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    #[derive(Debug)]
    pub(crate) struct UnsafeCell<T>(std::cell::UnsafeCell<T>);

    impl<T> UnsafeCell<T> {
        pub(crate) const fn new(data: T) -> UnsafeCell<T> {
            UnsafeCell(std::cell::UnsafeCell::new(data))
        }

        pub(crate) fn with<R>(&self, f: impl FnOnce(*const T) -> R) -> R {
            f(self.0.get())
        }

        pub(crate) fn with_mut<R>(&self, f: impl FnOnce(*mut T) -> R) -> R {
            f(self.0.get())
        }
    }