third_party/WebKit/LayoutTests/fast/dom/hover-node-refcnt-asan-crash.html

<div id=div0></div>
<div id=div1>
  <div id=overflow style="width:500px; height:150px; padding:10px">
    <img width=100 height=100>
  </div>
  <p id=p0>1</p>
  <span id=span0></span>
</div>
<p>This test should not crash on ASAN</p>
<script>
// crbug.com/514755, This test crashes on ASAN builds.
// The crash happens while updating the old hovered active nodes chain
// after hovered node changes. Nodes were deref'ed and could be mistakenly freed
// before use.
if (window.testRunner)
  window.testRunner.dumpAsText();

eventSender.mouseMoveTo(50, 100);
eventSender.mouseDown(1);
eventSender.mouseMoveTo(50, 200);

div0.addEventListener("DOMNodeRemoved", function () {
  // This triggers removing all children in #div1
  div1.innerHTML = '';
});

// hovered element (<img>) will disappear.
div1.createShadowRoot();
div0.appendChild(p0);
// This causes synchronous DOMNodeRemoved event
div0.replaceChild(span0, p0);
gc();
</script>