text: function foo(o) {
      o.f = 1;
  }
  
  function fu(o) {
      o.e = 2;
  }
  
  function bar(f, o) {
      f(o);
  }
  
  function baz(f, o) {
      f(o);
  }
  
  for (var i = 0; i < 100; ++i) {
      foo({f:1, e:2});
      foo({e:1, f:2});
      foo({d:1, e:2, f:3});
      fu({f:1, e:2});
      fu({e:1, f:2, g:3});
      fu({d:1, e:2, f:3, g:4});
  }
      
  for (var i = 0; i < 100; ++i) {
      bar(foo, {f:1});
      bar(function() { }, null);
      bar(function() { return 42; }, null);
      baz(fu, {e:1});
      baz(function() { }, null);
      baz(function() { return 42; }, null);
  }
      
  (function(f, g, o, p) {
      var result = 0;
      var n = 1000000;
      for (var i = 0; i < n; ++i) {
          var q;
          if (i == n - 1)
              q = p;
          else
              q = o;
          baz(g, q);
          bar(f, q);
      }
      if (o.e != 2)
          throw "Error: bad value in o.e: " + o.e;
      if (o.f != 1)
          throw "Error: bad value in o.f: " + o.f;
      if (p.e != 2)
          throw "Error: bad value in p.e: " + p.e;
      if (p.f != 1)
          throw "Error: bad value in p.f: " + p.f;
  })(foo, fu, {f:42, e:2}, {e:12, f:13, g:14});
  
  