Mercurial > hg > truffle
view test/compiler/7009359/Test7009359.java @ 3983:811ec3d0833b
7097053: G1: assert(da ? referent->is_oop() : referent->is_oop_or_null()) failed: referenceProcessor.cpp:1054
Summary: During remembered set scanning, the reference processor could discover a reference object whose referent was in the process of being copied and so may not be completely initialized. Do not perform reference discovery during remembered set scanning.
Reviewed-by: tonyp, ysr
author | johnc |
---|---|
date | Mon, 03 Oct 2011 12:49:53 -0700 |
parents | 2ddb2fab82cb |
children | c703f9c4b025 |
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/* * Copyright (c) 2010, 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 7009359 * @summary HS with -XX:+AggressiveOpts optimize new StringBuffer(null) so it does not throw NPE as expected * * @run main/othervm -Xbatch -XX:+IgnoreUnrecognizedVMOptions -XX:+OptimizeStringConcat -XX:CompileCommand=exclude,Test7009359,main Test7009359 * */ public class Test7009359 { public static void main (String[] args) { for(int i = 0; i < 1000000; i++) { if(!stringmakerBUG(null).equals("NPE")) { System.out.println("StringBuffer(null) does not throw NPE"); System.exit(97); } } } public static String stringmakerBUG(String str) { try { return new StringBuffer(str).toString(); } catch (NullPointerException e) { return "NPE"; } } }