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 X-Authentication-Warning: frothingslosh.sfbay.redhat.com: rth set sender to rth@redhat.com using -f Date: Tue, 23 Nov 2004 16:32:40 -0800 From: Richard Henderson To: Danny Smith Cc: gcc@gcc.gnu.org, Cygwin , mingw-dvlpr Subject: Re: stdcall lib functions with exception throwing callbacks vs Dwarf2 EH Message-ID: <20041124003240.GA6028@redhat.com> Mail-Followup-To: Richard Henderson , Danny Smith , gcc@gcc.gnu.org, Cygwin , mingw-dvlpr References: <001701c4d1ab$949322e0$0a6d65da@DANNY> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <001701c4d1ab$949322e0$0a6d65da@DANNY> User-Agent: Mutt/1.4.1i On Wed, Nov 24, 2004 at 11:27:11AM +1300, Danny Smith wrote: > Before I pull any more hair out trying, does any one have any hints on > how to use an MD_FALLBACK_FRAME_STATE_FOR to workaround ... That would be wrong. I think the most likely explanation is that there's a bug in the dwarf2 generator for stdcall functions with -fomit-frame-pointer, and the problem should be attacked there. If you've got a call that takes 12 bytes of arguments on the stack and pop them on return, then the unwind info should look like # DW_CFA_GNU_args_size 12 call foo # DW_CFA_def_cfa_offset r~ -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/