LayoutTests/fast/block/float/in-margin.html

<div style="width: 400px;">
    <div style="width: 100px; float: left; height: 100px;"></div>
     <div style="margin-left: 300px; background-color: red;">
         <div style="background-color: green; overflow: hidden; width: 110%; height: 110px;"></div>
     </div>
</div>