output: #fixed code
                                  public static String getArchName() {
          String osArch = System.getProperty("os.arch");
          if(osArch.startsWith("arm")) {
              osArch = resolveArmArchType();
          }
          else {
              String lc = osArch.toLowerCase(Locale.US);
              if(archMapping.containsKey(lc))
                  return archMapping.get(lc);
          }
          return translateArchNameToFolderName(osArch);
      }
input: #vulnerable code 
                                  public static String getArchName() {
          String osArch = System.getProperty("os.arch");
          if(osArch.startsWith("arm")) {
              // Java 1.8 introduces a system property to determine armel or armhf
              if(System.getProperty("sun.arch.abi") != null && System.getProperty("sun.arch.abi").startsWith("gnueabihf")) {
                  return translateArchNameToFolderName("armhf");
              }
              // For java7, we stil need to if run some shell commands to determine ABI of JVM
              if(System.getProperty("os.name").contains("Linux")) {
                  String javaHome = System.getProperty("java.home");
                  try {
                      // determine if first JVM found uses ARM hard-float ABI
                      int exitCode = Runtime.getRuntime().exec("which readelf").waitFor();
                      if(exitCode == 0) {
                          String[] cmdarray = {"/bin/sh", "-c", "find '" + javaHome +
                                  "' -name 'libjvm.so' | head -1 | xargs readelf -A | " +
                                  "grep 'Tag_ABI_VFP_args: VFP registers'"};
                          exitCode = Runtime.getRuntime().exec(cmdarray).waitFor();
                          if (exitCode == 0) {
                              return translateArchNameToFolderName("armhf");
                          }
                      } else {
                          System.err.println("WARNING! readelf not found. Cannot check if running on an armhf system, " +
                                  "armel architecture will be presumed.");
                      }
                  }
                  catch(IOException e) {
                      // ignored: fall back to "arm" arch (soft-float ABI)
                  }
                  catch(InterruptedException e) {
                      // ignored: fall back to "arm" arch (soft-float ABI)
                  }
              }
          }
          else {
              String lc = osArch.toLowerCase(Locale.US);
              if(archMapping.containsKey(lc))
                  return archMapping.get(lc);
          }
          return translateArchNameToFolderName(osArch);
      } 
                              #location 5 
                              #vulnerability type NULL_DEREFERENCE