Index: Modules/_ctypes/_ctypes.c
===================================================================
--- Modules/_ctypes/_ctypes.c   (revision 84232)
+++ Modules/_ctypes/_ctypes.c   (working copy)
@@ -2461,8 +2461,10 @@
     view->ndim = dict->ndim;
     view->shape = dict->shape;
     view->itemsize = self->b_size;
-    for (i = 0; i < view->ndim; ++i) {
-        view->itemsize /= dict->shape[i];
+    if (view->itemsize) {
+        for (i = 0; i < view->ndim; ++i) {
+            view->itemsize /= dict->shape[i];
+        }
     }
     view->strides = NULL;
     view->suboffsets = NULL;
Index: Lib/ctypes/test/test_buffers.py
===================================================================
--- Lib/ctypes/test/test_buffers.py     (revision 84232)
+++ Lib/ctypes/test/test_buffers.py     (working copy)
@@ -20,6 +20,10 @@
         self.assertEqual(b[::2], b"ac")
         self.assertEqual(b[::5], b"a")

+    def test_buffer_interface(self):
+        self.assertEqual(len(bytearray(create_string_buffer(0))), 0)
+        self.assertEqual(len(bytearray(create_string_buffer(1))), 1)
+
     try:
         c_wchar
     except NameError: