Test to verify that closures can't be instantiated

Zend/tests/closures/closure_instantiate.phpt

@@ -0,0 +1,21 @@
+--TEST--
+Closures cannot be instantiated directly
+--CREDITS--
+Mark Baker mark@lange.demon.co.uk at the PHPNW2017 Conference for PHP Testfest 2017
+--FILE--
+<?php
+
+try {
+    // Closures should be instantiatable using new
+    $x = new Closure();
+} catch (Exception $e) {
+    // Instantiating a closure is an error, not an exception, so we shouldn't see this
+    echo 'EXCEPTION: ', $e->getMessage();
+} catch (Throwable $e) {
+    // This is the mesage that we should see for a caught error
+    echo 'ERROR: ', $e->getMessage();
+}
+
+?>
+--EXPECT--
+ERROR: Instantiation of 'Closure' is not allowed