Platform: HP-UX B.11.22 U ia64
Python: 2.7 trunk

GDB output when running built `python` binary:

Program received signal SIGSEGV, Segmentation fault (si_code: 1).
0x40000000002a2510:1 in gc_list_merge (from=0x148, to=0x148)
    at Modules/gcmodule.c:240
240         if (!gc_list_is_empty(from)) {

and the stack trace:

(gdb) bt
#0  0x40000000002a2510:1 in gc_list_merge (from=0x148, to=0x148)
    at Modules/gcmodule.c:240
#1  0x40000000002a4720:0 in collect (generation=0) at Modules/gcmodule.c:975
#2  0x40000000002a6620:0 in _PyObject_GC_Malloc (basicsize=65598)
    at Modules/gcmodule.c:996
#3  0x400000000018e540:0 in PyType_GenericAlloc (type=0x1003e, nitems=65598)
    at Objects/typeobject.c:743
#4  0x40000000003107d0:0 in PyDescr_NewWrapper (type=0x0, base=0x1003e, 
    wrapped=0x1003e) at Objects/descrobject.c:641
#5  0x40000000001a4570:0 in add_operators (type=0x0)
    at Objects/typeobject.c:6388
#6  0x4000000000193670:0 in PyType_Ready (type=0x1003e)
    at Objects/typeobject.c:4003
#7  0x40000000001485b0:0 in _Py_ReadyTypes () at Objects/object.c:2092
#8  0x4000000000270980:0 in Py_InitializeEx (install_sigs=0)
    at Python/pythonrun.c:176
#9  0x40000000002720e0:0 in Py_Initialize () at Python/pythonrun.c:370
#10 0x400000000009da70:0 in Py_Main (argc=0, argv=0x0) at Modules/main.c:507
#11 0x400000000009c770:0 in main (argc=0, argv=0x0) at ./Modules/python.c:23