bin/51586: internal compiler error

[sdhoya%z-planet.co.jp@localhost]

>Number:         51586
>Category:       bin
>Synopsis:       internal compiler error
>Confidential:   no
>Severity:       critical
>Priority:       low
>Responsible:    bin-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Oct 31 03:45:00 +0000 2016
>Originator:     DOYASHIKI Shinichi
>Release:        NetBSD 7.99.40
>Organization:
Zenken Corporation
>Environment:
NetBSD smsdc0.hq.z-planet.co.jp 7.99.40 NetBSD 7.99.40 (SMSDC) #0: Fri Oct 21 10:12:11 JST 2016  sdhoya%smsdc0.hq.z-planet.co.jp@localhost:/export/stage/src/sys/arch/amd64/compile/SMSDC amd64
>Description:
internal compiler error generated after "make build".
cvs update'd in this morning (problematic older sources are lost).
# cd /path/to/src; make -j3 build
$ 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/pgsql/work
$ as --version
GNU assembler (NetBSD Binutils nb1) 2.26.1
Copyright (C) 2015 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License version 3 or later.
This program has absolutely no warranty.
This assembler was configured for a target of `x86_64--netbsd'.
$ ld --version
GNU ld (NetBSD Binutils nb1) 2.26.1
Copyright (C) 2015 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License version 3 or (at your option) a later version.
This program has absolutely no warranty.
$ gdb /usr/bin/as as.core
GNU gdb (GDB) 7.12
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64--netbsd".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from /usr/bin/as...(no debugging symbols found)...done.
[New process 1]
Core was generated by `as'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x000076e5b530c056 in strcmp () from /usr/lib/libc.so.12
(gdb) bt
#0  0x000076e5b530c056 in strcmp () from /usr/lib/libc.so.12
#1  0x000000002b03b358 in md_begin ()
#2  0x000000002b05df26 in main ()
(gdb) quit

>How-To-Repeat:
unknown
>Fix:
unknown