[Webkit-unassigned] [Bug 234169] New: Darwin const ShareableBitmap::Handle gets invalidated during IPC encoding

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=234169

            Bug ID: 234169
           Summary: Darwin const ShareableBitmap::Handle gets invalidated
                    during IPC encoding
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit2
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: kkinnunen at apple.com
                CC: kkinnunen at apple.com

const ShareableBitmap::Handle gets invalidated during IPC encoding

.. via SharedMemory::Handle IPC encoding transferring the send right to the receiver.

ShareableBitmap::Handle&&, SharedMemory::Handle&& should be transferred this way

const ShareableBitmap::Handle, const SharedMemory::Handle should be transferred by copying

Otherwise causes bugs when handle is held and sent multiple times, as in bug  231009

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