Crash on mesh separate #92629

System Information
Operating system: Linux-5.13.0-20-generic-x86_64-with-glibc2.34 64 Bits
Graphics card: NVIDIA GeForce RTX 2080 SUPER/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 470.74

Blender Version
Broken: version: 3.1.0 Alpha, branch: master, commit date: 2021-10-29 14:55, hash: dcdbaf89bd
Caused by 43bc494892

Short description of error
When using mesh separate blender will close with a "segmentation fault" message in terminal.

Exact steps for others to reproduce the error

Open blender
select default cube and enter in edit mode
select some vertices and press P to separate. Blender will close.

Added subscriber: @EvertonSchneider

#92748 was marked as duplicate of this issue

#92716 was marked as duplicate of this issue

#92711 was marked as duplicate of this issue

#92710 was marked as duplicate of this issue

#92702 was marked as duplicate of this issue

#92685 was marked as duplicate of this issue

#92670 was marked as duplicate of this issue

This is my blender.crash.txt file

# Blender 3.1.0, Commit date: 2021-10-29 14:55, Hash dcdbaf89bd11
bpy.ops.object.editmode_toggle()  # Operator

# backtrace
/home/evercgart/blender-git/build_linux_full/bin/blender(BLI_system_backtrace+0x37) [0xb0b34d7]
/home/evercgart/blender-git/build_linux_full/bin/blender() [0x10788d7]
/lib/x86_64-linux-gnu/libc.so.6(+0x46520) [0x7f15915df520]
/home/evercgart/blender-git/build_linux_full/bin/blender(BKE_editmesh_looptri_calc_ex+0xb) [0x13c730b]
/home/evercgart/blender-git/build_linux_full/bin/blender(BKE_editmesh_looptri_calc+0x27) [0x13c73c7]
/home/evercgart/blender-git/build_linux_full/bin/blender(EDBM_update+0x88) [0x1ee4728]
/home/evercgart/blender-git/build_linux_full/bin/blender() [0x1f1ab8e]
/home/evercgart/blender-git/build_linux_full/bin/blender() [0x1480b31]
/home/evercgart/blender-git/build_linux_full/bin/blender() [0x1481087]
/home/evercgart/blender-git/build_linux_full/bin/blender(WM_operator_name_call_ptr+0x42) [0x14816c2]
/home/evercgart/blender-git/build_linux_full/bin/blender() [0x2069300]
/home/evercgart/blender-git/build_linux_full/bin/blender() [0x207c9ea]
/home/evercgart/blender-git/build_linux_full/bin/blender() [0x1484a31]
/home/evercgart/blender-git/build_linux_full/bin/blender() [0x1485add]
/home/evercgart/blender-git/build_linux_full/bin/blender(wm_event_do_handlers+0x250) [0x1486070]
/home/evercgart/blender-git/build_linux_full/bin/blender(WM_main+0x20) [0x147b3a0]
/home/evercgart/blender-git/build_linux_full/bin/blender(main+0x33e) [0xf639be]
/lib/x86_64-linux-gnu/libc.so.6(+0x2dfd0) [0x7f15915c6fd0]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x7d) [0x7f15915c707d]
/home/evercgart/blender-git/build_linux_full/bin/blender(_start+0x25) [0x1074d55]

# Python backtrace

Added subscriber: @deadpin

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

Git bisect seems to blame 43bc494892

Added subscriber: @mont29

Added subscriber: @PratikPB2123

Recent regression so changing the priority to High

Added subscriber: @Wovchick

Added subscriber: @Alaska

Added subscribers: @RL, @dupoxy

Added subscriber: @MaybeLamia

Added subscriber: @AndreasLutsch

Added subscriber: @bartus-4

This issue was referenced by e85e126e3f

This issue was referenced by 8fbbd69946

Changed status from 'Confirmed' to: 'Resolved'

Added subscriber: @Kent-Davis

Added subscribers: @borschberry, @ThomasDinges

Added subscriber: @lionheart001

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Crash on mesh separate #92629