[Webkit-unassigned] [Bug 172884] New: UIScriptController: Synchronously calling the callback of an async task causes assertions and lots of trouble

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=172884

            Bug ID: 172884
           Summary: UIScriptController: Synchronously calling the callback
                    of an async task causes assertions and lots of trouble
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Tools / Tests
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: thorton at apple.com
                CC: lforschler at apple.com

Created attachment 311891

  --> https://bugs.webkit.org/attachment.cgi?id=311891&action=review

test/repro

I wrote a test in r217587 that is broken because the async task's completion block is called synchronously, and UIScriptController is just not designed to deal with that.

I've attached a patch that adds a test that reproduces this, but don't really have a great plan to fix (I'm just going to paper over it in my test for now).

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