stale-scrollbar-client-crash.html   [plain text]

<html lang="en">
<p><b>BUG ID:</b> <a href="rdar://problem/5523503">rdar://problem/5523503</a> Safari crashes clicking scroll bar in FaceBook 'Trips'</p>

<p id="test" style="background-color:skyblue; padding:3px;"><b>STEPS TO TEST:</b> 
Drag the scroll thumb in each of the vertical scrollbars below.

<p id="success" style="background-color:palegreen; padding:3px;"><b>TEST PASS:</b> 
Each scrollbar will disappear when clicked, along with the box containing it, but the browser will not crash as you continue to drag.

<p id="failure" style="background-color:#FF3300; padding:3px;"><b>TEST FAIL:</b>  
The scrollbar will disappear and Safari will crash as you continue dragging.

<div style="height: 120px;">
    <div id="overflow" style="overflow: auto; height: 100px; width: 100px; background-color: lightblue;">
        <div style="height: 200px;"></div>
    <select multiple="true" id="listbox" style="height: 100px; width: 100px;">
    var overflow = document.getElementById("overflow");
    var listbox = document.getElementById("listbox");

    function mousedown(event)
        if (
            setTimeout( + '.style.display = "none"', 0);

    overflow.addEventListener("mousedown", mousedown, false);
    listbox.addEventListener("mousedown", mousedown, false);