| 1 | use alloc::rc::Rc; |
| 2 | use core::marker::PhantomData; |
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| 3 | use core::panic::{RefUnwindSafe, UnwindSafe}; |
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| 4 | |
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| 5 | // Zero sized marker with the correct set of autotrait impls we want all proc |
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| 6 | // macro types to have. |
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| 7 | #[derive (Copy, Clone)] |
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| 8 | #[cfg_attr ( |
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| 9 | all(procmacro2_semver_exempt, any(not(wrap_proc_macro), super_unstable)), |
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| 10 | derive(PartialEq, Eq) |
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| 11 | )] |
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| 12 | pub(crate) struct ProcMacroAutoTraits(PhantomData<Rc<()>>); |
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| 13 | |
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| 14 | pub(crate) const MARKER: ProcMacroAutoTraits = ProcMacroAutoTraits(PhantomData); |
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| 15 | |
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| 16 | impl UnwindSafe for ProcMacroAutoTraits {} |
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| 17 | impl RefUnwindSafe for ProcMacroAutoTraits {} |
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| 18 | |
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