port-vax/54043: aft-run throws assertion / dumps core on VAX

[thorpej%me.com@localhost]

>Number:         54043
>Category:       port-vax
>Synopsis:       aft-run throws assertion / dumps core on VAX
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-vax-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Mar 06 05:50:00 +0000 2019
>Originator:     Jason Thorpe
>Release:        8.99.34
>Organization:
The NetBSD Foundation
>Environment:
NetBSD 8.99.34 (GENERIC) #0: Thu Feb 28 17:41:27 UTC 2019 mkrepro%mkrepro.NetBSD.org@localhost:/usr/src/sys/arch/vax/compile/GENERIC
>Description:
Environment is a simulated MicroVAX 3900 (SIMH).  Stock NetBSD kernel built by the NetBSD releng.

Running an ATF test plan causes atf-run to dump core.  I haven't looked deeper into under what circumstances it crashes (I don't know specifically if it's because a test case fails, for example).  Upon further inspection, it crashes with standard tests in /usr/tests, as well.

vax-vm:thorpej !$ atf-run ./t_ufetchstore
Content-Type: application/X-atf-tps; version="3"

info: atf.version, Automated Testing Framework 0.20 (atf-0.20)
info: tests.root, /home/thorpej
info: time.start, Tue Mar 5 13:38:30 PST 2019
info: uname.sysname, NetBSD
info: uname.nodename, vax-vm
info: uname.release, 8.99.34
info: uname.version, NetBSD 8.99.34 (GENERIC) #0: Thu Feb 28 17:41:27 UTC 2019 mkrepro%mkrepro.NetBSD.org@localhost:/usr/src/sys/arch/vax/compile/GENERIC
info: uname.machine, vax
info: env, PS1=vax-vm:thorpej !$ 
info: env, ARCH=vax
info: env, BLOCKSIZE=1024
info: env, PWD=/home/thorpej
info: env, HOME=/root
info: env, _=/usr/bin/su
info: env, LESS=LXR
info: env, PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/pkg/bin:/usr/pkg/sbin:/usr/local/bin:/nbsd/tools/bin
info: env, TERM=vt100
info: env, USER=thorpej
info: env, PAGER=less
info: env, OS=NetBSD
info: env, HOSTNAME=vax-vm
info: env, EDITOR=vi
info: env, LOGNAME=thorpej
info: env, SU_FROM=thorpej
info: env, SHELL=/bin/sh
info: env, CVS_RSH=ssh
info: env, GITHUB=git%github.com@localhost:
tps-count: 1
tp-start: 1551821913.82419, ./t_ufetchstore, 12
tc-start: 1551821913.82419, ufetch_16
terminate called after throwing an instance of 'tools::system_error'
terminate called recursively
[1]   Abort trap (core dumped) atf-run ./t_ufetchstore
vax-vm:thorpej !$

This same test program runs fine on x86(32,64), sparc, and arm(32,64).
>How-To-Repeat:
Run a test plan with atf-run.
>Fix:
unknown.