Mercurial > hg > truffle
diff test/compiler/6859338/Test6859338.java @ 848:fe95187e8882
6859338: amd64 native unverified entry point pushes values before implicit null check
Reviewed-by: kvn, twisti
author | never |
---|---|
date | Mon, 13 Jul 2009 14:58:17 -0700 |
parents | |
children | c18cbe5936b8 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/test/compiler/6859338/Test6859338.java Mon Jul 13 14:58:17 2009 -0700 @@ -0,0 +1,51 @@ +/* + * 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 6859338 + * @summary Assertion failure in sharedRuntime.cpp + * + * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-InlineObjectHash -Xbatch -XX:-ProfileInterpreter Test6859338 + */ + +public class Test6859338 { + static Object[] o = new Object[] { new Object(), null }; + public static void main(String[] args) { + int total = 0; + try { + // Exercise the implicit null check in the unverified entry point + for (int i = 0; i < 40000; i++) { + int limit = o.length; + if (i < 20000) limit = 1; + for (int j = 0; j < limit; j++) { + total += o[j].hashCode(); + } + } + + } catch (NullPointerException e) { + // this is expected. A true failure causes a crash + } + } +}