Fix handling of property accessors in loop condition expressions and in argument of with statement.

Related issue: #798

JerryScript-DCO-1.0-Signed-off-by: Ruben Ayrapetyan r.ayrapetyan@samsung.com

tests/jerry/for.js

@@ -76,3 +76,9 @@ var i = {x: 0};
 }
 
 assert (s === '01');
+
+// 7.
+a = [];
+for (; a[0]; ) {
+  assert (false);
+}

tests/jerry/regression-test-issue-798.js

@@ -0,0 +1,38 @@
+// Copyright 2016 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 a = {}, b = 0;
+
+while (a[b]) {
+  assert (false);
+}
+
+for ( ; a[b]; ) {
+  assert (false);
+}
+
+var flag = false;
+do
+{
+  assert (!flag);
+  flag = true;
+} while (a[b]);
+
+a = { };
+a.b = { c : 1 };
+
+with (a.b)
+{
+  assert (c === 1);
+}