changeset:   102787:abb93035ebb7
user:        Victor Stinner <victor.stinner@gmail.com>
date:        Sat Aug 20 01:34:44 2016 +0200
files:       Modules/_elementtree.c
description:
_elementtree: deepcopy() now uses fast call

Issue #27128.


diff -r 351b987d6d1c -r abb93035ebb7 Modules/_elementtree.c
--- a/Modules/_elementtree.c	Sat Aug 20 01:24:22 2016 +0200
+++ b/Modules/_elementtree.c	Sat Aug 20 01:34:44 2016 +0200
@@ -819,9 +819,8 @@
 deepcopy(PyObject *object, PyObject *memo)
 {
     /* do a deep copy of the given object */
-    PyObject *args;
-    PyObject *result;
     elementtreestate *st;
+    PyObject *stack[2];
 
     /* Fast paths */
     if (object == Py_None || PyUnicode_CheckExact(object)) {
@@ -857,12 +856,9 @@
         return NULL;
     }
 
-    args = PyTuple_Pack(2, object, memo);
-    if (!args)
-        return NULL;
-    result = PyObject_CallObject(st->deepcopy_obj, args);
-    Py_DECREF(args);
-    return result;
+    stack[0] = object;
+    stack[1] = memo;
+    return _PyObject_FastCall(st->deepcopy_obj, stack, 2, NULL);
 }