[Bug bootstrap/50621] New: [4.7 Regression] Bootstrap failure

["kirill.yukhin at intel dot com" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50621

             Bug #: 50621
           Summary: [4.7 Regression] Bootstrap failure
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: kirill.yukhin@intel.com


Hi, rev 179554 fails to bootstrap
At least on x86-64-generic, and x86-64-corei7-avx

Here is a log

\
gcc -g -O2 -DIN_GCC   -W -Wall -Wwrite-strings -Wcast-qual -Wstrict-prototypes
-Wmissing-prototypes -Wold-style-definition  -isystem ./include  -fPIC -g
-DHAVE_GTHR_DEFAULT -DIN_LIBGCC2 -fb\
uilding-libgcc -fno-stack-protector   -I. -I. -I../../.././gcc
-I../../../../src-trunk/libgcc -I../../../../src-trunk/libgcc/.
-I../../../../src-trunk/libgcc/../gcc -I../../../../src-trunk/\
libgcc/../include -I../../../../src-trunk/libgcc/config/libbid
-DENABLE_DECIMAL_BID_FORMAT -DHAVE_CC_TLS  -DUSE_TLS -o _gcov_merge_ior.o -MT
_gcov_merge_ior.o -MD -MP -MF _gcov_merge_ior.de\
p -DL_gcov_merge_ior -c ../../../../src-trunk/libgcc/libgcov.c
/nightly/gcc.svn/test-intel64corei7avx/gcc-build-trunk/bld/./gcc/xgcc
-B/nightly/gcc.svn/test-intel64corei7avx/gcc-build-trunk/bld/./gcc/
-B/usr/local/x86_64-unknown-linux-gnu/bin/ -B/usr/l\
ocal/x86_64-unknown-linux-gnu/lib/ -isystem
/usr/local/x86_64-unknown-linux-gnu/include -isystem
/usr/local/x86_64-unknown-linux-gnu/sys-include    -g -O2 -m32 -O2  -I. -I.
-I../../src-trun\
k/gcc -I../../src-trunk/gcc/. -I../../src-trunk/gcc/../include
-I../../src-trunk/gcc/../libdecnumber -I../../src-trunk/gcc/../libdecnumber/bid
-I../libdecnumber -I../../src-trunk/gcc/../lib\
gcc -g -O2 -DIN_GCC   -W -Wall -Wwrite-strings -Wcast-qual -Wstrict-prototypes
-Wmissing-prototypes -Wold-style-definition  -isystem ./include  -fPIC -g
-DHAVE_GTHR_DEFAULT -DIN_LIBGCC2 -fb\
uilding-libgcc -fno-stack-protector   -I. -I. -I../../.././gcc
-I../../../../src-trunk/libgcc -I../../../../src-trunk/libgcc/.
-I../../../../src-trunk/libgcc/../gcc -I../../../../src-trunk/\
libgcc/../include -I../../../../src-trunk/libgcc/config/libbid
-DENABLE_DECIMAL_BID_FORMAT -DHAVE_CC_TLS  -DUSE_TLS -o unwind-dw2.o -MT
unwind-dw2.o -MD -MP -MF unwind-dw2.dep -fexceptions \
-c ../../../../src-trunk/libgcc/unwind-dw2.c -fvisibility=hidden -DHIDE_EXPORTS
../../../src-trunk/libgcc/config/libbid/bid64_noncomp.c: In function
'__bid64_totalOrderMag':
../../../src-trunk/libgcc/config/libbid/bid64_noncomp.c:938:1: internal
compiler error: in maybe_record_trace_start, at dwarf2cfi.c:2243
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
make[6]: *** [bid64_noncomp.o] Error 1