Remove Py_TPFLAGS_HAVE_AM_SEND

The flag is not needed.

Author: encukou

Doc/c-api/typeobj.rst

@@ -1178,14 +1178,6 @@ and :c:type:`PyType_Type` effectively act as defaults.)
 
       .. versionadded:: 3.9
 
-
-   .. data:: Py_TPFLAGS_HAVE_AM_SEND
-
-      This bit is set when the :c:member:`~PyAsyncMethods.am_send` entry is present in the
-      :c:member:`~PyTypeObject.tp_as_async` slot of type structure.
-
-      .. versionadded:: 3.10
-
    .. data:: Py_TPFLAGS_IMMUTABLETYPE
 
       This bit is set for type objects that are immutable: type attributes cannot be set nor deleted.

Include/object.h

@@ -374,11 +374,6 @@ given type object has a specified feature.
 /* Type is abstract and cannot be instantiated */
 #define Py_TPFLAGS_IS_ABSTRACT (1UL << 20)
 
-#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x030A0000
-/* Type has am_send entry in tp_as_async slot */
-#define Py_TPFLAGS_HAVE_AM_SEND (1UL << 21)
-#endif
-
 // This undocumented flag gives certain built-ins their unique pattern-matching
 // behavior, which allows a single positional subpattern to match against the
 // subject itself (rather than a mapped attribute on it):

Modules/_asynciomodule.c

@@ -1764,8 +1764,7 @@ static PyTypeObject FutureIterType = {
     .tp_dealloc = (destructor)FutureIter_dealloc,
     .tp_as_async = &FutureIterType_as_async,
     .tp_getattro = PyObject_GenericGetAttr,
-    .tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
-        Py_TPFLAGS_HAVE_AM_SEND,
+    .tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC,
     .tp_traverse = (traverseproc)FutureIter_traverse,
     .tp_iter = PyObject_SelfIter,
     .tp_iternext = (iternextfunc)FutureIter_iternext,

Objects/abstract.c

@@ -2804,9 +2804,7 @@ PyIter_Send(PyObject *iter, PyObject *arg, PyObject **result)
     _Py_IDENTIFIER(send);
     assert(arg != NULL);
     assert(result != NULL);
-    if (PyType_HasFeature(Py_TYPE(iter), Py_TPFLAGS_HAVE_AM_SEND)) {
-        assert (Py_TYPE(iter)->tp_as_async != NULL);
-        assert (Py_TYPE(iter)->tp_as_async->am_send != NULL);
+    if (Py_TYPE(iter)->tp_as_async && Py_TYPE(iter)->tp_as_async->am_send) {
         PySendResult res = Py_TYPE(iter)->tp_as_async->am_send(iter, arg, result);
         assert(_Py_CheckSlotResult(iter, "am_send", res != PYGEN_ERROR));
         return res;

Objects/genobject.c

@@ -782,8 +782,7 @@ PyTypeObject PyGen_Type = {
     PyObject_GenericGetAttr,                    /* tp_getattro */
     0,                                          /* tp_setattro */
     0,                                          /* tp_as_buffer */
-    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
-        Py_TPFLAGS_HAVE_AM_SEND,                /* tp_flags */
+    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC,    /* tp_flags */
     0,                                          /* tp_doc */
     (traverseproc)gen_traverse,                 /* tp_traverse */
     0,                                          /* tp_clear */
@@ -1029,8 +1028,7 @@ PyTypeObject PyCoro_Type = {
     PyObject_GenericGetAttr,                    /* tp_getattro */
     0,                                          /* tp_setattro */
     0,                                          /* tp_as_buffer */
-    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
-        Py_TPFLAGS_HAVE_AM_SEND,                /* tp_flags */
+    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC,    /* tp_flags */
     0,                                          /* tp_doc */
     (traverseproc)gen_traverse,                 /* tp_traverse */
     0,                                          /* tp_clear */
@@ -1415,8 +1413,7 @@ PyTypeObject PyAsyncGen_Type = {
     PyObject_GenericGetAttr,                    /* tp_getattro */
     0,                                          /* tp_setattro */
     0,                                          /* tp_as_buffer */
-    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
-        Py_TPFLAGS_HAVE_AM_SEND,                /* tp_flags */
+    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC,    /* tp_flags */
     0,                                          /* tp_doc */
     (traverseproc)async_gen_traverse,           /* tp_traverse */
     0,                                          /* tp_clear */

Objects/typeobject.c

@@ -5967,14 +5967,6 @@ type_ready_pre_checks(PyTypeObject *type)
         _PyObject_ASSERT((PyObject *)type, type->tp_call != NULL);
     }
 
-    /* Consistency check for Py_TPFLAGS_HAVE_AM_SEND - flag requires
-     * type->tp_as_async->am_send to be present.
-     */
-    if (type->tp_flags & Py_TPFLAGS_HAVE_AM_SEND) {
-        _PyObject_ASSERT((PyObject *)type, type->tp_as_async != NULL);
-        _PyObject_ASSERT((PyObject *)type, type->tp_as_async->am_send != NULL);
-    }
-
     /* Consistency checks for pattern matching
      * Py_TPFLAGS_SEQUENCE and Py_TPFLAGS_MAPPING are mutually exclusive */
     _PyObject_ASSERT((PyObject *)type, (type->tp_flags & COLLECTION_FLAGS) != COLLECTION_FLAGS);