From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 27674 invoked by alias); 24 Jun 2003 22:42:04 -0000 Mailing-List: contact gdb-patches-help@sources.redhat.com; run by ezmlm Precedence: bulk List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-patches-owner@sources.redhat.com Received: (qmail 9444 invoked from network); 24 Jun 2003 21:25:32 -0000 Received: from unknown (HELO mx1.redhat.com) (66.187.233.31) by sources.redhat.com with SMTP; 24 Jun 2003 21:25:32 -0000 Received: from int-mx1.corp.redhat.com (int-mx1.corp.redhat.com [172.16.52.254]) by mx1.redhat.com (8.11.6/8.11.6) with ESMTP id h5OLPWH03610 for ; Tue, 24 Jun 2003 17:25:32 -0400 Received: from pobox.corp.redhat.com (pobox.corp.redhat.com [172.16.52.156]) by int-mx1.corp.redhat.com (8.11.6/8.11.6) with ESMTP id h5OLPVI08234 for ; Tue, 24 Jun 2003 17:25:31 -0400 Received: from localhost.redhat.com (romulus-int.sfbay.redhat.com [172.16.27.46]) by pobox.corp.redhat.com (8.11.6/8.11.6) with ESMTP id h5OLPSg17665 for ; Tue, 24 Jun 2003 17:25:28 -0400 Received: by localhost.redhat.com (Postfix, from userid 469) id 982272CA2F; Tue, 24 Jun 2003 17:32:21 -0400 (EDT) From: Elena Zannoni MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <16120.50020.981719.332548@localhost.redhat.com> Date: Tue, 24 Jun 2003 22:42:00 -0000 To: gdb-patches@sources.redhat.com Cc: Mark Kettenis Subject: Re: [PATCH/i386newframe] Add asssertion to CFI frame unwinder In-Reply-To: <16119.32928.499250.823983@localhost.redhat.com> References: <200305291602.h4TG2HVr031955@elgar.kettenis.dyndns.org> <16119.32928.499250.823983@localhost.redhat.com> X-SW-Source: 2003-06/txt/msg00757.txt.bz2 Elena Zannoni writes: > Mark Kettenis writes: > > This assertion can unfortunately be triggered. Don't know how to fix > > the bug yet, but this makes clear there is a bug. > > > > Mark > > > > Index: ChangeLog > > from Mark Kettenis > > > > * dwarf-frame.c (dwarf2_frame_cache): Assert that we have a FDE. > > > > Index: dwarf-frame.c > > =================================================================== > > RCS file: /cvs/src/src/gdb/Attic/dwarf-frame.c,v > > retrieving revision 1.1.2.6 > > diff -u -p -r1.1.2.6 dwarf-frame.c > > --- dwarf-frame.c 23 May 2003 20:18:32 -0000 1.1.2.6 > > +++ dwarf-frame.c 29 May 2003 15:47:12 -0000 > > @@ -483,6 +483,7 @@ dwarf2_frame_cache (struct frame_info *n > > > > /* Find the correct FDE. */ > > fde = dwarf2_frame_find_fde (&fs->pc); > > + gdb_assert (fde != NULL); > > > > /* Extract any interesting information from the CIE. */ > > fs->data_align = fde->cie->data_alignment_factor; > > > I am running into this in several cases running the testsuite on x86. > For instance for me callfuncs.exp just doesn't do anything, because > the assertion is triggered at startup. > what exactly is happening? > > thanks > elena Well, this is a problem with the infimous separate debug info. The .debug_blah sections are in one objfile (the .debug one), while the .eh_frame is in another (the stripped executable). However, there is an empty .eh_frame in the .debug file as well. This one is the one that screws things up. I'll post a patch separately. elena