segfault in buildworld while creating osreldate.h

[Randy Bush]

amd64
fresh svn of head

made and installed kernel.  
rebooted.

...
===> gnu/usr.bin/texinfo (installincludes)
===> gnu/usr.bin/texinfo/libtxi (installincludes)
===> gnu/usr.bin/texinfo/makeinfo (installincludes)
===> gnu/usr.bin/texinfo/info (installincludes)
===> gnu/usr.bin/texinfo/infokey (installincludes)
===> gnu/usr.bin/texinfo/install-info (installincludes)
===> gnu/usr.bin/texinfo/texindex (installincludes)
===> gnu/usr.bin/texinfo/doc (installincludes)
===> include (includes)
cd /usr/src/include; make buildincludes; make installincludes
creating osreldate.h from newvers.sh
Segmentation fault (core dumped)
*** Error code 139

it left no core

randy