Bootstrap assembler issue

[Neil Booth]

On mainline I get

/home/neil/src/gcc/build/gcc/xgcc -B/home/neil/src/gcc/build/gcc/ -nostdinc++ -L/home/neil/src/gcc/build/i586-pc-linux-gnu/libstdc++-v3/src -L/home/neil/src/gcc/build/i586-pc-linux-gnu/libstdc++-v3/src/.libs -B/usr/local/i586-pc-linux-gnu/bin/ -B/usr/local/i586-pc-linux-gnu/lib/ -isystem /usr/local/i586-pc-linux-gnu/include -nostdinc++ -I../../../../libstdc++-v3/include -I../../../../libstdc++-v3/include/std -I../../../../libstdc++-v3/include/c_std -I../include -I../../../../libstdc++-v3/libsupc++ -I../libio -I../../../../libstdc++-v3/libio -I../../../../libstdc++-v3/libmath -g -O2 -fvtable-thunks -D_GNU_SOURCE -fno-implicit-templates -D_GLIBCPP_NO_CONCEPT_CHECKS -Wall -Wno-format -W -Wwrite-strings -Winline -fdiagnostics-show-location=once -ffunction-sections -fdata-sections -g -c ../../../../libstdc++-v3/src/complex_io.cc  -fPIC -DPIC -o .libs/complex_io.o
xgcc: Internal error: Segmentation fault (program as)
Please submit a full bug report.

for libstdc++-v3.  This is the closest I've gotten to a bootstrap in
over 2 weeks (thanks rth!).  I vaguely remember some "as" issues being
reported before - how do I fix them?  I thought something had been
done to autoconf this, unless this is something new.

Neil.