[Webkit-unassigned] [Bug 141379] New: REGRESSION (r179504): Google Maps "More options and times" UI stops updating, starts throwing exceptions

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=141379

            Bug ID: 141379
           Summary: REGRESSION (r179504): Google Maps "More options and
                    times" UI stops updating, starts throwing exceptions
    Classification: Unclassified
           Product: WebKit
           Version: 528+ (Nightly build)
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: thorton at apple.com

Steps to Reproduce:

1. Open Google Maps, load a map that has transit options. For example, https://www.google.com/maps/dir/N+1st+St,+San+Jose/Infinite+Loop,+Cupertino,+CA+95014/@37.3536601,-122.0372037,12z/data=!3m1!4b1!4m13!4m12!1m5!1m1!1s0x808fcbd90f454731:0xb1a4bc20600da649!2m2!1d-121.9263258!2d37.3839041!1m5!1m1!1s0x808fb5b6e7b4b9fb:0x697a4332574f50d9!2m2!1d-122.0307465!2d37.3321082

2. Click on the bus icon to go to the transit options.

3. Click "More options and times" at the bottom of the list of bus routes.

4. Repeatedly click the right arrow next to the time, to advance the search time forward.

Expected:

Clicking should keep working, the time line should keep moving, the UI should keep updating.

Actual:

Eventually the UI stops responding and we start getting fun errors in the JS console.

Notes:

I regressed this down to http://trac.webkit.org/changeset/179504.

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