1 files changed, 3 insertions, 3 deletions
diff --git a/Objects/call.c b/Objects/call.c
index 4294a9b..9246432 100644
--- a/Objects/call.c
+++ b/Objects/call.c
@@ -854,9 +854,9 @@ _PyObject_FastCall_Prepend(PyObject *callable,
 
     /* use borrowed references */
     args2[0] = obj;
-    memcpy(&args2[1],
-           args,
-           (nargs - 1)* sizeof(PyObject *));
+    if (nargs > 1) {
+        memcpy(&args2[1], args, (nargs - 1) * sizeof(PyObject *));
+    }
 
     result = _PyObject_FastCall(callable, args2, nargs);
     if (args2 != small_stack) {