Program: 71874
Project: 71874
Buggy source:
/** 
 * Returns a <tt>ThreadInfo</tt> object represented by the given <tt>CompositeData</tt>. The given <tt>CompositeData</tt> must contain the following attributes unless otherwise specified below: <blockquote> <table border> <tr> <th align=left>Attribute Name</th> <th align=left>Type</th> </tr> <tr> <td>threadId</td> <td><tt>java.lang.Long</tt></td> </tr> <tr> <td>threadName</td> <td><tt>java.lang.String</tt></td> </tr> <tr> <td>threadState</td> <td><tt>java.lang.String</tt></td> </tr> <tr> <td>suspended</td> <td><tt>java.lang.Boolean</tt></td> </tr> <tr> <td>inNative</td> <td><tt>java.lang.Boolean</tt></td> </tr> <tr> <td>blockedCount</td> <td><tt>java.lang.Long</tt></td> </tr> <tr> <td>blockedTime</td> <td><tt>java.lang.Long</tt></td> </tr> <tr> <td>waitedCount</td> <td><tt>java.lang.Long</tt></td> </tr> <tr> <td>waitedTime</td> <td><tt>java.lang.Long</tt></td> </tr> <tr> <td>lockInfo</td> <td><tt>javax.management.openmbean.CompositeData</tt> - the mapped type for   {@link LockInfo} as specified in the{@link LockInfo#from} method.<p> If <tt>cd</tt> does not contain this attribute, the <tt>LockInfo</tt> object will be constructed from the value of the <tt>lockName</tt> attribute. </td> </tr> <tr> <td>lockName</td> <td><tt>java.lang.String</tt></td> </tr> <tr> <td>lockOwnerId</td> <td><tt>java.lang.Long</tt></td> </tr> <tr> <td>lockOwnerName</td> <td><tt>java.lang.String</tt></td> </tr> <tr> <td><a name="StackTrace">stackTrace</a></td> <td><tt>javax.management.openmbean.CompositeData[]</tt> <p> Each element is a <tt>CompositeData</tt> representing StackTraceElement containing the following attributes: <blockquote> <table cellspacing=1 cellpadding=0> <tr> <th align=left>Attribute Name</th> <th align=left>Type</th> </tr> <tr> <td>className</td> <td><tt>java.lang.String</tt></td> </tr> <tr> <td>methodName</td> <td><tt>java.lang.String</tt></td> </tr> <tr> <td>fileName</td> <td><tt>java.lang.String</tt></td> </tr> <tr> <td>lineNumber</td> <td><tt>java.lang.Integer</tt></td> </tr> <tr> <td>nativeMethod</td> <td><tt>java.lang.Boolean</tt></td> </tr> </table> </blockquote> </td> </tr> <tr> <td>lockedMonitors</td> <td><tt>javax.management.openmbean.CompositeData[]</tt> whose element type is the mapped type for {@link MonitorInfo} as specified in the{@link MonitorInfo#from Monitor.from} method.<p> If <tt>cd</tt> does not contain this attribute, this attribute will be set to an empty array. </td> </tr> <tr> <td>lockedSynchronizers</td> <td><tt>javax.management.openmbean.CompositeData[]</tt> whose element type is the mapped type for {@link LockInfo} as specified in the {@link LockInfo#from} method.<p> If <tt>cd</tt> does not contain this attribute, this attribute will be set to an empty array. </td> </tr> </table> </blockquote>
 * @param cd <tt>CompositeData</tt> representing a <tt>ThreadInfo</tt>
 * @throws IllegalArgumentException if <tt>cd</tt> does notrepresent a <tt>ThreadInfo</tt> with the attributes described above.
 * @return a <tt>ThreadInfo</tt> object representedby <tt>cd</tt> if <tt>cd</tt> is not <tt>null</tt>; <tt>null</tt> otherwise.
 */
public static ThreadInfo from(CompositeData cd){
  if (cd == null) {
    return null;
  }
  if (cd instanceof ThreadInfoCompositeData) {
    return ((ThreadInfoCompositeData)cd).getThreadInfo();
  }
 else {
    return new ThreadInfo(cd);
  }
}

Fixed version (ground truth):
/** 
 * Returns a <tt>ThreadInfo</tt> object represented by the given <tt>CompositeData</tt>. The given <tt>CompositeData</tt> must contain the following attributes unless otherwise specified below: <blockquote> <table border summary="The attributes and their types the given CompositeData contains"> <tr> <th align=left>Attribute Name</th> <th align=left>Type</th> </tr> <tr> <td>threadId</td> <td><tt>java.lang.Long</tt></td> </tr> <tr> <td>threadName</td> <td><tt>java.lang.String</tt></td> </tr> <tr> <td>threadState</td> <td><tt>java.lang.String</tt></td> </tr> <tr> <td>suspended</td> <td><tt>java.lang.Boolean</tt></td> </tr> <tr> <td>inNative</td> <td><tt>java.lang.Boolean</tt></td> </tr> <tr> <td>blockedCount</td> <td><tt>java.lang.Long</tt></td> </tr> <tr> <td>blockedTime</td> <td><tt>java.lang.Long</tt></td> </tr> <tr> <td>waitedCount</td> <td><tt>java.lang.Long</tt></td> </tr> <tr> <td>waitedTime</td> <td><tt>java.lang.Long</tt></td> </tr> <tr> <td>lockInfo</td> <td><tt>javax.management.openmbean.CompositeData</tt> - the mapped type for   {@link LockInfo} as specified in the{@link LockInfo#from} method.<p> If <tt>cd</tt> does not contain this attribute, the <tt>LockInfo</tt> object will be constructed from the value of the <tt>lockName</tt> attribute. </td> </tr> <tr> <td>lockName</td> <td><tt>java.lang.String</tt></td> </tr> <tr> <td>lockOwnerId</td> <td><tt>java.lang.Long</tt></td> </tr> <tr> <td>lockOwnerName</td> <td><tt>java.lang.String</tt></td> </tr> <tr> <td><a name="StackTrace">stackTrace</a></td> <td><tt>javax.management.openmbean.CompositeData[]</tt> <p> Each element is a <tt>CompositeData</tt> representing StackTraceElement containing the following attributes: <blockquote> <table cellspacing=1 cellpadding=0 summary="The attributes and their types the given CompositeData contains"> <tr> <th align=left>Attribute Name</th> <th align=left>Type</th> </tr> <tr> <td>className</td> <td><tt>java.lang.String</tt></td> </tr> <tr> <td>methodName</td> <td><tt>java.lang.String</tt></td> </tr> <tr> <td>fileName</td> <td><tt>java.lang.String</tt></td> </tr> <tr> <td>lineNumber</td> <td><tt>java.lang.Integer</tt></td> </tr> <tr> <td>nativeMethod</td> <td><tt>java.lang.Boolean</tt></td> </tr> </table> </blockquote> </td> </tr> <tr> <td>lockedMonitors</td> <td><tt>javax.management.openmbean.CompositeData[]</tt> whose element type is the mapped type for {@link MonitorInfo} as specified in the{@link MonitorInfo#from Monitor.from} method.<p> If <tt>cd</tt> does not contain this attribute, this attribute will be set to an empty array. </td> </tr> <tr> <td>lockedSynchronizers</td> <td><tt>javax.management.openmbean.CompositeData[]</tt> whose element type is the mapped type for {@link LockInfo} as specified in the {@link LockInfo#from} method.<p> If <tt>cd</tt> does not contain this attribute, this attribute will be set to an empty array. </td> </tr> </table> </blockquote>
 * @param cd <tt>CompositeData</tt> representing a <tt>ThreadInfo</tt>
 * @throws IllegalArgumentException if <tt>cd</tt> does notrepresent a <tt>ThreadInfo</tt> with the attributes described above.
 * @return a <tt>ThreadInfo</tt> object representedby <tt>cd</tt> if <tt>cd</tt> is not <tt>null</tt>; <tt>null</tt> otherwise.
 */
public static ThreadInfo from(CompositeData cd){
  if (cd == null) {
    return null;
  }
  if (cd instanceof ThreadInfoCompositeData) {
    return ((ThreadInfoCompositeData)cd).getThreadInfo();
  }
 else {
    return new ThreadInfo(cd);
  }
}