[Webkit-unassigned] [Bug 26184] New: Immediate Segfault when accessing VIDEO tag properties within onLoad

Thu Jun 4 05:14:50 PDT 2009

https://bugs.webkit.org/show_bug.cgi?id=26184

           Summary: Immediate Segfault when accessing VIDEO tag properties
                    within onLoad
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Mac OS X 10.5
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: New Bugs
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: mark.renouf at gmail.com

App: GtkLauncher
Version: SVN r44405
OS/Platform: 
   Ubuntu 9.04
   Linux 2.6.28-11-generic #42-Ubuntu SMP

If the properties of a VIDEO tag are read from within the onLoad handler, I get
an immediate and repeatable segault. It doesn't require a video even being
loaded.

Here's the smallest test case that triggers the problem:

<!DOCTYPE html>
<html>
<head>
<script>
    function readVideoProperties() {
       var v = document.getElementsByTagName("VIDEO")[0];
       if (v) {
         for (p in v) {
           var e = v[p];
         }
       }
    }
</script>
</head>
<body onload="readVideoProperties()">
  <video/>
</body>
</html>

Note, the problem seems to be reading the property, simply enumerating them is
fine. Also, deferring "readVideoProperties" until after load with a
setTimeout(0, ..) call prevents the problem.

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