Mercurial > hg > truffle
view test/compiler/6877254/Test.java @ 1593:2458a1f25356
6953058: G1: A bigapp crashes with SIGSEGV in compiled code
Summary: In C2's G1 post write barrier, the loads of the buffer and index fields from the DirtyCardQueue structure may be moved across a safepoint. Use the current value of "control" in the C2 IR to limit how far these loads can move.
Reviewed-by: never, iveresov, kvn
author | johnc |
---|---|
date | Mon, 07 Jun 2010 17:46:04 -0700 |
parents | 648fe315b257 |
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 6877254 * @summary Implement StoreCMNode::Ideal to promote its OopStore above the MergeMem * * @run main/othervm -Xcomp Test */ public class Test { static byte var_1; static String var_2 = ""; static byte var_3; static float var_4 = 0; public static void main(String[] args) { int i = 0; for (String var_tmp = var_2; i < 11; var_1 = 0, i++) { var_2 = var_2; var_4 *= (var_4 *= (var_3 = 0)); } System.out.println("var_1 = " + var_1); System.out.println("var_2 = " + var_2); System.out.println("var_3 = " + var_3); System.out.println("var_4 = " + var_4); } }