Crash on loading Feedback Delay Line effect in 1.3.0

[crystalreef22]

System Information

macOS Sonoma 14.5 - Apple M1 Pro (arm64), 16GB RAM.

LMMS Version(s)

1.3.0-alpha.1.102+g89fc6c960

Most Recent Working Version

1.2.2

Bug Summary

On the LMMS 1.3.0 alpha, loading any Feedback Delay Line effect causes a crash (most of the time).

Expected Behaviour

The effect should load properly. The Echo Delay Line seems to be working.

Steps To Reproduce

Method 1:

1. Create an empty project in LMMS 1.3.0 alpha
2. Add a Feedback Delay Line to the FX channel. Any value for maximum delay should be fine
   • This also occurs when adding the feedback delay line to an instrument (e.g. triple oscillator)
3. LMMS should crash

Method 2:

1. Open LMMS 1.2.2
2. Add an instrument to the song editor and add a feedback delay line to its effect chain
3. Save the instrument as a preset
4. Save the project and close LMMS 1.2.2
5. Create a new project in LMMS 1.3.0 alpha
6. Click on the preset
   • LMMS Crashes
7. Or: open the saved project in LMMS 1.3.0 alpha
   • LMMS Crashes

Attached is a LMMS file created in version 1.2.2, which has a tripleoscillator and a Feedback Delay Line. Opening it should crash LMMS 1.3.0 alpha.

Logs

For some reason, the macOS crash reporting window only appeared the first few times I triggered the crash, so I do not have crash report available

When starting LMMS from terminal, here is the output:

Click to expand

@ ~ % /Applications/LMMS.app/Contents/MacOS/lmms   
error: failed to open file /Library/Audio/Plug-Ins/LV2/.DS_Store/manifest.ttl (Not a directory)
lilv_world_load_file(): error: Error loading file `file:///Library/Audio/Plug-Ins/LV2/.DS_Store/manifest.ttl'
lilv_world_load_bundle(): error: Error reading file:///Library/Audio/Plug-Ins/LV2/.DS_Store/manifest.ttl
Lv2 plugin SUMMARY: 0 of 0  loaded in 0 msecs.
trying midi apple...
openDevices
Device name:Network
 is online: Yes
------
Device name:IAC Driver
 is online: No
  Entity: Bus 1
	Source: 'Bus 1'
	Source name: 'IAC Driver:Bus 1'
openMidiReference refName 'IAC Driver:Bus 1'
openMidiReference registeredName 'IAC Driver:Bus 1'
	Destination: 'Bus 1'
	Destination name: 'IAC Driver:Bus 1'
openMidiReference refName 'IAC Driver:Bus 1'
openMidiReference registeredName 'IAC Driver:Bus 1'
------
Device name:Bluetooth
 is online: Yes
------
Device name:CASIO USB-MIDI
 is online: No
  Entity: CASIO USB-MIDI
	Source: 'CASIO USB-MIDI'
	Source name: 'CASIO USB-MIDI:CASIO USB-MIDI'
openMidiReference refName 'CASIO USB-MIDI:CASIO USB-MIDI'
openMidiReference registeredName 'CASIO USB-MIDI:CASIO USB-MIDI'
	Destination: 'CASIO USB-MIDI'
	Destination name: 'CASIO USB-MIDI:CASIO USB-MIDI'
openMidiReference refName 'CASIO USB-MIDI:CASIO USB-MIDI'
openMidiReference registeredName 'CASIO USB-MIDI:CASIO USB-MIDI'
------
m_inputDevices::
  key='CASIO USB-MIDI:CASIO USB-MIDI'
  key='IAC Driver:Bus 1'
m_outputDevices::
  key='CASIO USB-MIDI:CASIO USB-MIDI'
  key='IAC Driver:Bus 1'
Returning midi apple
applyPortMode displayName:''
applyPortMode displayName:''

Now I will try to trigger the bug

objc[33757]: Attempt to use unknown class 0x10caf0130.
zsh: abort      /Applications/LMMS.app/Contents/MacOS/lmms

Screenshots / Minimum Reproducible Project

test7.mmpz.zip

Please search the issue tracker for existing bug reports before submitting your own.

• I have searched all existing issues and confirmed that this is not a duplicate.

[DomClark]

I think this may have been fixed in LMMS/cmt#7, which was pulled into LMMS in #6973. Would you mind testing a nightly build and confirming whether it is fixed?

[crystalreef22]

Just tested this and #7404 on the nightly versions:

• lmms-1.3.0-alpha.1.678+g74c73e584-mac12.7-x86_64
• lmms-1.3.0-alpha.1.678+g74c73e584-mac14-arm64

It does appear to be fixed