port-sparc/54093: Recent test regressions on sparc

[gson%gson.org@localhost (Andreas Gustafsson)]

>Number:         54093
>Category:       port-sparc
>Synopsis:       Recent test regressions on sparc
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    port-sparc-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Apr 01 15:30:00 +0000 2019
>Originator:     Andreas Gustafsson
>Release:        NetBSD-current, source date >= 2019.03.29.20.18.09
>Organization:

>Environment:
System: NetBSD
Architecture: sparc
Machine: sparc
>Description:

The following test cases have all recently started failing on sparc:

  lib/csu/t_crt0:initfini2
  lib/csu/t_ifunc_static:ifunc_static
  usr.bin/c++/t_call_once:call_once_static
  usr.bin/c++/t_cxxruntime:cxxruntime_static
  usr.bin/c++/t_hello:hello_static
  usr.bin/c++/t_pthread_once:pthread_once_static
  usr.bin/c++/t_static_destructor:static_destructor_static
  usr.bin/cc/t_hello:hello_profile

They were broken some time during the period of build breakage that
started with the commit titled "back to jemalloc for the masses":

  2019.03.27.18.41.18 christos src/share/mk/bsd.own.mk 1.1117

and ended with

  2019.03.29.20.18.09 christos src/sys/arch/sparc/include/vmparam.h 1.48

Logs at:

  http://www.gson.org/netbsd/bugs/build/sparc/commits-2019.03.html#2019.03.29.20.18.09
  http://releng.netbsd.org/b5reports/sparc/commits-2019.03.html#2019.03.29.20.27.45

>How-To-Repeat:

>Fix: