Crash while entering edit mode if the object has subsurf and is child of another object with a bool modifier #46720

New Issue

Alessandro Sala · 2015-11-07T17:31:58+01:00

Alessandro Sala commented

2015-11-07 17:31:58 +01:00

System Information
Windows 7 Pro SP1, NVIDIA GeForce GT 750M

Blender Version
Broken: 2.76b f337fea
Worked: Don't know

Short description of error
Blender crashes when entering edit mode if the object being edited, let's call it A, has a subsurf modifier and it is child of another mesh which has a bool modifier whose "Object" is A (a bit confusing, I know, see attached .blend)
Besides, on startup the bool modifier dosen't work: you have to make some editing action (e.g. disable/enable some modifier, enter/exit edit mode and so on) to "activate" it

Exact steps for others to reproduce the error
Open the attached .blend file, and you can see the bool modifier does not work. Press TAB and Blender crashes.
If you disable the subsurf modifier, the crash doesn't happen.

Crash editing child with subsurf and bool modifier on parent.blend

**System Information** Windows 7 Pro SP1, NVIDIA GeForce GT 750M **Blender Version** Broken: 2.76b f337fea Worked: Don't know **Short description of error** Blender crashes when entering edit mode if the object being edited, let's call it **A**, has a subsurf modifier and it is child of another mesh which has a bool modifier whose "Object" is **A** (a bit confusing, I know, see attached .blend) Besides, on startup the bool modifier dosen't work: you have to make some editing action (e.g. disable/enable some modifier, enter/exit edit mode and so on) to "activate" it **Exact steps for others to reproduce the error** Open the attached .blend file, and you can see the bool modifier does not work. Press TAB and Blender crashes. If you disable the subsurf modifier, the crash doesn't happen. [Crash editing child with subsurf and bool modifier on parent.blend](https://archive.blender.org/developer/F253653/Crash_editing_child_with_subsurf_and_bool_modifier_on_parent.blend)

Alessandro Sala commented

2015-11-07 17:31:58 +01:00

Changed status to: 'Open'

Alessandro Sala commented

2015-11-07 17:31:58 +01:00

Added subscriber: @xela-1

Aaron Carlisle commented

2015-11-07 19:28:09 +01:00

Added subscriber: @Blendify

Aaron Carlisle commented

2015-11-07 19:28:09 +01:00

I can confirm here

Sergey Sharybin commented

2015-11-08 03:55:47 +01:00

Added subscriber: @Sergey

Sergey Sharybin commented

2015-11-08 03:55:47 +01:00

Please do a test with latest builds from https://builder.blender.org/download/

With those ones i can't reproduce the reported crash so it might have been fixed already in git.

Please do a test with latest builds from https://builder.blender.org/download/ With those ones i can't reproduce the reported crash so it might have been fixed already in git.

Aaron Carlisle commented

2015-11-08 04:01:53 +01:00

Yep works fine here

Sergey Sharybin commented

2015-11-08 04:06:48 +01:00

Changed status from 'Open' to: 'Resolved'

Sergey Sharybin closed this issue

2015-11-08 04:06:48 +01:00

Sergey Sharybin self-assigned this 2015-11-08 04:06:48 +01:00

Sergey Sharybin commented

2015-11-08 04:06:48 +01:00

Ok,considering the issue to be resolved then :)

Aaron Carlisle commented

2015-11-08 04:10:20 +01:00

However, I still get crashes after a applying modifier and undoing and applying again with the sub surf may have to repeat a couple of times

Sergey Sharybin commented

2015-11-08 04:21:48 +01:00

What are the exact steps of reproducing that crash?

Alessandro Sala commented

2015-11-08 16:35:13 +01:00

Yes, I confirm that with build 2.75 5f95a4f it works.

However, upon startup, the bool modifier still does not work until you do some editing action.
And, as Aaron said, you can still crash Blender by following this simple procedure:

Open the attached .blend file
Press TAB twice (enter and immediately exit edit mode)
Apply the subsurf modifier
If Blender has not already crashed (sometimes it happens at this point), press CTRL-Z (undo)

Apply the subsurf again: blender crashes immediately

Yes, I confirm that with build 2.75 5f95a4f it works. However, upon startup, the bool modifier still does not work until you do some editing action. And, as Aaron said, you can still crash Blender by following this simple procedure: - Open the attached .blend file - Press TAB twice (enter and immediately exit edit mode) - Apply the subsurf modifier - If Blender has not already crashed (sometimes it happens at this point), press CTRL-Z (undo) # Apply the subsurf again: blender crashes immediately

Aaron Carlisle commented

2015-11-08 17:39:49 +01:00

Changed status from 'Resolved' to: 'Open'

Aaron Carlisle reopened this issue

2015-11-08 17:39:49 +01:00

Aaron Carlisle commented

2015-11-08 17:39:49 +01:00

I am reopening since it appears that their is something going on here still

Alessandro Sala commented

2015-11-08 17:49:23 +01:00

Sorry, I meant 2.76 5f95a4f !

Sorry, I meant 2.7**6** 5f95a4f !

Alessandro Sala commented

2015-11-08 17:57:51 +01:00

In #46720#345753, @Blendify wrote:
However, I still get crashes after a applying modifier and undoing and applying again with the sub surf may have to repeat a couple of times

Upon further testing, I can confirm Aaron's comment: sometimes you have to repeat steps 4 and 5 several times in a row to crash Blender.

> In #46720#345753, @Blendify wrote: > However, I still get crashes after a applying modifier and undoing and applying again with the sub surf may have to repeat a couple of times Upon further testing, I can confirm Aaron's comment: sometimes you have to repeat steps 4 and 5 several times in a row to crash Blender.

blender-admin commented

2015-11-10 16:05:13 +01:00

This issue was referenced by 3b38fd6bf9

This issue was referenced by 3b38fd6bf92cd9abc502346198e54191a247e860

Campbell Barton commented

2015-11-10 16:12:48 +01:00

Changed status from 'Open' to: 'Resolved'

Campbell Barton closed this issue

2015-11-10 16:12:48 +01:00

Alessandro Sala commented

2015-11-10 20:30:27 +01:00

I can confirm that with 2.76 5693337 the crash is gone.
But the boolean modifier still does not display on startup, and also after entering and exiting edit mode on the child sphere.

I can confirm that with 2.76 5693337 the crash is gone. But the boolean modifier still does not display on startup, and also after entering and exiting edit mode on the child sphere.

Alessandro Sala commented

2015-11-12 13:43:03 +01:00

Do I have to open a new bug report?

Aaron Carlisle commented

2015-11-12 14:05:37 +01:00

@xela-1 go ahead since it is a different issue

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Crash while entering edit mode if the object has subsurf and is child of another object with a bool modifier #46720

Apply the subsurf again: blender crashes immediately