(cherry picked from commit abb3b8a)

(cherry picked from commit abb3b8a)

…ies (GH-265) (GH-268)

(cherry picked from commit abb3b8a)
(cherry picked from commit 365cb5b)

…ies (GH-265) (GH-269)

(cherry picked from commit abb3b8a)
(cherry picked from commit 365cb5b)

The implementation was buggy. This affects only users of the C-API,
that call PyChannel_Send() and PyChannel_Send_nr() for calls from
outside of the interpreter (with no main-tasklet).

If called from outside of the interpreter the behavior was undefined.
(Calling a C-function with wrong number of arguments).

Avoid undefined behavior, if Stackless classes implement __reduce__()
and __reduce_ex__() using a single C-function.
__reduce_ex__ now checks the type of its argument.

Return type is 'int', not 'void'.

…itions

Most (getter)-functions, (setter)-functions and (PyCFunction)-functions
with flag METH_NOARGS lack an unused last argument, "void *" for
(getter) and (setter), "PyObject *" for (PyCFunction)-functions.
This commit adds these arguments.

…itions

Most (getter)-functions, (setter)-functions and (PyCFunction)-functions
with flag METH_NOARGS lack an unused last argument, "void *" for
(getter) and (setter), "PyObject *" for (PyCFunction)-functions.
This commit adds these arguments.

The implementation was buggy. This affects only users of the C-API,
that call PyChannel_Send() and PyChannel_Send_nr() for calls from
outside of the interpreter (with no main-tasklet).

If called from outside of the interpreter the behavior was undefined.
(Calling a C-function with wrong number of arguments).

Avoid undefined behavior, if Stackless classes implement __reduce__()
and __reduce_ex__() using a single C-function.
__reduce_ex__ now checks the type of its argument.

Return type is 'int', not 'void'.

…itions

Most (getter)-functions, (setter)-functions and (PyCFunction)-functions
with flag METH_NOARGS lack an unused last argument, "void *" for
(getter) and (setter), "PyObject *" for (PyCFunction)-functions.
This commit adds these arguments.

Fix invalid function cast warnings with gcc 8 for method conventions
different from METH_NOARGS, METH_O and METH_VARARGS excluding Argument
Clinic generated code.

… gcc 8

* fix PyChannel_Send_M

The implementation was buggy. This affects only users of the C-API,
that call PyChannel_Send() and PyChannel_Send_nr() for calls from
outside of the interpreter (with no main-tasklet).

* fix PyChannel_Receive_M and tasklet_new

If called from outside of the interpreter the behavior was undefined.
(Calling a C-function with wrong number of arguments).

* fix __reduce__ / __reduce_ex__

Avoid undefined behavior, if Stackless classes implement __reduce__()
and __reduce_ex__() using a single C-function.
__reduce_ex__ now checks the type of its argument.

* fix the signature of tp_clear functions

Return type is 'int', not 'void'.

* add missing arguments to C-function definitions

Most (getter)-functions, (setter)-functions and (PyCFunction)-functions
with flag METH_NOARGS lack an unused last argument, "void *" for
(getter) and (setter), "PyObject *" for (PyCFunction)-functions.
This commit adds these arguments.

* Fix invalid function cast warnings

Fix invalid function cast warnings with gcc 8 for method conventions
different from METH_NOARGS, METH_O and METH_VARARGS excluding Argument
Clinic generated code.