How to debug crashing lilypond sessions including \relative?

[Villum Sejersen]

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.

--
yours sincerely  Villum Sejersen

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