Re: Abrupt end of interpreting music (segmentation fault)

[Przemysław Pawełczyk]

On Sun, Feb 19, 2012 at 17:20, Jay Anderson <address@hidden> wrote:
> On Sun, Feb 19, 2012 at 8:32 AM, Phil Holmes <address@hidden> wrote:
>> I don't normally install LilyPond on my Linux box - I simply run a
>> self-compiled version.  It's 64-bit Ubuntu and on this, your file compiles
>> and runs fine.  So I'm assuming (if you know better, please say) that this
>> is unlikely to be generic 64-bit, but Debian 64-bit specific.  We'll
>> certainly pick it up as a bug, but it's likely to be hard to fix, bearing in
>> mind the fact that our standard development environment is Ubuntu.
>
> I also run a 64-bit Ubuntu (11.10, Linux 3.0.0-15-generic) box and
> this example segfaults on an installed 2.15.30, but not on lilypond
> built from master. So perhaps this bug was somehow fixed? Every once
> in a while I get segfaults on 64-bit related to the
> Span_bar_stub_engraver (I tracked it down to the specific commit at
> one point: 
> http://lists.gnu.org/archive/html/lilypond-devel/2012-01/msg00201.html).
> Adding this into the top of the attached example avoids the segfault
> in 2.15.30:
>
> \layout
> {
>  \context
>  {
>    \PianoStaff
>    \remove "Span_bar_stub_engraver"
>  }
> }
>
> In my case I had a dynamic section which I hadn't filled in yet. I
> haven't looked at this example too much in depth, but it seems similar
> enough that the same workaround fixed it.

I'm not sure. As it stands out in my second mail
http://thread.gmane.org/gmane.comp.gnu.lilypond.bugs/33663/focus=33693
(copy-pasted summary file of LilyPond x64 tests available here:
http://paste.przemoc.net/lilypond/abrupt-end-of-interpreting-music/)
it's not something new, it was there in 2.15.23-27, and magically
reappeared in 2.15.30. It may be some mandelbug that is really hard to
track down.

More importantly there are many ways to get rid of this segfault, I
mentioned a few in the first mail. This makes the matter even more
vague.

Regards.

-- 
Przemysław 'Przemoc' Pawełczyk
http://przemoc.net/