BigDecimal.longValueExact() method throws NullpointerException with 6u14-b01 build.
Following testcase could be used to reproduce the issue.

<Code>

import java.math.BigDecimal;
class BigDecimalTest
{
 public static void main(String... args){
        try {
			  String longValue = "9223372036854775807.0";
              BigDecimal bd = new BigDecimal(longValue);
              long longvalue= bd.longValue();
              long longValueExact = bd.longValueExact();
              System.out.println("Test passed ");
        } catch(ArithmeticException e) {             
			 System.out.println("Test failed ");
             e.printStackTrace();
        }

    }
}

</Code>

<Output>
Exception in thread "main" java.lang.NullPointerException
        at java.math.BigDecimal$LongOverflow.check(BigDecimal.java:2974)
        at java.math.BigDecimal.longValueExact(BigDecimal.java:2962)
        at BigDecimalTest.main(BigDecimalTest.java:9)

</Output>

java version "1.6.0_14"
Java(TM) SE Runtime Environment (build 1.6.0_14-b01)
Java HotSpot(TM) Client VM (build 11.2-b01, mixed mode)


This test passes with the 6u12-b04 promoted build. Fix for the bug 6622432 may have caused this regression.