diff --git a/Zend/tests/bug70685.phpt b/Zend/tests/bug70685.phpt
new file mode 100644
index 00000000000..e286e58e7d3
--- /dev/null
+++ b/Zend/tests/bug70685.phpt
@@ -0,0 +1,22 @@
+--TEST--
+Bug #70685: Segfault for getClosure() internal method rebind with invalid $this
+--FILE--
+<?php
+
+class cls {}
+
+$c = (new ReflectionMethod('SplStack', 'count'))->getClosure(new SplStack);
+$c = $c->bindTo(new cls);
+var_dump($c);
+
+$c = (new ReflectionMethod('SplStack', 'count'))->getClosure(new SplStack);
+$c = $c->bindTo(new SplStack, 'cls');
+var_dump($c);
+
+?>
+--EXPECTF--
+Warning: Cannot bind internal method SplDoublyLinkedList::count() to object of class cls in %s on line %d
+NULL
+
+Warning: Cannot bind function SplDoublyLinkedList::count to scope class cls in %s on line %d
+NULL