#vulnerable code 
                                public static String load(Class cls) {
        if (!loadLibraries || cls == null) {
            return null;
        }

        // Find the top enclosing class, to match the library filename
        Properties p = (Properties)getProperties().clone();
        cls = appendProperties(p, cls);

        // Force initialization of the class in case it needs it
        try {
            cls = Class.forName(cls.getName(), true, cls.getClassLoader());
        } catch (ClassNotFoundException ex) {
            Error e = new NoClassDefFoundError(ex.toString());
            e.initCause(ex);
            throw e;
        }

        // Preload native libraries desired by our class
        String pathSeparator = p.getProperty("path.separator");
        String platformRoot  = p.getProperty("platform.root");
        if (platformRoot != null && !platformRoot.endsWith(File.separator)) {
            platformRoot += File.separator;
        }
        String preloadPath      = p.getProperty("loader.preloadpath");
        String preloadLibraries = p.getProperty("loader.preload");
        UnsatisfiedLinkError preloadError = null;
        if (preloadLibraries != null) {
            String[] preloadPaths = preloadPath == null ? null : preloadPath.split(pathSeparator);
            if (preloadPaths != null && platformRoot != null) {
                for (int i = 0; i < preloadPaths.length; i++) {
                    if (!new File(preloadPaths[i]).isAbsolute()) {
                        preloadPaths[i] = platformRoot + preloadPaths[i];
                    }
                }
            }
            String[] libnames = preloadLibraries.split(pathSeparator);
            for (int i = 0; i < libnames.length; i++) {
                try {
                    loadLibrary(cls, preloadPaths, libnames[i]);
                } catch (UnsatisfiedLinkError e) {
                    preloadError = e;
                }
            }
        }

        try {
            return loadLibrary(cls, null, p.getProperty("loader.library"));
        } catch (UnsatisfiedLinkError e) {
            if (preloadError != null) {
                e.initCause(preloadError);
            }
            throw e;
        }
    } 
                            #location 38 
                            #vulnerability type NULL_DEREFERENCE
#fixed code
                                public static String load(Class cls) {
        if (!loadLibraries || cls == null) {
            return null;
        }

        // Find the top enclosing class, to match the library filename
        Properties p = (Properties)getProperties().clone();
        String pathSeparator = p.getProperty("path.separator");
        String platformRoot  = p.getProperty("platform.root");
        if (platformRoot != null && !platformRoot.endsWith(File.separator)) {
            platformRoot += File.separator;
        }
        cls = appendProperties(p, cls);
        appendProperty(p, "loader.preloadpath", pathSeparator, p.getProperty("compiler.linkpath"));
        appendProperty(p, "loader.preload",     pathSeparator, p.getProperty("compiler.link"));

        // Force initialization of the class in case it needs it
        try {
            cls = Class.forName(cls.getName(), true, cls.getClassLoader());
        } catch (ClassNotFoundException ex) {
            Error e = new NoClassDefFoundError(ex.toString());
            e.initCause(ex);
            throw e;
        }

        // Preload native libraries desired by our class
        String preloadPath = p.getProperty("loader.preloadpath");
        String preload     = p.getProperty("loader.preload");
        String[] preloadPaths = preloadPath == null ? null : preloadPath.split(pathSeparator);
        String[] preloads     = preload     == null ? null : preload    .split(pathSeparator);
        UnsatisfiedLinkError preloadError = null;
        for (int i = 0; preloadPaths != null && platformRoot != null && i < preloadPaths.length; i++) {
            if (!new File(preloadPaths[i]).isAbsolute()) {
                preloadPaths[i] = platformRoot + preloadPaths[i];
            }
        }
        for (int i = 0; preloads != null && i < preloads.length; i++) {
            try {
                loadLibrary(cls, preloadPaths, preloads[i]);
            } catch (UnsatisfiedLinkError e) {
                preloadError = e;
            }
        }

        try {
            return loadLibrary(cls, null, p.getProperty("loader.library"));
        } catch (UnsatisfiedLinkError e) {
            if (preloadError != null) {
                e.initCause(preloadError);
            }
            throw e;
        }
    }