Package: abcmidi
Version: 20220128-1
Severity: important

Dear Maintainer,

This abc file results in bad midi, if converted by abcmidi as delvered by 
Debian:

---------------------------
%abc-2.2
X:1
T:Test
M:C|
L:1/4
Q:1/4=135
%________________________________________________
% %MIDI gchordoff
V:S clef=treble octave=0
% %MIDI gchordoff
V:C clef=treble octave=0
% %MIDI gchordoff
K:C
%________________________________________________
%%score (C S)
%%MIDI gchordoff
%
[V:S] z3/ C/ C<D | E2 cc  | cBAG    | EEE>D   | E z/ G/ GA | G D3   |     FFF 
G/    E/  | 
[V:C] "C" x4     | "C" x4 | "am" x4 | "em" x4 |      x4    | "G" x4 | "G7" x3 
x/ "C" x/ | 
--------------------------------------

The same abc2midi version downloaded from here gives the expected midi result:

http://abcplus.sourceforge.net/#abcmidi


Using '-g' instead of '-O2' in the Makefile seems to make the difference:

> diff Makefile Makefile.debian
41c41
< CFLAGS = -DANSILIBS  -g
---
> CFLAGS = -DANSILIBS  -O2


Original source code is here: https://github.com/sshlien/abcmidi

Issue has been discussed in https://groups.io/g/abcusers/, 
subject 'abc2midi (4.66 January 27 2022): "no default gchord string for this 
meter"'

Earlier versions in Debian (from 2019) also seem to produce correct output.

-- System Information:
Debian Release: bookworm/sid
  APT prefers stable-security
  APT policy: (500, 'stable-security'), (500, 'testing'), (500, 'stable'), 
(500, 'oldstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 5.15.0-3-amd64 (SMP w/4 CPU threads)
Kernel taint flags: TAINT_WARN
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/bash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages abcmidi depends on:
ii  libc6  2.33-5

abcmidi recommends no packages.

Versions of packages abcmidi suggests:
ii  abcm2ps                          8.14.12-7
ii  evince [postscript-viewer]       41.3-1
ii  ghostscript [postscript-viewer]  9.55.0~dfsg-3
ii  gv [postscript-viewer]           1:3.7.4-2+b1
ii  okular [postscript-viewer]       4:21.08.3-1
ii  timidity                         2.14.0-8+b1

-- no debconf information

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