add aliases for internal functions that we already exposed and used in PyO3

Author: timfel

graalpython/com.oracle.graal.python.cext/src/listobject.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018, 2023, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2018, 2024, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * The Universal Permissive License (UPL), Version 1.0
@@ -40,3 +40,7 @@
  */
 #include "capi.h"
 
+// alias for internal function, currently used in PyO3
+void _PyList_SET_ITEM(PyObject* a, Py_ssize_t b, PyObject* c) {
+    return PyTruffleList_SET_ITEM(a, b, c);
+}

graalpython/com.oracle.graal.python.cext/src/object.c

@@ -799,6 +799,11 @@ Py_ssize_t PyTruffle_REFCNT(PyObject *obj) {
 #endif /* GRAALVM_PYTHON_LLVM_MANAGED */
 }
 
+// alias, currently used in PyO3
+Py_ssize_t _Py_REFCNT(PyObject *obj) {
+    return PyTruffle_REFCNT(obj);
+}
+
 void PyTruffle_SET_REFCNT(PyObject* obj, Py_ssize_t cnt) {
 #ifndef GRAALVM_PYTHON_LLVM_MANAGED
     PyObject *dest;
@@ -843,6 +848,11 @@ PyTypeObject* PyTruffle_TYPE(PyObject *a) {
 #endif /* GRAALVM_PYTHON_LLVM_MANAGED */
 }
 
+// alias, currently used in PyO3
+PyTypeObject* _Py_TYPE(PyObject *obj) {
+    return PyTruffle_TYPE(obj);
+}
+
 Py_ssize_t PyTruffle_SIZE(PyObject *ob) {
     PyVarObject* a = (PyVarObject*)ob;
 #ifdef GRAALVM_PYTHON_LLVM_MANAGED
@@ -878,6 +888,11 @@ Py_ssize_t PyTruffle_SIZE(PyObject *ob) {
 #endif /* GRAALVM_PYTHON_LLVM_MANAGED */
 }
 
+// alias, currently used in PyO3
+Py_ssize_t _Py_SIZE(PyObject *obj) {
+    return PyTruffle_SIZE(obj);
+}
+
 void PyTruffle_SET_TYPE(PyObject *a, PyTypeObject *b) {
 	if (points_to_py_handle_space(a)) {
 		printf("changing the type of an object is not supported\n");