1 files changed, 6 insertions, 1 deletions
diff --git a/Objects/memoryobject.c b/Objects/memoryobject.c
index ad16bb2a38..4997fcc6c9 100644
--- a/Objects/memoryobject.c
+++ b/Objects/memoryobject.c
@@ -179,7 +179,7 @@ _indirect_copy_nd(char *dest, Py_buffer *view, char fort)
     int k;
     Py_ssize_t elements;
     char *ptr;
-    void (*func)(int, Py_ssize_t *, Py_ssize_t *);
+    void (*func)(int, Py_ssize_t *, const Py_ssize_t *);
 
     if (view->ndim > PY_SSIZE_T_MAX / sizeof(Py_ssize_t)) {
         PyErr_NoMemory();
@@ -639,6 +639,11 @@ memory_ass_sub(PyMemoryViewObject *self, PyObject *key, PyObject *value)
             "cannot modify read-only memory");
         return -1;
     }
+    if (value == NULL) {
+        PyErr_SetString(PyExc_TypeError,
+                        "cannot delete memory");
+        return -1;
+    }
     if (view->ndim != 1) {
         PyErr_SetNone(PyExc_NotImplementedError);
         return -1;