Mercurial > hg > truffle
view test/compiler/6855164/Test.java @ 4092:b5a5f30c483d
7110173: GCNotifier::pushNotification publishes stale data.
Summary: GCNotifier::pushNotification() references GCMemoryManager::_last_gc_stat but is called from GCMemoryManager::gc_end() before GCMemoryManager::_last_gc_stat is set up using the values in GCMemoryManager::_current_gc_stat. As a result the GC notification code accesses unitialized or stale data. Move the notification call after GCMemoryManager::_las_gc_stat is set, but inside the same if-block.
Reviewed-by: poonam, dholmes, fparain, mchung
author | johnc |
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date | Mon, 21 Nov 2011 09:24:56 -0800 |
parents | c18cbe5936b8 |
children |
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/* * Copyright (c) 2009, 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 6855164 * @summary SIGSEGV during compilation of method involving loop over CharSequence * @run main/othervm -Xbatch Test */ public class Test{ public static void main(String[] args) throws Exception { StringBuffer builder = new StringBuffer(); for(int i = 0; i < 100; i++) builder.append("I am the very model of a modern major general\n"); for(int j = 0; j < builder.length(); j++){ previousSpaceIndex(builder, j); } } private static final int previousSpaceIndex(CharSequence sb, int seek) { seek--; while (seek > 0) { if (sb.charAt(seek) == ' ') { while (seek > 0 && sb.charAt(seek - 1) == ' ') seek--; return seek; } seek--; } return 0; } }