[Bug bootstrap/50778] [4.7 Regression] Bootstrap failure on powerpc-apple-darwin9

["iains at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50778

--- Comment #4 from Iain Sandoe <iains at gcc dot gnu.org> 2011-10-19 12:22:04 UTC ---
(In reply to comment #3)
> Could I have ssh access to one of the boxes that fail?

unfortunately, I can't do that - company boxes here afflicted by company
policy;
 Jack Howarth seems to be able to - I think he might have a PPC box still.

Otherwise we can offer to try and answer specific questions;

I've got other fails in struc-layout etc. that are bus errors in libcpp:
e.g.
Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_PROTECTION_FAILURE at address: 0x00000000
_cpp_pop_context (pfile=0x41806600) at /GCC/gcc-live-trunk/libcpp/macro.c:2139
2139      pfile->context->next = NULL;
(gdb) bt
#0  _cpp_pop_context (pfile=0x41806600) at
/GCC/gcc-live-trunk/libcpp/macro.c:2139
#1  0x00937b44 in cpp_get_token_1 (pfile=0x14, location=0xbfffedac) at
/GCC/gcc-live-trunk/libcpp/macro.c:2328
#2  0x00937684 in enter_macro_context (pfile=0xbfffedac, node=0x4204e160,
result=0x41809a00, location=1242616) at /GCC/gcc-live-trunk/libcpp/macro.c:2074
#3  0x00937b44 in cpp_get_token_1 (pfile=0x41806600, location=0xbfffef08) at
/GCC/gcc-live-trunk/libcpp/macro.c:2328
#4  0x000ac398 in preprocess_file (pfile=0x41806600) at
/GCC/gcc-live-trunk/gcc/c-family/c-ppoutput.c:177
#5  0x000aa450 in c_common_init () at
/GCC/gcc-live-trunk/gcc/c-family/c-opts.c:1090
#6  0x0004cb98 in c_objc_common_init () at
/GCC/gcc-live-trunk/gcc/c-objc-common.c:64
#7  0x006594b0 in toplev_main (argc=25, argv=0x0) at
/GCC/gcc-live-trunk/gcc/toplev.c:1757
#8  0x00002464 in start ()
Current language:  auto; currently c++

(in case that's a hint).