Re: Issue 2356 in lilypond: Lilypond segfaults

[lilypond]

Comment #28 on issue 2356 by address@hidden: Lilypond segfaults
http://code.google.com/p/lilypond/issues/detail?id=2356

Since axis_groups_ is used for mapping grobs to contexts (and not the other  
way round), it would appear to make sense to implement it as a weak-key  
Scheme hash table.  That way, it would at least clean itself up by and by  
as the key grobs are getting garbage-collected.

I am very unhappy with keeping pointers to possibly dead grobs in a C++ map  
that is in active use.  And they keep alive contexts as values in the map  
that may never be looked at again.