Support coro_result in Task C impl

Author: itamaro

Include/internal/pycore_global_objects_fini_generated.h

@@ -337,6 +337,7 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(copy)
         STRUCT_FOR_ID(copyreg)
         STRUCT_FOR_ID(coro)
+        STRUCT_FOR_ID(coro_result)
         STRUCT_FOR_ID(count)
         STRUCT_FOR_ID(cwd)
         STRUCT_FOR_ID(d)

Include/internal/pycore_global_strings.h

@@ -2033,15 +2033,16 @@ _asyncio.Task.__init__
     loop: object = None
     name: object = None
     context: object = None
+    coro_result: object = None
 
 A coroutine wrapped in a Future.
 [clinic start generated code]*/
 
 static int
 _asyncio_Task___init___impl(TaskObj *self, PyObject *coro, PyObject *loop,
-                            PyObject *name, PyObject *context)
-/*[clinic end generated code: output=49ac96fe33d0e5c7 input=924522490c8ce825]*/
-
+                            PyObject *name, PyObject *context,
+                            PyObject *coro_result)
+/*[clinic end generated code: output=e241855787412a77 input=56034b36df8d270d]*/
 {
     if (future_init((FutureObj*)self, loop)) {
         return -1;
@@ -2089,8 +2090,10 @@ _asyncio_Task___init___impl(TaskObj *self, PyObject *coro, PyObject *loop,
         return -1;
     }
 
-    if (task_call_step_soon(state, self, NULL)) {
-        return -1;
+    if (!Py_IsNone(coro_result)) {
+        if (task_call_step_soon(state, self, NULL)) {
+            return -1;
+        }
     }
     return register_task(state, (PyObject*)self);
 }

Include/internal/pycore_runtime_init_generated.h

@@ -151,7 +151,7 @@ def counting_task_constructor(coro, *, loop=None, name=None, context=None, coro_
                 # only count calls that will actually result a task scheduled to the event loop
                 # (if coro_result is non-None, it will return synchronously)
                 self.task_count += 1
-            return asyncio.tasks._PyTask(coro, loop=loop, name=name, context=context, coro_result=coro_result)
+            return asyncio.Task(coro, loop=loop, name=name, context=context, coro_result=coro_result)
 
         def counting_task_factory(loop, coro, *, name=None, context=None, coro_result=None):
             return counting_task_constructor(coro, loop=loop, name=name, context=context, coro_result=coro_result)