Dead code removal of closure compiler and uglifyjs

gistfile1.js

(function(){
    var DEBUG=false,
        NEVER_READ='hello';


    (function() {
        if(DEBUG){
          console.log('Hello world');
        }
    })();

    function a() {
      if(DEBUG){
        console.log('Hello world');
      }
    }

    function b() {
    }

    function c(){
    }

    function d(){
    }

    function e(){
    }

    function f(){
    }

    function g(){
      console.log('g');
    }
    a();
})();

(function(){
    console.log('a');
    console.log('b');
    console.log('c');
    g();
})()

uglifyjs

(function(){function i(){console.log("g")}function h(){}function g(){}function f(){}function e(){}function d(){}function c(){a&&console.log("Hello world")}var a=!1,b="hello";(function(){a&&console.log("Hello world")})(),c()})()(function(){console.log("a"),console.log("b"),console.log("c"),g()})()

closure-compiler ADVANCED

console.log("a");console.log("b");console.log("c");g()