diff -Naur cpython-19.09.2016/Python/Python-ast.c cpython-19.09.2016.new/Python/Python-ast.c
--- cpython-19.09.2016/Python/Python-ast.c	Mon Sep 19 08:53:53 2016
+++ cpython-19.09.2016.new/Python/Python-ast.c	Mon Sep 26 15:10:59 2016
@@ -3993,7 +3993,7 @@
             len = PyList_GET_SIZE(tmp);
             body = _Py_asdl_seq_new(len, arena);
             if (body == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 stmt_ty value;
                 res = obj2ast_stmt(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -4028,7 +4028,7 @@
             len = PyList_GET_SIZE(tmp);
             body = _Py_asdl_seq_new(len, arena);
             if (body == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 stmt_ty value;
                 res = obj2ast_stmt(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -4085,7 +4085,7 @@
             len = PyList_GET_SIZE(tmp);
             body = _Py_asdl_seq_new(len, arena);
             if (body == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 stmt_ty value;
                 res = obj2ast_stmt(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -4188,7 +4188,7 @@
             len = PyList_GET_SIZE(tmp);
             body = _Py_asdl_seq_new(len, arena);
             if (body == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 stmt_ty value;
                 res = obj2ast_stmt(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -4212,7 +4212,7 @@
             len = PyList_GET_SIZE(tmp);
             decorator_list = _Py_asdl_seq_new(len, arena);
             if (decorator_list == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 expr_ty value;
                 res = obj2ast_expr(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -4284,7 +4284,7 @@
             len = PyList_GET_SIZE(tmp);
             body = _Py_asdl_seq_new(len, arena);
             if (body == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 stmt_ty value;
                 res = obj2ast_stmt(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -4308,7 +4308,7 @@
             len = PyList_GET_SIZE(tmp);
             decorator_list = _Py_asdl_seq_new(len, arena);
             if (decorator_list == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 expr_ty value;
                 res = obj2ast_expr(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -4369,7 +4369,7 @@
             len = PyList_GET_SIZE(tmp);
             bases = _Py_asdl_seq_new(len, arena);
             if (bases == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 expr_ty value;
                 res = obj2ast_expr(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -4393,7 +4393,7 @@
             len = PyList_GET_SIZE(tmp);
             keywords = _Py_asdl_seq_new(len, arena);
             if (keywords == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 keyword_ty value;
                 res = obj2ast_keyword(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -4417,7 +4417,7 @@
             len = PyList_GET_SIZE(tmp);
             body = _Py_asdl_seq_new(len, arena);
             if (body == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 stmt_ty value;
                 res = obj2ast_stmt(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -4441,7 +4441,7 @@
             len = PyList_GET_SIZE(tmp);
             decorator_list = _Py_asdl_seq_new(len, arena);
             if (decorator_list == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 expr_ty value;
                 res = obj2ast_expr(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -4498,7 +4498,7 @@
             len = PyList_GET_SIZE(tmp);
             targets = _Py_asdl_seq_new(len, arena);
             if (targets == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 expr_ty value;
                 res = obj2ast_expr(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -4534,7 +4534,7 @@
             len = PyList_GET_SIZE(tmp);
             targets = _Py_asdl_seq_new(len, arena);
             if (targets == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 expr_ty value;
                 res = obj2ast_expr(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -4709,7 +4709,7 @@
             len = PyList_GET_SIZE(tmp);
             body = _Py_asdl_seq_new(len, arena);
             if (body == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 stmt_ty value;
                 res = obj2ast_stmt(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -4733,7 +4733,7 @@
             len = PyList_GET_SIZE(tmp);
             orelse = _Py_asdl_seq_new(len, arena);
             if (orelse == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 stmt_ty value;
                 res = obj2ast_stmt(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -4793,7 +4793,7 @@
             len = PyList_GET_SIZE(tmp);
             body = _Py_asdl_seq_new(len, arena);
             if (body == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 stmt_ty value;
                 res = obj2ast_stmt(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -4817,7 +4817,7 @@
             len = PyList_GET_SIZE(tmp);
             orelse = _Py_asdl_seq_new(len, arena);
             if (orelse == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 stmt_ty value;
                 res = obj2ast_stmt(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -4865,7 +4865,7 @@
             len = PyList_GET_SIZE(tmp);
             body = _Py_asdl_seq_new(len, arena);
             if (body == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 stmt_ty value;
                 res = obj2ast_stmt(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -4889,7 +4889,7 @@
             len = PyList_GET_SIZE(tmp);
             orelse = _Py_asdl_seq_new(len, arena);
             if (orelse == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 stmt_ty value;
                 res = obj2ast_stmt(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -4937,7 +4937,7 @@
             len = PyList_GET_SIZE(tmp);
             body = _Py_asdl_seq_new(len, arena);
             if (body == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 stmt_ty value;
                 res = obj2ast_stmt(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -4961,7 +4961,7 @@
             len = PyList_GET_SIZE(tmp);
             orelse = _Py_asdl_seq_new(len, arena);
             if (orelse == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 stmt_ty value;
                 res = obj2ast_stmt(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -4997,7 +4997,7 @@
             len = PyList_GET_SIZE(tmp);
             items = _Py_asdl_seq_new(len, arena);
             if (items == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 withitem_ty value;
                 res = obj2ast_withitem(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -5021,7 +5021,7 @@
             len = PyList_GET_SIZE(tmp);
             body = _Py_asdl_seq_new(len, arena);
             if (body == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 stmt_ty value;
                 res = obj2ast_stmt(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -5057,7 +5057,7 @@
             len = PyList_GET_SIZE(tmp);
             items = _Py_asdl_seq_new(len, arena);
             if (items == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 withitem_ty value;
                 res = obj2ast_withitem(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -5081,7 +5081,7 @@
             len = PyList_GET_SIZE(tmp);
             body = _Py_asdl_seq_new(len, arena);
             if (body == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 stmt_ty value;
                 res = obj2ast_stmt(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -5151,7 +5151,7 @@
             len = PyList_GET_SIZE(tmp);
             body = _Py_asdl_seq_new(len, arena);
             if (body == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 stmt_ty value;
                 res = obj2ast_stmt(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -5175,7 +5175,7 @@
             len = PyList_GET_SIZE(tmp);
             handlers = _Py_asdl_seq_new(len, arena);
             if (handlers == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 excepthandler_ty value;
                 res = obj2ast_excepthandler(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -5199,7 +5199,7 @@
             len = PyList_GET_SIZE(tmp);
             orelse = _Py_asdl_seq_new(len, arena);
             if (orelse == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 stmt_ty value;
                 res = obj2ast_stmt(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -5223,7 +5223,7 @@
             len = PyList_GET_SIZE(tmp);
             finalbody = _Py_asdl_seq_new(len, arena);
             if (finalbody == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 stmt_ty value;
                 res = obj2ast_stmt(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -5292,7 +5292,7 @@
             len = PyList_GET_SIZE(tmp);
             names = _Py_asdl_seq_new(len, arena);
             if (names == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 alias_ty value;
                 res = obj2ast_alias(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -5339,7 +5339,7 @@
             len = PyList_GET_SIZE(tmp);
             names = _Py_asdl_seq_new(len, arena);
             if (names == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 alias_ty value;
                 res = obj2ast_alias(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -5384,7 +5384,7 @@
             len = PyList_GET_SIZE(tmp);
             names = _Py_asdl_seq_new(len, arena);
             if (names == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 identifier value;
                 res = obj2ast_identifier(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -5419,7 +5419,7 @@
             len = PyList_GET_SIZE(tmp);
             names = _Py_asdl_seq_new(len, arena);
             if (names == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 identifier value;
                 res = obj2ast_identifier(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -5560,7 +5560,7 @@
             len = PyList_GET_SIZE(tmp);
             values = _Py_asdl_seq_new(len, arena);
             if (values == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 expr_ty value;
                 res = obj2ast_expr(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -5756,7 +5756,7 @@
             len = PyList_GET_SIZE(tmp);
             keys = _Py_asdl_seq_new(len, arena);
             if (keys == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 expr_ty value;
                 res = obj2ast_expr(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -5780,7 +5780,7 @@
             len = PyList_GET_SIZE(tmp);
             values = _Py_asdl_seq_new(len, arena);
             if (values == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 expr_ty value;
                 res = obj2ast_expr(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -5815,7 +5815,7 @@
             len = PyList_GET_SIZE(tmp);
             elts = _Py_asdl_seq_new(len, arena);
             if (elts == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 expr_ty value;
                 res = obj2ast_expr(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -5862,7 +5862,7 @@
             len = PyList_GET_SIZE(tmp);
             generators = _Py_asdl_seq_new(len, arena);
             if (generators == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 comprehension_ty value;
                 res = obj2ast_comprehension(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -5909,7 +5909,7 @@
             len = PyList_GET_SIZE(tmp);
             generators = _Py_asdl_seq_new(len, arena);
             if (generators == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 comprehension_ty value;
                 res = obj2ast_comprehension(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -5968,7 +5968,7 @@
             len = PyList_GET_SIZE(tmp);
             generators = _Py_asdl_seq_new(len, arena);
             if (generators == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 comprehension_ty value;
                 res = obj2ast_comprehension(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -6015,7 +6015,7 @@
             len = PyList_GET_SIZE(tmp);
             generators = _Py_asdl_seq_new(len, arena);
             if (generators == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 comprehension_ty value;
                 res = obj2ast_comprehension(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -6128,7 +6128,7 @@
             len = PyList_GET_SIZE(tmp);
             ops = _Py_asdl_int_seq_new(len, arena);
             if (ops == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 cmpop_ty value;
                 res = obj2ast_cmpop(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -6152,7 +6152,7 @@
             len = PyList_GET_SIZE(tmp);
             comparators = _Py_asdl_seq_new(len, arena);
             if (comparators == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 expr_ty value;
                 res = obj2ast_expr(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -6200,7 +6200,7 @@
             len = PyList_GET_SIZE(tmp);
             args = _Py_asdl_seq_new(len, arena);
             if (args == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 expr_ty value;
                 res = obj2ast_expr(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -6224,7 +6224,7 @@
             len = PyList_GET_SIZE(tmp);
             keywords = _Py_asdl_seq_new(len, arena);
             if (keywords == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 keyword_ty value;
                 res = obj2ast_keyword(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -6348,7 +6348,7 @@
             len = PyList_GET_SIZE(tmp);
             values = _Py_asdl_seq_new(len, arena);
             if (values == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 expr_ty value;
                 res = obj2ast_expr(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -6620,7 +6620,7 @@
             len = PyList_GET_SIZE(tmp);
             elts = _Py_asdl_seq_new(len, arena);
             if (elts == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 expr_ty value;
                 res = obj2ast_expr(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -6667,7 +6667,7 @@
             len = PyList_GET_SIZE(tmp);
             elts = _Py_asdl_seq_new(len, arena);
             if (elts == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 expr_ty value;
                 res = obj2ast_expr(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -6832,7 +6832,7 @@
             len = PyList_GET_SIZE(tmp);
             dims = _Py_asdl_seq_new(len, arena);
             if (dims == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 slice_ty value;
                 res = obj2ast_slice(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -7192,7 +7192,7 @@
         len = PyList_GET_SIZE(tmp);
         ifs = _Py_asdl_seq_new(len, arena);
         if (ifs == NULL) goto failed;
-        for (i = 0; i < len; i++) {
+        for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
             expr_ty value;
             res = obj2ast_expr(PyList_GET_ITEM(tmp, i), &value, arena);
             if (res != 0) goto failed;
@@ -7298,7 +7298,7 @@
             len = PyList_GET_SIZE(tmp);
             body = _Py_asdl_seq_new(len, arena);
             if (body == NULL) goto failed;
-            for (i = 0; i < len; i++) {
+            for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
                 stmt_ty value;
                 res = obj2ast_stmt(PyList_GET_ITEM(tmp, i), &value, arena);
                 if (res != 0) goto failed;
@@ -7344,7 +7344,7 @@
         len = PyList_GET_SIZE(tmp);
         args = _Py_asdl_seq_new(len, arena);
         if (args == NULL) goto failed;
-        for (i = 0; i < len; i++) {
+        for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
             arg_ty value;
             res = obj2ast_arg(PyList_GET_ITEM(tmp, i), &value, arena);
             if (res != 0) goto failed;
@@ -7378,7 +7378,7 @@
         len = PyList_GET_SIZE(tmp);
         kwonlyargs = _Py_asdl_seq_new(len, arena);
         if (kwonlyargs == NULL) goto failed;
-        for (i = 0; i < len; i++) {
+        for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
             arg_ty value;
             res = obj2ast_arg(PyList_GET_ITEM(tmp, i), &value, arena);
             if (res != 0) goto failed;
@@ -7402,7 +7402,7 @@
         len = PyList_GET_SIZE(tmp);
         kw_defaults = _Py_asdl_seq_new(len, arena);
         if (kw_defaults == NULL) goto failed;
-        for (i = 0; i < len; i++) {
+        for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
             expr_ty value;
             res = obj2ast_expr(PyList_GET_ITEM(tmp, i), &value, arena);
             if (res != 0) goto failed;
@@ -7436,7 +7436,7 @@
         len = PyList_GET_SIZE(tmp);
         defaults = _Py_asdl_seq_new(len, arena);
         if (defaults == NULL) goto failed;
-        for (i = 0; i < len; i++) {
+        for (i = 0; i < PyList_GET_SIZE(tmp); i++) {
             expr_ty value;
             res = obj2ast_expr(PyList_GET_ITEM(tmp, i), &value, arena);
             if (res != 0) goto failed;