bin/51582: compiler internal error

[clare%csel.org@localhost]

>Number:         51582
>Category:       bin
>Synopsis:       compiler internal error
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    bin-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Oct 29 10:50:00 +0000 2016
>Originator:     DOYASHIKI Shinichi
>Release:        NetBSD 7.99.41 around 2016-10
>Organization:
	at home
>Environment:
System: NetBSD kanako.csel.org 7.99.41 NetBSD 7.99.41 (KANAKO) #2: Sat Oct 29 17:31:22 JST 2016 clare%kanako.csel.org@localhost:/export/stage/hack/sys/arch/amd64/compile/KANAKO amd64
Architecture: x86_64
Machine: amd64
>Description:
	compiler internal error
>How-To-Repeat:
$ cat main.c
#include <stdio.h>

int main()
{
    printf("compiler ok\n");
    return 0;
}
$ make main
cc -O2   -o main main.c 
cc: internal compiler error: Segmentation fault (program as received signal 11)
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://www.NetBSD.org/support/send-pr.html> for instructions.
*** Error code 4

Stop.
make: stopped in /export/stage/hack

$ cc -v
Using built-in specs.
COLLECT_GCC=cc
COLLECT_LTO_WRAPPER=/usr/libexec/lto-wrapper
Target: x86_64--netbsd
Configured with: /usr/src/tools/gcc/../../external/gpl3/gcc/dist/configure --target=x86_64--netbsd --enable-long-long --enable-threads --with-bugurl=http://www.NetBSD.org/Misc/send-pr.html --with-pkgversion='NetBSD nb1 20160606' --with-system-zlib --enable-__cxa_atexit --enable-libstdcxx-time=rt --enable-libstdcxx-threads --with-tune=nocona --with-diagnostics-color=auto-if-env --with-mpc-lib=/var/obj/mknative/amd64-x86_64/usr/src/external/lgpl3/mpc/lib/libmpc --with-mpfr-lib=/var/obj/mknative/amd64-x86_64/usr/src/external/lgpl3/mpfr/lib/libmpfr --with-gmp-lib=/var/obj/mknative/amd64-x86_64/usr/src/external/lgpl3/gmp/lib/libgmp --with-mpc-include=/usr/src/external/lgpl3/mpc/dist/src --with-mpfr-include=/usr/src/external/lgpl3/mpfr/dist/src --with-gmp-include=/usr/src/external/lgpl3/gmp/lib/libgmp/arch/x86_64 --enable-tls --disable-multilib --disable-symvers --disable-libstdcxx-pch --build=x86_64-unknown-netbsd7.0 --host=x86_64--netbsd --with-sysroot=/var/obj/mknative/amd64-x86_64/usr/
 src/destdir.amd64
Thread model: posix
gcc version 5.4.0 (nb1 20160606) 
>Fix:
	unknown...