IPC::Attachment uses encode/decode on Unix IPC::Attachment is an attachment to the encoded and decoded data. The attachment itself should not be encoded or decoded.
<rdar://problem/99684383>
Pull request: https://github.com/WebKit/WebKit/pull/4122
Committed 254512@main (bd0da08a7545): <https://commits.webkit.org/254512@main> Reviewed commits have been landed. Closing PR #4122 and removing active labels.