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use std::marker::PhantomData;
use std::panic::{RefUnwindSafe, UnwindSafe};
use std::rc::Rc;

// Zero sized marker with the correct set of autotrait impls we want all proc
// macro types to have.
pub(crate) type Marker = PhantomData<ProcMacroAutoTraits>;

pub(crate) use self::value::*;

mod value {
    pub(crate) use std::marker::PhantomData as Marker;
}

pub(crate) struct ProcMacroAutoTraits(Rc<()>);

impl UnwindSafe for ProcMacroAutoTraits {}
impl RefUnwindSafe for ProcMacroAutoTraits {}