1 /* 2 * Copyright (c) 2008, 2009, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 /* 26 * @test 27 * @bug 6778657 28 * @summary Casts in SharedRuntime::f2i, f2l, d2i and d2l rely on undefined C++ behaviour 29 */ 30 31 public class Test { 32 public static void check_f2i(int expect) { 33 float check = expect; 34 check *= 2; 35 int actual = (int) check; 36 if (actual != expect) 37 throw new RuntimeException("expecting " + expect + ", got " + actual); 38 } 39 40 public static void check_f2l(long expect) { 41 float check = expect; 42 check *= 2; 43 long actual = (long) check; 44 if (actual != expect) 45 throw new RuntimeException("expecting " + expect + ", got " + actual); 46 } 47 48 public static void check_d2i(int expect) { 49 double check = expect; 50 check *= 2; 51 int actual = (int) check; 52 if (actual != expect) 53 throw new RuntimeException("expecting " + expect + ", got " + actual); 54 } 55 56 public static void check_d2l(long expect) { 57 double check = expect; 58 check *= 2; 59 long actual = (long) check; 60 if (actual != expect) 61 throw new RuntimeException("expecting " + expect + ", got " + actual); 62 } 63 64 public static void main(String[] args) { 65 check_f2i(Integer.MAX_VALUE); 66 check_f2i(Integer.MIN_VALUE); 67 check_f2l(Long.MAX_VALUE); 68 check_f2l(Long.MIN_VALUE); 69 check_d2i(Integer.MAX_VALUE); 70 check_d2i(Integer.MIN_VALUE); 71 check_d2l(Long.MAX_VALUE); 72 check_d2l(Long.MIN_VALUE); 73 } 74 } 75