Mercurial > hg > graal-compiler
view test/compiler/6935535/Test.java @ 2320:41d4973cf100
6942326: x86 code in string_indexof() could read beyond reserved heap space
Summary: copy small (<8) strings on stack if str+16 crosses a page boundary and load from stack into XMM. Back up pointer when loading string's tail.
Reviewed-by: never
author | kvn |
---|---|
date | Sat, 26 Feb 2011 12:10:54 -0800 |
parents | c18cbe5936b8 |
children |
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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 6935535 * @summary String.indexOf() returns incorrect result on x86 with SSE4.2 * * @run main/othervm -Xcomp Test */ public class Test { static int IndexOfTest(String str) { return str.indexOf("1111111111111xx1x"); } public static void main(String args[]) { String str = "1111111111111xx1111111111111xx1x"; str = str.substring(0, 31); int idx = IndexOfTest(str); System.out.println("IndexOf(" + "1111111111111xx1x" + ") = " + idx + " in " + str); if (idx != -1) { System.exit(97); } } }