Buildworld fails on amd64 (not the termcap issue)

Hi,

I tried to send this from work earlier; i apologise if it's a dupe but I 
can't seem to find my earlier post on the subject.

As of yesterday, and also with todays current sources (as of 10 minutes 
ago) I am unable to complete a buildworld. It fails while building libc, 
with the messages at the end of this message. Is this to be expected? 
Anything obvious I've done wrong? Buildworld has worked fine on this 
machine earlier, with the exception of a couple of times where I've 
checked out between commits or something. Is that the case this time?

Thanks,
/Eirik

--- snip ---
===> lib/libbsnmp/modules/snmp_netgraph
===> lib/libbz2
===> lib/libc
cc -O -pipe  -I/usr/src/lib/libc/include 
-I/usr/src/lib/libc/../../include -I/usr/src/lib/libc/amd64 
-D__DBINTERFACE_PRIVATE -I/usr/src/lib/libc/../../contrib/gdtoa -DINET6 
-I/usr/obj/usr/src/ ib/libc -DPOSIX_MISTAKE -I/usr/src/lib/libc/locale 
-DBROKEN_DES -DPORTMAP -DDES_BUILTIN -I/usr/src/lib/libc/rpc -DYP 
-DHESIOD -Wsystem-headers -Werror -Wall -Wno-format-y2k 
-Wno-uninitialized  c nslexer.c
/dev/stdout: In function `_nsyylex':
/dev/stdout:711: warning: label `find_rule' defined but not used
/usr/src/lib/libc/net/nslexer.l: At top level:
/dev/stdout:1678: warning: `yy_flex_realloc' defined but not used
*** Error code 1

Stop in /usr/src/lib/libc.
*** Error code 1

Stop in /usr/src/lib.
*** Error code 1

Stop in /usr/src.
*** Error code 1

Stop in /usr/src.
*** Error code 1

Stop in /usr/src.
*** Error code 1

Stop in /usr/src.