[Lilypond-auto] [LilyIssues-auto] [testlilyissues:issues] #5234 Segfault when music is empty and only MIDI file is generated

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• summary: Segfault with midi and \new StaffGroup --> Segfault when music is empty and only MIDI file is generated
• Comment:

It's not only with StaffGroup, but also with Staff or Voice.
If \layout is present, the 'no music' warning is printed but the complation completes without crashing.
If only \midi is enabled, there's a crash.

\version "2.19.84"

\score {
  \new Staff {}
  %\new Voice { }
  %\layout {}
  \midi {}
}

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[issues:#5234] Segfault when music is empty and only MIDI file is generated

Status: Accepted
Created: Wed Nov 08, 2017 11:26 PM UTC by Simon Albrecht
Last Updated: Wed Nov 08, 2017 11:26 PM UTC
Owner: nobody
Attachments:

• debug.ly (63 Bytes; text/x-lilypond)
• debug.midi (0 Bytes; audio/midi)

The following code generates a segfault using 2.19.80 (Ubuntu 16.04, 64-bit):

\version "2.19.80"
\score {
  \new StaffGroup {}
  \midi {}
}

$ lilypond debug.ly
GNU LilyPond 2.19.80
Processing `debug.ly'
Parsing...
Interpreting music...
warning: no music found in score
MIDI output to `debug.midi'...Segmentation fault (core dumped) 

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