seen with gcc HEAD 20030815

... but the reason isn't seen because of the output redirection to /dev/null

/bin/sh ../libtool --tag CXX --mode=compile
/build/buildd/gcc-snapshot-20030815/build/gcc/xgcc -shared-libgcc
-B/build/buildd/gcc-snapshot-20030815/build/gcc/ -nostdinc++ 
-L/build/buildd/gcc-snapshot-20030815/build/mips-linux/libstdc++-v3/src
-L/build/buildd/gcc-snapshot-20030815/build/mips-linux/libstdc++-v3/src/.libs
-B/usr/lib/gcc-snapshot/mips-linux/bin/ -B/usr/lib/gcc-snapshot/mips-linux/lib/
-isystem /usr/lib/gcc-snapshot/mips-linux/include -isystem
/usr/lib/gcc-snapshot/mips-linux/sys-include -nostdinc++
-I/build/buildd/gcc-snapshot-20030815/build/mips-linux/libstdc++-v3/include/mips-linux
-I/build/buildd/gcc-snapshot-20030815/build/mips-linux/libstdc++-v3/include
-I/build/buildd/gcc-snapshot-20030815/src/libstdc++-v3/libsupc++
-I/build/buildd/gcc-snapshot-20030815/src/libstdc++-v3/libmath   -O2 -g -O2  -g
-O2 -D_GNU_SOURCE -fno-implicit-templates  -Wall -Wno-format -W -Wwrite-strings
 -fdiagnostics-show-location=once  -ffunction-sections -fdata-sections  -c -o codecv
 t.lo `test -f '../../../../src/libstdc++-v3/src/codecvt.cc' || echo
'../../../../src/libstdc++-v3/src/'`../../../../src/libstdc++-v3/src/codecvt.cc
/build/buildd/gcc-snapshot-20030815/build/gcc/xgcc -shared-libgcc
-B/build/buildd/gcc-snapshot-20030815/build/gcc/ -nostdinc++
-L/build/buildd/gcc-snapshot-20030815/build/mips-linux/libstdc++-v3/src
-L/build/buildd/gcc-snapshot-20030815/build/mips-linux/libstdc++-v3/src/.libs
-B/usr/lib/gcc-snapshot/mips-linux/bin/ -B/usr/lib/gcc-snapshot/mips-linux/lib/
-isystem /usr/lib/gcc-snapshot/mips-linux/include -isystem
/usr/lib/gcc-snapshot/mips-linux/sys-include -nostdinc++
-I/build/buildd/gcc-snapshot-20030815/build/mips-linux/libstdc++-v3/include/mips-linux
-I/build/buildd/gcc-snapshot-20030815/build/mips-linux/libstdc++-v3/include
-I/build/buildd/gcc-snapshot-20030815/src/libstdc++-v3/libsupc++
-I/build/buildd/gcc-snapshot-20030815/src/libstdc++-v3/libmath -O2 -g -O2 -g -O2
-D_GNU_SOURCE -fno-implicit-templates -Wall -Wno-format -W -Wwrite-strings
-fdiagnostics-show-location=once -ffunction-sections -fdata-sections -c
../../../../src/libstdc++-v3/src/codecvt.cc  -fPIC -DPIC -o .
 libs/codecvt.o
../../../../src/libstdc++-v3/src/codecvt.cc:152: warning: 'void 
   __static_initialization_and_destruction_0(int, int)' defined but not used
/build/buildd/gcc-snapshot-20030815/build/gcc/xgcc -shared-libgcc
-B/build/buildd/gcc-snapshot-20030815/build/gcc/ -nostdinc++
-L/build/buildd/gcc-snapshot-20030815/build/mips-linux/libstdc++-v3/src
-L/build/buildd/gcc-snapshot-20030815/build/mips-linux/libstdc++-v3/src/.libs
-B/usr/lib/gcc-snapshot/mips-linux/bin/ -B/usr/lib/gcc-snapshot/mips-linux/lib/
-isystem /usr/lib/gcc-snapshot/mips-linux/include -isystem
/usr/lib/gcc-snapshot/mips-linux/sys-include -nostdinc++
-I/build/buildd/gcc-snapshot-20030815/build/mips-linux/libstdc++-v3/include/mips-linux
-I/build/buildd/gcc-snapshot-20030815/build/mips-linux/libstdc++-v3/include
-I/build/buildd/gcc-snapshot-20030815/src/libstdc++-v3/libsupc++
-I/build/buildd/gcc-snapshot-20030815/src/libstdc++-v3/libmath -O2 -g -O2 -g -O2
-D_GNU_SOURCE -fno-implicit-templates -Wall -Wno-format -W -Wwrite-strings
-fdiagnostics-show-location=once -ffunction-sections -fdata-sections -c
../../../../src/libstdc++-v3/src/codecvt.cc -o codecvt.o >/de
 v/null 2>&1
make[6]: *** [codecvt.lo] Error 1