make libstdc++ error

[Suken Woo]

after cvsup'd from 5.0R to 5.1R and get error at installworld
thx any info.
c++  -O -pipe -mcpu=pentiumpro -DIN_GLIBCPP_V3 -DHAVE_CONFIG_H
-I/usr/src/gnu/lib/libstdc++
-I/usr/src/gnu/lib/libstdc++/../../../contrib/libstdc++/libsupc++
-I/usr/src/gnu/lib/libstdc++/../../../contrib/gcc
-fno-implicit-templates -ffunction-sections -fdata-sections
-Wno-deprecated -c /usr/src/contrib/libstdc++/src/locale.cc -o locale.o
/usr/src/contrib/libstdc++/src/locale.cc:454: `char
   std::locale::facet::_S_c_name[2]' is not a static member of `class
   std::locale::facet'
*** Error code 1

Stop in /usr/src/gnu/lib/libstdc++.
*** Error code 1

Stop in /usr/src/gnu/lib.