title: Splice bug in safari, which versions affects ? (splice 0,0,x)
body: <p>I found a strange bug in safari 7.0 on Mac, involving</p>
  
  <ul>
  <li>splice - add at begining</li>
  <li><p>sparse arrays</p>
  
  <p><code>var x = [];x[1]=1;x[2]=2;console.log(x);</code></p>
  
  <p><code>x.splice(0,0,3);console.log(x);</code></p></li>
  </ul>
  
  <p>After last operation on all browsers the array is <code>[3,undefined,1,2]</code>
  In safari is : <code>[3,undefined,1,1]</code></p>
  
  <p>I couldn't find more info about this problem, only that it resembles with some IE bugs. The question is anyone knows the official support ticket about it or on what Safari versions exists.</p>