diff -r 2e23f7b9515c Include/abstract.h
--- a/Include/abstract.h	Mon Aug 22 14:29:54 2016 +0200
+++ b/Include/abstract.h	Mon Aug 22 15:32:49 2016 +0200
@@ -279,9 +279,18 @@ xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
 
         Return the result on success. Raise an exception on return NULL on
         error. */
-     PyAPI_FUNC(PyObject *) _PyObject_FastCall(PyObject *func,
-                                               PyObject **args, int nargs,
-                                               PyObject *kwargs);
+     PyAPI_FUNC(PyObject *) _PyObject_FastCallDict(PyObject *func,
+                                                   PyObject **args, int nargs,
+                                                   PyObject *kwargs);
+
+#define _PyObject_FastCall(func, args, nargs) \
+    _PyObject_FastCallDict((func), (args), (nargs), NULL)
+
+#define _PyObject_CallNoArg(func) \
+    _PyObject_FastCall((func), NULL, 0)
+
+#define _PyObject_CallArg1(func, arg) \
+    _PyObject_FastCall((func), &(arg), 1)
 
      PyAPI_FUNC(PyObject *) _Py_CheckFunctionResult(PyObject *func,
                                                     PyObject *result,
@@ -291,7 +300,7 @@ xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
        /*
      Call a callable Python object, callable_object, with
      arguments and keywords arguments.  The 'args' argument can not be
-     NULL, but the 'kw' argument can be NULL.
+     NULL.
        */
 
      PyAPI_FUNC(PyObject *) PyObject_CallObject(PyObject *callable_object,
diff -r 2e23f7b9515c Modules/_elementtree.c
--- a/Modules/_elementtree.c	Mon Aug 22 14:29:54 2016 +0200
+++ b/Modules/_elementtree.c	Mon Aug 22 15:32:49 2016 +0200
@@ -858,7 +858,7 @@ deepcopy(PyObject *object, PyObject *mem
 
     stack[0] = object;
     stack[1] = memo;
-    return _PyObject_FastCall(st->deepcopy_obj, stack, 2, NULL);
+    return _PyObject_FastCall(st->deepcopy_obj, stack, 2);
 }
 
 
diff -r 2e23f7b9515c Modules/_functoolsmodule.c
--- a/Modules/_functoolsmodule.c	Mon Aug 22 14:29:54 2016 +0200
+++ b/Modules/_functoolsmodule.c	Mon Aug 22 15:32:49 2016 +0200
@@ -492,7 +492,7 @@ keyobject_richcompare(PyObject *ko, PyOb
      */
     stack[0] = x;
     stack[1] = y;
-    res = _PyObject_FastCall(compare, stack, 2, NULL);
+    res = _PyObject_FastCall(compare, stack, 2);
     if (res == NULL) {
         return NULL;
     }
diff -r 2e23f7b9515c Modules/_pickle.c
--- a/Modules/_pickle.c	Mon Aug 22 14:29:54 2016 +0200
+++ b/Modules/_pickle.c	Mon Aug 22 15:32:49 2016 +0200
@@ -357,7 +357,7 @@ static PyObject *
        significantly reduced the number of function calls we do. Thus, the
        benefits became marginal at best. */
 
-    result = _PyObject_FastCall(func, &obj, 1, NULL);
+    result = _PyObject_CallArg1(func, obj);
     Py_DECREF(obj);
     return result;
 }
@@ -1151,7 +1151,7 @@ static Py_ssize_t
         return -1;
 
     if (n == READ_WHOLE_LINE) {
-        data = _PyObject_FastCall(self->readline, NULL, 0, NULL);
+        data = _PyObject_CallNoArg(self->readline);
     }
     else {
         PyObject *len;
@@ -3948,7 +3948,7 @@ save(PicklerObject *self, PyObject *obj,
             /* Check for a __reduce__ method. */
             reduce_func = _PyObject_GetAttrId(obj, &PyId___reduce__);
             if (reduce_func != NULL) {
-                reduce_value = _PyObject_FastCall(reduce_func, NULL, 0, NULL);
+                reduce_value = _PyObject_CallNoArg(reduce_func);
             }
             else {
                 PyErr_Format(st->PicklingError,
diff -r 2e23f7b9515c Modules/_sre.c
--- a/Modules/_sre.c	Mon Aug 22 14:29:54 2016 +0200
+++ b/Modules/_sre.c	Mon Aug 22 15:32:49 2016 +0200
@@ -1157,7 +1157,7 @@ pattern_subx(PatternObject* self, PyObje
             match = pattern_new_match(self, &state, 1);
             if (!match)
                 goto error;
-            item = _PyObject_FastCall(filter, &match, 1, NULL);
+            item = _PyObject_CallArg1(filter, match);
             Py_DECREF(match);
             if (!item)
                 goto error;
diff -r 2e23f7b9515c Objects/abstract.c
--- a/Objects/abstract.c	Mon Aug 22 14:29:54 2016 +0200
+++ b/Objects/abstract.c	Mon Aug 22 15:32:49 2016 +0200
@@ -2255,12 +2255,12 @@ PyObject*
 }
 
 PyObject *
-_PyObject_FastCall(PyObject *func, PyObject **args, int nargs, PyObject *kwargs)
+_PyObject_FastCallDict(PyObject *func, PyObject **args, int nargs, PyObject *kwargs)
 {
     ternaryfunc call;
     PyObject *result = NULL;
 
-    /* _PyObject_FastCall() must not be called with an exception set,
+    /* _PyObject_FastCallDict() must not be called with an exception set,
        because it may clear it (directly or indirectly) and so the
        caller loses its exception */
     assert(!PyErr_Occurred());
@@ -2318,7 +2318,7 @@ call_function_tail(PyObject *callable, P
     assert(args != NULL);
 
     if (!PyTuple_Check(args)) {
-        result = _PyObject_FastCall(callable, &args, 1, NULL);
+        result = _PyObject_CallArg1(callable, args);
     }
     else {
         result = PyObject_Call(callable, args, NULL);
@@ -2338,7 +2338,7 @@ PyObject_CallFunction(PyObject *callable
     }
 
     if (!format || !*format) {
-        return _PyObject_FastCall(callable, NULL, 0, NULL);
+        return _PyObject_CallNoArg(callable);
     }
 
     va_start(va, format);
@@ -2364,7 +2364,7 @@ PyObject *
     }
 
     if (!format || !*format) {
-        return _PyObject_FastCall(callable, NULL, 0, NULL);
+        return _PyObject_CallNoArg(callable);
     }
 
     va_start(va, format);
@@ -2392,7 +2392,7 @@ callmethod(PyObject* func, const char *f
     }
 
     if (!format || !*format) {
-        return _PyObject_FastCall(func, NULL, 0, NULL);
+        return _PyObject_CallNoArg(func);
     }
 
     if (is_size_t) {
diff -r 2e23f7b9515c Objects/fileobject.c
--- a/Objects/fileobject.c	Mon Aug 22 14:29:54 2016 +0200
+++ b/Objects/fileobject.c	Mon Aug 22 15:32:49 2016 +0200
@@ -146,7 +146,7 @@ PyFile_WriteObject(PyObject *v, PyObject
         Py_DECREF(writer);
         return -1;
     }
-    result = _PyObject_FastCall(writer, &value, 1, NULL);
+    result = _PyObject_CallArg1(writer, value);
     Py_DECREF(value);
     Py_DECREF(writer);
     if (result == NULL)
diff -r 2e23f7b9515c Objects/iterobject.c
--- a/Objects/iterobject.c	Mon Aug 22 14:29:54 2016 +0200
+++ b/Objects/iterobject.c	Mon Aug 22 15:32:49 2016 +0200
@@ -214,7 +214,7 @@ calliter_iternext(calliterobject *it)
         return NULL;
     }
 
-    result = _PyObject_FastCall(it->it_callable, NULL, 0, NULL);
+    result = _PyObject_CallNoArg(it->it_callable);
     if (result != NULL) {
         int ok;
 
diff -r 2e23f7b9515c Objects/typeobject.c
--- a/Objects/typeobject.c	Mon Aug 22 14:29:54 2016 +0200
+++ b/Objects/typeobject.c	Mon Aug 22 15:32:49 2016 +0200
@@ -1450,7 +1450,7 @@ call_method(PyObject *o, _Py_Identifier 
         Py_DECREF(args);
     }
     else {
-        retval = _PyObject_FastCall(func, NULL, 0, NULL);
+        retval = _PyObject_CallNoArg(func);
     }
 
     Py_DECREF(func);
@@ -1490,7 +1490,7 @@ call_maybe(PyObject *o, _Py_Identifier *
         Py_DECREF(args);
     }
     else {
-        retval = _PyObject_FastCall(func, NULL, 0, NULL);
+        retval = _PyObject_CallNoArg(func);
     }
 
     Py_DECREF(func);
@@ -5834,7 +5834,7 @@ slot_sq_item(PyObject *self, Py_ssize_t 
         goto error;
     }
 
-    retval = _PyObject_FastCall(func, &ival, 1, NULL);
+    retval = _PyObject_CallArg1(func, ival);
     Py_DECREF(func);
     Py_DECREF(ival);
     return retval;
@@ -5875,7 +5875,7 @@ slot_sq_contains(PyObject *self, PyObjec
         return -1;
     }
     if (func != NULL) {
-        res = _PyObject_FastCall(func, &value, 1, NULL);
+        res = _PyObject_CallArg1(func, value);
         Py_DECREF(func);
         if (res != NULL) {
             result = PyObject_IsTrue(res);
@@ -5967,7 +5967,7 @@ slot_nb_bool(PyObject *self)
         using_len = 1;
     }
 
-    value = _PyObject_FastCall(func, NULL, 0, NULL);
+    value = _PyObject_CallNoArg(func);
     if (value == NULL) {
         goto error;
     }
@@ -6245,7 +6245,7 @@ slot_tp_richcompare(PyObject *self, PyOb
         PyErr_Clear();
         Py_RETURN_NOTIMPLEMENTED;
     }
-    res = _PyObject_FastCall(func, &other, 1, NULL);
+    res = _PyObject_CallArg1(func, other);
     Py_DECREF(func);
     return res;
 }
@@ -6266,7 +6266,7 @@ slot_tp_iter(PyObject *self)
     }
 
     if (func != NULL) {
-        res = _PyObject_FastCall(func, NULL, 0, NULL);
+        res = _PyObject_CallNoArg(func);
         Py_DECREF(func);
         return res;
     }
diff -r 2e23f7b9515c Python/ceval.c
--- a/Python/ceval.c	Mon Aug 22 14:29:54 2016 +0200
+++ b/Python/ceval.c	Mon Aug 22 15:32:49 2016 +0200
@@ -4593,7 +4593,7 @@ PyEval_CallObjectWithKeywords(PyObject *
 
     if (args == NULL) {
         if (kwargs == NULL) {
-            return _PyObject_FastCall(func, NULL, 0, 0);
+            return _PyObject_CallNoArg(func);
         }
 
         args = PyTuple_New(0);
@@ -5298,7 +5298,7 @@ import_name(PyFrameObject *f, PyObject *
     stack[2] = f->f_locals == NULL ? Py_None : f->f_locals;
     stack[3] = fromlist;
     stack[4] = level;
-    res = _PyObject_FastCall(import_func, stack, 5, NULL);
+    res = _PyObject_FastCall(import_func, stack, 5);
     Py_DECREF(import_func);
     return res;
 }
diff -r 2e23f7b9515c Python/pythonrun.c
--- a/Python/pythonrun.c	Mon Aug 22 14:29:54 2016 +0200
+++ b/Python/pythonrun.c	Mon Aug 22 15:32:49 2016 +0200
@@ -636,7 +636,7 @@ PyErr_PrintEx(int set_sys_last_vars)
         stack[0] = exception;
         stack[1] = v;
         stack[2] = tb;
-        result = _PyObject_FastCall(hook, stack, 3, NULL);
+        result = _PyObject_FastCall(hook, stack, 3);
         if (result == NULL) {
             PyObject *exception2, *v2, *tb2;
             if (PyErr_ExceptionMatches(PyExc_SystemExit)) {
diff -r 2e23f7b9515c Python/sysmodule.c
--- a/Python/sysmodule.c	Mon Aug 22 14:29:54 2016 +0200
+++ b/Python/sysmodule.c	Mon Aug 22 15:32:49 2016 +0200
@@ -380,7 +380,7 @@ call_trampoline(PyObject* callback,
     stack[2] = (arg != NULL) ? arg : Py_None;
 
     /* call the Python-level function */
-    result = _PyObject_FastCall(callback, stack, 3, NULL);
+    result = _PyObject_FastCall(callback, stack, 3);
 
     PyFrame_LocalsToFast(frame, 1);
     if (result == NULL) {
@@ -2122,7 +2122,7 @@ sys_pyfile_write_unicode(PyObject *unico
     if (writer == NULL)
         goto error;
 
-    result = _PyObject_FastCall(writer, &unicode, 1, NULL);
+    result = _PyObject_CallArg1(writer, unicode);
     if (result == NULL) {
         goto error;
     } else {