[Bug bootstrap/53847] New: bootstrap failure: Error: expecting string instruction after `rep'

["vincenzo.innocente at cern dot ch" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53847

             Bug #: 53847
           Summary: bootstrap failure: Error: expecting string instruction
                    after `rep'
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: blocker
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: vincenzo.innocente@cern.ch
            Target: x86_64-unknown-linux-gnu


revision 189240 fails to booststrap
(wrong assembler code emitted?)


cd /build/vin/gcc48-build/x86_64-unknown-linux-gnu/libgcc
[vocms123] /build/vin/gcc48-build/x86_64-unknown-linux-gnu/libgcc $
/build/vin/gcc48-build/./gcc/xgcc -B/build/vin/gcc48-build/./gcc/
-B/afs/cern.ch/user/i/innocent/w3/gcc47slc5/x86_64-unknown-linux-gnu/bin/
-B/afs/cern.ch/user/i/innocent/w3/gcc47slc5/x86_64-unknown-linux-gnu/lib/
-isystem
/afs/cern.ch/user/i/innocent/w3/gcc47slc5/x86_64-unknown-linux-gnu/include
-isystem
/afs/cern.ch/user/i/innocent/w3/gcc47slc5/x86_64-unknown-linux-gnu/sys-include 
  -g -O2 -O2  -g -O2 -DIN_GCC   -W -Wall -Wno-narrowing -Wwrite-strings
-Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition 
-isystem ./include   -fpic -g -DIN_LIBGCC2 -fbuilding-libgcc
-fno-stack-protector   -fpic -I. -I. -I../.././gcc -I../../../gcc-trunk/libgcc
-I../../../gcc-trunk/libgcc/. -I../../../gcc-trunk/libgcc/../gcc
-I../../../gcc-trunk/libgcc/../include
-I../../../gcc-trunk/libgcc/config/libbid -DENABLE_DECIMAL_BID_FORMAT
-DHAVE_CC_TLS  -DUSE_TLS -o _clear_cache.o -MT _clear_cache.o -MD -MP -MF
_clear_cache.dep -DL_clear_cache -c ../../../gcc-trunk/libgcc/libgcc2.c
-fvisibility=hidden -DHIDE_EXPORTS
/tmp/innocent/ccOTckUp.s: Assembler messages:
/tmp/innocent/ccOTckUp.s:14: Error: expecting string instruction after `rep'

[vocms123] /build/vin/gcc48-build/x86_64-unknown-linux-gnu/libgcc $ 
/build/vin/gcc48-build/./gcc/xgcc -v
Using built-in specs.
COLLECT_GCC=/build/vin/gcc48-build/./gcc/xgcc
Target: x86_64-unknown-linux-gnu
Configured with:
â.
(reconfigured) ../gcc-trunk/configure --disable-multilib --enable-gold=yes
--disable-nls --enable-lto
--with-mpc=/afs/cern.ch/cms/slc5_amd64_gcc470/external/gcc/4.7.0
--with-gmp=/afs/cern.ch/cms/slc5_amd64_gcc470/external/gcc/4.7.0
--with-mpfr=/afs/cern.ch/cms/slc5_amd64_gcc470/external/gcc/4.7.0
--prefix=/afs/cern.ch/user/i/innocent/w3/gcc47slc5
--with-build-time-tools=/build/ge/new-binutils/a/slc5_amd64_gcc470/external/gcc/4.7.0-cms/bin
--enable-languages=c,c++,fortran,lto --no-create --no-recursion
Thread model: posix
gcc version 4.8.0 20120703 (experimental) [trunk revision 189240] (GCC) 
[vocms123] /build/vin/gcc48-build/x86_64-unknown-linux-gnu/libgcc $ as -v
GNU assembler version 2.22 (x86_64-unknown-linux-gnu) using BFD version (GNU
Binutils) 2.22