Vertex Parenting & Triangle Vertex Parenting causes segfaults. #38421

New Issue

Terry Wallwork · 2014-01-31T17:41:40+01:00

Terry Wallwork commented

2014-01-31 17:41:40 +01:00

System Information
Operating system and graphics card

Blender Version
Broken: (example: 2.69.7 4b206af, see splash screen)
Worked: (optional)

Short description of error

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

I am using Blender 2.69 GIT REV 2014-01-31-09-35-00-d291d15
on a Fedora 20 Linux 64Bit Box.

I noticed the Blender segfaults when I Vertex Parent (single or triangle)
several objects to a single Parent object and then tab into Edit Mode on that
Parent Object.

In the attached a Blend file, It has 5 cone objects (child objects) and a Cube
(Parent Object). If I select all the cone objects and then shift select the
cube object and then parent them with CTRL P and select Vertex parent.
Once all the cones have been vertex parented to the cube, with the cube
still selected TAB in an out of edit Mode repeatedly.

For me Blender will segfault when this is done. This also happens with
Triangle Vertex Parenting.

It can happen with fewer objects acting as children but it is harder to make
happen but I have had it happen with just 2 child objects. Also moving
the cube in edit mode when the cones are vertex parented can also sometimes
crash it.

I have attached my system-info.txt file, a backtrace, a blend file to test with
and a video demo file.

system-info.txt

backtrace.txt

ParentingVertexAndTriangleCrash.blend

VertexSingleAndTriangleParentingCrash.mkv

**System Information** Operating system and graphics card **Blender Version** Broken: (example: 2.69.7 4b206af, see splash screen) Worked: (optional) **Short description of error** **Exact steps for others to reproduce the error** Based on a (as simple as possible) attached .blend file with minimum amount of steps I am using Blender 2.69 GIT REV 2014-01-31-09-35-00-d291d15 on a Fedora 20 Linux 64Bit Box. I noticed the Blender segfaults when I Vertex Parent (single or triangle) several objects to a single Parent object and then tab into Edit Mode on that Parent Object. In the attached a Blend file, It has 5 cone objects (child objects) and a Cube (Parent Object). If I select all the cone objects and then shift select the cube object and then parent them with CTRL P and select Vertex parent. Once all the cones have been vertex parented to the cube, with the cube still selected TAB in an out of edit Mode repeatedly. For me Blender will segfault when this is done. This also happens with Triangle Vertex Parenting. It can happen with fewer objects acting as children but it is harder to make happen but I have had it happen with just 2 child objects. Also moving the cube in edit mode when the cones are vertex parented can also sometimes crash it. I have attached my system-info.txt file, a backtrace, a blend file to test with and a video demo file. [system-info.txt](https://archive.blender.org/developer/F75713/system-info.txt) [backtrace.txt](https://archive.blender.org/developer/F75712/backtrace.txt) [ParentingVertexAndTriangleCrash.blend](https://archive.blender.org/developer/F75714/ParentingVertexAndTriangleCrash.blend) [VertexSingleAndTriangleParentingCrash.mkv](https://archive.blender.org/developer/F75715/VertexSingleAndTriangleParentingCrash.mkv)

Terry Wallwork commented

2014-01-31 17:41:40 +01:00

Changed status to: 'Open'