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Bootstrap is broken on x86_64, comparison between signed and unsigned in optabs.c


gcc Revision: 126372, bootstrap from clean directory breaks with:

/home/uros/gcc-build/./prev-gcc/xgcc -B/home/uros/gcc-build/./prev-gcc/ -B/usr/local/x86_64-unknown-linux-gnu/bin/ -c -g -O2 -DIN_GCC -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -Wmissing-format-attribute -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Werror -fno-common -DHAVE_CONFIG_H -I. -I. -I../../gcc-svn/trunk/gcc -I../../gcc-svn/trunk/gcc/. -I../../gcc-svn/trunk/gcc/../include -I../../gcc-svn/trunk/gcc/../libcpp/include -I../../gcc-svn/trunk/gcc/../libdecnumber -I../../gcc-svn/trunk/gcc/../libdecnumber/bid -I../libdecnumber ../../gcc-svn/trunk/gcc/optabs.c -o optabs.o
cc1: warnings being treated as errors
../../gcc-svn/trunk/gcc/optabs.c: In function ‘expand_binop’:
../../gcc-svn/trunk/gcc/optabs.c:1463: error: comparison between signed and unsigned
gmake[3]: *** [optabs.o] Error 1
gmake[3]: *** Waiting for unfinished jobs....
rm fsf-funding.pod gcov.pod gfdl.pod cpp.pod gpl.pod gfortran.pod gcc.pod
gmake[3]: Leaving directory `/home/uros/gcc-build/gcc'
gmake[2]: *** [all-stage2-gcc] Error 2
gmake[2]: Leaving directory `/home/uros/gcc-build'
gmake[1]: *** [stage2-bubble] Error 2
gmake[1]: Leaving directory `/home/uros/gcc-build'
gmake: *** [all] Error 2

It must be very recent change.


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