Fix Array.prototype.push() and unshift() in case result length is larger than UINT_MAX

JerryScript-DCO-1.0-Signed-off-by: Dániel Bátyai dbatyai.u-szeged@partner.samsung.com

tests/jerry/array-prototype-push.js

@@ -0,0 +1,75 @@
+// Copyright 2015 Samsung Electronics Co., Ltd.
+// Copyright 2015 University of Szeged.
+//
+// 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 len;
+var d = [];
+assert (d.length === 0);
+len = d.push();
+assert (d.length === 0);
+assert (d.length === len);
+len = d.push(1);
+assert (d.length === 1);
+assert (d.length === len);
+len = d.push(2);
+assert (d.length === 2);
+assert (d.length === len);
+len = d.push('a');
+assert (d.length === 3);
+assert (d.length === len);
+len = d.push('b', 'c', 3);
+assert (d.length == 6);
+assert (d.length === len);
+assert (d[0] === 1);
+assert (d[1] === 2);
+assert (d[2] === 'a');
+assert (d[3] === 'b');
+assert (d[4] === 'c');
+assert (d[5] === 3);
+
+var a = [];
+a.length = 4294967294;
+assert(a.push("x") === 4294967295);
+assert(a.length === 4294967295);
+assert(a[4294967294] === "x");
+
+try {
+	a.push("y");
+	assert(false);
+} catch (e) {
+	assert (e instanceof RangeError);
+}
+assert(a.length === 4294967295)
+
+
+var o = { length : 4294967294, push : Array.prototype.push };
+assert(o.push("x") === 4294967295);
+assert(o.length === 4294967295);
+assert(o[4294967294] === "x");
+
+try {
+	assert(o.push("y") === 4294967296);
+} catch (e) {
+	assert(false);
+}
+assert(o.length === 4294967296);
+assert(o[4294967295] === "y");
+
+try {
+	assert(o.push("z") === 1);
+} catch (e) {
+	assert(false);
+}
+assert(o.length === 1);
+assert(o[0] === "z");