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Maniphest T76470

GPencil: Sequence interpolate crash when not enough frames
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Description

System Information
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: GeForce GTX 1060 3GB/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 445.87

Blender Version
Broken: version: 2.90 (sub 0), branch: master, commit date: 2020-05-05 22:30, hash: rBb0d6b0376324
Worked: (newest version of Blender that worked as expected)

Short description of error
bpy.ops.gpencil.interpolate_sequence() crashes blender under certain circumstances
It seems to happen when there is an animated layer with only one keyframe despite me trying to interpolate another layer which actually has 2 keyframes.
I'm not sure how to help reproduce it, here's the generated crash log

sixfanarts.crash.txt28 KBDownload

Revisions and Commits

rB Blender
rBc98240139e8e Fix T76470: GPencil sequence interpolate crash when not enough frames in layer

Event Timeline

Dmitrii (WeaselOnAStick) created this task.May 6 2020, 11:32 AM
Philipp Oeser (lichtwerk) changed the task status from Needs Triage to Needs Information from User.May 6 2020, 11:41 AM
Philipp Oeser (lichtwerk) added a subscriber: Philipp Oeser (lichtwerk).

I'm not sure how to help reproduce it

You could share your example .blend file here (this saves the devs time from setting it up themselves...)

Philipp Oeser (lichtwerk) added a project: Grease Pencil.May 6 2020, 11:41 AM
Antonio Vazquez (antoniov) renamed this task from GP interpolation operator crashes blender under certain circumstances to GPencil: interpolation operator crashes blender under certain circumstances.May 6 2020, 12:06 PM
Antonio Vazquez (antoniov) claimed this task.
Antonio Vazquez (antoniov) added a subscriber: Antonio Vazquez (antoniov).

Yes, we need a test file to reproduce the crash.

Antonio Vazquez (antoniov) changed the task status from Needs Information from User to Confirmed.May 6 2020, 12:15 PM
Antonio Vazquez (antoniov) changed the subtype of this task from "Report" to "Bug".

I can reproduce it.

Antonio Vazquez (antoniov) renamed this task from GPencil: interpolation operator crashes blender under certain circumstances to GPencil: Sequence interpolate crash when not enough frames.May 6 2020, 12:20 PM
Antonio Vazquez (antoniov) closed this task as Resolved by committing rBc98240139e8e: Fix T76470: GPencil sequence interpolate crash when not enough frames in layer.May 6 2020, 12:22 PM
Antonio Vazquez (antoniov) added a commit: rBc98240139e8e: Fix T76470: GPencil sequence interpolate crash when not enough frames in layer.
Dmitrii (WeaselOnAStick) added a comment.May 6 2020, 12:49 PM

Sorry, I didn't save the project file. Seems like it was a fluke I can't remember how to reproduce now. (not even with auto-saves)