$> gdb slpy 
GNU gdb 6.6-debian
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This GDB was configured as "x86_64-linux-gnu"...
Using host libthread_db library "/lib/libthread_db.so.1".
(gdb) run
Starting program: /home/r64y/e1/path64/bin/slpy 
[Thread debugging using libthread_db enabled]
[New Thread 47521844852464 (LWP 32241)]
Python 2.6a0 Stackless 3.1b3 060516 (trunk:54612, Mar 30 2007, 13:27:25) 
[GCC 4.1.2 (Ubuntu 4.1.2-0ubuntu4)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import sip
>>> help(sip)

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 47521844852464 (LWP 32241)]
0x00002b388a80bf30 in strchr () from /lib/libc.so.6
(gdb) thread apply all full bt

Thread 1 (Thread 47521844852464 (LWP 32241)):
Undefined command: "full".  Try "help".
(gdb) thread apply all bt full

Thread 1 (Thread 47521844852464 (LWP 32241)):
#0  0x00002b388a80bf30 in strchr () from /lib/libc.so.6
No symbol table info available.
#1  0x00002b388a80ca2e in strrchr () from /lib/libc.so.6
No symbol table info available.
#2  0x0000000000455041 in type_module (type=<value optimized out>, context=<value optimized out>)
    at Objects/typeobject.c:99
        mod = <value optimized out>
#3  0x000000000047cb0a in builtin_hasattr (self=<value optimized out>, args=<value optimized out>)
    at Python/bltinmodule.c:802
        v = (PyObject *) 0x2b388b3ab800
        name = (PyObject *) 0x0
#4  0x0000000000486aad in PyEval_EvalFrame_value (f=0x861350, throwflag=<value optimized out>, 
    retval=<value optimized out>) at Python/ceval.c:3883
        callargs = (PyObject *) 0x2b388b90f368
        stack_pointer = <value optimized out>
        next_instr = (unsigned char *) 0x850062 "o\024"
        opcode = <value optimized out>
        oparg = <value optimized out>
        why = WHY_RETURN
        err = 0
        x = <value optimized out>
        v = <value optimized out>
        w = <value optimized out>
        u = <value optimized out>
        t = <value optimized out>
        stream = <value optimized out>
        fastlocals = (PyObject **) 0x8614d0
        freevars = (PyObject **) 0x861520
        tstate = (PyThreadState *) 0x786090
        co = (PyCodeObject *) 0x2b388b8df8a0
        instr_ub = -1
---Type <return> to continue, or q <return> to quit---
        instr_lb = 0
        instr_prev = -1
        first_instr = <value optimized out>
        names = (PyObject *) 0x2b3889d1de60
        consts = (PyObject *) 0x2b388b8e3130
#5  0x00000000004878af in PyEval_EvalFrameEx_slp (f=0x0, throwflag=0, retval=0x742a40) at Python/ceval.c:782
        tstate = (PyThreadState *) 0x786090
#6  0x0000000000484320 in PyEval_EvalFrame_value (f=0x83b110, throwflag=<value optimized out>, retval=0x2e)
    at Python/ceval.c:2849
        sp = (PyObject **) 0x83b348
        stack_pointer = (PyObject **) 0x1
        next_instr = <value optimized out>
        opcode = 131
        oparg = 1
        why = WHY_EXCEPTION
        err = 0
        x = (PyObject *) 0x751610
        v = (PyObject *) 0x83
        w = <value optimized out>
        u = (PyObject *) 0x838d7f
        t = <value optimized out>
        stream = (PyObject *) 0x2b388a80798d
        fastlocals = (PyObject **) 0x83b290
        freevars = (PyObject **) 0x83b340
        tstate = (PyThreadState *) 0x786090
        co = (PyCodeObject *) 0x2b3889e02af8
        instr_ub = -1
        instr_lb = 0
        instr_prev = -1
        first_instr = <value optimized out>
        names = (PyObject *) 0x83c1c0
        consts = (PyObject *) 0x83c080
#7  0x00000000004878af in PyEval_EvalFrameEx_slp (f=0x0, throwflag=0, retval=0x742a40) at Python/ceval.c:782
---Type <return> to continue, or q <return> to quit---
        tstate = (PyThreadState *) 0x786090
#8  0x0000000000484320 in PyEval_EvalFrame_value (f=0x8b81c0, throwflag=<value optimized out>, retval=0x2e)
    at Python/ceval.c:2849
        sp = (PyObject **) 0x8b8360
        stack_pointer = (PyObject **) 0x2
        next_instr = <value optimized out>
        opcode = 7673360
        oparg = 0
        why = WHY_RETURN
        err = 0
        x = (PyObject *) 0x751610
        v = (PyObject *) 0x751610
        w = <value optimized out>
        u = (PyObject *) 0x2b3889df53f0
        t = <value optimized out>
        stream = (PyObject *) 0x2b3889e101f0
        fastlocals = (PyObject **) 0x8b8340
        freevars = (PyObject **) 0x8b8360
        tstate = (PyThreadState *) 0x786090
        co = (PyCodeObject *) 0x2b3889df6468
        instr_ub = -1
        instr_lb = 0
        instr_prev = -1
        first_instr = <value optimized out>
        names = (PyObject *) 0x2b3889d38940
        consts = (PyObject *) 0x2b3889decc10
#9  0x00000000004878af in PyEval_EvalFrameEx_slp (f=0x0, throwflag=0, retval=0x742a40) at Python/ceval.c:782
        tstate = (PyThreadState *) 0x786090
#10 0x0000000000484320 in PyEval_EvalFrame_value (f=0x868040, throwflag=<value optimized out>, retval=0x2e)
    at Python/ceval.c:2849
        sp = (PyObject **) 0x868210
        stack_pointer = (PyObject **) 0x3
        next_instr = <value optimized out>
---Type <return> to continue, or q <return> to quit---
        opcode = -1953445912
        oparg = 2
        why = 7633280
        err = 0
        x = (PyObject *) 0x751610
        v = (PyObject *) 0x2b388b90c7e8
        w = <value optimized out>
        u = (PyObject *) 0x2b3889d12850
        t = <value optimized out>
        stream = (PyObject *) 0x2b388aae2960
        fastlocals = (PyObject **) 0x8681c0
        freevars = (PyObject **) 0x868200
        tstate = (PyThreadState *) 0x786090
        co = (PyCodeObject *) 0x2b3889e0b198
        instr_ub = -1
        instr_lb = 0
        instr_prev = -1
        first_instr = <value optimized out>
        names = (PyObject *) 0x2b3889d0b600
        consts = (PyObject *) 0x2b3889e07280
#11 0x00000000004878af in PyEval_EvalFrameEx_slp (f=0x0, throwflag=0, retval=0x742a40) at Python/ceval.c:782
        tstate = (PyThreadState *) 0x786090
#12 0x0000000000484320 in PyEval_EvalFrame_value (f=0x8b93f0, throwflag=<value optimized out>, retval=0x2e)
    at Python/ceval.c:2849
        sp = (PyObject **) 0x8b9580
        stack_pointer = (PyObject **) 0x2
        next_instr = <value optimized out>
        opcode = 131
        oparg = 2
        why = 0
        err = 0
        x = (PyObject *) 0x751610
        v = (PyObject *) 0x83
---Type <return> to continue, or q <return> to quit---
        w = <value optimized out>
        u = (PyObject *) 0x2b3889e0b6c0
        t = <value optimized out>
        stream = (PyObject *) 0x7f4ee8
        fastlocals = (PyObject **) 0x8b9570
        freevars = (PyObject **) 0x8b9580
        tstate = (PyThreadState *) 0x786090
        co = (PyCodeObject *) 0x2b3889e0b6c0
        instr_ub = -1
        instr_lb = 0
        instr_prev = -1
        first_instr = <value optimized out>
        names = (PyObject *) 0x2b3889d096e0
        consts = (PyObject *) 0x2b3889d0a9e0
#13 0x00000000004878af in PyEval_EvalFrameEx_slp (f=0x0, throwflag=0, retval=0x742a40) at Python/ceval.c:782
        tstate = (PyThreadState *) 0x786090
#14 0x0000000000484320 in PyEval_EvalFrame_value (f=0x8b9dc0, throwflag=<value optimized out>, retval=0x2e)
    at Python/ceval.c:2849
        sp = (PyObject **) 0x8b9f50
        stack_pointer = (PyObject **) 0x2
        next_instr = <value optimized out>
        opcode = 7889040
        oparg = 1
        why = 7570752
        err = 0
        x = (PyObject *) 0x751610
        v = (PyObject *) 0x786090
        w = <value optimized out>
        u = (PyObject *) 0x2b3889d73d10
        t = <value optimized out>
        stream = (PyObject *) 0xff0a000000000000
        fastlocals = (PyObject **) 0x8b9f40
        freevars = (PyObject **) 0x8b9f50
---Type <return> to continue, or q <return> to quit---
        tstate = (PyThreadState *) 0x786090
        co = (PyCodeObject *) 0x2b3889e0b468
        instr_ub = -1
        instr_lb = 0
        instr_prev = -1
        first_instr = <value optimized out>
        names = (PyObject *) 0x2b3889df3d50
        consts = (PyObject *) 0x2b3889e0c3b0
#15 0x00000000004878af in PyEval_EvalFrameEx_slp (f=0x0, throwflag=0, retval=0x742a40) at Python/ceval.c:782
        tstate = (PyThreadState *) 0x786090
#16 0x0000000000487b40 in slp_frame_dispatch (f=0x0, stopframe=0x820330, exc=46, retval=0x742a40)
    at Stackless/core/stacklesseval.c:644
        ts = (PyThreadState *) 0x786090
#17 0x00000000004db63d in function_call (func=0x87b230, arg=0x2b3889d73cf8, kw=0x819850)
    at Objects/funcobject.c:520
        pos = 9
        i = 0
        stackless = 0
        result = <value optimized out>
        argdefs = <value optimized out>
        d = (PyObject **) 0x877728
        k = (PyObject **) 0x85db20
        nd = 1
#18 0x00000000004194c8 in PyObject_Call (func=0x0, arg=0x2e, kw=0x2e) at Objects/abstract.c:1861
        result = <value optimized out>
        stackless = 3
        call = (ternaryfunc) 0xfefefefefefefeff
#19 0x000000000041fcdc in instancemethod_call (func=<value optimized out>, arg=0x2b3889d73cf8, kw=0x819850)
    at Objects/classobject.c:2502
        clsbuf = "�\037P\000\000\000\000\000�\004\202\000\000\000\000\000\200W�\2118+\000\000�W�\2118+\000\000xt� �\177\000\000�\020B\000\000\000\000\000�s� �\177\000\000\000\000\000\000\000\000\000\000\002\000\000\000\000\200\000\0000\003\202\000\000\000\000\000�\004\202\000\000\000\000\000\220`x\000\000\000\000\000�t� �\177\000\000A?D", '\0' <repeats 13 times>, "\002\000\000\000\000\000\000\000\a\000\000\000\000\000\000\0008�!Br��v\20---Type <return> to continue, or q <return> to quit---
0W�\2118+\000\000p�\212\000\000\000\000\000\200W�\2118+\000\000\220��\2118+\000\000w��\2118+\000\0000�\207\000\000\000\000\0000�\207\000\000\000\000\000;\fB"...
        instbuf = "�\037P\000>\000\000\000�\037P\000\000\000\000\000\230s� �\177\000\000\0208J\000\000\000\000\000\230s� �\177\000\000�Rz\000\000\000\000\000\177\000\000\000\000\000\000\000`)�\2128+\000\000�\001\000\000\000\000\000\000\b\000\000\000\000\000\000\000p{�\2118+\000\000`\v}", '\0' <repeats 13 times>, "\215y\200\2128+\000\000\000\000\000\000\000\000\000\000��v\000\000\000\000\000\b\000\000\000\000\000\000\000\031�K", '\0' <repeats 13 times>, "\001\000\000\000\000\000\000\000`lt\000\000\000\000\000\001\000\000\000\000\000\000\000\037\000\000\000\000\000\000\0008�!Br��v\200W�\2118+\000\000\020�\205\000\000\000"...
        ok = 0
        stackless = 0
        self = (PyObject *) 0x2b388b90cd40
        klass = (PyObject *) 0x1
        result = <value optimized out>
#20 0x00000000004194c8 in PyObject_Call (func=0x0, arg=0x2e, kw=0x2e) at Objects/abstract.c:1861
        result = <value optimized out>
        stackless = 3
        call = (ternaryfunc) 0xfefefefefefefeff
#21 0x000000000042022f in instance_call (func=0x2b388b90cd40, arg=0x2b3889dec690, kw=0x819850)
    at Objects/classobject.c:2054
        stackless = 0
        res = (PyObject *) 0x2b3889d2f777
        call = (PyObject *) 0x2b3889e24dc0
#22 0x00000000004194c8 in PyObject_Call (func=0x0, arg=0x2e, kw=0x2e) at Objects/abstract.c:1861
        result = <value optimized out>
        stackless = 3
        call = (ternaryfunc) 0xfefefefefefefeff
#23 0x000000000048468f in PyEval_EvalFrame_value (f=0x820330, throwflag=<value optimized out>, 
    retval=<value optimized out>) at Python/ceval.c:4180
        sp = (PyObject **) 0x8204d8
        stack_pointer = <value optimized out>
        next_instr = (unsigned char *) 0x2b3889d2f777 "S"
        opcode = <value optimized out>
        oparg = 0
---Type <return> to continue, or q <return> to quit---
        why = WHY_RETURN
        err = 0
        x = (PyObject *) 0x819850
        v = <value optimized out>
        w = <value optimized out>
        u = <value optimized out>
        t = <value optimized out>
        stream = (PyObject *) 0x4f7900
        fastlocals = (PyObject **) 0x8204b0
        freevars = (PyObject **) 0x8204d0
        tstate = (PyThreadState *) 0x786090
        co = (PyCodeObject *) 0x2b3889d37b70
        instr_ub = -1
        instr_lb = 0
        instr_prev = -1
        first_instr = <value optimized out>
        names = (PyObject *) 0x2b3889d2f7e8
        consts = (PyObject *) 0x2b3889d2f7a0
#24 0x00000000004878af in PyEval_EvalFrameEx_slp (f=0x0, throwflag=0, retval=0x742a40) at Python/ceval.c:782
        tstate = (PyThreadState *) 0x786090
#25 0x0000000000484320 in PyEval_EvalFrame_value (f=0x820170, throwflag=<value optimized out>, retval=0x2e)
    at Python/ceval.c:2849
        sp = (PyObject **) 0x8202f0
        stack_pointer = (PyObject **) 0x0
        next_instr = <value optimized out>
        opcode = -1981888880
        oparg = 1
        why = WHY_RETURN
        err = 0
        x = (PyObject *) 0x751610
        v = (PyObject *) 0x2b3889dec690
        w = <value optimized out>
        u = (PyObject *) 0x78d040
---Type <return> to continue, or q <return> to quit---
        t = <value optimized out>
        stream = (PyObject *) 0x0
        fastlocals = (PyObject **) 0x8202f0
        freevars = (PyObject **) 0x8202f0
        tstate = (PyThreadState *) 0x786090
        co = (PyCodeObject *) 0x2b3889d6a6c0
        instr_ub = -1
        instr_lb = 0
        instr_prev = -1
        first_instr = <value optimized out>
        names = (PyObject *) 0x2b3889df21b8
        consts = (PyObject *) 0x2b3889d36ed0
#26 0x00000000004878af in PyEval_EvalFrameEx_slp (f=0x0, throwflag=0, retval=0x742a40) at Python/ceval.c:782
        tstate = (PyThreadState *) 0x786090
#27 0x00000000004879e0 in slp_frame_dispatch_top (retval=0x0) at Stackless/core/stacklesseval.c:671
        ts = (PyThreadState *) 0x786090
        f = (PyFrameObject *) 0x3
#28 0x000000000048a668 in slp_run_tasklet () at Stackless/module/scheduling.c:1155
        ts = (PyThreadState *) 0x786090
        retval = (PyObject *) 0x742a40
#29 0x000000000048878e in slp_eval_frame (f=0x820170) at Stackless/core/stacklesseval.c:281
        ts = (PyThreadState *) 0x786090
        fprev = (PyFrameObject *) 0x0
#30 0x0000000000488826 in climb_stack_and_eval_frame (f=0x0) at Stackless/core/stacklesseval.c:248
        probe = 47521830429824
#31 0x000000000048879b in slp_eval_frame (f=0x820170) at Stackless/core/stacklesseval.c:276
        ts = (PyThreadState *) 0x786090
        fprev = (PyFrameObject *) 0x0
#32 0x000000000047f4b2 in PyEval_EvalCode (co=0x0, globals=0x2e, locals=0x2e) at Python/ceval.c:496
No locals.
#33 0x00000000004b351b in PyRun_InteractiveOneFlags (fp=0x2b388aae1680, filename=0x4f2a71 "<stdin>", 
    flags=0x7fff20dd3250) at Python/pythonrun.c:1302
        m = <value optimized out>
---Type <return> to continue, or q <return> to quit---
        d = (PyObject *) 0x7b2340
        v = <value optimized out>
        w = <value optimized out>
        mod = (mod_ty) 0x817808
        arena = (PyArena *) 0x7d1d10
        ps1 = 0x2b3889df0264 ">>> "
        ps2 = <value optimized out>
        errcode = 0
#34 0x00000000004b3734 in PyRun_InteractiveLoopFlags (fp=0x2b388aae1680, filename=0x4f2a71 "<stdin>", 
    flags=0x7fff20dd3250) at Python/pythonrun.c:731
        v = (PyObject *) 0x2b3889df0360
        ret = <value optimized out>
        local_flags = {cf_flags = 65302}
#35 0x00000000004b383a in PyRun_AnyFileExFlags (fp=0x2b388aae1680, filename=0x4f2a71 "<stdin>", closeit=0, 
    flags=0x7fff20dd3250) at Python/pythonrun.c:700
        err = <value optimized out>
#36 0x0000000000416120 in Py_Main (argc=<value optimized out>, argv=0x0) at Modules/main.c:497
        v = <value optimized out>
        c = <value optimized out>
        sts = 0
        command = 0x0
        filename = 0x2e <Address 0x2e out of bounds>
        module = 0x0
        fp = (FILE *) 0x2b388aae1680
        p = <value optimized out>
        inspect = 0
        unbuffered = <value optimized out>
        skipfirstline = 0
        stdin_is_interactive = 1
        help = <value optimized out>
        version = <value optimized out>
        saw_inspect_flag = 0
        saw_unbuffered_flag = 0
---Type <return> to continue, or q <return> to quit---
        cf = {cf_flags = 0}
#37 0x00002b388a7b38e4 in __libc_start_main () from /lib/libc.so.6
No symbol table info available.
#38 0x00000000004156f9 in _start ()
No symbol table info available.
(gdb) quit