Segmentation fault crash with boolean difference modifier and three objects #43802
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Reference: blender/blender#43802
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bug3.16.blend has three mesh objects. Two (Cylinder and Cylinder.001) have two boolean difference modifiers each, and one of those two (Cylinder.001) also has an array modifier. When Boolean.002 on Cylinder is activated, Blender crashes every time for me. I have not tested this extensively, but it appears that any four of the modifiers can be activated at once without crashing and that the crash only occurs when all five are activated at once.
Machines I've reproduced this with:
Blender 2.73 on Arch Linux x64 with NVIDIA GTX 770
Blender 2.73 on Arch Linux x64 with Intel HD Graphics 3000
Blender 2.72 on Debian Jesse x64 with Intel HD Graphics 3000
bug3.16.blend.stderr
bug3.16.blend.stdout
bug3.16.crash.txt
Changed status to: 'Open'
Added subscribers: @catlover2, @gandalf3
Seems to be an issue with dissolving edges after boolean operation failure. Will look into it.
Added subscriber: @faerietree
Related, a crash in the following deprecated scene, when toggling from Edit mode to Object mode, seems to cause a crash with Boolean modifier (depending on selection or not).
boolean_crash_revision_0aa258117d52cf09530e1ff30837f697f3bb8307.tar.gz
Here the crash stacktrace that leads to the Boolean carving.
The error should be producable as follows:
Blender 2.73 (with pie menues enabled):
boolean_crash_revision_<revision>.blend
. Current mode is Edit mode.Blender (today's HEAD) revision
0aa258117d
/ without Pie menues:Stacktrace:
Unfortunately, the backtrace is not really helpful because it indicates where the issue was reveal, not when it actually happened. Actual issue happens somewhere prior to that point and it's causing corrupted geometry.
Spent quite some time now trying to nail the root of the issue down, but we've got experiment branchwhere we're using Blender's BMesh for boolean operations which seems rather promising from the performance point of view, and it'll also easier for us to follow/maintain. Would prefer concentrating finishing that project. Would take some time tho.
This is also not really a new issue, it existed to some extent in all previous versions -- it didn't crash, but failed to apply modifier all together.
Added subscriber: @Blendify
Changed status from 'Confirmed' to: 'Resolved'
This does not crash for me anymore.