Crash when ctrl-dragging VST track with more than one clip to pattern editor
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- Dominant language
- C++
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Description
### System Information
Windows 10
### LMMS Version(s)
Version 1.3.0-alpha.1.1021+795d39d (win32/x86_64, Qt 5.15.18, GCC 15.2.0)
### Most Recent Working Version
_No response_
### Bug Summary
When ctrl-dragging a Vestige track loaded with a VST from the song editor to the pattern editor, LMMS will crash if that track has more than one clip in it.
### Expected Behaviour
LMMS should not crash.
### Steps To Reproduce
- Create a Vestige track in the song editor
- Load a VST into it
- Add two or more clips to it
- Ctrl-drag the track to the pattern editor
### Logs
_No response_
### Screenshots / Minimum Reproducible Project
_No response_
### Please search the issue tracker for existing bug reports before submitting your own.
- [x] I have searched all existing issues and confirmed that this is not a duplicate.
Contributor guide
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Reproduce the crash in LMMS by loading a VST into a Vestige track, adding multiple clips, and ctrl-dragging it from the song editor to the pattern editor. Trace the drag-handling path between those editors; done means the same action no longer crashes when the track contains more than one clip.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp
- Domain
- desktop
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Quiet
- Clarity
- Mostly clear
- Newbie friendliness
- 55/100