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Blender crashes while in Point normals to target mode on Ctrl+Z or Tab press
Open, Confirmed, MediumPublic


System Information
Operating system: Windows-10-10.0.17134 64 Bits
Graphics card: GeForce GTX 1060 6GB/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 388.13

Blender Version
Broken: version: 2.80 (sub 55), branch: blender2.7, commit date: 2019-04-09 18:12, hash: rB009dbc2bc9fb
Worked: (optional)
Reproduces for older versions of 2.8

Short description of error
Blender crashes while in Point normals to target mode on Ctrl+Z or Tab press

Exact steps for others to reproduce the error

  1. Enable Auto Smooth for a mesh object (Properties/Normals tab)
  2. Go to Edit Mode for this object
  3. Select Mesh/Normals/Point normals to target (or Alt+L)
  4. Press Ctrl+Z on keyboard (or Tab)


  • Does not reproduce if Point normals to target was confirmed or canceled (Enter/PadEnter/LMB or Esc/RMB)
  • Reproduces if any action (or combination of actions) was selected between steps 3 and 4 (point to mouse/pivot/object origin, reset normals, etc.)



Event Timeline

Kate White (eelh) updated the task description. (Show Details)
Sebastian Parborg (zeddb) triaged this task as Confirmed, Medium priority.


Thread 1 "blender" received signal SIGSEGV, Segmentation fault.
0x0000555558dc114c in BKE_editmesh_from_object (ob=0x0) at /home/zed/prog/blender/source/blender/blenkernel/intern/editmesh.c:83
83		BLI_assert(ob->type == OB_MESH);
(gdb) bt
#0  0x0000555558dc114c in BKE_editmesh_from_object (ob=0x0) at /home/zed/prog/blender/source/blender/blenkernel/intern/editmesh.c:83
#1  0x0000555558350f7f in edbm_point_normals_modal (C=0x7fffe3858188, op=0x7fffc5884c48, event=0x7fffc5919008)
    at /home/zed/prog/blender/source/blender/editors/mesh/editmesh_tools.c:7301
#2  0x0000555557e5d59b in wm_handler_operator_call (C=0x7fffe3858188, handlers=0x7fffde71c598, handler_base=0x7fffca48d888, event=0x7fffc5919008,
    properties=0x0) at /home/zed/prog/blender/source/blender/windowmanager/intern/wm_event_system.c:2057
#3  0x0000555557e5f15e in wm_handlers_do_intern (C=0x7fffe3858188, event=0x7fffc5919008, handlers=0x7fffde71c598)
    at /home/zed/prog/blender/source/blender/windowmanager/intern/wm_event_system.c:2676
#4  0x0000555557e5f2ed in wm_handlers_do (C=0x7fffe3858188, event=0x7fffc5919008, handlers=0x7fffde71c598)
    at /home/zed/prog/blender/source/blender/windowmanager/intern/wm_event_system.c:2720
#5  0x0000555557e60521 in wm_event_do_handlers (C=0x7fffe3858188) at /home/zed/prog/blender/source/blender/windowmanager/intern/wm_event_system.c:3071
#6  0x0000555557e54d6f in WM_main (C=0x7fffe3858188) at /home/zed/prog/blender/source/blender/windowmanager/intern/wm.c:418
#7  0x0000555557e4f41f in main (argc=1, argv=0x7fffffffe058) at /home/zed/prog/blender/source/creator/creator.c:503