Program: 80139
Project: 80139
Buggy source:
/** 
 * Make sure that the character in val matches the character in pat. If we are dealing with UCS_BASIC character string (ie collator is null) then we can just do simple character equality check. But if we are dealing with territory based character string type, then we need to  convert the character in val and pat into it's collation element(s) and then do collation element equality comparison.
 * @param val value to compare.
 * @param vLoc character position in val.
 * @param pat pattern to look for in val.
 * @param pLoc character position in pat.
 * @param collator null if we are dealing with UCS_BASIC character stringtypes. If not null, then we use it to get collation elements for  character in val and pat to do the equality comparison.
 * @return
 */
private static boolean checkEquality(char[] val,int vLoc,char[] pat,int pLoc,RuleBasedCollator collator){
  CollationElementIterator patternIterator;
  int curCollationElementInPattern;
  CollationElementIterator valueIterator;
  int curCollationElementInValue;
  if (collator == null) {
    if (val[vLoc] == pat[pLoc])     return true;
 else     return false;
  }
 else {
    patternIterator=collator.getCollationElementIterator(new String(pat,pLoc,1));
    valueIterator=collator.getCollationElementIterator(new String(val,vLoc,1));
    curCollationElementInPattern=patternIterator.next();
    curCollationElementInValue=valueIterator.next();
    while (curCollationElementInPattern == curCollationElementInValue) {
      if (curCollationElementInPattern == CollationElementIterator.NULLORDER)       break;
      curCollationElementInPattern=patternIterator.next();
      curCollationElementInValue=valueIterator.next();
    }
    if (curCollationElementInPattern != curCollationElementInValue)     return false;
 else     return true;
  }
}

Fixed version (ground truth):
/** 
 * Make sure that the character in val matches the character in pat. If we are dealing with UCS_BASIC character string (ie collator is null) then we can just do simple character equality check. But if we are dealing with territory based character string type, then we need to  convert the character in val and pat into it's collation element(s) and then do collation element equality comparison.
 * @param val value to compare.
 * @param vLoc character position in val.
 * @param pat pattern to look for in val.
 * @param pLoc character position in pat.
 * @param collator null if we are dealing with UCS_BASIC character stringtypes. If not null, then we use it to get collation elements for  character in val and pat to do the equality comparison.
 * @return TRUE if the character in val and vLoc match based on straightequality or collation element based equality. Otherwise we will  return FALSE.
 */
private static boolean checkEquality(char[] val,int vLoc,char[] pat,int pLoc,RuleBasedCollator collator){
  CollationElementIterator patternIterator;
  int curCollationElementInPattern;
  CollationElementIterator valueIterator;
  int curCollationElementInValue;
  if (collator == null) {
    if (val[vLoc] == pat[pLoc])     return true;
 else     return false;
  }
 else {
    patternIterator=collator.getCollationElementIterator(new String(pat,pLoc,1));
    valueIterator=collator.getCollationElementIterator(new String(val,vLoc,1));
    curCollationElementInPattern=patternIterator.next();
    curCollationElementInValue=valueIterator.next();
    while (curCollationElementInPattern == curCollationElementInValue) {
      if (curCollationElementInPattern == CollationElementIterator.NULLORDER)       break;
      curCollationElementInPattern=patternIterator.next();
      curCollationElementInValue=valueIterator.next();
    }
    if (curCollationElementInPattern != curCollationElementInValue)     return false;
 else     return true;
  }
}