[Bug 216132] devel/gdb: at e.g. -r431413: get_core_register_section can get SIGSEGV from NULL regset arguments

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=216132

--- Comment #5 from Mark Millard <markmi at dsl-only.net> ---
(In reply to luca.pizzamiglio from comment #4)

I'm running an amd64 /usr/local/bin/gdb 7.12 in a amd64 FreeBSD context
to look at the arm core file:

# uname -apKU
FreeBSD FreeBSDx64 12.0-CURRENT FreeBSD 12.0-CURRENT #13 r312009M: Thu Jan 12
20:11:34 PST 2017    
markmi at FreeBSDx64:/usr/obj/amd64_clang/amd64.amd64/usr/src/sys/GENERIC-NODBG 
amd64 amd64 1200019 1200019

# svnlite info /usr/ports/ | grep "Re[plv]"
Relative URL: ^/head
Repository Root: svn://svn.freebsd.org/ports
Repository UUID: 35697150-7ecd-e111-bb59-0022644237b5
Revision: 431413
Last Changed Rev: 431413

# /usr/local/bin/gdb
GNU gdb (GDB) 7.12 [GDB v7.12 for FreeBSD]
. . .

The gmake and qemu_gmake.core are from a context based
on:

poudriere . . . -a arm.armv6 -x . . .

activity to build ports, my first experiments with such
cross building of ports.

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