Crash on deleting curve handle with hook modifier #44497

New Issue

Marcus Richter · 2015-04-23T14:46:45+02:00

Marcus Richter commented

2015-04-23 14:46:45 +02:00

System Information
Windows 8 64 bit
8 core CPU
GTX 660ti
24Gb DDR3 RAM

Blender Version
Broken: Windows 2.74 official 64bit and newest development build from builder.blender.org
Worked: Worked somewhat on Linux, though still unstable (thanks to Stan_Pancakes for testing)

Short description of error
In the .blend file I made a curve with one handle (the middle one) hooked (ctrl+h) onto an empty.
Entering Edit mode, deleting the outer curve handle with no hook and then the hooked handle and leaving the handle in the origin point will make it crash either when:

clicking the delete action
returning to Object Mode
re-entering Edit Mode

Sometimes it also crashes when deleting the hooked handle and leaving the other two handles connected, returning to Object Mode, reentering Edit Mode, undoing action and then returning to Object Mode
Clearer explanation below :)

Exact steps for others to reproduce the error
Based on a (as simple as possible) attached .blend file with minimum amount of steps

Crash case 1:
1: On curve object, enter Edit Mode
2: Delete outer curve handle that is not in the origin point
3: Delete middle curve handle which is hooked onto the circle empty (crash?)
4: Return to Object Mode (crash?)
5: Re-enter Edit Mode (crash)

Crash case 2:
1: On curve object, enter Edit Mode
2: Delete middle curve handle which is hooked onto the circle empty
3: Return to Object Mode
4: Re-enter Edit Mode
5: Ctrl+Z undo the deletion of the middle curve handle
6: Return to Object Mode (crash)

I can replicate this problem completely on a new .blend with only the curve object and empty in it

**System Information** Windows 8 64 bit 8 core CPU GTX 660ti 24Gb DDR3 RAM **Blender Version** Broken: Windows 2.74 official 64bit and newest development build from builder.blender.org Worked: Worked somewhat on Linux, though still unstable (thanks to Stan_Pancakes for testing) **Short description of error** In the .blend file I made a curve with one handle (the middle one) hooked (ctrl+h) onto an empty. Entering Edit mode, deleting the outer curve handle with no hook and then the hooked handle and leaving the handle in the origin point will make it crash either when: - clicking the delete action - returning to Object Mode - re-entering Edit Mode Sometimes it also crashes when deleting the hooked handle and leaving the other two handles connected, returning to Object Mode, reentering Edit Mode, undoing action and then returning to Object Mode Clearer explanation below :) **Exact steps for others to reproduce the error** Based on a (as simple as possible) attached .blend file with minimum amount of steps Crash case 1: 1: On curve object, enter Edit Mode 2: Delete outer curve handle that is not in the origin point 3: Delete middle curve handle which is hooked onto the circle empty (crash?) 4: Return to Object Mode (crash?) 5: Re-enter Edit Mode (crash) Crash case 2: 1: On curve object, enter Edit Mode 2: Delete middle curve handle which is hooked onto the circle empty 3: Return to Object Mode 4: Re-enter Edit Mode 5: Ctrl+Z undo the deletion of the middle curve handle 6: Return to Object Mode (crash) I can replicate this problem completely on a new .blend with only the curve object and empty in it

Marcus Richter commented

2015-04-23 14:46:45 +02:00

Changed status to: 'Open'

Marcus Richter commented

2015-04-23 14:46:45 +02:00

Added subscriber: @mstuff

Marcus Richter commented

2015-04-23 14:51:22 +02:00

I forgot to add the .blend file :)10840.blend

A bit silly that I can't edit the report

I forgot to add the .blend file :)[10840.blend](https://archive.blender.org/developer/F166243/10840.blend) A bit silly that I can't edit the report

Marcus Richter commented

2015-04-23 14:52:25 +02:00

Also, Stan_Pancakes tested all the steps above and found that his system crashes just like mine - No difference in Windows or Linux

Stanislav Blinov commented

2015-04-23 15:23:11 +02:00

Added subscriber: @Stan_Pancakes

Stanislav Blinov commented

2015-04-23 15:23:11 +02:00

Indeed (Stan_Pancakes being me), tested on 64-bit Linux with both 2.74 and 2.74-ecb3362, crashes as described.

Antonis Ryakiotakis commented

2015-04-23 16:06:22 +02:00

Added subscriber: @Psy-Fi

Antonis Ryakiotakis commented

2015-04-23 16:06:22 +02:00

Confirmed, I'm checking it out

Antonis Ryakiotakis self-assigned this 2015-04-23 16:06:29 +02:00

Antonis Ryakiotakis commented

2015-04-23 17:16:35 +02:00

Nice catch, too separate issues too.

Antonis Ryakiotakis commented

2015-05-22 16:52:10 +02:00

Added subscriber: @Sergey

Antonis Ryakiotakis commented

2015-05-22 16:52:10 +02:00

Second issue is out of bounds issue, it's easy to make it not crash but fixing it loses the indices to the hook - hook won't work anymore.

First issue is a race condition from depsgraph, @Sergey may want to take a look.

Second issue is out of bounds issue, it's easy to make it not crash but fixing it loses the indices to the hook - hook won't work anymore. First issue is a race condition from depsgraph, @Sergey may want to take a look.

blender-admin commented

2015-05-26 19:36:18 +02:00

This issue was referenced by 4ffcc6ff56

This issue was referenced by 4ffcc6ff56b60d1cc69e12a80c9c2cacd604688f

Sergey Sharybin commented

2015-05-26 19:38:34 +02:00

Changed status from 'Open' to: 'Resolved'

Sergey Sharybin closed this issue

2015-05-26 19:38:34 +02:00

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Crash on deleting curve handle with hook modifier #44497