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Re: Core dump for tremolo

From: David Kastrup
Subject: Re: Core dump for tremolo
Date: Fri, 15 Sep 2017 23:20:57 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/26.0.50 (gnu/linux)

Knut Petersen <address@hidden> writes:

> Am 23.10.2016 um 18:17 schrieb Thomas Morley:
>> 2016-10-23 17:51 GMT+02:00 Rutger Hofman <address@hidden>:
>>> Good evening bug list,
>>> I get a core dump for version 2.19.39 (and also 2.19.48) but not for 2.18.2
>>> for this program:
>>> \version "2.19.39"
>>> \relative c' {
>>>      c8:32 c32 c c c
>>> }
>>> Preprocessing graphical objects...lilypond:
>>> /home/gub/NewGub/gub/target/linux-64/src/lilypond-git.sv.gnu.org--lilypond.git-release-unstable/flower/include/interval.hh:227:
>>> T Interval_t<T>::center() const [with T = double]: Assertion `!is_empty ()'
>>> failed.
>>> Aborted (core dumped)
>>> Rutger Hofman
>>> Amsterdam
> This is still an issue of current master ... has anybody investigated
> the problem ?

I don't know whether we have an issue in the tracker for this, but it
will always be an issue since there is no valid output for this input
(I don't think one can have both a flag and a stem tremolo).  Aborting
with a core dump (and a cryptic message not obviously related to the
input) is of course about the worst possible diagnostic, but we would
not be able to produce valid graphics either.

David Kastrup

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