Regression: Crash when trying to read particle hair_key.co. #103307

New Issue

Jose Conseco · 2022-12-18T00:37:33+01:00

Jose Conseco commented

2022-12-18 00:37:33 +01:00

System Information
Operating system: Linux-6.0.11-1-MANJARO-x86_64-with-glibc2.36 64 Bits
Graphics card: NVIDIA GeForce RTX 3060/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 525.60.11

Blender Version
Broken: version: 3.4.0, branch: blender-v3.4-release, commit date: 2022-12-06 18:46, hash: a95bf1ac01
Worked: Blender 3.3

Short description of error
Simple script for reading particle system hair strands positions will crash blender from ver. 3.4 :

import bpy
C = bpy.context

depsgraph = C.evaluated_depsgraph_get()
obj_eval = C.active_object.evaluated_get(depsgraph)
partsysMod = obj_eval.particle_systems.active  

for strand in partsysMod.particles:  # for strand point
    pts = [hair_key.co.copy() for hair_key in strand.hair_keys]  # crash when reading  hair.co.copy()    (or we try to access hair_key.co somehow later )

Exact steps for others to reproduce the error
Open attached blend file, run script (same as above), blender will crash with crash log and blend file (3.4) below:
hair_key_crash_34.crash.txt
hair_key_crash_34.blend

**System Information** Operating system: Linux-6.0.11-1-MANJARO-x86_64-with-glibc2.36 64 Bits Graphics card: NVIDIA GeForce RTX 3060/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 525.60.11 **Blender Version** Broken: version: 3.4.0, branch: blender-v3.4-release, commit date: 2022-12-06 18:46, hash: `a95bf1ac01` Worked: Blender 3.3 **Short description of error** Simple script for reading particle system hair strands positions will crash blender from ver. 3.4 : ``` import bpy C = bpy.context depsgraph = C.evaluated_depsgraph_get() obj_eval = C.active_object.evaluated_get(depsgraph) partsysMod = obj_eval.particle_systems.active for strand in partsysMod.particles: # for strand point pts = [hair_key.co.copy() for hair_key in strand.hair_keys] # crash when reading hair.co.copy() (or we try to access hair_key.co somehow later ) ``` **Exact steps for others to reproduce the error** Open attached blend file, run script (same as above), blender will crash with crash log and blend file (3.4) below: [hair_key_crash_34.crash.txt](https://archive.blender.org/developer/F14067638/hair_key_crash_34.crash.txt) [hair_key_crash_34.blend](https://archive.blender.org/developer/F14067637/hair_key_crash_34.blend)

Jose Conseco commented

2022-12-18 00:37:33 +01:00

Added subscriber: @JoseConseco

Pratik Borhade commented

2022-12-19 06:34:04 +01:00

Changed status from 'Needs Triage' to: 'Confirmed'

Pratik Borhade commented

2022-12-19 06:34:06 +01:00

Added subscriber: @PratikPB2123

Pratik Borhade commented

2022-12-19 07:06:15 +01:00

Added subscriber: @HooglyBoogly

Pratik Borhade commented

2022-12-19 07:06:15 +01:00

git bisect points to: 05952aa94d
@HooglyBoogly ^

git bisect points to: 05952aa94d @HooglyBoogly ^

Pratik Borhade changed title from ~~Crash when trying to read particle hair_key.co.~~ to Regression: Crash when trying to read particle hair_key.co.

2022-12-19 07:06:25 +01:00

Hans Goudey self-assigned this 2022-12-19 14:37:27 +01:00

blender-admin commented

2022-12-19 20:05:05 +01:00

This issue was referenced by 9f575ece39

This issue was referenced by 9f575ece39e8abacb31ee830abcfc7d5830b94b1

Hans Goudey commented

2022-12-19 20:08:25 +01:00

Changed status from 'Confirmed' to: 'Resolved'

Hans Goudey closed this issue

2022-12-19 20:08:25 +01:00

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Regression: Crash when trying to read particle hair_key.co. #103307