add test for #495

tests/constant-ast-copy.phpt

@@ -0,0 +1,30 @@
+--TEST--
+Test constant AST copy bug #495
+--DESCRIPTION--
+AST in op array literals caused corrupted heaps because it wasn't copied properly.
+--FILE--
+<?php
+class Test
+{
+    private static function getClassPropertyNames(
+		string $classname, 
+		$view = \ReflectionProperty::IS_PUBLIC | \ReflectionProperty::IS_PROTECTED) {
+	}
+}
+
+$t = new class extends \Thread {
+    public function run() {
+        throw new \Exception();
+    }
+};
+
+$t->start() && $t->join();
+?>
+--EXPECTF--
+Fatal error: Uncaught Exception in %s:12
+Stack trace:
+#0 [internal function]: class@anonymous->run()
+#1 {main}
+  thrown in %s on line 12
+
+