Issue #28858: Remove _PyObject_CallArg1() macro

Replace
   _PyObject_CallArg1(func, arg)
with
   PyObject_CallFunctionObjArgs(func, arg, NULL)

Using the _PyObject_CallArg1() macro increases the usage of the C stack, which
was unexpected and unwanted. PyObject_CallFunctionObjArgs() doesn't have this
issue.

4 files changed, 6 insertions, 6 deletions

diff --git a/Objects/abstract.c b/Objects/abstract.c
index beb12c9..a6a58db 100644
--- a/Objects/abstract.c
+++ b/Objects/abstract.c
@@ -2496,7 +2496,7 @@ call_function_tail(PyObject *callable, PyObject *args)
     assert(args != NULL);
 
     if (!PyTuple_Check(args)) {
-        result = _PyObject_CallArg1(callable, args);
+        result = PyObject_CallFunctionObjArgs(callable, args, NULL);
     }
     else {
         result = PyObject_Call(callable, args, NULL);
diff --git a/Objects/fileobject.c b/Objects/fileobject.c
index 32f8a89..fcdb5fd 100644
--- a/Objects/fileobject.c
+++ b/Objects/fileobject.c
@@ -146,7 +146,7 @@ PyFile_WriteObject(PyObject *v, PyObject *f, int flags)
         Py_DECREF(writer);
         return -1;
     }
-    result = _PyObject_CallArg1(writer, value);
+    result = PyObject_CallFunctionObjArgs(writer, value, NULL);
     Py_DECREF(value);
     Py_DECREF(writer);
     if (result == NULL)
diff --git a/Objects/genobject.c b/Objects/genobject.c
index bd7873b..59f53ce 100644
--- a/Objects/genobject.c
+++ b/Objects/genobject.c
@@ -1341,7 +1341,7 @@ async_gen_init_hooks(PyAsyncGenObject *o)
         PyObject *res;
 
         Py_INCREF(firstiter);
-        res = _PyObject_CallArg1(firstiter, o);
+        res = PyObject_CallFunctionObjArgs(firstiter, o, NULL);
         Py_DECREF(firstiter);
         if (res == NULL) {
             return 1;
diff --git a/Objects/typeobject.c b/Objects/typeobject.c
index 0af1534..d9699ef 100644
--- a/Objects/typeobject.c
+++ b/Objects/typeobject.c
@@ -5873,7 +5873,7 @@ slot_sq_item(PyObject *self, Py_ssize_t i)
         goto error;
     }
 
-    retval = _PyObject_CallArg1(func, ival);
+    retval = PyObject_CallFunctionObjArgs(func, ival, NULL);
     Py_DECREF(func);
     Py_DECREF(ival);
     return retval;
@@ -5914,7 +5914,7 @@ slot_sq_contains(PyObject *self, PyObject *value)
         return -1;
     }
     if (func != NULL) {
-        res = _PyObject_CallArg1(func, value);
+        res = PyObject_CallFunctionObjArgs(func, value, NULL);
         Py_DECREF(func);
         if (res != NULL) {
             result = PyObject_IsTrue(res);
@@ -6284,7 +6284,7 @@ slot_tp_richcompare(PyObject *self, PyObject *other, int op)
         PyErr_Clear();
         Py_RETURN_NOTIMPLEMENTED;
     }
-    res = _PyObject_CallArg1(func, other);
+    res = PyObject_CallFunctionObjArgs(func, other, NULL);
     Py_DECREF(func);
     return res;
 }