05459df0c7
Use the compilation-local seed in 'StressLCM' and 'StressGCM' rather than the global one. As a consequence, these options use by default a fresh seed in every compilation, unless 'StressSeed=N' is specified, in which case they behave deterministically. Annotate tests that use 'StressLCM' and 'StressGCM' with the 'stress' and 'randomness' keys to reflect this change in default behavior. Reviewed-by: kvn, thartmann
59 lines
2.1 KiB
Java
59 lines
2.1 KiB
Java
/*
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* Copyright (c) 2017, Red Hat, Inc. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* @test
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* @key stress randomness
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* @bug 8182036
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* @summary Load from initializing arraycopy uses wrong memory state
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*
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* @run main/othervm -XX:-BackgroundCompilation -XX:-UseOnStackReplacement -XX:+UnlockDiagnosticVMOptions -XX:+IgnoreUnrecognizedVMOptions -XX:+StressGCM -XX:+StressLCM TestInitializingACLoadWithBadMem
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*
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*/
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import java.util.Arrays;
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public class TestInitializingACLoadWithBadMem {
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static Object test_dummy;
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static int test1() {
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int[] src = new int[10];
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test_dummy = src;
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int[] dst = new int[10];
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src[1] = 0x42;
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// arraycopy generates a load from src/store to dst which must
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// be after the store to src above.
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System.arraycopy(src, 1, dst, 1, 9);
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return dst[1];
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}
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static public void main(String[] args) {
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int[] src = new int[10];
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for (int i = 0; i < 20000; i++) {
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int res = test1();
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if (res != 0x42) {
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throw new RuntimeException("bad result: " + res + " != " + 0x42);
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}
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}
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}
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}
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