[Bug bootstrap/59206] New: [4.9 regression] many bootstrap comparison failures on armv5tel-linux-gnueabi

["mikpelinux at gmail dot com" <gcc-bugzilla@gcc.gnu.org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59206

            Bug ID: 59206
           Summary: [4.9 regression] many bootstrap comparison failures on
                    armv5tel-linux-gnueabi
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
          Assignee: unassigned at gcc dot gnu.org
          Reporter: mikpelinux at gmail dot com

Attempting to bootstrap gcc-4.9-20131117 on armv5tel-linux-gnueabi fails with
many bootstrap comparison failures:

Comparing stages 2 and 3
warning: gcc/cc1plus-checksum.o differs
warning: gcc/cc1-checksum.o differs
Bootstrap comparison failure!
gcc/rtlanal.o differs
gcc/tree-ssa-loop-ivopts.o differs
gcc/regcprop.o differs
gcc/cfgrtl.o differs
gcc/ubsan.o differs
gcc/reload1.o differs
gcc/tree-loop-distribution.o differs
gcc/build/print-rtl.o differs
gcc/fortran/intrinsic.o differs
gcc/fortran/parse.o differs
gcc/fortran/scanner.o differs
gcc/fortran/simplify.o differs
gcc/fortran/error.o differs
gcc/fortran/resolve.o differs
gcc/expr.o differs
gcc/store-motion.o differs
gcc/tree.o differs
gcc/profile.o differs
gcc/final.o differs
gcc/collect2.o differs
gcc/tree-vrp.o differs
gcc/ada/lib-writ.o differs
gcc/ada/exp_ch7.o differs
gcc/ada/sem_warn.o differs
gcc/ada/bindgen.o differs
gcc/ada/prep.o differs
gcc/ada/rtsfind.o differs
gcc/ada/bcheck.o differs
gcc/ada/targparm.o differs
gcc/ada/scn.o differs
gcc/ada/osint.o differs
gcc/ada/scans.o differs
gcc/ada/sem_dim.o differs
gcc/ada/einfo.o differs
gcc/ada/scos.o differs
gcc/ada/sem_attr.o differs
gcc/ada/rident.o differs
gcc/ada/ali-util.o differs
gcc/ada/csets.o differs
gcc/ada/sem_ch5.o differs
gcc/ada/lib-xref.o differs
gcc/ada/par.o differs
gcc/ada/utils.o differs
gcc/ada/checks.o differs
gcc/ada/restrict.o differs
gcc/ada/sem_prag.o differs
gcc/ada/sem_intr.o differs
gcc/ada/aspects.o differs
gcc/ada/gnatbind.o differs
gcc/ada/cstand.o differs
gcc/ira.o differs
gcc/tree-into-ssa.o differs
gcc/tree-ssa.o differs
gcc/tree-predcom.o differs
gcc/reload.o differs
gcc/print-rtl.o differs
gcc/tree-ssa-math-opts.o differs
gcc/tree-ssa-tail-merge.o differs
gcc/real.o differs
gcc/tree-parloops.o differs
gcc/tree-vect-stmts.o differs
gcc/cp/repo.o differs
gcc/cp/tree.o differs
gcc/cp/typeck.o differs
gcc/gimplify.o differs
gcc/arm.o differs
gcc/tree-ssa-ter.o differs
gcc/regrename.o differs
gcc/tree-ssa-coalesce.o differs
gcc/tree-inline.o differs
gcc/c-family/c-format.o differs
gcc/c-family/c-common.o differs
gcc/ipa-split.o differs
gcc/stor-layout.o differs
libcpp/lex.o differs
libdecnumber/decNumber.o differs
libiberty/regex.o differs
libiberty/pic/regex.o differs
make[2]: *** [compare] Error 1
make[2]: Leaving directory `/mnt/scratch/objdir49'
make[1]: *** [stage3-bubble] Error 2
make[1]: Leaving directory `/mnt/scratch/objdir49'
make: *** [bootstrap] Error 2

The snapshot from two weeks ago, gcc-4.9-20131103, bootstrapped fine.  (I have
20131110 marked as failed too, but I didn't record why, sigh.)

Configured as:
/mnt/scratch/gcc-4.9-20131117/configure --prefix=/mnt/scratch/install49
--enable-bootstrap --enable-shared --enable-threads=posix
--enable-checking=release --with-system-zlib --enable-__cxa_atexit
--disable-libunwind-exceptions --enable-languages=c,c++,fortran,ada
--disable-dssi --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-1.5.0.0/jre
--enable-libgcj-multifile --disable-java-maintainer-mode
--with-ecj-jar=/usr/share/java/eclipse-ecj.jar --disable-libjava-multilib
--disable-sjlj-exceptions --with-arch=armv5te --with-tune=xscale
--build=armv5tel-unknown-linux-gnueabi --disable-plugin --disable-lto
--disable-libmudflap