Python: calling id_properties_ui(key).update() without arguments, crashes blender #92532

New Issue

Ovionis · 2021-10-27T13:39:28+02:00

Ovionis commented

2021-10-27 13:39:28 +02:00

System Information
Operating system: Windows-10-10.0.19042-SP0 64 Bits
Graphics card: NVIDIA GeForce GTX 1650 SUPER/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 496.13

Blender Version
Broken: version: 3.0.0 Alpha, branch: master, commit date: 2021-10-26 23:24, hash: 8d8ce64435

Short description of error
Apparently the old method of editing custom property defaults, via a custom property named _RNA_UI, is no longer valid, and now it's done via a function of a function.
When calling this second function (update), without specifying any arguments, blender will just crash.

Exact steps for others to reproduce the error
The following script will run except the last line:

import bpy

ob = bpy.context.object
ob['custom_prop'] = 1

rna = ob.id_properties_ui('custom_prop')
rna.update(description="This will work")

rna.update()  # This will not work

The second part of this sub-function (I believe is used to copy the ui to other things), will also crash albeit if you send it to itself, I guess. Example:

import bpy

ob = bpy.context.object
ob['custom_prop'] = None

rna = ob.id_properties_ui('custom_prop')
rna.update_from(rna)

I'm not sure if this is also bug, or just bad user input-loop, like while True: continue

**System Information** Operating system: Windows-10-10.0.19042-SP0 64 Bits Graphics card: NVIDIA GeForce GTX 1650 SUPER/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 496.13 **Blender Version** Broken: version: 3.0.0 Alpha, branch: master, commit date: 2021-10-26 23:24, hash: `8d8ce64435` **Short description of error** Apparently the old method of editing custom property defaults, via a custom property named `_RNA_UI`, is no longer valid, and now it's done via a function of a function. When calling this second function (update), without specifying any arguments, blender will just crash. **Exact steps for others to reproduce the error** The following script will run except the last line: ``` import bpy ob = bpy.context.object ob['custom_prop'] = 1 rna = ob.id_properties_ui('custom_prop') rna.update(description="This will work") rna.update() # This will not work ``` The second part of this sub-function (I believe is used to copy the ui to other things), will also crash albeit if you send it to itself, I guess. Example: ``` import bpy ob = bpy.context.object ob['custom_prop'] = None rna = ob.id_properties_ui('custom_prop') rna.update_from(rna) ``` I'm not sure if this is also bug, or just bad user input-loop, like `while True: continue`

Ovionis commented

2021-10-27 13:39:28 +02:00

Added subscriber: @Phigon

Germano Cavalcante commented

2021-10-28 16:42:20 +02:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2021-10-28 16:42:20 +02:00

Changed status from 'Needs Triage' to: 'Needs User Info'

Germano Cavalcante commented

2021-10-28 16:42:20 +02:00

I cannot reproduce this with the current development versions of Blender.

But I had to edit the script to resolve this error:

SyntaxError: unexpected EOF while parsing
Traceback (most recent call last):
  File "/Text", line 6, in <module>
TypeError: ui_data() takes exactly 1 argument (0 given)
Error: Python script failed, check the message in the system console

Please try the latest daily build: https://builder.blender.org/download/

If the problem persists, please give us more clear instructions on how to reproduce it from scratch.

I cannot reproduce this with the current development versions of Blender. But I had to edit the script to resolve this error: ``` SyntaxError: unexpected EOF while parsing Traceback (most recent call last): File "/Text", line 6, in <module> TypeError: ui_data() takes exactly 1 argument (0 given) Error: Python script failed, check the message in the system console ``` Please try the latest daily build: https://builder.blender.org/download/ If the problem persists, please give us more clear instructions on how to reproduce it from scratch.

Ovionis commented

2021-10-28 17:03:27 +02:00

None works, and I forget to add the attribute into the code.
The second part already worked.

Both codes now successfully crash.

I don't know if it's only None that doesn't crash or it's only int that does crash, just that it crashes.

`None` works, and I forget to add the attribute into the code. The second part already worked. Both codes now successfully crash. I don't know if it's only `None` that doesn't crash or it's only `int` that does crash, just that it crashes.

Germano Cavalcante commented

2021-10-28 20:56:47 +02:00

Added subscriber: @HooglyBoogly

Germano Cavalcante commented

2021-10-28 20:56:47 +02:00

Thanks for the report, I can confirm.
8b9a3b94 introduced many changes in this area. There is a chance that it introduced the bug.
@HooglyBoogly, mind checking?

Thanks for the report, I can confirm. 8b9a3b94 introduced many changes in this area. There is a chance that it introduced the bug. @HooglyBoogly, mind checking?

Hans Goudey commented

2021-10-28 21:14:53 +02:00

Removed subscriber: @HooglyBoogly