From 4a1e57f13daef264ec7f6974354767332c8fb5df Mon Sep 17 00:00:00 2001
From: David Tolnay <dtolnay@gmail.com>
Date: Sat, 11 May 2024 13:17:30 -0700
Subject: [PATCH] Make ParseBuffer unwindsafe

---
 src/parse.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/parse.rs b/src/parse.rs
index 5d0fbc43b8..825ffc6cca 100644
--- a/src/parse.rs
+++ b/src/parse.rs
@@ -197,6 +197,7 @@ use std::hash::{Hash, Hasher};
 use std::marker::PhantomData;
 use std::mem;
 use std::ops::Deref;
+use std::panic::{RefUnwindSafe, UnwindSafe};
 use std::rc::Rc;
 use std::str::FromStr;
 
@@ -283,6 +284,9 @@ impl<'a> Debug for ParseBuffer<'a> {
     }
 }
 
+impl<'a> UnwindSafe for ParseBuffer<'a> {}
+impl<'a> RefUnwindSafe for ParseBuffer<'a> {}
+
 /// Cursor state associated with speculative parsing.
 ///
 /// This type is the input of the closure provided to [`ParseStream::step`].