Merging upstream version 1.0.81.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 7 insertions, 11 deletions

diff --git a/src/marker.rs b/src/marker.rs
index e8874bd..23b94ce 100644
--- a/src/marker.rs
+++ b/src/marker.rs
@@ -4,18 +4,14 @@ use core::panic::{RefUnwindSafe, UnwindSafe};
 
 // Zero sized marker with the correct set of autotrait impls we want all proc
 // macro types to have.
-pub(crate) type Marker = PhantomData<ProcMacroAutoTraits>;
+#[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) use self::value::*;
-
-mod value {
-    pub(crate) use core::marker::PhantomData as Marker;
-}
-
-pub(crate) struct ProcMacroAutoTraits(
-    #[allow(dead_code)] // https://github.com/rust-lang/rust/issues/119645
-    Rc<()>,
-);
+pub(crate) const MARKER: ProcMacroAutoTraits = ProcMacroAutoTraits(PhantomData);
 
 impl UnwindSafe for ProcMacroAutoTraits {}
 impl RefUnwindSafe for ProcMacroAutoTraits {}