ios - UIKit<-segue->SpriteKit memory leak -

i enjoy swift, ios development.

i add segue between viewcontroller(for uikit), , viewcontroller(for spritekit).

i run iphone simulator, memory navigator increase 30m per switch viewcontroller.

osx 10.9.5, xcode.6.1.1

1. new -> project -> game
2. new -> file -> swift file -> firstviewcontroller.swift
3. drag viewcontroller library storyboard, set custom class: firstviewcontroller

4. set arrow firstviewcontroller

5. select firstviewcontroller, option&drag gameviewcontroller(segue)

6. set identifier "togame"
7. select gameviewcontroller, option&drag self exit
8. set identifier "back"

code:

class firstviewcontroller: uiviewcontroller {     @ibaction func returnmenu(segue: uistoryboardsegue) {         println("back!")     }      override func touchesended(touches: nsset, withevent event: uievent) {         performseguewithidentifier("togame", sender: nil)     } }   class gameviewcontroller: uiviewcontroller {      override func viewdidload() {         super.viewdidload()          if let scene = gamescene.unarchivefromfile("gamescene") as? gamescene {             scene.viewcontroller = self             skview.presentscene(scene)         }     } }  class gamescene: skscene {      var viewcontroller: uiviewcontroller?      override func touchesbegan(touches: nsset, withevent event: uievent) {         touch: anyobject in touches {         self.viewcontroller?.performseguewithidentifier("back", sender: nil)     } } 

thanks.

class gamescene: skscene {     weak var viewcontroller: uiviewcontroller? } 

thank everyone! weak references! memory leak solved!