Mercurial > hg > graal-compiler
view test/compiler/6851282/Test.java @ 1087:23b9a8d315fc
6902701: G1: protect debugging code related to 6898948 with a debug flag
Summary: Protected stats dump with a new develop flag; other than for the dump, reconciled product and non-product behaviour in face of the error.
Reviewed-by: tonyp
author | ysr |
---|---|
date | Thu, 19 Nov 2009 10:19:19 -0800 |
parents | 2b9164d13ce9 |
children | c18cbe5936b8 |
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/* * Copyright 2009 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ /** * @test * @bug 6851282 * @summary JIT miscompilation results in null entry in array when using CompressedOops * * @run main/othervm/timeout=600 -Xmx256m -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops Test */ import java.util.ArrayList; import java.util.List; public class Test { void foo(A a, A[] as) { for (A a1 : as) { B[] filtered = a.c(a1); for (B b : filtered) { if (b == null) { System.out.println("bug: b == null"); System.exit(97); } } } } public static void main(String[] args) { List<A> as = new ArrayList<A>(); for (int i = 0; i < 5000; i++) { List<B> bs = new ArrayList<B>(); for (int j = i; j < i + 1000; j++) bs.add(new B(j)); as.add(new A(bs.toArray(new B[0]))); } new Test().foo(as.get(0), as.subList(1, as.size()).toArray(new A[0])); } } class A { final B[] bs; public A(B[] bs) { this.bs = bs; } final B[] c(final A a) { return new BoxedArray<B>(bs).filter(new Function<B, Boolean>() { public Boolean apply(B arg) { for (B b : a.bs) { if (b.d == arg.d) return true; } return false; } }); } } class BoxedArray<T> { private final T[] array; BoxedArray(T[] array) { this.array = array; } public T[] filter(Function<T, Boolean> function) { boolean[] include = new boolean[array.length]; int len = 0; int i = 0; while (i < array.length) { if (function.apply(array[i])) { include[i] = true; len += 1; } i += 1; } T[] result = (T[]) java.lang.reflect.Array.newInstance(array.getClass().getComponentType(), len); len = 0; i = 0; while (len < result.length) { if (include[i]) { result[len] = array[i]; len += 1; } i += 1; } return result; } } interface Function<T, R> { R apply(T arg); } class B { final int d; public B(int d) { this.d = d; } }