This is the DARWIN-port specific piece of 238944.
Currently Attachment just holds a mach_port_t, and doesn't attempt to do any memory management or ownership transfer of the port.
This makes it very easy to leak. If we try to send an IPC message (and add the Attachment to m_attachments on Encoder), but fail to send the message, then we just leak the port.
Pull request: https://github.com/WebKit/WebKit/pull/1563
Committed r295666 (251671@main): <https://commits.webkit.org/251671@main>
Reviewed commits have been landed. Closing PR #1563 and removing active labels.