#vulnerable code 
                              private void precompile( Map<String, Set<String>> typeNames )
  {
    for( ITypeManifold tm: ManifoldHost.instance().getCurrentModule().getTypeManifolds() )
    {
      for( Map.Entry<String, Set<String>> entry: typeNames.entrySet() )
      {
        String typeManifoldClassName = entry.getKey();
        if( tm.getClass().getName().equals( typeManifoldClassName ) )
        {
          Collection<String> namesToPrecompile = computeNamesToPrecompile( tm.getAllTypeNames(), entry.getValue() );
          for( String fqn : namesToPrecompile )
          {
            JavacElements elementUtils = JavacElements.instance( _tp.getContext() );
            // This call surfaces the type in the compiler.  If compiling in "static" mode, this means
            // the type will be compiled to disk.
            elementUtils.getTypeElement( fqn );
          }
        }
      }
    }
  } 
                            #location 3 
                            #vulnerability type NULL_DEREFERENCE
#fixed code
                              private void precompile( Map<String, Set<String>> typeNames )
  {
    for( ITypeManifold tm: ManifoldHost.instance().getCurrentModule().getTypeManifolds() )
    {
      for( Map.Entry<String, Set<String>> entry: typeNames.entrySet() )
      {
        String typeManifoldClassName = entry.getKey();
        if( tm.getClass().getName().equals( typeManifoldClassName ) )
        {
          Collection<String> namesToPrecompile = computeNamesToPrecompile( tm.getAllTypeNames(), entry.getValue() );
          for( String fqn : namesToPrecompile )
          {
            // This call surfaces the type in the compiler.  If compiling in "static" mode, this means
            // the type will be compiled to disk.
            IDynamicJdk.instance().getTypeElement( _tp.getContext(), (JCTree.JCCompilationUnit)_tp.getCompilationUnit(), fqn );
          }
        }
      }
    }
  }