Re: Issue 1336 in lilypond: skipTypesetting segfaults when set during a skipBars-induced MultiMeasureRest spanner

[lilypond]

Comment #7 on issue 1336 by percival.music.ca: skipTypesetting segfaults  
when set during a skipBars-induced MultiMeasureRest spanner
http://code.google.com/p/lilypond/issues/detail?id=1336

Depends what you mean by "root cause".  :)
There's two ways of debugging this kind of thing: the intelligent way, and  
the stupid way.

Intelligent: think about the lilypond internals, the data structures, the  
architecture, etc.  Figure out which object/engraver/translator is  
misbehaving.

Stupid: this segfault comes from trying to use a NULL pointer.  So figure  
out where that NULL pointer is coming from, by tracing back through the  
backtrace, ading printf() statements where appropriate, and comparing the  
text output from a successful program run (with a slightly modified input  
file), and the segfault program run.


You're thinking about it in the intelligent way.  I've been working through  
it in the stupid way.  Partly because I have relatively little knowledge of  
our internals, but partly because I've been working on this when my brain  
is fried from other stuff.