/* * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ /** * JDK-8058610: must not let long operations overflow * * @test * @run */ function mul(x) { return x.foo * x.bar; } print("=== mul ===") print(mul({foo: 2147483647, bar: 2147483647})); // 2^31 print(mul({foo: 17179869184, bar: 2147483647})); // 2^34 function self_mul(x) { return x.foo *= x.bar; } print("=== self_mul ===") print(self_mul({foo: 2147483647, bar: 2147483647})); // 2^31 print(self_mul({foo: 17179869184, bar: 2147483647})); // 2^34 // We'll need to use this function to obtain long values larger in // magnitude than those precisely representable in a double (2^53), // as Nashorn's parser will reify such literals as a double. For // overflow on add and sub we need (2^63)-1. var parseLong = Java.type("java.lang.Long").parseLong; function sub(x) { return x.foo - x.bar; } print("=== sub ===") print(sub({foo: 2147483647, bar: -2147483647})); // 2^31 print(sub({foo: parseLong("9223372036854775807"), bar: parseLong("-9223372036854775807")})); // 2^63-1 function self_sub(x) { return x.foo -= x.bar; } print("=== self_sub ===") print(self_sub({foo: 2147483647, bar: -2147483647})); // 2^31 print(self_sub({foo: parseLong("9223372036854775807"), bar: parseLong("-9223372036854775807")})); // 2^63-1 function add(x) { return x.foo + x.bar; } print("=== add ===") print(add({foo: 2147483647, bar: 2147483647})); // 2^31 print(add({foo: parseLong("9223372036854775807"), bar: parseLong("9223372036854775807")})); // 2^63-1 function self_add(x) { return x.foo += x.bar; } print("=== self_add ===") print(self_add({foo: 2147483647, bar: 2147483647})); // 2^31 print(self_add({foo: parseLong("9223372036854775807"), bar: parseLong("9223372036854775807")})); // 2^63-1