Crash on import Collada file #50996
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Reference: blender/blender#50996
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System Information
Linux Mint 18, Intel(R) HD Graphics 5500 (Broadwell GT2)
Blender Version
Broken: 2.78c
Short description of error
Blander crashes on import of specific Collada file
Exact steps for others to reproduce the error
skin+morph.dae
Changed status to: 'Open'
Added subscriber: @root.ext
Hi;
I can confirm that blender crashes. The reason for the crash is that the Collada importer does a program abort because of a wrong data structure:
As far as i understand the collada syntax says that mesh geometries are embedded in elements. According to collada 1.4.1 mesh geometries are stored in this scheme:
The breaking file does not contain the element:
The collada importer does not find the data and complains about missing information. Unfortunately it believes this is a major failure and aborts the program. The external opencollada function involved here is:
The problem is that COLLADABU_ASSERT does the program abort. So the next line where the error is handled more gracefully is never called in this case. A further investigation shows that actually the assert function should only do something when opencollada is built with debugmode. exist in the debug libraries. So the true question is why is it used in the release.
A more detailed inspection shows that OpenCollada behaves differently in Debug builds and in Release builds:
I have found a possible fix for this, but this must be done in the OpenCollada library itself. I have created a pull request, see https://github.com/KhronosGroup/OpenCOLLADA/pull/506
Changed status from 'Open' to: 'Resolved'
This has been fixed with commit
89060babbc
Please can you check if it works for you now?
thanks,
Gaia
Fixed. Thank you.