[Cython] segfault in 'async def' coroutines

[Yury Selivanov]

I've just discovered that same thing has to be fixed for
__name__.

On 2016-05-14 5:31 PM, Yury Selivanov wrote:
> Hi,
>
> Under some circumstances, in asyncio code that runs in uvloop [1],
> cython code segfaults in cython/Cython/Utility/Coroutine.c:
>
>
>   static PyObject *
>   __Pyx_Coroutine_get_qualname(__pyx_CoroutineObject *self)
>   {
>     Py_INCREF(self->gi_qualname);
>     return self->gi_qualname;
>   }
>
>
> "self->gi_qualname" can be NULL.  The correct code is probably:
>
>
>   __Pyx_Coroutine_get_qualname(__pyx_CoroutineObject *self)
>   {
>     if (self->gi_qualname == NULL) { return __pyx_empty_unicode; }
>     Py_INCREF(self->gi_qualname);
>     return self->gi_qualname;
>   }
>
>
> Thanks,
> Yury