libstdc++ compile problem in head

[F. Heitkamp]

I get this error when compiling gcc cvs head.
My Linux is using a recent version of glibc with NPTL.
I am not sure if NPTL causes the problem.
Also --disable-werror and passing -DWERROR=-Wno-error do not disable the 
warnings.

This is how I compile glibc:
../glibc-cvs/libc/configure \
          --prefix=/usr   \
          --sysconfdir=/etc       \
          --localstatedir=/var    \
          --infodir=/usr/share/info       \
          --mandir=/usr/share/man \
          --enable-sanity-checks  \
          --enable-add-ons=nptl \
          --enable-all-warnings \
          --with-tls \
          --with-gmp=/usr \


make[4]: Entering directory 
`/drives/work/src/gcc-cvs-bin/i686-pc-linux-gnu/libstdc++-v3/libsupc++'
/bin/sh ../libtool --tag CXX --tag disable-shared --mode=compile 
/drives/work/src/gcc-cvs-bin/gcc/xgcc -shared-libgcc 
-B/drives/work/src/gcc-cvs-bin/gcc/ -nostdinc++ 
-L/drives/work/src/gcc-cvs-bin/i686-pc-linux-gnu/libstdc++-v3/src 
-L/drives/work/src/gcc-cvs-bin/i686-pc-linux-gnu/libstdc++-v3/src/.libs 
-B/usr/gcc_cvs//bin/ -B/usr/gcc_cvs//lib/ -isystem /usr/gcc_cvs//include 
-isystem /usr/gcc_cvs//sys-include 
-I/drives/work/src/gcc-cvs/gcc/libstdc++-v3/../gcc 
-I/drives/work/src/gcc-cvs-bin/i686-pc-linux-gnu/libstdc++-v3/include/ 
-I/drives/work/src/gcc-cvs-bin/i686-pc-linux-gnu/libstdc++-v3/include 
-I/drives/work/src/gcc-cvs/gcc/libstdc++-v3/libsupc++  -g -O2 
-D_GNU_SOURCE -fno-implicit-templates -prefer-pic -Wall -Wextra 
-Wwrite-strings -Wcast-qual -Werror 
-fdiagnostics-show-location=once-ffunction-sections -fdata-sections  -c -o 
guard.lo ../../../../gcc-cvs/gcc/libstdc++-v3/libsupc++/guard.cc
/drives/work/src/gcc-cvs-bin/gcc/xgcc -shared-libgcc 
-B/drives/work/src/gcc-cvs-bin/gcc/ -nostdinc++ 
-L/drives/work/src/gcc-cvs-bin/i686-pc-linux-gnu/libstdc++-v3/src 
-L/drives/work/src/gcc-cvs-bin/i686-pc-linux-gnu/libstdc++-v3/src/.libs 
-B/usr/gcc_cvs//bin/ -B/usr/gcc_cvs//lib/ -isystem /usr/gcc_cvs//include 
-isystem /usr/gcc_cvs//sys-include 
-I/drives/work/src/gcc-cvs/gcc/libstdc++-v3/../gcc -I 
/drives/work/src/gcc-cvs-bin/i686-pc-linux-gnu/libstdc++-v3/include/ 
-I/drives/work/src/gcc-cvs-bin/i686-pc-linux-gnu/libstdc++-v3/include 
-I/drives/work/src/gcc-cvs/gcc/libstdc++-v3/libsupc++ -g -O2 -D_GNU_SOURCE 
-fno-implicit-templates -W all -Wextra -Wwrite-strings -Wcast-qual -Werror 
-fdiagnostics-show-location=once -ffunction-sections -fdata-sections -c 
../../../../gcc-cvs/gcc/libstdc++-v3/libsupc++/guard.cc  -fPIC -DPIC -o 
guard.o
cc1plus: warnings being treated as errors
../../../../gcc-cvs/gcc/libstdc++-v3/libsupc++/guard.cc:64: warning: 
missing initializer for member 'pthread_mutex_t::<anonymous 
struct>::__nusers'
../../../../gcc-cvs/gcc/libstdc++-v3/libsupc++/guard.cc:64: warning: 
missing initializer for member 'pthread_mutex_t::<anonymous 
struct>::__spins'
make[4]: *** [guard.lo] Error 1
make[4]: Leaving directory 
`/drives/work/src/gcc-cvs-bin/i686-pc-linux-gnu/libstdc++-v3/libsupc++'
make[3]: *** [all-recursive] Error 1
make[3]: Leaving directory 
`/drives/work/src/gcc-cvs-bin/i686-pc-linux-gnu/libstdc++-v3'
make[2]: *** [all] Error 2
make[2]: Leaving directory 
`/drives/work/src/gcc-cvs-bin/i686-pc-linux-gnu/libstdc++-v3'
make[1]: *** [all-target-libstdc++-v3] Error 2
make[1]: Leaving directory `/drives/work/src/gcc-cvs-bin'
make: *** [bootstrap] Error 2

Fred