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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
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*
* 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 ) .
*
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* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
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/* @test
* @ bug 8163518
* @ summary Integer overflow when reading in large buffer
* @ requires ( sun . arch . data . model = = " 64 " & os . maxMemory > 8 g )
* @ run main / othervm - Xmx8g OverflowInRead
*/
import java.io.CharArrayReader;
public class OverflowInRead {
public static void main(String[] args) throws Exception {
char [] a = "_123456789_123456789_123456789_123456789"
.toCharArray(); // a.length > 33
try (CharArrayReader car = new CharArrayReader(a)) {
int len1 = 33 ;
char [] buf1 = new char [len1];
if (car.read(buf1, 0 , len1) != len1)
throw new Exception("Expected to read " + len1 + " chars" );
int len2 = Integer.MAX_VALUE - 32 ;
char [] buf2 = new char [len2];
int expLen2 = a.length - len1;
if (car.read(buf2, 0 , len2) != expLen2)
throw new Exception("Expected to read " + expLen2 + " chars" );
}
}
}
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