[Bug c++/29076] New: g++.dg/eh/forced1.C when compiled at -m64 on Darwin PPC has bus error

[howarth at nitro dot med dot uc dot edu]

The testcase g++.dg/eh/forced1.C  when compiled at -m64 on Darwin PPC 
crashes with a bus error. The gdb run and backtrace are...

(gdb) r
Starting program: /Users/howarth/g++errors/a.out 
Reading symbols for shared libraries .+++ done

Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_PROTECTION_FAILURE at address: 0x0000000000000000
0x0000000000044220 in _Unwind_GetGR (context=0x0, index=13) at
../../gcc-4.2-20060913/gcc/unwind.inc:216
216     }
(gdb) bt
#0  0x0000000000044220 in _Unwind_GetGR (context=0x0, index=13) at
../../gcc-4.2-20060913/gcc/unwind.inc:216
#1  0x0000000000049b10 in _Unwind_fallback_frame_state_for
(context=0x7fffeffffe410, fs=0x7fffeffffd480) at
../../gcc-4.2-20060913/gcc/config/rs6000/darwin-fallback.c:337
#2  0x0000000000045238 in uw_frame_state_for (context=0x7fffeffffe410,
fs=0x7fffeffffd480) at ../../gcc-4.2-20060913/gcc/unwind.inc:216
#3  0x0000000000046db4 in _Unwind_ForcedUnwind_Phase2 (exc=0xc004e0,
context=0x7fffeffffe410) at ../../gcc-4.2-20060913/gcc/unwind.inc:216
#4  0x000000000004716c in _Unwind_Resume (exc=0xc004e0) at
../../gcc-4.2-20060913/gcc/unwind.inc:216
#5  0x0000000000002d20 in doit () at forced1.C:81
#6  0x0000000000002d30 in main () at forced1.C:81
Current language:  auto; currently c

g++-4 -v
Using built-in specs.
Target: powerpc-apple-darwin8
Configured with: ../gcc-4.2-20060913/configure --prefix=/sw
--prefix=/sw/lib/gcc4 --enable-languages=c,c++,fortran
--infodir=/sw/lib/gcc4/share/info --with-gmp=/sw --with-included-gettext
--host=powerpc-apple-darwin8 --with-libiconv-prefix=/sw
Thread model: posix
gcc version 4.2.0 20060913 (experimental)


-- 
           Summary: g++.dg/eh/forced1.C when compiled at -m64 on Darwin PPC
                    has bus error
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: howarth at nitro dot med dot uc dot edu
 GCC build triplet: powerpc-apple-darwin8
  GCC host triplet: powerpc-apple-darwin8
GCC target triplet: powerpc-apple-darwin8


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29076