tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1// SPDX-License-Identifier: Apache-2.0 OR MIT
2
3use alloc::rc::Rc;
4use core::marker::PhantomData;
5use core::panic::{RefUnwindSafe, UnwindSafe};
6
7// Zero sized marker with the correct set of autotrait impls we want all proc
8// macro types to have.
9#[derive(Copy, Clone)]
10#[cfg_attr(
11 all(procmacro2_semver_exempt, any(not(wrap_proc_macro), super_unstable)),
12 derive(PartialEq, Eq)
13)]
14pub(crate) struct ProcMacroAutoTraits(PhantomData<Rc<()>>);
15
16pub(crate) const MARKER: ProcMacroAutoTraits = ProcMacroAutoTraits(PhantomData);
17
18impl UnwindSafe for ProcMacroAutoTraits {}
19impl RefUnwindSafe for ProcMacroAutoTraits {}