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Re: Using Stem.french-beaming causes segfault


From: Jean Menezes da Rocha
Subject: Re: Using Stem.french-beaming causes segfault
Date: Mon, 2 Nov 2015 20:46:26 -0200

Thanks for the tip, Malte! When trying to produce a minimal example I was able to find the exact condition that causes this issue: when a beamed group of 16ths *ends with* a rest, the segfault is produced.
For instance, the code

\relative c' {
  \override Stem.french-beaming=##t
  c16[ d e r]
}

produces a segfault, while neither

\relative c' {
  \override Stem.french-beaming=##t
  c16[ d e f]
}

or 

\relative c' {
  \override Stem.french-beaming=##t
  r16[ d e f]
}

produce the error.

What now???

Thanks for your attention!

On Mon, Nov 2, 2015 at 8:25 PM, Jean Menezes da Rocha <address@hidden> wrote:
Sorry for replying to my own message so hastily, but making further tests I may have found something
interesting:
I have many beams going over rests. If I remove every manual beaming over rests, the problem disappears
and everything works fine (except for the fact that beaming over rests is important information in my music).
It looks like some bug that breaks the french-beaming functionality when beams extend over rests. I tried
disabling the stemlets to see if they had anything to do with this issue, but the segfault persisted.

Best regards!

On Mon, Nov 2, 2015 at 8:07 PM, Jean Menezes da Rocha <address@hidden> wrote:
Hello,

I am trying to compile a score and its parts using lilypond version 2.19.30. If I activate french-beaming (using \override Stem.french-beaming = ##t in the \context \Staff), the program returns a segfault. When french-beaming is not active, the compilation runs nicely. I have attached to this message one of the .ly files that is suffering from this problem (there are others that cause the same issue) and a full output/backtrace from gdb.
When trying to compile using 2.18.2, the problem is the same.

Thanks for your attention!

--
Jean Menezes da Rocha
Compositor
Professor -- Faculdades Est
Mestre e Doutorando em Composição pela Universidade Federal da Bahia



--
Jean Menezes da Rocha
Compositor
Professor -- Faculdades Est
Mestre e Doutorando em Composição pela Universidade Federal da Bahia



--
Jean Menezes da Rocha
Compositor
Professor -- Faculdades Est
Mestre e Doutorando em Composição pela Universidade Federal da Bahia

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