2004-12-04 HEAD fails building the 64bit libstdc++ in a non-standard setup
(biarch compiler defaulting to 32bit, patch attached to the bug report).

/home/packages/gcc/4.0/gcc-4.0-4.0ds1/build/gcc/xgcc -shared-libgcc -B/home/pack
ages/gcc/4.0/gcc-4.0-4.0ds1/build/gcc/ -nostdinc++ -L/home/packages/gcc/4.0/gcc-
4.0-4.0ds1/build/i486-linux/64/libstdc++-v3/src -L/home/packages/gcc/4.0/gcc-4.0
-4.0ds1/build/i486-linux/64/libstdc++-v3/src/.libs -B/usr/i486-linux/bin/ -B/usr
/i486-linux/lib/ -isystem /usr/i486-linux/include -isystem /usr/i486-linux/sys-i
nclude -m64 -I/home/packages/gcc/4.0/gcc-4.0-4.0ds1/build/i486-linux/64/libstdc+
+-v3/include/x86_64-linux -I/home/packages/gcc/4.0/gcc-4.0-4.0ds1/build/i486-lin
ux/64/libstdc++-v3/include -I/home/packages/gcc/4.0/gcc-4.0-4.0ds1/src/libstdc++
-v3/libsupc++ -O2 -g -O2 -g -O2 -D_GNU_SOURCE -m64 -fno-implicit-templates -Wall
 -Wextra -Wwrite-strings -Wcast-qual -fdiagnostics-show-location=once -ffunction
-sections -fdata-sections -c ../../../../../src/libstdc++-v3/src/complex_io.cc  
-fPIC -DPIC -o .libs/complex_io.o
/home/packages/gcc/4.0/gcc-4.0-4.0ds1/build/i486-linux/64/libstdc++-v3/include/c
omplex: In function 'std::basic_istream<_CharT, _Traits>& std::operator>>(std::b
asic_istream<_CharT, _Traits>&, std::complex<_Tp>&) [with _Tp = long double, _Ch
arT = char, _Traits = std::char_traits<char>]':
/home/packages/gcc/4.0/gcc-4.0-4.0ds1/build/i486-linux/64/libstdc++-v3/include/c
omplex:512: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.