1 files changed, 70 insertions, 1 deletions

diff --git a/Objects/intobject.c b/Objects/intobject.c
index 5a0b259..d1b9599 100644
--- a/Objects/intobject.c
+++ b/Objects/intobject.c
@@ -108,6 +108,22 @@ PyInt_FromLong(long ival)
 	return (PyObject *) v;
 }
 
+PyObject *
+PyInt_FromSize_t(size_t ival)
+{
+	if (ival <= LONG_MAX)
+		return PyInt_FromLong((long)ival);
+	return _PyLong_FromSize_t(ival);
+}
+
+PyObject *
+PyInt_FromSsize_t(Py_ssize_t ival)
+{
+	if (ival >= LONG_MIN && ival <= LONG_MAX)
+		return PyInt_FromLong((long)ival);
+	return _PyLong_FromSsize_t(ival);
+}
+
 static void
 int_dealloc(PyIntObject *v)
 {
@@ -169,6 +185,59 @@ PyInt_AsLong(register PyObject *op)
 	return val;
 }
 
+Py_ssize_t
+PyInt_AsSsize_t(register PyObject *op)
+{
+	PyNumberMethods *nb;
+	PyIntObject *io;
+	Py_ssize_t val;
+	if (op && !PyInt_CheckExact(op) && PyLong_Check(op))
+		return _PyLong_AsSsize_t(op);
+#if SIZEOF_SIZE_T==SIZEOF_LONG
+	return PyInt_AsLong(op);
+#else
+
+	if (op && PyInt_Check(op))
+		return PyInt_AS_LONG((PyIntObject*) op);
+
+	if (op == NULL || (nb = op->ob_type->tp_as_number) == NULL ||
+	    (nb->nb_int == NULL && nb->nb_long == 0)) {
+		PyErr_SetString(PyExc_TypeError, "an integer is required");
+		return -1;
+	}
+
+	if (nb->nb_long != 0) {
+		io = (PyIntObject*) (*nb->nb_long) (op);
+	} else {
+		io = (PyIntObject*) (*nb->nb_int) (op);
+	}
+	if (io == NULL)
+		return -1;
+	if (!PyInt_Check(io)) {
+		if (PyLong_Check(io)) {
+			/* got a long? => retry int conversion */
+			val = _PyLong_AsSsize_t((PyObject *)io);
+			Py_DECREF(io);
+			if ((val == -1) && PyErr_Occurred())
+				return -1;
+			return val;
+		}
+		else
+		{
+			Py_DECREF(io);
+			PyErr_SetString(PyExc_TypeError,
+					"nb_int should return int object");
+			return -1;
+		}
+	}
+
+	val = PyInt_AS_LONG(io);
+	Py_DECREF(io);
+
+	return val;
+#endif
+}
+
 unsigned long
 PyInt_AsUnsignedLongMask(register PyObject *op)
 {
@@ -302,7 +371,7 @@ PyInt_FromString(char *s, char **pend, int base)
 
 #ifdef Py_USING_UNICODE
 PyObject *
-PyInt_FromUnicode(Py_UNICODE *s, int length, int base)
+PyInt_FromUnicode(Py_UNICODE *s, Py_ssize_t length, int base)
 {
 	PyObject *result;
 	char *buffer = PyMem_MALLOC(length+1);