GCC ICE failure compiling openssh-6.6_p1-r1

Hi,

I've just encountered this error in openssh-6.6_p1-r1, while doing an
'emerge -uva world':

alpha-unknown-linux-gnu-gcc -mieee -O2 -mcpu=ev56 -Wall -Wpointer-arith 
-Wuninitialized -Wsign-compare -Wformat-security -Wno-pointer-sign 
-Wno-unused-result -fno-strict-aliasing  -ftrapv -fno-builtin-memset 
-fPIE  -I. -I.  -DSSHDIR=\"/etc/ssh\" 
-D_PATH_SSH_PROGRAM=\"/usr/bin/ssh\" 
-D_PATH_SSH_ASKPASS_DEFAULT=\"/usr/lib/misc/ssh-askpass\" 
-D_PATH_SFTP_SERVER=\"/usr/lib/misc/sftp-server\" 
-D_PATH_SSH_KEY_SIGN=\"/usr/lib/misc/ssh-keysign\" 
-D_PATH_SSH_PKCS11_HELPER=\"/usr/lib/misc/ssh-pkcs11-helper\" 
-D_PATH_SSH_PIDDIR=\"/var/run\" 
-D_PATH_PRIVSEP_CHROOT_DIR=\"/var/empty\" -DHAVE_CONFIG_H -c ssh-keygen.c
ssh-keygen.c: In function 'do_known_hosts':
ssh-keygen.c:1230:1: internal compiler error: in hoist_code, at gcse.c:3123
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://bugs.gentoo.org/> for instructions.
make: *** [ssh-keygen.o] Error 1
  * ERROR: net-misc/openssh-6.6_p1-r1::gentoo failed (compile phase):
  *   emake failed

My GCC is this one:

# alpha-unknown-linux-gnu-gcc --version
alpha-unknown-linux-gnu-gcc (Gentoo 4.7.3-r1 p1.4, pie-0.5.5) 4.7.3

Any ideas?
-- 
Andrew Gaylard