Segfault when copying object data of linked object #49905

New Issue

FeepingCreature · 2016-11-01T23:00:19+01:00

FeepingCreature commented

2016-11-01 23:00:19 +01:00

I'm doing a MagLev mod for Space Engineers, and all the rail pieces are just linked to the same 1x1 rail piece with array and curve modifiers.
I'd accidentally kept a curve piece linked to the original, so I tried to make a single copy. Doing so reproducibly crashes Blender.

This happens on Windows 7, 64-bit, 2.77, 2.78 and November 1 Nightly. I used an addon for Space Engineers modding, but the issue happens when it's disabled as well.

Steps to reproduce:

Open attached (minimal) Blender file HoverRailCrashing.blend.
On the tool panel on the right, click - to make a single-user copy. Blender crashes with Error: EXCEPTION_ACCESS_VIOLATION.

Interestingly, the crash does not happen if you delete the collision geometry on layer 2 first.

I'm doing a MagLev mod for Space Engineers, and all the rail pieces are just linked to the same 1x1 rail piece with array and curve modifiers. I'd accidentally kept a curve piece linked to the original, so I tried to make a single copy. Doing so reproducibly crashes Blender. This happens on Windows 7, 64-bit, 2.77, 2.78 and November 1 Nightly. I used an addon for Space Engineers modding, but the issue happens when it's disabled as well. Steps to reproduce: * Open attached (minimal) Blender file [HoverRailCrashing.blend](https://archive.blender.org/developer/F390200/HoverRailCrashing.blend). * On the tool panel on the right, click - [x] to make a single-user copy. Blender crashes with Error: EXCEPTION_ACCESS_VIOLATION. Interestingly, the crash does not happen if you delete the collision geometry on layer 2 first.

FeepingCreature commented

2016-11-01 23:00:19 +01:00

Changed status to: 'Open'

FeepingCreature commented

2016-11-01 23:00:19 +01:00

Added subscriber: @FeepingCreature

FeepingCreature commented

2016-11-02 15:52:54 +01:00

Hit another crash. I suspect it's the same one. This one happens because I have the materials linked to object instead of data? Same steps to reproduce, click - [x] on the right and it crashes.

File: HoverRailCrashing2.blend

Hit another crash. I *suspect* it's the same one. This one happens because I have the materials linked to object instead of data? Same steps to reproduce, click - [x] on the right and it crashes. File: [HoverRailCrashing2.blend](https://archive.blender.org/developer/F390886/HoverRailCrashing2.blend)

Bastien Montagne commented

2016-11-04 09:55:10 +01:00

Added subscriber: @mont29

Bastien Montagne self-assigned this 2016-11-04 09:55:10 +01:00

Bastien Montagne commented

2016-11-04 09:55:10 +01:00

Yep, both cases have same cause, fix incoming.