| use alloc::rc::Rc; |
| use core::marker::PhantomData; |
| use core::panic::{RefUnwindSafe, UnwindSafe}; |
| |
| // Zero sized marker with the correct set of autotrait impls we want all proc |
| // macro types to have. |
| #[derive(Copy, Clone)] |
| #[cfg_attr( |
| all(procmacro2_semver_exempt, any(not(wrap_proc_macro), super_unstable)), |
| derive(PartialEq, Eq) |
| )] |
| pub(crate) struct ProcMacroAutoTraits(PhantomData<Rc<()>>); |
| |
| pub(crate) const MARKER: ProcMacroAutoTraits = ProcMacroAutoTraits(PhantomData); |
| |
| impl UnwindSafe for ProcMacroAutoTraits {} |
| impl RefUnwindSafe for ProcMacroAutoTraits {} |
