hello, I'm not sure of the proper way to report all relevant details such 
as architecture, etc, but here is an initial cut at an issue report. I am 
using the nagare web framework which uses Stackless Python. It dumps core 
and here is the backtrace:

(gdb) run ./nagare-admin serve counter
Starting program: /home/metaperl/install/nagare-home/bin/python ./nagare-
admin serve counter
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
Application 'app counter' registered as '/counter'
[New Thread 0xb6351b40 (LWP 29243)]
[New Thread 0xb59ffb40 (LWP 29244)]
[New Thread 0xb4fffb40 (LWP 29245)]
[New Thread 0xb47feb40 (LWP 29246)]
[New Thread 0xb3ffdb40 (LWP 29247)]
[New Thread 0xb37fcb40 (LWP 29248)]
[New Thread 0xb2ffbb40 (LWP 29249)]
[New Thread 0xb27fab40 (LWP 29250)]
[New Thread 0xb1ff9b40 (LWP 29251)]
[New Thread 0xb17f8b40 (LWP 29252)]
04/28/15 03:13:56 - serving on http://127.0.0.1:8080

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0xb4fffb40 (LWP 29245)]
0x081bcaa3 in slp_transfer (cstprev=0x83e1a24, cst=<optimized out>, 
prev=0x0)
    at ./Stackless/core/slp_transfer.c:157
157                 ts->st.serial_last_jump = _cst->serial;
(gdb) bt
#0  0x081bcaa3 in slp_transfer (cstprev=0x83e1a24, cst=<optimized out>, 
    prev=0x0) at ./Stackless/core/slp_transfer.c:157
#1  0x0810b3e4 in make_initial_stub () at 
Stackless/core/stacklesseval.c:250
#2  0x0810b4cf in slp_eval_frame (f=0xb636649c)
    at Stackless/core/stacklesseval.c:316
#3  0x0810b46a in climb_stack_and_eval_frame (f=0xb636649c)
    at Stackless/core/stacklesseval.c:285
#4  0x0810b4c8 in slp_eval_frame (f=0xb636649c)
    at Stackless/core/stacklesseval.c:314
#5  0x08105ee6 in PyEval_EvalCodeEx (co=0xb73e73e8, globals=0xb74398f4, 
    locals=0x0, args=0xb63a45f8, argcount=1, kws=0x0, kwcount=0, defs=0x0, 
    defcount=0, closure=0x0) at Python/ceval.c:3709
#6  0x08194e2e in function_call (func=0xb73f3854, arg=0xb63a45e4, kw=0x0)
    at Objects/funcobject.c:537
#7  0x08065900 in PyObject_Call (func=0xb73f3854, arg=0xb63a45e4, kw=0x0)
    at Objects/abstract.c:2539
#8  0x0806eb5e in instancemethod_call (func=0xb73f3854, arg=0xb63a45e4, 
    kw=0x0) at Objects/classobject.c:2609
#9  0x08065900 in PyObject_Call (func=0xb648f274, arg=0xb7d66034, kw=0x0)
    at Objects/abstract.c:2539
#10 0x08107a91 in PyEval_CallObjectWithKeywords (func=0xb648f274, 
    arg=0xb7d66034, kw=0x0) at Python/ceval.c:4364
#11 0x0815ca97 in t_bootstrap (boot_raw=0xb64f9398)
    at ./Modules/threadmodule.c:614
#12 0xb7fabf70 in start_thread (arg=0xb4fffb40) at pthread_create.c:312
#13 0xb7e92bee in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:129
(gdb) 


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