title: Xcode 7 crash: [NSLocalizableString length] 30000
body: <p>The app just hangs on iOS7,8,9, makes 30000 calls to [NSLocalizableString length]
  The cpu is on max.</p>
  
  <p>see <a href="https://forums.developer.apple.com/thread/16001">https://forums.developer.apple.com/thread/16001</a> also</p>
  
  <pre><code>(lldb) bt 
  * thread #1: tid = 0x2cb4df, 0x0349065c Foundation`-[NSLocalizableString length] + 6, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=2, address=0xbf728ffc) 
    * frame #0: 0x0349065c Foundation`-[NSLocalizableString length] + 6 
      frame #1: 0x03490680 Foundation`-[NSLocalizableString length] + 42 
      frame #2: 0x03490680 Foundation`-[NSLocalizableString length] + 42 
      frame #3: 0x03490680 Foundation`-[NSLocalizableString length] + 42 
      frame #4: 0x03490680 Foundation`-[NSLocalizableString length] + 42 
      frame #5: 0x03490680 Foundation`-[NSLocalizableString length] + 42 
      frame #6: 0x03490680 Foundation`-[NSLocalizableString length] + 42 
      frame #7: 0x03490680 Foundation`-[NSLocalizableString length] + 42 
      frame #8: 0x03490680 Foundation`-[NSLocalizableString length] + 42 
      frame #9: 0x03490680 Foundation`-[NSLocalizableString length] + 42 
      frame #10: 0x03490680 Foundation`-[NSLocalizableString length] + 42 
      frame #11: 0x03490680 Foundation`-[NSLocalizableString length] + 42 
      frame #12: 0x03490680 Foundation`-[NSLocalizableString length] + 42 
      frame #13: 0x03490680 Foundation`-[NSLocalizableString length] + 42 
      frame #14: 0x03490680 Foundation`-[NSLocalizableString length] + 42 
      frame #15: 0x03490680 Foundation`-[NSLocalizableString length] + 42 
      frame #16: 0x03490680 Foundation`-[NSLocalizableString length] + 42 
      frame #17: 0x03490680 Foundation`-[NSLocalizableString length] + 42 
  </code></pre>