Added test

ext/opcache/tests/preload.inc

@@ -6,3 +6,19 @@ if (isset($rt)) {
 	function f2() {
 	}
 }
+
+interface a {
+	function foo();
+	function bar();
+}
+interface b {
+	function foo();
+}
+
+abstract class c {
+	function bar() { }
+}
+
+class x extends c implements a, b {
+	function foo() { }
+}

ext/opcache/tests/preload_002.phpt

@@ -0,0 +1,19 @@
+--TEST--
+Preloading prototypes
+--INI--
+opcache.enable=1
+opcache.enable_cli=1
+opcache.optimization_level=-1
+opcache.preload={PWD}/preload.inc
+--SKIPIF--
+<?php require_once('skipif.inc'); ?>
+--FILE--
+<?php
+var_dump((new ReflectionMethod('x', 'foo'))->getPrototype()->class);
+vaR_dump((new ReflectionMethod('x', 'bar'))->getPrototype()->class);
+?>
+OK
+--EXPECT--
+string(1) "b"
+string(1) "a"
+OK