[Webkit-unassigned] [Bug 212546] New: REGRESSION (r260306): Compatibility issue leading to crash on macOS games

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=212546

            Bug ID: 212546
           Summary: REGRESSION (r260306): Compatibility issue leading to
                    crash on macOS games
           Product: WebKit
           Version: Other
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Keywords: InRadar
          Severity: Normal
          Priority: P2
         Component: WebKit Misc.
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ddkilzer at webkit.org
                CC: bfulgham at webkit.org, darin at apple.com
        Depends on: 210625

Compatibility issue leading to crash on macOS games.

Changing instance variables to __weak in the _WebSafeForwarder class caused a couple of macOS games to crash just before starting play.

The fix is to remove the __weak attribute, which effectively changes them back to __unsafe_unretained.

Caused by:

    Bug 210625: [iOS WK1] -[_WebSafeForwarder asyncForwarder] uses non-static dispatch_once_t predicate
    <https://bugs.webkit.org/show_bug.cgi?id=210625>
    <https://trac.webkit.org/changeset/260306/webkit>

<rdar://problem/62624078>


Referenced Bugs:

https://bugs.webkit.org/show_bug.cgi?id=210625
[Bug 210625] [iOS WK1] -[_WebSafeForwarder asyncForwarder] uses non-static dispatch_once_t predicate
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