Program: 163225
Project: 163225
Buggy source:
private TextParsingException handleException(Throwable ex){
  if (ex instanceof DataProcessingException) {
    DataProcessingException error=(DataProcessingException)ex;
    error.restrictContent(errorContentLength);
    error.setContext(this.context);
    throw error;
  }
  String message=ex.getClass().getName() + "String_Node_Str" + ex.getMessage();
  char[] chars=output.appender.getChars();
  if (chars != null) {
    int length=output.appender.length();
    if (length > chars.length) {
      message="String_Node_Str" + length + "String_Node_Str"+ "String_Node_Str"+ settings.getMaxCharsPerColumn()+ "String_Node_Str";
      length=chars.length;
    }
    String tmp=new String(chars);
    if (tmp.contains("String_Node_Str") || tmp.contains("String_Node_Str")) {
      tmp=displayLineSeparators(tmp,true);
      String lineSeparator=displayLineSeparators(settings.getFormat().getLineSeparatorString(),false);
      message+="String_Node_Str" + "String_Node_Str" + lineSeparator + "String_Node_Str"+ getParsedContent(tmp);
    }
    int nullCharacterCount=0;
    int maxLength=length > Integer.MAX_VALUE / 2 ? Integer.MAX_VALUE / 2 - 1 : length;
    StringBuilder s=new StringBuilder(maxLength);
    for (int i=0; i < maxLength; i++) {
      if (chars[i] == '\0') {
        s.append('\\');
        s.append('0');
        nullCharacterCount++;
      }
 else {
        s.append(chars[i]);
      }
    }
    tmp=s.toString();
    if (nullCharacterCount > 0) {
      message+="String_Node_Str" + nullCharacterCount + "String_Node_Str"+ "String_Node_Str"+ getParsedContent(tmp);
    }
  }
  if (ex instanceof ArrayIndexOutOfBoundsException) {
    try {
      int index=Integer.parseInt(ex.getMessage());
      if (index == settings.getMaxCharsPerColumn()) {
        message+="String_Node_Str" + index + "String_Node_Str";
      }
      if (index == settings.getMaxColumns()) {
        message+="String_Node_Str" + index + "String_Node_Str";
      }
      message+="String_Node_Str";
    }
 catch (    Throwable t) {
    }
  }
  try {
    if (!message.isEmpty()) {
      message+="String_Node_Str";
    }
    message+="String_Node_Str" + settings.toString();
  }
 catch (  Exception t) {
  }
  if (errorContentLength == 0) {
    output.appender.reset();
  }
  TextParsingException out=new TextParsingException(context,message,ex);
  out.setErrorContentLength(errorContentLength);
  return out;
}

Fixed version (ground truth):
private TextParsingException handleException(Throwable ex){
  if (context != null) {
    context.stop();
  }
  if (ex instanceof DataProcessingException) {
    DataProcessingException error=(DataProcessingException)ex;
    error.restrictContent(errorContentLength);
    error.setContext(this.context);
    throw error;
  }
  String message=ex.getClass().getName() + "String_Node_Str" + ex.getMessage();
  char[] chars=output.appender.getChars();
  if (chars != null) {
    int length=output.appender.length();
    if (length > chars.length) {
      message="String_Node_Str" + length + "String_Node_Str"+ "String_Node_Str"+ settings.getMaxCharsPerColumn()+ "String_Node_Str";
      length=chars.length;
    }
    String tmp=new String(chars);
    if (tmp.contains("String_Node_Str") || tmp.contains("String_Node_Str")) {
      tmp=displayLineSeparators(tmp,true);
      String lineSeparator=displayLineSeparators(settings.getFormat().getLineSeparatorString(),false);
      message+="String_Node_Str" + "String_Node_Str" + lineSeparator + "String_Node_Str"+ getParsedContent(tmp);
    }
    int nullCharacterCount=0;
    int maxLength=length > Integer.MAX_VALUE / 2 ? Integer.MAX_VALUE / 2 - 1 : length;
    StringBuilder s=new StringBuilder(maxLength);
    for (int i=0; i < maxLength; i++) {
      if (chars[i] == '\0') {
        s.append('\\');
        s.append('0');
        nullCharacterCount++;
      }
 else {
        s.append(chars[i]);
      }
    }
    tmp=s.toString();
    if (nullCharacterCount > 0) {
      message+="String_Node_Str" + nullCharacterCount + "String_Node_Str"+ "String_Node_Str"+ getParsedContent(tmp);
    }
  }
  if (ex instanceof ArrayIndexOutOfBoundsException) {
    try {
      int index=Integer.parseInt(ex.getMessage());
      if (index == settings.getMaxCharsPerColumn()) {
        message+="String_Node_Str" + index + "String_Node_Str";
      }
      if (index == settings.getMaxColumns()) {
        message+="String_Node_Str" + index + "String_Node_Str";
      }
      message+="String_Node_Str";
    }
 catch (    Throwable t) {
    }
  }
  try {
    if (!message.isEmpty()) {
      message+="String_Node_Str";
    }
    message+="String_Node_Str" + settings.toString();
  }
 catch (  Exception t) {
  }
  if (errorContentLength == 0) {
    output.appender.reset();
  }
  TextParsingException out=new TextParsingException(context,message,ex);
  out.setErrorContentLength(errorContentLength);
  return out;
}