Crash on choosing Lattice in panel property #80258

New Issue

Ilja Razinkov · 2020-08-30T18:50:15+02:00

Ilja Razinkov commented

2020-08-30 18:50:15 +02:00

System Information
Operating system: Windows 10

Blender Version
Broken: 2.90.0 beta, hash 21cb6f09ff
Worked: 2.79

Blender crashing when selecting lattice in property panel, see screenshot

Steps to reproduce:

Open attached blend
Run script once (it will add panel)
Try to chooce Lattice from dropdown

Blend file: latticeCrash.blend

**System Information** Operating system: Windows 10 **Blender Version** Broken: 2.90.0 beta, hash 21cb6f09ffa8 Worked: 2.79 Blender crashing when selecting lattice in property panel, see screenshot ![2020-08-30_19-45-11.png](https://archive.blender.org/developer/F8822376/2020-08-30_19-45-11.png) Steps to reproduce: - Open attached blend - Run script once (it will add panel) - Try to chooce Lattice from dropdown Blend file: [latticeCrash.blend](https://archive.blender.org/developer/F8822380/latticeCrash.blend)

Ilja Razinkov commented

2020-08-30 18:50:15 +02:00

Added subscriber: @IPv6

Philipp Oeser commented

2020-08-31 11:07:01 +02:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2020-08-31 11:07:01 +02:00

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

Philipp Oeser commented

2020-08-31 11:07:02 +02:00

Can confirm.

For me, it does not always crash in release builds, sometimes you have to pick a different object from the list multiple times.
I could not even get it to crash in 2.91, 2.90 crashes pretty consistently though.
In Debug builds, it assserts (also 2.91) :

BLI_assert failed: /blender/source/blender/editors/interface/interface_utils.c:497, ui_rna_collection_search_update_fn(), at 'strlen(name_buf) <= MEM_allocN_len(cis->name)'

I wasnt sure you could search in context.scene, "objects" and assign this to a StringProperty, but apparently this is used in other Addons as well.
[My understanding was that you'd have to assign this to a PointerProperty -- if I change the script to do so, I dont get crashes/asserts].

In any case, this should not assert/crash, needs a bit more investigation...

1  raise                                                              0x7ffff780a9e5 
2  abort                                                              0x7ffff77f3895 
3  _BLI_assert_abort                  BLI_assert.c              50    0xb67fe69      
4  ui_rna_collection_search_update_fn interface_utils.c         497   0x425edf7      
5  ui_searchbox_update_fn             interface_region_search.c 458   0x4240e1a      
6  ui_searchbox_update                interface_region_search.c 512   0x424106c      
7  ui_textedit_begin                  interface_handlers.c      3360  0x41fdce8      
8  button_activate_state              interface_handlers.c      7879  0x420b44f      
9  ui_do_but_TEX                      interface_handlers.c      4438  0x42006e5      
10 ui_do_but_SEARCH_UNLINK            interface_handlers.c      4466  0x42007fb      
11 ui_do_button                       interface_handlers.c      7594  0x420a98b      
12 ui_handle_button_event             interface_handlers.c      8733  0x420d3e4      
13 ui_region_handler                  interface_handlers.c      10613 0x4211c8d      
14 wm_handler_ui_call                 wm_event_system.c         638   0x36240c9      
15 wm_handlers_do_intern              wm_event_system.c         2754  0x3629510      
16 wm_handlers_do                     wm_event_system.c         2865  0x3629908      
17 wm_event_do_handlers               wm_event_system.c         3363  0x362aee0      
18 WM_main                            wm.c                      482   0x361f503      
19 main                               creator.c                 546   0x31e36aa

Can confirm. For me, it does not always crash in release builds, sometimes you have to pick a different object from the list multiple times. I could not even get it to crash in 2.91, 2.90 crashes pretty consistently though. In Debug builds, it assserts (also 2.91) : ``` BLI_assert failed: /blender/source/blender/editors/interface/interface_utils.c:497, ui_rna_collection_search_update_fn(), at 'strlen(name_buf) <= MEM_allocN_len(cis->name)' ``` I wasnt sure you could search in context.scene, "objects" and assign this to a `StringProperty`, but apparently this is used in other Addons as well. [My understanding was that you'd have to assign this to a `PointerProperty` -- if I change the script to do so, I dont get crashes/asserts]. In any case, this should not assert/crash, needs a bit more investigation... ``` 1 raise 0x7ffff780a9e5 2 abort 0x7ffff77f3895 3 _BLI_assert_abort BLI_assert.c 50 0xb67fe69 4 ui_rna_collection_search_update_fn interface_utils.c 497 0x425edf7 5 ui_searchbox_update_fn interface_region_search.c 458 0x4240e1a 6 ui_searchbox_update interface_region_search.c 512 0x424106c 7 ui_textedit_begin interface_handlers.c 3360 0x41fdce8 8 button_activate_state interface_handlers.c 7879 0x420b44f 9 ui_do_but_TEX interface_handlers.c 4438 0x42006e5 10 ui_do_but_SEARCH_UNLINK interface_handlers.c 4466 0x42007fb 11 ui_do_button interface_handlers.c 7594 0x420a98b 12 ui_handle_button_event interface_handlers.c 8733 0x420d3e4 13 ui_region_handler interface_handlers.c 10613 0x4211c8d 14 wm_handler_ui_call wm_event_system.c 638 0x36240c9 15 wm_handlers_do_intern wm_event_system.c 2754 0x3629510 16 wm_handlers_do wm_event_system.c 2865 0x3629908 17 wm_event_do_handlers wm_event_system.c 3363 0x362aee0 18 WM_main wm.c 482 0x361f503 19 main creator.c 546 0x31e36aa ```

Philipp Oeser self-assigned this 2020-08-31 12:20:54 +02:00

blender-admin commented

2020-08-31 12:37:50 +02:00

This issue was referenced by 26d5c24f0a

This issue was referenced by 26d5c24f0aad85d137f7e465858877d80c0d6a36

blender-admin commented

2020-08-31 12:37:50 +02:00

This issue was referenced by cb0b0416f4

This issue was referenced by cb0b0416f454419cd1902434f7dffa2682417a56

Philipp Oeser commented

2020-08-31 12:45:12 +02:00

Added subscribers: @JulianEisel, @ideasman42

Philipp Oeser commented

2020-08-31 12:45:12 +02:00

@JulianEisel, @ideasman42 : if the names dont match for prop_search, this might actually be critical? [this is in 2.90...]
Checking which Addons might be affected here next...

@JulianEisel, @ideasman42 : if the names dont match for `prop_search`, this might actually be critical? [this is in 2.90...] Checking which Addons might be affected here next...

Philipp Oeser commented

2020-08-31 13:18:57 +02:00

Changed status from 'Confirmed' to: 'Resolved'

Philipp Oeser closed this issue

2020-08-31 13:18:57 +02:00

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Crash on choosing Lattice in panel property #80258