Bootstrapping revision 147608 on powerpc-apple-darwin9 failed at stage2 with:

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/opt/gcc/darwin_buildw/./prev-gcc/xgcc -B/opt/gcc/darwin_buildw/./prev-gcc/ -B/opt/gcc/gcc4.5w/powerpc-apple-darwin9/bin/ -B/opt/gcc/gcc4.5w/powerpc-apple-darwin9/bin/ -B/opt/gcc/gcc4.5w/powerpc-apple-darwin9/lib/ -isystem /opt/gcc/gcc4.5w/powerpc-apple-darwin9/include -isystem /opt/gcc/gcc4.5w/powerpc-apple-darwin9/sys-include    -c  -g -O2 -mdynamic-no-pic -DIN_GCC   -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wcast-qual -Wold-style-definition -Wc++-compat -Wmissing-format-attribute -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Werror -fno-common  -DHAVE_CONFIG_H -I. -I. -I../../gcc-4.5-work/gcc -I../../gcc-4.5-work/gcc/. -I../../gcc-4.5-work/gcc/../include -I../../gcc-4.5-work/gcc/../libcpp/include -I/sw/include  -I../../gcc-4.5-work/gcc/../libdecnumber -I../../gcc-4.5-work/gcc/../libdecnumber/dpd -I../libdecnumber -I/sw/include  -I/sw/include -DCLOOG_PPL_BACKEND   ../../gcc-4.5-work/gcc/combine.c -o combine.o
cc1: warnings being treated as errors
../../gcc-4.5-work/gcc/combine.c: In function 'try_combine':
../../gcc-4.5-work/gcc/combine.c:2766: error: logical 'and' of mutually exclusive tests is always false
../../gcc-4.5-work/gcc/combine.c:2787: error: logical 'and' of mutually exclusive tests is always false
../../gcc-4.5-work/gcc/combine.c:2789: error: logical 'and' of mutually exclusive tests is always false
make[3]: *** [combine.o] Error 1
make[2]: *** [all-stage2-gcc] Error 2
make[1]: *** [stage2-bubble] Error 2
make: *** [all] Error 2