Crash at iOS 14 beta 5

崩溃在这个方法里
func toJSON() -> [String: Any]? {
if let dict = Self._serializeAny(object: self) as? [String: Any] {
return dict
}
return nil
}

The issue identifies toJSON() and the internal _serializeAny(object:) call as the crash location, but names no file or test. Reproduce the crash on iOS 14 beta 5, then inspect those entry points and determine the failing input; done means toJSON() no longer crashes for that case.

Written by the indexing model from the issue text.