1 /*

     2  * Copyright (c) 2018, 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  * @test

    26  * @bug 8191915

    27  * @summary Regression test for multiplyExact intrinsic

    28  * @library /test/lib /

    29  * @modules java.base/jdk.internal.misc

    30  *          java.management

    31  *

    32  * @run main/othervm -Xcomp -XX:-TieredCompilation compiler.intrinsics.mathexact.LongMulOverflowTest

    33  */

    34 

    35 package compiler.intrinsics.mathexact;

    36 

    37 public class LongMulOverflowTest {

    38     public static void main(String[] args) {

    39         LongMulOverflowTest test = new LongMulOverflowTest();

    40         for (int i = 0; i < 10; ++i) {

    41             try {

    42                 test.runTest();

    43                 throw new RuntimeException("Error, runTest() did not overflow!");

    44             } catch (ArithmeticException e) {

    45                 // success

    46             }

    47 

    48             try {

    49                 test.runTestOverflow();

    50                 throw new RuntimeException("Error, runTestOverflow() did not overflow!");

    51             } catch (ArithmeticException e) {

    52                 // success

    53             }

    54         }

    55     }

    56 

    57     public void runTest() {

    58         java.lang.Math.multiplyExact(Long.MIN_VALUE, 7);

    59     }

    60 

    61     public void runTestOverflow() {

    62       java.lang.Math.multiplyExact((Long.MAX_VALUE / 2) + 1, 2);

    63     }

    64 }