Re: Strange LilyPond crash

[Simon Albrecht]

On 16.11.2015 11:27, Marc Hohl wrote:
> Hi list,
>
> I am currently reworking some older stuff that compiled perfectly 
> under 2.13.x
>
> Yes, I used convert-ly on all files, but nevertheless, I encountered a 
> strange problem:
>
> I have a drum part, consisting of an upper and a lower DrumVoice, and 
> if I try to compile the full Drum score, I get a segfault.
>
> I tried to reduce the number of notes and realized that if I include 
> either drum voice, everything is fine.
>
> Next, I included the complete upper voice and commented out parts of
> the lower drum voice. Now lilypond compiles upto a certain point in 
> the score, but if I include *one more note*, I get the segfault again.
>
> Well, we talk about 70 measures with eighths, quarter notes and some 
> triplets, so I don't believe that LilyPond runs out of memory.
>
> I am currently using 2.19.32.
>
> Any ideas of what's going wrong here?

Not off the top of my head. I think there’s nothing for it except 
further testing. Please post the smallest version of the code you could 
find which sports the error. One might check
– with which version the error first occurs
– using the same number of notes, but uniform in pitch and/or rhythm
– using normal Staff and Voices (though this will likely not show the 
problem)
– etc.
in order to find some other way of boiling it down.
And if all of this doesn’t work, then you already have got a minimal 
example to use for a bug report – ‘from which nothing can be removed 
without making the bug disappear’.
That’s all ‘wisdom’ I can contribute…

Yours, Simon