FreeBSD 6.0 buildworld failed

[Viktorija]

Hello!

After cvsuping system i tried to make buildworld on FreeBSD 6.0, but got the following error:
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>>> stage 1.2: bootstrap tools
--------------------------------------------------------------

[skip]


mkdep -f .depend -a    -I/usr/obj/usr/src/tmp/legacy/usr/include -I/usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/lib -I/usr/src/gnu/usr.bin/gperf  /usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/src/bool-array.cc /usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/src/gen-perf.cc /usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/src/hash-table.cc /usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/src/iterator.cc /usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/src/key-list.cc /usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/src/list-node.cc /usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/src/main.cc /usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/src/new.cc /usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/src/options.cc /usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/src/read-line.cc /usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/src/trace.cc /usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/src/vectors.cc /usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/src/v
 ersion.cc /usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/lib/hash.cc   
cc: Internal error: Segmentation fault: 11 (program cc1plus)
Please submit a full bug report.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
mkdep: compile failed
*** Error code 1

Stop in /usr/src/gnu/usr.bin/gperf.
*** Error code 1

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

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

Stop in /usr/src.



Why it is happening? Where can be a problem?

Thanks a lot,
Viktoria