diff options
Diffstat (limited to 'vendor/proc-macro2/src/marker.rs')
-rw-r--r-- | vendor/proc-macro2/src/marker.rs | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/vendor/proc-macro2/src/marker.rs b/vendor/proc-macro2/src/marker.rs new file mode 100644 index 000000000..58729baf4 --- /dev/null +++ b/vendor/proc-macro2/src/marker.rs @@ -0,0 +1,18 @@ +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 {} |