Blender quits on undo/redo after changing object color #40046

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Willi · 2014-05-06T13:42:21+02:00

Willi commented

2014-05-06 13:42:21 +02:00

System Information
Win7/64, AMD HD6850

Blender Version

blender-2.70-c6d8540-win64: works
blender-2.70-9de24c8-win64: broken
2.70a official: works
blender-2.70-6e9c2d0-win64: broken
...
blender-2.70-362b25b3-win64: broken

Short description of error
Blender quits on undo/redo after changing object color

Exact steps for others to reproduce the error

Open UndoRedo.blend
Change the object color (object properties, "Display" section)

Undo (Ctrl+Z). => Blender quits without a message. I've made several tests, and normally it quits immediatelly, but sometimes you have to press Undo,Redo,Undo,Redo,... several times to make it quit.

Please note which versions mentioned above crash/work: Broken with nightly, then works with official, then broken again.

Crash log: UndoRedo.crash.txt

**System Information** Win7/64, AMD HD6850 **Blender Version** blender-2.70-c6d8540-win64: works blender-2.70-9de24c8-win64: broken 2.70a official: works blender-2.70-6e9c2d0-win64: broken ... blender-2.70-362b25b3-win64: broken **Short description of error** Blender quits on undo/redo after changing object color **Exact steps for others to reproduce the error** - Open [UndoRedo.blend](https://archive.blender.org/developer/F87234/UndoRedo.blend) - Change the object color (object properties, "Display" section) # Undo (Ctrl+Z). => Blender quits without a message. I've made several tests, and normally it quits immediatelly, but sometimes you have to press Undo,Redo,Undo,Redo,... several times to make it quit. Please note which versions mentioned above crash/work: Broken with nightly, then works with official, then broken again. Crash log: [UndoRedo.crash.txt](https://archive.blender.org/developer/F87235/UndoRedo.crash.txt)

Willi commented

2014-05-06 13:42:21 +02:00

Changed status to: 'Open'

Willi commented

2014-05-06 13:42:21 +02:00

Added subscriber: @willi-2

Bastien Montagne commented

2014-05-06 14:33:58 +02:00

Added subscriber: @mont29

Bastien Montagne commented

2014-05-06 14:33:58 +02:00

Cannot confirm that on Linux64 with recent builds, neither release nor debug+asan, neither with your file nor with default cube…

Bastien Montagne commented

2014-05-06 14:34:37 +02:00

Assuming this is a windows issue for now? Can someone on this platform try to reproduce?

Bastien Montagne commented

2014-05-06 14:35:03 +02:00

Added subscribers: @MartijnBerger, @ThomasDinges

Willi commented

2014-05-06 16:01:06 +02:00

This is strange. Did some more tests:

In VM:

Kubuntu: no crash
Win7/64: no crash. Tried 362b25b3, 7660218 (x64), 7660218 (x86, VC12)

On physical machine:
7660218-win64: still crash
7660218-win32-vc12: works!

Narrowing down with 7660218-win64:

Removed all window layouts but "Default": still crash
Loaded factory settings: still crash
"Load UI" disabled: still crash

This is hard to catch because undo/redo has to be done several times until it crashes, so I never know when it's safe to say it "works". In addition, after restarting Blender, the same situation sometimes works and sometimes crashes.

Still investigating...

This is strange. Did some more tests: In VM: - Kubuntu: no crash - Win7/64: no crash. Tried 362b25b3, 7660218 (x64), 7660218 (x86, VC12) On physical machine: 7660218-win64: still crash 7660218-win32-vc12: works! Narrowing down with 7660218-win64: - Removed all window layouts but "Default": still crash - Loaded factory settings: still crash - "Load UI" disabled: still crash This is hard to catch because undo/redo has to be done several times until it crashes, so I never know when it's safe to say it "works". In addition, after restarting Blender, the same situation sometimes works and sometimes crashes. Still investigating...

Willi commented

2014-05-06 16:31:48 +02:00

The "safest" situation should be:

Start Blender
Restore factory settings

Load UndoRedo.blend without UI

If I do this, it still crashes.

Though, it always works with c6d8540, and also with latest 32 bit build. "Always" means: Starting Blender four times, and each time doing undo/redo about 50 times.
:-/

Using Windbg, I can see that Undo causes an access violation. But without debug symbols, there's unfortunatelly nothing helpful I can provide now - can I?

....However: The 32 bit version that always works if started from Windows Explorer (double-click) also sometimes crashes if started via command line (current dir=blender dir).

Oh, sometimes the console says "error: not freed memory blocks: 180" (or other number) when quitting even though I performed the same steps as the previous time where it did not report any not freed memory blocks.

Sorry, this is too random to give more reliable information.

The "safest" situation should be: - Start Blender - Restore factory settings # Load UndoRedo.blend without UI If I do this, it still crashes. Though, it always works with c6d8540, and also with latest 32 bit build. "Always" means: Starting Blender four times, and each time doing undo/redo about 50 times. :-/ Using Windbg, I can see that Undo causes an access violation. But without debug symbols, there's unfortunatelly nothing helpful I can provide now - can I? ....However: The 32 bit version that always works if started from Windows Explorer (double-click) also sometimes crashes if started via command line (current dir=blender dir). Oh, sometimes the console says "error: not freed memory blocks: 180" (or other number) when quitting even though I performed the same steps as the previous time where it did not report any not freed memory blocks. Sorry, this is too random to give more reliable information.

Campbell Barton self-assigned this 2014-05-07 11:10:03 +02:00

Campbell Barton commented

2014-05-08 07:10:32 +02:00

I have a fix for this prepared. will commit soon (or send for review)

Campbell Barton commented

2014-05-08 11:44:10 +02:00

Will commit workaround, but moving to TODO since a real fix is very involved.

http://wiki.blender.org/index.php/Dev:2.5/Source/Development/Todo/UserInterface#Properties_Editor

Will commit workaround, but moving to TODO since a real fix is very involved. http://wiki.blender.org/index.php/Dev:2.5/Source/Development/Todo/UserInterface#Properties_Editor

Willi commented

2014-05-08 12:00:37 +02:00

Oh, ok. Thanks a lot for looking into it anyway.

Campbell Barton commented

2014-05-08 21:23:52 +02:00

@willi-2, to be clear, the crash is fixed, just not in such a nice way.

Campbell Barton commented

2014-05-08 21:30:59 +02:00

Changed status from 'Open' to: 'Archived'

Campbell Barton closed this issue

2014-05-08 21:30:59 +02:00

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Blender quits on undo/redo after changing object color #40046

Undo (Ctrl+Z). => Blender quits without a message. I've made several tests, and normally it quits immediatelly, but sometimes you have to press Undo,Redo,Undo,Redo,... several times to make it quit.

Load UndoRedo.blend without UI