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/*
* Copyright 2012 Skip Balk. 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 7179138 8271341
* @summary Incorrect result with String concatenation optimization
*
* @run main/othervm -Xbatch -XX:+IgnoreUnrecognizedVMOptions -XX:-TieredCompilation
* compiler.c2.Test7179138_1
* @run main/othervm -Xbatch -XX:+IgnoreUnrecognizedVMOptions -XX:-TieredCompilation
* -XX:+UnlockDiagnosticVMOptions -XX:+StressIGVN compiler.c2.Test7179138_1
*
* @author Skip Balk
*/
package compiler.c2;
public class Test7179138_1 {
public static void main(String[] args) throws Exception {
System.out.println("Java Version: " + System.getProperty("java.vm.version"));
long[] durations = new long[60];
for (int i = 0; i < 100000; i++) {
// this empty for-loop is required to reproduce this bug
for (long duration : durations) {
// do nothing
}
{
String s = "test";
int len = s.length();
s = new StringBuilder(String.valueOf(s)).append(s).toString();
len = len + len;
s = new StringBuilder(String.valueOf(s)).append(s).toString();
len = len + len;
s = new StringBuilder(String.valueOf(s)).append(s).toString();
len = len + len;
if (s.length() != len) {
System.out.println("Failed at iteration: " + i);
System.out.println("Length mismatch: " + s.length() + " <> " + len);
System.out.println("Expected: \"" + "test" + "test" + "test" + "test" + "test" + "test" + "test" + "test" + "\"");
System.out.println("Actual: \"" + s + "\"");
System.exit(97);
}
}
}
}
}
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