diff -r 6c2e2de5ab8e Objects/listobject.c
--- a/Objects/listobject.c	Sat Jul 30 23:51:13 2016 -0700
+++ b/Objects/listobject.c	Mon Aug 01 01:22:50 2016 +0800
@@ -26,8 +26,7 @@
 list_resize(PyListObject *self, Py_ssize_t newsize)
 {
     PyObject **items;
-    size_t new_allocated;
-    Py_ssize_t allocated = self->allocated;
+    Py_ssize_t new_allocated, allocated = self->allocated;
 
     /* Bypass realloc() when a previous overallocation is large enough
        to accommodate the newsize.  If the newsize falls lower than half
@@ -49,7 +48,7 @@
     new_allocated = (newsize >> 3) + (newsize < 9 ? 3 : 6);
 
     /* check for integer overflow */
-    if (new_allocated > PY_SIZE_MAX - newsize) {
+    if (new_allocated > PY_SSIZE_T_MAX - newsize) {
         PyErr_NoMemory();
         return -1;
     } else {
@@ -59,14 +58,11 @@
     if (newsize == 0)
         new_allocated = 0;
     items = self->ob_item;
-    if (new_allocated <= (PY_SIZE_MAX / sizeof(PyObject *)))
-        PyMem_RESIZE(items, PyObject *, new_allocated);
-    else
-        items = NULL;
-    if (items == NULL) {
+    if (!PyMem_RESIZE(items, PyObject *, new_allocated)) {
         PyErr_NoMemory();
         return -1;
     }
+
     self->ob_item = items;
     Py_SIZE(self) = newsize;
     self->allocated = new_allocated;