128 lines
3.2 KiB
Java
128 lines
3.2 KiB
Java
/*
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* Copyright (c) 2009, Oracle and/or its affiliates. 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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* @bug 6851282
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* @summary JIT miscompilation results in null entry in array when using CompressedOops
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*
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* @run main/othervm/timeout=600 -Xmx256m -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops
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* compiler.c2.Test6851282
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*/
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package compiler.c2;
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import java.util.ArrayList;
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import java.util.List;
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public class Test6851282 {
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void foo(A a, A[] as) {
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for (A a1 : as) {
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B[] filtered = a.c(a1);
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for (B b : filtered) {
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if (b == null) {
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System.out.println("bug: b == null");
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System.exit(97);
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}
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}
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}
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}
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public static void main(String[] args) {
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List<A> as = new ArrayList<A>();
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for (int i = 0; i < 5000; i++) {
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List<B> bs = new ArrayList<B>();
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for (int j = i; j < i + 1000; j++)
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bs.add(new B(j));
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as.add(new A(bs.toArray(new B[0])));
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}
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new Test6851282().foo(as.get(0), as.subList(1, as.size()).toArray(new A[0]));
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}
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static class A {
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final B[] bs;
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public A(B[] bs) {
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this.bs = bs;
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}
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final B[] c(final A a) {
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return new BoxedArray<B>(bs).filter(new Function<B, Boolean>() {
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public Boolean apply(B arg) {
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for (B b : a.bs) {
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if (b.d == arg.d)
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return true;
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}
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return false;
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}
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});
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}
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}
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static class BoxedArray<T> {
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private final T[] array;
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BoxedArray(T[] array) {
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this.array = array;
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}
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public T[] filter(Function<T, Boolean> function) {
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boolean[] include = new boolean[array.length];
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int len = 0;
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int i = 0;
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while (i < array.length) {
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if (function.apply(array[i])) {
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include[i] = true;
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len += 1;
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}
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i += 1;
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}
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T[] result = (T[]) java.lang.reflect.Array.newInstance(array.getClass().getComponentType(), len);
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len = 0;
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i = 0;
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while (len < result.length) {
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if (include[i]) {
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result[len] = array[i];
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len += 1;
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}
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i += 1;
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}
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return result;
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}
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}
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static interface Function<T, R> {
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R apply(T arg);
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}
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static class B {
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final int d;
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public B(int d) {
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this.d = d;
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}
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}
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}
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