Program: 68008
Project: 68008
Buggy source:
/** 
 * INTERNAL: Return a valid Java class name or method name for a given string
 * @param s
 * @param isClass (flag whether called from a method context)
 * @param flag
 * @return
 */
public static String className(String s,boolean flag,boolean isClass,boolean logOn){
  preProcessJavaReservedNames(s);
  preProcessSDOReservedNames(s);
  String[] as=getWordList(s);
  StringBuffer stringbuffer=new StringBuffer();
  StringBuffer stringbuffer1=new StringBuffer();
  if (as.length == 0) {
    return stringbuffer.toString();
  }
  for (int i=0; i < as.length; i++) {
    char[] ac=as[i].toCharArray();
    if (Character.isLowerCase(ac[0])) {
      ac[0]=Character.toUpperCase(ac[0]);
    }
    for (int j=0; j < ac.length; j++) {
      if ((ac[j] >= ' ') && (ac[j] < '\177')) {
        if ((ac[j] != '_') || !asWordSeparator) {
          stringbuffer.append(ac[j]);
        }
        continue;
      }
      if (flag) {
        stringbuffer.append(escapeUnicode(stringbuffer1,ac[j]));
      }
 else {
        stringbuffer.append(ac[j]);
      }
    }
  }
  String normalizedName=stringbuffer.toString();
  if (!s.equals(normalizedName) && logOn) {
    int logLevel;
    if (!s.equalsIgnoreCase(normalizedName)) {
      logLevel=AbstractSessionLog.WARNING;
    }
 else {
      logLevel=AbstractSessionLog.FINER;
    }
    if (isClass) {
      AbstractSessionLog.getLog().log(logLevel,"String_Node_Str",new Object[]{"String_Node_Str",s,normalizedName});
    }
 else {
      AbstractSessionLog.getLog().log(logLevel,"String_Node_Str",new Object[]{"String_Node_Str",s,normalizedName});
    }
  }
  return normalizedName;
}

Fixed version (ground truth):
/** 
 * INTERNAL: Return a valid Java class name or method name for a given string
 * @param s
 * @param isClass (flag whether called from a method context)
 * @param flag
 * @return
 */
public static String className(String s,boolean flag,boolean isClass,boolean logOn){
  preProcessJavaReservedNames(s);
  preProcessSDOReservedNames(s);
  String[] as=getWordList(s);
  StringBuffer stringbuffer=new StringBuffer();
  StringBuffer stringbuffer1=new StringBuffer();
  if (as.length == 0) {
    return stringbuffer.toString();
  }
  for (int i=0; i < as.length; i++) {
    char[] ac=as[i].toCharArray();
    if (Character.isLowerCase(ac[0])) {
      ac[0]=Character.toUpperCase(ac[0]);
    }
    for (int j=0; j < ac.length; j++) {
      if ((ac[j] >= ' ') && (ac[j] < '\177')) {
        if ((ac[j] != '_') || !asWordSeparator) {
          stringbuffer.append(ac[j]);
        }
        continue;
      }
      if (flag) {
        stringbuffer.append(escapeUnicode(stringbuffer1,ac[j]));
      }
 else {
        stringbuffer.append(ac[j]);
      }
    }
  }
  String normalizedName=stringbuffer.toString();
  if (!s.equals(normalizedName) && logOn) {
    int logLevel;
    if (!s.equalsIgnoreCase(normalizedName)) {
      logLevel=AbstractSessionLog.INFO;
    }
 else {
      logLevel=AbstractSessionLog.FINER;
    }
    if (isClass) {
      AbstractSessionLog.getLog().log(logLevel,"String_Node_Str",new Object[]{"String_Node_Str",s,normalizedName});
    }
 else {
      AbstractSessionLog.getLog().log(logLevel,"String_Node_Str",new Object[]{"String_Node_Str",s,normalizedName});
    }
  }
  return normalizedName;
}