https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83499

            Bug ID: 83499
           Summary: [8 Regression] bootstrap fails in stage3 on
                    arm-linux-gnueabihf (as: unaligned opcodes detected in
                    executable segment)
           Product: gcc
           Version: 8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: doko at gcc dot gnu.org
  Target Milestone: ---

seen with r254551 20171218 and r255822 20171219 and with a 20171213 build.

last successful bootstrap was 20171128. all builds using a recent binutils 2.29
branch.

/<<PKGBUILDDIR>>/build/./prev-gcc/xg++ -B/<<PKGBUILDDIR>>/build/./prev-gcc/
-B/usr/arm-linux-gnueabihf/bin/ -nostdinc++
-B/<<PKGBUILDDIR>>/build/prev-arm-linux-gnueabihf/libstdc++-v3/src/.libs
-B/<<PKGBUILDDIR>>/build/prev-arm-linux-gnueabihf/libstdc++-v3/libsupc++/.libs 
-I/<<PKGBUILDDIR>>/build/prev-arm-linux-gnueabihf/libstdc++-v3/include/arm-linux-gnueabihf
 -I/<<PKGBUILDDIR>>/build/prev-arm-linux-gnueabihf/libstdc++-v3/include 
-I/<<PKGBUILDDIR>>/src/libstdc++-v3/libsupc++
-L/<<PKGBUILDDIR>>/build/prev-arm-linux-gnueabihf/libstdc++-v3/src/.libs
-L/<<PKGBUILDDIR>>/build/prev-arm-linux-gnueabihf/libstdc++-v3/libsupc++/.libs
-fno-PIE -c  -DIN_GCC_FRONTEND -DIN_GCC_FRONTEND -DIN_GCC_FRONTEND -g -O2
-fno-stack-protector -DIN_GCC     -fno-exceptions -fno-rtti
-fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings
-Wcast-qual -Wmissing-format-attribute -Woverloaded-virtual -pedantic
-Wno-long-long -Wno-variadic-macros -Wno-overlength-strings   -DHAVE_CONFIG_H
-I. -Ic-family -I../../src/gcc -I../../src/gcc/c-family
-I../../src/gcc/../include -I../../src/gcc/../libcpp/include 
-I../../src/gcc/../libdecnumber -I../../src/gcc/../libdecnumber/dpd
-I../libdecnumber -I../../src/gcc/../libbacktrace   -o c-family/c-omp.o -MT
c-family/c-omp.o -MMD -MP -MF c-family/.deps/c-omp.TPo
../../src/gcc/c-family/c-omp.c
/tmp/ccVKEiqc.s: Assembler messages:
/tmp/ccVKEiqc.s: Error: unaligned opcodes detected in executable segment
Makefile:1110: recipe for target 'c-family/c-omp.o' failed
make[5]: *** [c-family/c-omp.o] Error 1
make[5]: *** Waiting for unfinished jobs....
rm gcov.pod fsf-funding.pod gpl.pod cpp.pod gfdl.pod gcc.pod gcov-dump.pod
gfortran.pod gcov-tool.pod gccgo.pod
make[5]: Leaving directory '/<<PKGBUILDDIR>>/build/gcc'
Makefile:4731: recipe for target 'all-stage3-gcc' failed
make[4]: *** [all-stage3-gcc] Error 2
make[4]: Leaving directory '/<<PKGBUILDDIR>>/build'
Makefile:24793: recipe for target 'stage3-bubble' failed
make[3]: *** [stage3-bubble] Error 2
make[3]: Leaving directory '/<<PKGBUILDDIR>>/build'
Makefile:24856: recipe for target 'bootstrap' failed
make[2]: *** [bootstrap] Error 2

         --enable-languages=c,ada,c++,go,fortran,objc,obj-c++
         --prefix=/usr
         --with-gcc-major-version-only
         --program-suffix=-8
         --program-prefix=arm-linux-gnueabihf-
         --enable-shared
         --enable-linker-build-id
         --libexecdir=/usr/lib
         --without-included-gettext
         --enable-threads=posix
         --libdir=/usr/lib
         --enable-nls
         --with-sysroot=/
         --enable-clocale=gnu
         --enable-libstdcxx-debug
         --enable-libstdcxx-time=yes
         --with-default-libstdcxx-abi=new
         --enable-gnu-unique-object
         --disable-libitm
         --disable-libquadmath
         --enable-plugin
         --enable-default-pie
         --with-system-zlib
         --enable-objc-gc=auto
         --enable-multiarch
         --enable-multilib
         --disable-sjlj-exceptions
         --with-arch=armv7-a
         --with-fpu=vfpv3-d16
         --with-float=hard
         --with-mode=thumb
         --disable-werror
         --enable-multilib
         --enable-checking=release
         --build=arm-linux-gnueabihf
         --host=arm-linux-gnueabihf
         --target=arm-linux-gnueabihf

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