--- /dev/null 2017-11-09 09:12:38.465827120 +0100 +++ new/test/hotspot/jtreg/compiler/intrinsics/mathexact/LongMulOverflowTest.java 2018-01-16 14:03:24.120725732 +0100 @@ -0,0 +1,64 @@ +/* + * Copyright (c) 2018, 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. + */ + +/* + * @test + * @bug 8191915 + * @summary Regression test for multiplyExact intrinsic + * @library /test/lib / + * @modules java.base/jdk.internal.misc + * java.management + * + * @run main/othervm -Xcomp -XX:-TieredCompilation compiler.intrinsics.mathexact.LongMulOverflowTest + */ + +package compiler.intrinsics.mathexact; + +public class LongMulOverflowTest { + public static void main(String[] args) { + LongMulOverflowTest test = new LongMulOverflowTest(); + for (int i = 0; i < 10; ++i) { + try { + test.runTest(); + throw new RuntimeException("Error, runTest() did not overflow!"); + } catch (ArithmeticException e) { + // success + } + + try { + test.runTestOverflow(); + throw new RuntimeException("Error, runTestOverflow() did not overflow!"); + } catch (ArithmeticException e) { + // success + } + } + } + + public void runTest() { + java.lang.Math.multiplyExact(Long.MIN_VALUE, 7); + } + + public void runTestOverflow() { + java.lang.Math.multiplyExact((Long.MAX_VALUE / 2) + 1, 2); + } +}