/*
* Copyright ( c ) 2011 , 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 6956668
* @ summary misbehavior of XOR operator ( ^ ) with int
*
* @ run main / othervm - Xbatch compiler . c2 . Test6956668
*/
package compiler.c2;
public class Test6956668 {
public static int bitTest() {
int result = 0 ;
int testValue = 73 ;
int bitCount = Integer.bitCount(testValue);
if (testValue != 0 ) {
int gap = Long .numberOfTrailingZeros(testValue);
testValue >>>= gap;
while (testValue != 0 ) {
result++;
if ((testValue ^= 0 x1) != 0 ) {
gap = Long .numberOfTrailingZeros(testValue);
testValue >>>= gap;
}
}
}
if (bitCount != result) {
System.out.println("ERROR: " + bitCount + " != " + result);
System.exit(97 );
}
return (result);
}
public static void main(String[] args) {
for (int i = 0 ; i < 100000 ; i++) {
int ct = bitTest();
}
}
}
Messung V0.5 in Prozent C=95 H=89 G=91
¤ Dauer der Verarbeitung: 0.7 Sekunden
(vorverarbeitet am 2026-06-10)
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