Intersect Knife: Segmentation fault or incorrect behavior #63787

New Issue

kloliks · 2019-04-21T23:27:54+02:00

kloliks commented

2019-04-21 23:27:54 +02:00

System Information
Operating system: win10
Graphics card: gtx1060

Blender Version
Broken: 2.79, master; 2.80, master

Short description of error
Segmentation fault or incorrect behavior

Exact steps for others to reproduce the error

New plane
One vertical loop cut
Individual insert faces

Select one inner rectangle
Shift + D
Rotate 90 degrees
Horizontally scaled slightly

Two inner rectangle added to selection
Shift + H
Ctrl + F
Select: Intersect (Knife)

.blend file
untitled.blend

**System Information** Operating system: win10 Graphics card: gtx1060 **Blender Version** Broken: 2.79, master; 2.80, master **Short description of error** Segmentation fault or incorrect behavior **Exact steps for others to reproduce the error** ``` New plane One vertical loop cut Individual insert faces ``` ![0001.jpg](https://archive.blender.org/developer/F6965100/0001.jpg) ``` Select one inner rectangle Shift + D Rotate 90 degrees Horizontally scaled slightly ``` ![0002.jpg](https://archive.blender.org/developer/F6965103/0002.jpg) ``` Two inner rectangle added to selection Shift + H Ctrl + F Select: Intersect (Knife) ``` ![0003.jpg](https://archive.blender.org/developer/F6965102/0003.jpg) **.blend file** [untitled.blend](https://archive.blender.org/developer/F6965104/untitled.blend)

kloliks commented

2019-04-21 23:27:54 +02:00

Added subscriber: @kloliks

blender-admin commented

2019-04-21 23:27:54 +02:00

#74441 was marked as duplicate of this issue

Sebastian Parborg commented

2019-04-25 14:29:13 +02:00

Added subscriber: @ZedDB

Campbell Barton was assigned by Sebastian Parborg

2019-04-25 14:29:13 +02:00

Sebastian Parborg commented

2019-04-25 14:29:13 +02:00

BLI_assert failed: /home/zed/prog/blender/source/blender/bmesh/tools/bmesh_intersect.c:1265, BM_mesh_intersect(), at '(_splice_ls_index) + (1) <= _splice_ls_totalloc'

Thread 1 "blender" received signal SIGABRT, Aborted.
0x00007ffff3a6a61b in raise () from /lib64/libc.so.6
(gdb) bt
- 0  0x00007ffff3a6a61b in raise () from /lib64/libc.so.6
- 1  0x00007ffff3a53535 in abort () from /lib64/libc.so.6
#2  0x0000555558ea7ee8 in BM_mesh_intersect (bm=0x7fffe8bed008, looptris=0x7fffd5f67808, looptris_tot=22, test_fn=0x5555589c0461 <bm_face_isect_pair>, user_data=0x0,
    use_self=false, use_separate=false, use_dissolve=true, use_island_connect=true, use_partial_connect=true, use_edge_tag=true, boolean_mode=-1, eps=9.99999997e-07)
    at /home/zed/prog/blender/source/blender/bmesh/tools/bmesh_intersect.c:1265
- 3  0x00005555589c143e in edbm_intersect_exec (C=0x7fffeec58188, op=0x7fffde406788) at /home/zed/prog/blender/source/blender/editors/mesh/editmesh_intersect.c:193
- 4  0x000055555821abdd in wm_operator_invoke (C=0x7fffeec58188, ot=0x7fffe99732c8, event=0x7fffe896cc88, properties=0x7fffffffd960, reports=0x0, poll_only=false,
    use_last_properties=true) at /home/zed/prog/blender/source/blender/windowmanager/intern/wm_event_system.c:1421
#5  0x000055555821b29c in wm_operator_call_internal (C=0x7fffeec58188, ot=0x7fffe99732c8, properties=0x7fffffffd960, reports=0x0, context=1, poll_only=false,
    event=0x7fffe896cc88) at /home/zed/prog/blender/source/blender/windowmanager/intern/wm_event_system.c:1623
#6  0x000055555821b4bf in WM_operator_name_call_ptr (C=0x7fffeec58188, ot=0x7fffe99732c8, context=1, properties=0x7fffffffd960)
    at /home/zed/prog/blender/source/blender/windowmanager/intern/wm_event_system.c:1671
- 7  0x000055555881989e in ui_apply_but_funcs_after (C=0x7fffeec58188) at /home/zed/prog/blender/source/blender/editors/interface/interface_handlers.c:789
- 8  0x0000555558831f05 in ui_popup_handler (C=0x7fffeec58188, event=0x7fffd58fcc08, userdata=0x7fffd5979588)
    at /home/zed/prog/blender/source/blender/editors/interface/interface_handlers.c:10198
#9  0x0000555558218865 in wm_handler_ui_call (C=0x7fffeec58188, handler=0x7fffd59f7448, event=0x7fffd58fcc08, always_pass=0)
    at /home/zed/prog/blender/source/blender/windowmanager/intern/wm_event_system.c:608
#10 0x000055555821d8a7 in wm_handlers_do_intern (C=0x7fffeec58188, event=0x7fffd58fcc08, handlers=0x7fffd1d32298)
    at /home/zed/prog/blender/source/blender/windowmanager/intern/wm_event_system.c:2573
#11 0x000055555821e282 in wm_handlers_do (C=0x7fffeec58188, event=0x7fffd58fcc08, handlers=0x7fffd1d32298)
    at /home/zed/prog/blender/source/blender/windowmanager/intern/wm_event_system.c:2804
- 12 0x000055555821f4f6 in wm_event_do_handlers (C=0x7fffeec58188) at /home/zed/prog/blender/source/blender/windowmanager/intern/wm_event_system.c:3172
- 13 0x00005555582130f0 in WM_main (C=0x7fffeec58188) at /home/zed/prog/blender/source/blender/windowmanager/intern/wm.c:418
#14 0x0000555557b802c4 in main (argc=1, argv=0x7fffffffe098) at /home/zed/prog/blender/source/creator/creator.c:500

``` BLI_assert failed: /home/zed/prog/blender/source/blender/bmesh/tools/bmesh_intersect.c:1265, BM_mesh_intersect(), at '(_splice_ls_index) + (1) <= _splice_ls_totalloc' Thread 1 "blender" received signal SIGABRT, Aborted. 0x00007ffff3a6a61b in raise () from /lib64/libc.so.6 (gdb) bt - 0 0x00007ffff3a6a61b in raise () from /lib64/libc.so.6 - 1 0x00007ffff3a53535 in abort () from /lib64/libc.so.6 #2 0x0000555558ea7ee8 in BM_mesh_intersect (bm=0x7fffe8bed008, looptris=0x7fffd5f67808, looptris_tot=22, test_fn=0x5555589c0461 <bm_face_isect_pair>, user_data=0x0, use_self=false, use_separate=false, use_dissolve=true, use_island_connect=true, use_partial_connect=true, use_edge_tag=true, boolean_mode=-1, eps=9.99999997e-07) at /home/zed/prog/blender/source/blender/bmesh/tools/bmesh_intersect.c:1265 - 3 0x00005555589c143e in edbm_intersect_exec (C=0x7fffeec58188, op=0x7fffde406788) at /home/zed/prog/blender/source/blender/editors/mesh/editmesh_intersect.c:193 - 4 0x000055555821abdd in wm_operator_invoke (C=0x7fffeec58188, ot=0x7fffe99732c8, event=0x7fffe896cc88, properties=0x7fffffffd960, reports=0x0, poll_only=false, use_last_properties=true) at /home/zed/prog/blender/source/blender/windowmanager/intern/wm_event_system.c:1421 #5 0x000055555821b29c in wm_operator_call_internal (C=0x7fffeec58188, ot=0x7fffe99732c8, properties=0x7fffffffd960, reports=0x0, context=1, poll_only=false, event=0x7fffe896cc88) at /home/zed/prog/blender/source/blender/windowmanager/intern/wm_event_system.c:1623 #6 0x000055555821b4bf in WM_operator_name_call_ptr (C=0x7fffeec58188, ot=0x7fffe99732c8, context=1, properties=0x7fffffffd960) at /home/zed/prog/blender/source/blender/windowmanager/intern/wm_event_system.c:1671 - 7 0x000055555881989e in ui_apply_but_funcs_after (C=0x7fffeec58188) at /home/zed/prog/blender/source/blender/editors/interface/interface_handlers.c:789 - 8 0x0000555558831f05 in ui_popup_handler (C=0x7fffeec58188, event=0x7fffd58fcc08, userdata=0x7fffd5979588) at /home/zed/prog/blender/source/blender/editors/interface/interface_handlers.c:10198 #9 0x0000555558218865 in wm_handler_ui_call (C=0x7fffeec58188, handler=0x7fffd59f7448, event=0x7fffd58fcc08, always_pass=0) at /home/zed/prog/blender/source/blender/windowmanager/intern/wm_event_system.c:608 #10 0x000055555821d8a7 in wm_handlers_do_intern (C=0x7fffeec58188, event=0x7fffd58fcc08, handlers=0x7fffd1d32298) at /home/zed/prog/blender/source/blender/windowmanager/intern/wm_event_system.c:2573 #11 0x000055555821e282 in wm_handlers_do (C=0x7fffeec58188, event=0x7fffd58fcc08, handlers=0x7fffd1d32298) at /home/zed/prog/blender/source/blender/windowmanager/intern/wm_event_system.c:2804 - 12 0x000055555821f4f6 in wm_event_do_handlers (C=0x7fffeec58188) at /home/zed/prog/blender/source/blender/windowmanager/intern/wm_event_system.c:3172 - 13 0x00005555582130f0 in WM_main (C=0x7fffeec58188) at /home/zed/prog/blender/source/blender/windowmanager/intern/wm.c:418 #14 0x0000555557b802c4 in main (argc=1, argv=0x7fffffffe098) at /home/zed/prog/blender/source/creator/creator.c:500 ```

Philipp Oeser changed title from ~~Segmentation fault or incorrect behavior with `Intersect (Knife)`~~ to Intersect Knife: Segmentation fault or incorrect behavior

2019-09-03 11:52:25 +02:00

Campbell Barton was unassigned by Dalai Felinto

2019-12-23 16:34:37 +01:00

Dalai Felinto commented

2019-12-23 16:34:37 +01:00

Added subscriber: @ideasman42

Germano Cavalcante commented

2020-01-30 13:05:34 +01:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2020-01-30 13:05:34 +01:00

I can confirm the crash.
If not on the first try, on the second.

I can confirm the crash. If not on the first try, on the second.

Germano Cavalcante commented

2020-02-08 15:45:07 +01:00

I investigated the file and was able to identify more precisely the problem.
Basically the error occurs when a "non-existent" edge of a selected face intersects an unselected edge:

Here is the file:
intersect_knife_bug.blend

I investigated the file and was able to identify more precisely the problem. Basically the error occurs when a "non-existent" edge of a selected face intersects an unselected edge: ![image.png](https://archive.blender.org/developer/F8329423/image.png) Here is the file: [intersect_knife_bug.blend](https://archive.blender.org/developer/F8329427/intersect_knife_bug.blend)

Germano Cavalcante commented

2020-03-04 17:18:27 +01:00

Added subscriber: @Dragosh

Campbell Barton self-assigned this 2020-04-23 15:45:59 +02:00

blender-admin commented

2020-04-24 04:03:40 +02:00

This issue was referenced by d428cca124

This issue was referenced by d428cca124264cdb6e68d0676c74d80c7a303a7a

Campbell Barton commented

2020-04-24 04:22:11 +02:00

Changed status from 'Confirmed' to: 'Resolved'

Campbell Barton closed this issue

2020-04-24 04:22:11 +02:00

Thomas Dinges added this to the 2.83 LTS milestone 2023-02-08 16:39:39 +01:00

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Intersect Knife: Segmentation fault or incorrect behavior #63787