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Re: Assertion !is_empty() failed - yet again

From: David Kastrup
Subject: Re: Assertion !is_empty() failed - yet again
Date: Fri, 26 Apr 2019 16:56:16 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux)

Andrew Bernard <address@hidden> writes:

> Lilypond 2.19.83.

That one or current master?  In the latter, it may be fixed.

> Yet again I see this error:
> Drawing systems...
> Finding the ideal number of pages...
> Fitting music on 15 or 16 pages...
> Drawing systems...lilypond:
> /home/gub/NewGub/gub/target/linux-64/src/lilypond-git.sv.gnu.org--lilypond.git-stable-test/flower/include/interval.hh:227:
> T Interval_t<T>::center() const [with T = double]: Assertion `!is_empty ()'
> failed.
> Aborted (core dumped)
> make: *** [Makefile:57: sq1-215.pdf] Error 134
> After only about 30 pages of dense string quartet music, now happens when I
> just add one more note. This came up for me before with tuplets, but now a
> plain note triggers this.
> How do we move forward on solving this? Once more, irritatingly for me and
> for all, I don;t know how to make an MWE to stimulate this.
> Perhaps resort to gdb backtrace again?
> Andrew

David Kastrup

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