Dear Maintainer,

	Situation: Developing in a check-out of the Zephyr project repository.
	A lot of files from simulation runs had been deleted ("twister* in the lines below)
	Had switched branch, wanted to updated the tags database

	Using ggtags from Emacs, the "Update tag files" menu item reported a segmentation fault:
----------
-*- mode: compilation; default-directory: "~/repoutsjekk/zephyrproject/zephyr/subsys/bluetooth/audio/" -*-
Compilation started at Thu Jan 27 13:09:44

global -u
Segmentation fault

global -u exited abnormally with code 1 at Thu Jan 27 13:10:06
--------

	Running "global -u" from the command line gave the same result - segfault (below is output from "global -u -vv"):
--------
[Thu Jan 27 13:18:50 CET 2022] Gtags started.
 Using configuration file '/etc/gtags/gtags.conf'.
 Using configuration label 'default'.
 Tag found in '/home/asbjorn/repoutsjekk/zephyrproject/zephyr'.
 Incremental updating.
[Thu Jan 27 13:19:12 CET 2022] Updating 'GTAGS' and 'GRTAGS'.
 [1/267521] deleting tags of doc/_build/src/guides/test/mocking.c
 [2/267521] deleting tags of twister-out.12/native_posix/tests/bluetooth/shell/bluetooth.shell.audio.no_otsc/zephyr/include/generated/devicetree_unfixed.h
 [3/267521] deleting tags of twister-out.12/native_posix/tests/bluetooth/shell/bluetooth.shell.audio.no_otsc/zephyr/include/generated/syscall_list.h
 [4/267521] deleting tags of twister-out.12/native_posix/tests/bluetooth/shell/bluetooth.shell.audio.no_otsc/zephyr/include/generated/otype-to-size.h
 [5/267521] deleting tags of twister-out.12/native_posix/tests/bluetooth/shell/bluetooth.shell.audio.no_otsc/zephyr/include/generated/autoconf.h
 [6/267521] deleting tags of twister-out.12/native_posix/tests/bluetooth/shell/bluetooth.shell.audio.no_otsc/zephyr/include/generated/offsets.h

 [...]

 [267519/267521] deleting tags of twister-out.5/qemu_x86/tests/bluetooth/shell/bluetooth.shell.shell_br/zephyr/misc/generated/configs.c
 [267520/267521] deleting tags of twister-out.5/qemu_x86/tests/bluetooth/shell/bluetooth.shell.shell_br/CMakeFiles/3.21.2/CompilerIdCXX/CMakeCXXCompilerId.cpp
 [267521/267521] deleting tags of twister-out.5/qemu_x86/tests/bluetooth/shell/bluetooth.shell.shell_br/CMakeFiles/3.21.2/CompilerIdC/CMakeCCompilerId.c
Segmentation fault
------------------

	Deleting GPATH, GRTAGS and GTAGS and runnning "gtags" brought the system back to a working state.