll Thats truely bad. Is there someone who knows what to do? (Except giving each dll a unique non overlapping addressspace and so preventing collisions). Can the symbol tables be relocated also? Many thanks in advance, Roland Schwingel -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Bug reporting: http://cygwin.com/bugs.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/