Comment #9 on issue 2010 by [email protected]: \lyricsto may turn into a
voice-mangling zombie when both parents die at the same time
https://code.google.com/p/lilypond/issues/detail?id=2010
And here is what I suspect is responsible for resolving the deadlock:
void
Timing_translator::stop_translation_timestep ()
{
Global_context *global = get_global_context ();
if (to_boolean (get_property ("timing"))
&& !to_boolean (get_property ("skipBars")))
{
Moment barleft = (measure_length () - measure_position (context ()));
Moment now = now_mom ();
if (barleft > Moment (0))
{
Moment nextmom = now + barleft;
nextmom.grace_part_ = Rational (0);
global->add_moment_to_process (nextmom);
}
}
}
And indeed, when removing that add_moment_to_process and rerunning the
example given in issue 1551:
\new Staff \relative c'' {
<<
\new Voice = "Testing" { f,4 f f f }
\new Lyrics \lyricsto "Testing" { hm hm hm hm }
>>
d4 d d d | c c c c
}
the music no longer resumes after the first bar.
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