Create temporary HandleScope while reading properties

tests/function_passback2.phpt

@@ -0,0 +1,28 @@
+--TEST--
+Test V8::executeString() : Call passed-back function (property access)
+--SKIPIF--
+<?php require_once(dirname(__FILE__) . '/skipif.inc'); ?>
+--FILE--
+<?php
+
+$v8 = new V8Js();
+
+$JS = <<< EOT
+(function(exports) {
+  // begin module code
+  exports.hello = function() { return 'hello'; };
+  // end module code
+  return exports;
+})({})
+EOT;
+
+$exports = $v8->executeString($JS, 'basic.js');
+$v8->func = $exports->hello;
+
+echo $v8->executeString('PHP.func();')."\n";
+
+?>
+===EOF===
+--EXPECT--
+hello
+===EOF===

v8js.cc

@@ -118,6 +118,12 @@ static zval *php_v8js_v8_read_property(zval *object, zval *member, int type ZEND
 
 	if (Z_TYPE_P(member) == IS_STRING && obj->v8obj->IsObject() && !obj->v8obj->IsFunction())
 	{
+		v8::Locker locker(obj->isolate);
+		v8::Isolate::Scope isolate_scope(obj->isolate);
+		v8::HandleScope local_scope(obj->isolate);
+		v8::Local<v8::Context> temp_context = v8::Context::New(obj->isolate);
+		v8::Context::Scope temp_scope(temp_context);
+
 		v8::Local<v8::Object> jsObj = obj->v8obj->ToObject();
 		v8::Local<v8::String> jsKey = V8JS_STRL(Z_STRVAL_P(member), Z_STRLEN_P(member));
 		v8::Local<v8::Value> jsVal;