toolchain/51206: can not build -current on sparc64

[martin%NetBSD.org@localhost]

>Number:         51206
>Category:       toolchain
>Synopsis:       can not build -current on sparc64
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    toolchain-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue May 31 19:00:00 +0000 2016
>Originator:     Martin Husemann
>Release:        NetBSD 7.99.30
>Organization:
The NetBSD Foundation, Inc.
>Environment:
System: NetBSD thirdstage.duskware.de 7.99.30 NetBSD 7.99.30 (MODULAR) #518: Tue May 31 18:38:55 CEST 2016 martin%thirdstage.duskware.de@localhost:/usr/src/sys/arch/sparc64/compile/MODULAR sparc64
Architecture: sparc64
Machine: sparc64
>Description:

Trying to build natively on sparc64 reproducably (at least kinda) fails
for me:

--- //usr/libdata/debug/usr/lib/libradius.so.4.0.debug ---
[1]   Segmentation fault (core dumped) /usr/tools/bin/s...
*** [//usr/libdata/debug/usr/lib/libradius.so.4.0.debug] Error code 139

The core files have truncated names:

./lib/libradius/sparc64--netbsd-.core:                 ELF 64-bit MSB core file SPARC V9, total store ordering, version 1 (SYSV), NetBSD-style, from 'sparc64--netbsd-' (signal 11)
./external/bsd/atf/lib/libatf-c/sparc64--netbsd-.core: ELF 64-bit MSB core file SPARC V9, total store ordering, version 1 (SYSV), NetBSD-style, from 'sparc64--netbsd-' (signal 11)

so I can not easily debug what is going on.

There are two issues here: the crash (likely aslr/mprotect related, trying
with the relevant sysctls disabled) and the truncated core file names.

>How-To-Repeat:
run build.sh on sparc64

>Fix:
n/a