http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51221
--- Comment #4 from Iain Sandoe <iains at gcc dot gnu.org> 2011-11-30 17:16:11 UTC --- (gdb) bt #0 extract_insn (insn=0x16263f0) at /GCC/gcc-4-6-branch/gcc/recog.c:2109 #1 0x005d4090 in instantiate_virtual_regs_in_insn (insn=0x16263f0) at /GCC/gcc-4-6-branch/gcc/function.c:1572 #2 0x005d5758 in instantiate_virtual_regs () at /GCC/gcc-4-6-branch/gcc/function.c:1928 #3 0x007c0938 in execute_one_pass (pass=0x1006d94) at /GCC/gcc-4-6-branch/gcc/passes.c:1556 #4 0x007c0ca8 in execute_pass_list (pass=0x1006d94) at /GCC/gcc-4-6-branch/gcc/passes.c:1611 #5 execute_pass_list (pass=0x10075d4) at /GCC/gcc-4-6-branch/gcc/passes.c:1613 #6 0x009c7e3c in tree_rest_of_compilation (fndecl=0x128e980) at /GCC/gcc-4-6-branch/gcc/tree-optimize.c:422 #7 0x00c75bc8 in cgraph_expand_function (node=0x12b8540) at /GCC/gcc-4-6-branch/gcc/cgraphunit.c:1576 #8 0x00c75ec0 in cgraph_expand_all_functions () at /GCC/gcc-4-6-branch/gcc/cgraphunit.c:1635 #9 0x00c76a60 in cgraph_optimize () at /GCC/gcc-4-6-branch/gcc/cgraphunit.c:1899 #10 0x00c74664 in cgraph_finalize_compilation_unit () at /GCC/gcc-4-6-branch/gcc/cgraphunit.c:1096 #11 0x000229b4 in c_write_global_declarations () at /GCC/gcc-4-6-branch/gcc/c-decl.c:9871 #12 0x0092be78 in compile_file () at /GCC/gcc-4-6-branch/gcc/toplev.c:591 #13 0x009301b0 in do_compile () at /GCC/gcc-4-6-branch/gcc/toplev.c:1900 #14 0x00930464 in toplev_main (argc=27, argv=0xbffff174) at /GCC/gcc-4-6-branch/gcc/toplev.c:1963 #15 0x000ee41c in main (argc=27, argv=0xbffff174) at /GCC/gcc-4-6-branch/gcc/main.c:36