#vulnerable code 
                             private void execute() throws IOException, TransformerException, JAXBException {
		CFLintConfig config = null;
		if(configfile != null){
			if(configfile.toLowerCase().endsWith(".xml")){
				config = ConfigUtils.unmarshal(new FileInputStream(configfile), CFLintConfig.class);
			}else{
				config = ConfigUtils.unmarshalJson(new FileInputStream(configfile), CFLintConfig.class);
			}

		}
		final CFLint cflint = new CFLint(config);
		cflint.setVerbose(verbose);
		cflint.setLogError(logerror);
		cflint.setQuiet(quiet);
		cflint.setShowProgress(showprogress);
		cflint.setProgressUsesThread(progressUsesThread);
		if(extensions != null && extensions.trim().length() > 0){
			try{
				cflint.setAllowedExtensions(Arrays.asList(extensions.trim().split(",")));
			}catch(Exception e){
				System.err.println("Unable to use extensions (" + extensions + ") using default instead. " + e.getMessage());
			}
		}
		CFLintFilter filter = CFLintFilter.createFilter(verbose);
		if(filterFile != null){
			File ffile = new File(filterFile);
			if(ffile.exists()){
				FileInputStream fis = new FileInputStream(ffile);
				byte b[] = new byte[fis.available()];
				fis.read(b);
				filter = CFLintFilter.createFilter(new String(b),verbose);
			}
		}

		if (excludeCodes != null && excludeCodes.length > 0) {
			filter.excludeCode(excludeCodes);
		}
		if (includeCodes != null && includeCodes.length > 0) {
			filter.includeCode(includeCodes);
		}
		cflint.getBugs().setFilter(filter);
		for (final String scanfolder : folder) {
			cflint.scan(scanfolder);
		}
		if (stdIn) {
			StringBuilder source = new StringBuilder();
			Scanner scanner = new Scanner(System.in);
			while (scanner.hasNextLine()) {
				String nextLine = scanner.nextLine();
				source.append(nextLine);
				source.append(System.lineSeparator());
			}
			scanner.close();
			cflint.process(source.toString(), stdInFile);
		}
		if (xmlOutput) {
			Writer xmlwriter = stdOut ? new OutputStreamWriter(System.out) : new FileWriter(xmlOutFile);
			if ("findbugs".equalsIgnoreCase(xmlstyle)) {
				if(verbose) {
					display("Writing XML findbugs style" + (stdOut ? "." : " to " + xmlOutFile));
				}
				new XMLOutput().outputFindBugs(cflint.getBugs(), xmlwriter);
			} else {
				if(verbose) {
					display("Writing XML" + (stdOut ? "." : " to " + xmlOutFile));
				}
				new XMLOutput().output(cflint.getBugs(), xmlwriter);
			}
		}
		if (textOutput) {
			if(textOutFile != null){
				if(verbose) {
					display("Writing text" + (stdOut ? "." : " to " + textOutFile));
				}
			}
			Writer textwriter = stdOut || textOutFile==null ? new OutputStreamWriter(System.out) : new FileWriter(textOutFile);
			new TextOutput().output(cflint.getBugs(), textwriter);

		}
		if (htmlOutput) {
			try {
				if(verbose) {
					display("Writing HTML" + (stdOut ? "." : " to " + htmlOutFile));
				}
				Writer htmlwriter = stdOut ? new OutputStreamWriter(System.out) : new FileWriter(htmlOutFile);
				new HTMLOutput(htmlStyle).output(cflint.getBugs(), htmlwriter);
			} catch (final TransformerException e) {
				throw new IOException(e);
			}
		}
		if (jsonOutput) {
			if(verbose) {
				display("Writing JSON" + (stdOut ? "." : " to " + jsonOutFile));
			}
			Writer jsonwriter = stdOut ? new OutputStreamWriter(System.out) : new FileWriter(jsonOutFile);
			new JSONOutput().output(cflint.getBugs(), jsonwriter);
		}
		if (includeCodes != null) {
			cflint.getBugs().getFilter().includeCode(includeCodes);
		}
		if (excludeCodes != null) {
			cflint.getBugs().getFilter().excludeCode(excludeCodes);
		}
	} 
                            #location 41 
                            #vulnerability type NULL_DEREFERENCE
#fixed code
                             private void execute() throws IOException, TransformerException, JAXBException {
		final CFLint cflint = new CFLint(loadConfig(configfile));
		cflint.setVerbose(verbose);
		cflint.setLogError(logerror);
		cflint.setQuiet(quiet);
		cflint.setShowProgress(showprogress);
		cflint.setProgressUsesThread(progressUsesThread);
		if(extensions != null && extensions.trim().length() > 0){
			try{
				cflint.setAllowedExtensions(Arrays.asList(extensions.trim().split(",")));
			}catch(Exception e){
				System.err.println("Unable to use extensions (" + extensions + ") using default instead. " + e.getMessage());
			}
		}
		CFLintFilter filter = CFLintFilter.createFilter(verbose);
		if(filterFile != null){
			File ffile = new File(filterFile);
			if(ffile.exists()){
				FileInputStream fis = new FileInputStream(ffile);
				byte b[] = new byte[fis.available()];
				fis.read(b);
				filter = CFLintFilter.createFilter(new String(b),verbose);
			}
		}

		if (excludeCodes != null && excludeCodes.length > 0) {
			filter.excludeCode(excludeCodes);
		}
		if (includeCodes != null && includeCodes.length > 0) {
			filter.includeCode(includeCodes);
		}
		cflint.getBugs().setFilter(filter);
		for (final String scanfolder : folder) {
			cflint.scan(scanfolder);
		}
		if (stdIn) {
			StringBuilder source = new StringBuilder();
			Scanner scanner = new Scanner(System.in);
			while (scanner.hasNextLine()) {
				String nextLine = scanner.nextLine();
				source.append(nextLine);
				source.append(System.lineSeparator());
			}
			scanner.close();
			cflint.process(source.toString(), stdInFile);
		}
		if (xmlOutput) {
			Writer xmlwriter = stdOut ? new OutputStreamWriter(System.out) : new FileWriter(xmlOutFile);
			if ("findbugs".equalsIgnoreCase(xmlstyle)) {
				if(verbose) {
					display("Writing XML findbugs style" + (stdOut ? "." : " to " + xmlOutFile));
				}
				new XMLOutput().outputFindBugs(cflint.getBugs(), xmlwriter);
			} else {
				if(verbose) {
					display("Writing XML" + (stdOut ? "." : " to " + xmlOutFile));
				}
				new XMLOutput().output(cflint.getBugs(), xmlwriter);
			}
		}
		if (textOutput) {
			if(textOutFile != null){
				if(verbose) {
					display("Writing text" + (stdOut ? "." : " to " + textOutFile));
				}
			}
			Writer textwriter = stdOut || textOutFile==null ? new OutputStreamWriter(System.out) : new FileWriter(textOutFile);
			new TextOutput().output(cflint.getBugs(), textwriter);

		}
		if (htmlOutput) {
			try {
				if(verbose) {
					display("Writing HTML" + (stdOut ? "." : " to " + htmlOutFile));
				}
				Writer htmlwriter = stdOut ? new OutputStreamWriter(System.out) : new FileWriter(htmlOutFile);
				new HTMLOutput(htmlStyle).output(cflint.getBugs(), htmlwriter);
			} catch (final TransformerException e) {
				throw new IOException(e);
			}
		}
		if (jsonOutput) {
			if(verbose) {
				display("Writing JSON" + (stdOut ? "." : " to " + jsonOutFile));
			}
			Writer jsonwriter = stdOut ? new OutputStreamWriter(System.out) : new FileWriter(jsonOutFile);
			new JSONOutput().output(cflint.getBugs(), jsonwriter);
		}
		if (includeCodes != null) {
			cflint.getBugs().getFilter().includeCode(includeCodes);
		}
		if (excludeCodes != null) {
			cflint.getBugs().getFilter().excludeCode(excludeCodes);
		}
	}