Re: Issue 1355 in lilypond: Segfault with define-music-function

[lilypond]

Updates:
        Status: Started
        Owner: n.puttock

Comment #1 on issue 1355 by n.puttock: Segfault with define-music-function
http://code.google.com/p/lilypond/issues/detail?id=1355

There's a thinko in stream-event.cc which means ly:stream-event? is broken:  
it uses the macro IMPLEMENT_TYPE_P () to define the type predicate for  
Stream_event.  This should only be used for base-class smobs since it needs  
initializing via IMPLEMENT_SMOBS ().

ly:stream-event? is functionally equivalent to ly:prob?: it can't  
distinguish between stream events and music.