Add test for bug 76451

Author: morrisonlevi

Zend/tests/bug76451.inc

@@ -0,0 +1,4 @@
+<?php
+
+class Foo {}
+class_alias('Foo', 'Bar');

Zend/tests/bug76451.phpt

@@ -0,0 +1,20 @@
+--TEST--
+Aliases during inheritance type checks affected by opcache
+--INI--
+opcache.enable=1
+opcache.enable_cli=1
+opcache.optimization_level=-1
+--SKIPIF--
+<?php if (!extension_loaded('Zend OPcache') || php_sapi_name() != "cli") die("skip CLI only"); ?>
+--FILE--
+<?php
+require __DIR__ . "/bug76451.inc";
+
+class A {
+  public function test(Foo $foo) {}
+}
+class B extends A {
+  public function test(Bar $foo) {}
+}
+?>
+--EXPECT--