[Webkit-unassigned] [Bug 157945] New: Web Inspector: retained size for typed arrays does not count native backing store

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=157945

            Bug ID: 157945
           Summary: Web Inspector: retained size for typed arrays does not
                    count native backing store
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: All
                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

STEPS TO REPRODUCE

1. Go to http://bl.ocks.org/syntagmatic/6c149c08fc9cde682635
2. Capture a recording long enough that a really big GC happens
3. Compare heap snapshots before and after a big GC

EXPECTED

It lists a Float32Array and ArrayBuffer with 10's of thousands of elements, so it should be MB's of data

ACTUAL

Retained size is 32 bytes regardless of typed array size

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