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[Bug bootstrap/43287] New: [4.5 Regression] Bootstrap fails at stage 1 on powerpc-apple-darwin9


At revision 157266 bootstrap fails at stage 1 on powerpc-apple-darwin9:

/opt/gcc/darwin_buildw/./gcc/xgcc -B/opt/gcc/darwin_buildw/./gcc/
-B/opt/gcc/gcc4.5w/powerpc-apple-darwin9/bin/
-B/opt/gcc/gcc4.5w/powerpc-apple-darwin9/lib/ -isystem
/opt/gcc/gcc4.5w/powerpc-apple-darwin9/include -isystem
/opt/gcc/gcc4.5w/powerpc-apple-darwin9/sys-include    -g -O2 -m64 -O2  -g -O2
-DIN_GCC   -W -Wall -Wwrite-strings -Wcast-qual -Wstrict-prototypes
-Wmissing-prototypes -Wold-style-definition  -isystem ./include 
-Wa,-force_cpusubtype_ALL -pipe -mmacosx-version-min=10.4 -g
-DHAVE_GTHR_DEFAULT -DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED   -I. -I.
-I../../.././gcc -I../../../../gcc-4.5-work/libgcc
-I../../../../gcc-4.5-work/libgcc/. -I../../../../gcc-4.5-work/libgcc/../gcc
-I../../../../gcc-4.5-work/libgcc/../include  -DHAVE_CC_TLS -o _floatdisf.o -MT
_floatdisf.o -MD -MP -MF _floatdisf.dep -DL_floatdisf -c
../../../../gcc-4.5-work/libgcc/../gcc/libgcc2.c \
          -fvisibility=hidden -DHIDE_EXPORTS
../../../../gcc-4.5-work/libgcc/../gcc/libgcc2.c:1526:1: internal compiler
error: Bus error

(see http://gcc.gnu.org/ml/gcc-regression/2010-03/msg00024.html).

Note that I get the bus error with '-O2 -m64', but not with '-O2' nor with
'-m64 -O1'.
I'll attach libgcc2.i.


-- 
           Summary: [4.5 Regression] Bootstrap fails at stage 1 on powerpc-
                    apple-darwin9
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: blocker
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: dominiq at lps dot ens dot fr
 GCC build triplet: powerpc-apple-darwin9
  GCC host triplet: powerpc-apple-darwin9
GCC target triplet: powerpc-apple-darwin9


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43287


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