diff options
| -rw-r--r-- | Cython/Utility/Coroutine.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/Cython/Utility/Coroutine.c b/Cython/Utility/Coroutine.c index 1332c9824..e530a078d 100644 --- a/Cython/Utility/Coroutine.c +++ b/Cython/Utility/Coroutine.c @@ -1501,6 +1501,22 @@ static PyObject *__Pyx_CoroutineAwait_no_new(PyTypeObject *type, PyObject *args, } #endif +// In earlier versions of Python an object with no __dict__ and not __slots__ is assumed +// to be pickleable by default. Coroutine-wrappers have significant state so shouldn't be. +// Therefore provide a default implementation. +// Something similar applies to heaptypes (i.e. with type_specs) with protocols 0 and 1 +// even in more recent versions. +// We are applying this to all Python versions (hence the commented out version guard) +// to make the behaviour explicit. +// #if PY_VERSION_HEX < 0x03060000 || CYTHON_USE_TYPE_SPECS +static PyObject *__Pyx_CoroutineAwait_reduce_ex(__pyx_CoroutineAwaitObject *self, PyObject *arg) { + CYTHON_UNUSED_VAR(arg); + PyErr_Format(PyExc_TypeError, "cannot pickle '%.200s' object", + Py_TYPE(self)->tp_name); + return NULL; +} +// #endif + static PyMethodDef __pyx_CoroutineAwait_methods[] = { {"send", (PyCFunction) __Pyx_CoroutineAwait_Send, METH_O, (char*) PyDoc_STR("send(arg) -> send 'arg' into coroutine,\nreturn next yielded value or raise StopIteration.")}, @@ -1508,6 +1524,11 @@ static PyMethodDef __pyx_CoroutineAwait_methods[] = { (char*) PyDoc_STR("throw(typ[,val[,tb]]) -> raise exception in coroutine,\nreturn next yielded value or raise StopIteration.")}, {"close", (PyCFunction) __Pyx_CoroutineAwait_Close, METH_NOARGS, (char*) PyDoc_STR("close() -> raise GeneratorExit inside coroutine.")}, +// only needed with type-specs or version<3.6, but included in all versions for clarity +// #if PY_VERSION_HEX < 0x03060000 || CYTHON_USE_TYPE_SPECS + {"__reduce_ex__", (PyCFunction) __Pyx_CoroutineAwait_reduce_ex, METH_O, 0}, + {"__reduce__", (PyCFunction) __Pyx_CoroutineAwait_reduce_ex, METH_NOARGS, 0}, +// #endif {0, 0, 0, 0} }; |