[Webkit-unassigned] [Bug 158051] New: Web Inspector: Uncaught Exception: TypeError: undefined is not an object (evaluating 'collectionData.affectedSnapshots')

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=158051

            Bug ID: 158051
           Summary: Web Inspector: Uncaught Exception: TypeError:
                    undefined is not an object (evaluating
                    'collectionData.affectedSnapshots')
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: All
               URL: http://bl.ocks.org/syntagmatic/6c149c08fc9cde682635
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Web Inspector
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: bburg at apple.com
                CC: bburg at apple.com, graouts at webkit.org,
                    joepeck at webkit.org, mattbaker at apple.com,
                    nvasilyev at apple.com, timothy at apple.com,
                    webkit-bug-importer at group.apple.com

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Auto-generated details:

Inspected URL:        http://bl.ocks.org/syntagmatic/6c149c08fc9cde682635
Loading completed:    true
Frontend User Agent:  Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_5) AppleWebKit/602.1.34+ (KHTML, like Gecko)
Uncaught exceptions:
 - TypeError: undefined is not an object (evaluating 'collectionData.affectedSnapshots') (at HeapSnapshotWorker.js:61:36)
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* STEPS TO REPRODUCE
1. Start a timeline recording, record a while.
2. Stop the timeline recording manually.
3. Reload the page
3. Uncaught Exception dialog when main frame finishes loading (approximately)

* NOTES
This seemed to be delayed a bit after auto-recording started. I see the initial snapshot show up in the timeline, then it throws exception soon after initial load data appears in the Timeline.

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