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Re: How to debug crashing lilypond sessions including \relative?

From: Mats Bengtsson
Subject: Re: How to debug crashing lilypond sessions including \relative?
Date: Fri, 16 Sep 2005 10:17:11 +0200
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.8) Gecko/20050511

It must be a problem with some lib file that's used by LilyPond.
It doesn't call any external application at that spot in the
Anyway, since nobody else has recognized the problem, it seems to
be something specific for your setup and I'm afraid you have to do
some debugging yourself. Just run the program from within gdb, run
the command "backtrace" when you get to the segmentation fault and
send the resulting output to the mailing list if you cannot figure
it out yourself.


Villum Sejersen wrote:
In july, I asked about a problem ( http://lists.gnu.org/archive/html/bug-lilypond/2005-07/msg00104.html ) then in version 2.7.2 but received no answer at all.

Still in all succeding versions, at present 2.7.10, my Lilypond linux setup (debian unstable/testing) crashes with a segmentation fault just after the grob count, whenever the script contains \relative. Without \relative scripts compile flawlessly, producing both pdf and midi. Most annoying! So at the moment I am stuck with the Windows version only on another pc.

The bug must lie somewhere in an application, lilypond is calling at compile time, but which one? Since my first message I have updated to ESP-Ghostscript 8.15rc4 and reinstalled/reconfigured every python packet on my box, but without any changes.

How do I debug the behaviour of lilypond at crash-time? The last message recieved before the crash is the grob count and a number, then the segmentation fault happens.

        Mats Bengtsson
        Signal Processing
        Signals, Sensors and Systems
        Royal Institute of Technology
        SE-100 44  STOCKHOLM
        Phone: (+46) 8 790 8463                         
        Fax:   (+46) 8 790 7260
        Email: address@hidden
        WWW: http://www.s3.kth.se/~mabe

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