OBJ importer crashes #88312
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Reference: blender/blender#88312
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System Information
Hardware: MacMini Model 8,1 8GB RAM, 6-Core Intel Core i5
Operating system: MacOS 11.3 (20E232)
Graphics card: Intel UHD Graphics 630
Blender Version
Broken: 2.92.0,
02948a2cab
Worked: unknown, 2.79 same error.
Short description of error
OBJ import crashes with Python traceback:
Exact steps for others to reproduce the error
Import OBJ file (approx 0.5 GB) provided at https://drive.google.com/file/d/1beGmCszn3YMZ7ZCYcm9Zvz_1ODT8bD2H/view?usp=sharing
Added subscriber: @WolfgangGeithner
Note: The OBJ file above was created from a STP CAD-file using Glovius. Glovius exports as well to 3DS, which I was able to import into Blender 2.79b. As the 3DS importer to Blender is broken since version 2.8 it would be very desirable to get the OBJ importer ready to handle my file.
Added subscriber: @rjg
Changed status from 'Needs Triage' to: 'Archived'
I've taken a quick look at your file and it seems to violate the obj specification . After the definition of vertex normals
vn
there is a section for the facesf
that references (at this point) non existentvn
indices. This is the reason for the" index out of range" error you've experienced. Take for instance the first section ofvn
andf
declarations in your file:The syntax for the faces is
f v/vt/vn
orf v//vn
if the texture coordinate is left out. There are eight vertex normals, but the faces reference indices up to twelve.This does not appear to be a bug in Blender, but an invalid .obj file. For future bug report please prepare a minimal example file that demonstrates the issue and upload it directly on the bug tracker.