On Sun, Jan 2, 2011 at 2:14 AM, Matthias Kilian <k...@outback.escape.de>wrote:
> On Sat, Jan 01, 2011 at 02:10:04PM +0100, Matthias Kilian wrote:
> > I don't know why gdb doesn't find paper-column.hh, but anyaway...
> > it looks like Item::get_column() returns NULL, because its parent's
> > get_column() returns NULL (I checked that the parent on the X_AXIS
> > itself is not NULL).
>
> Bisected to this one (cc'd Neil):
>
>
> commit 6d28aebbaaab1be9961a00bf15a1ef93acb91e30
> Author: Neil Puttock <n.putt...@gmail.com>
> Date: Mon Sep 6 22:49:28 2010 +0100
>
> Fix metronome alignment.
>
> Don't align on KeySignature unless explicitly requested via
> 'break-align-symbols and make order of 'break-align-symbols
> significant.
>
> * remove `key-signature' from 'break-align-symbols
>
> * acknowledge break_alignment, and set this as X-parent
> instead of break_aligned, but only if found break_aligned
> is visible
>
> * add regression test to test ordering
>
> * tweak existing test to reflect change in default for
> 'break-align-symbols
>
> [...]
>
>
> I tried the diff below, which `fixed' the segfault, but it may be
> completely wrong (I'm currently not familiar with the LilyPond code
> at all). Unfortunately, I don't have a new enough ImageMagick on my
> system, so I can't run the regression tests.
>
> diff --git a/lily/metronome-engraver.cc b/lily/metronome-engraver.cc
> index 0a41fc9..e34c0ad 100644
> --- a/lily/metronome-engraver.cc
> +++ b/lily/metronome-engraver.cc
> @@ -95,7 +95,10 @@ Metronome_mark_engraver::acknowledge_break_aligned
> (Grob_info info)
> && safe_is_member (g->get_property ("break-align-symbol"),
> text_->get_property ("break-align-symbols"))
> && Item::break_visible (g))
> - support_ = g;
> + {
> + support_ = g;
> + text_->set_parent (g, X_AXIS);
> + }
> }
>
In your original backtrace, is the X_AXIS parent of the Item in frame #2
0x0? If so, I'm fine with the patch.
Cheers,
Joe
_______________________________________________
lilypond-devel mailing list
lilypond-devel@gnu.org
http://lists.gnu.org/mailman/listinfo/lilypond-devel
