Fix [[HasInstance]] operation for external functions

Related issue: #736

JerryScript-DCO-1.0-Signed-off-by: Hanjoung Lee hanjoung.lee@samsung.com

tests/jerry/regression-test-issue-736.js

@@ -0,0 +1,39 @@
+// Copyright 2015 Samsung Electronics Co., Ltd.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+var code = 'try\n\
+{\n\
+  print({toStSing:!function() { throw new TypeError("foo"); }}, []);t (false);\n\
+}\n\
+catch (e)\n\
+{\n\
+  assert*(e instanceof\n\
+  assert );\n\
+  asstrt (e.a%e === "foo");\n\
+}';
+
+try {
+  eval(code);
+  assert(false);
+} catch(e) {
+  assert(e instanceof TypeError);
+}
+
+try {
+  eval("var x; x instanceof assert;");
+  assert(false);
+} catch(e) {
+  assert(e instanceof TypeError);
+}
+