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/*
* Copyright (c) 2015, 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 8142303
* @summary Tests handling of invalid array indices in C2 intrinsic if explicit range check in Java code is not inlined.
*
* @run main/othervm
* -XX:CompileCommand=inline,java.lang.String::*
* -XX:CompileCommand=inline,java.lang.StringUTF16::*
* -XX:CompileCommand=exclude,java.lang.String::checkBoundsOffCount
* compiler.intrinsics.string.TestStringConstruction
*/
package compiler.intrinsics.string;
public class TestStringConstruction {
public static void main(String[] args) {
char[] chars = new char[42];
for (int i = 0; i < 10_000; ++i) {
test(chars);
}
}
private static String test(char[] chars) {
try {
// The constructor calls String::checkBoundsOffCount(-1, 42) to perform
// range checks on offset and count. If this method is not inlined, C2
// does not know about the explicit range checks and does not cut off the
// dead code. As a result, -1 is fed as offset into the StringUTF16.compress
// intrinsic which is replaced by TOP and causes a failure in the matcher.
return new String(chars, -1 , 42);
} catch (Exception e) {
return "";
}
}
}
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