Skin modifier crashes with certain meshes #39775

New Issue

trew trew · 2014-04-17T20:27:07+02:00

trew trew commented

2014-04-17 20:27:07 +02:00

Update

The addon is irrelevant, these meshes crash skin modifier:

skin_crash1.blend here is a mesh which crashes blender (without having to use the modifier)
Simply enable skin modifier -> crash.

This file is the same mesh but uses a shape-key which lets you blend into the degenerate case. Interestingly it asserts in a different place.
skin_crash3.blend

Original report

System Information
linux

Blender Version
Broken: (2.70.2 14/4/2014)

Short description of error
skin modifier crash when i use addone tree
http://blenderthings.blogspot.nl/p/the-spacetree-blender-add-on.html

Exact steps for others to reproduce the error
add tree with this plagin http://blenderthings.blogspot.nl/p/the-spacetree-blender-add-on.html
add skin modifier
crash

It does not matter if I add skin manually or via plug-in
this is the file{F85111}

i jest try to do what that he does
https://www.youtube.com/watch?v=aStaYw_gB7Y

Update ---- The addon is irrelevant, these meshes crash skin modifier: [skin_crash1.blend](https://archive.blender.org/developer/F92428/skin_crash1.blend) here is a mesh which crashes blender (without having to use the modifier) Simply enable skin modifier -> crash. ---- This file is the same mesh but uses a shape-key which lets you blend into the degenerate case. Interestingly it asserts in a different place. [skin_crash3.blend](https://archive.blender.org/developer/F92429/skin_crash3.blend) Original report ---- **System Information** linux **Blender Version** Broken: (2.70.2 14/4/2014) **Short description of error** skin modifier crash when i use addone tree http://blenderthings.blogspot.nl/p/the-spacetree-blender-add-on.html **Exact steps for others to reproduce the error** add tree with this plagin http://blenderthings.blogspot.nl/p/the-spacetree-blender-add-on.html add skin modifier crash It does not matter if I add skin manually or via plug-in this is the file{[F85111](https://archive.blender.org/developer/F85111/smpl_tree_-_skin_modifier_crash.blend)} i jest try to do what that he does https://www.youtube.com/watch?v=aStaYw_gB7Y

trew trew commented

2014-04-17 20:27:07 +02:00

Changed status to: 'Open'

Campbell Barton was assigned by trew trew

2014-04-17 20:27:07 +02:00

trew trew commented

2014-04-17 20:27:07 +02:00

Added subscriber: @b_d

Bastien Montagne commented

2014-04-21 20:44:55 +02:00

Added subscriber: @mont29

Bastien Montagne commented

2014-04-21 20:44:55 +02:00

Can confirm the crash (segfault on NULL pointer)...

Campbell Barton commented

2014-04-22 13:49:04 +02:00

Cant redo the bug, tested with addon from git repo: 806b162d64e4a2aaf7104f09f1bf53a29c0730a4

Bastien Montagne commented

2014-04-22 14:30:39 +02:00

Added subscriber: @ideasman42

Bastien Montagne commented

2014-04-22 14:30:39 +02:00

@ideasman42 did you try with an asan debug build? I’ve noted recently quite a bit of crashing situations are not easily reproducible with release builds on Linux, for some reason…

For me the crash was immediate, will add a backtrace asap.

@ideasman42 did you try with an asan debug build? I’ve noted recently quite a bit of crashing situations are not easily reproducible with release builds on Linux, for some reason… For me the crash was immediate, will add a backtrace asap.

Campbell Barton commented

2014-04-30 11:51:40 +02:00

Could someone post a stack trace, or a blend file? - I cant redo this bug after many attempts.

Bastien Montagne commented

2014-04-30 20:34:41 +02:00

Well, I could not reproduce either with latest master… @b_d, please re-test with a build from our buildbot.

Well, I could not reproduce either with latest master… @b_d, please re-test with a build from our [buildbot](http://builder.blender.org/download).

trew trew commented

2014-04-30 21:29:13 +02:00

i try today with last buildbot and blender crash.

this video with built before few days but that same thing with version from today.
report_bug_skin_modifier_.mp4
blender.crash.txt

i try today with last buildbot and blender crash. this video with built before few days but that same thing with version from today. [report_bug_skin_modifier_.mp4](https://archive.blender.org/developer/F86467/report_bug_skin_modifier_.mp4) [blender.crash.txt](https://archive.blender.org/developer/F86468/blender.crash.txt)

Campbell Barton commented

2014-06-03 12:19:04 +02:00

Moved details to report

*Moved details to report*

Campbell Barton changed title from ~~skin modifier crash when i use addone tree~~ to Skin modifier crashes with certain meshes

2014-06-04 02:54:46 +02:00

Campbell Barton removed their assignment 2014-06-04 02:54:46 +02:00

Nicholas Bishop was assigned by Campbell Barton

2014-06-04 02:54:46 +02:00

blender-admin commented

2015-05-13 08:08:19 +02:00

This issue was referenced by 7969b238db

This issue was referenced by 7969b238dbfd697a2590d654090080c862346d76

Campbell Barton commented

2015-05-13 08:09:23 +02:00

Changed status from 'Open' to: 'Resolved'

Campbell Barton closed this issue

2015-05-13 08:09:23 +02:00

Campbell Barton commented

2015-05-13 08:09:23 +02:00

Closed by commit 7969b238db.

Closed by commit 7969b238db.

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Skin modifier crashes with certain meshes #39775

Update

Original report