1 files changed, 7 insertions, 6 deletions
diff --git a/vendor/proc-macro2/src/parse.rs b/vendor/proc-macro2/src/parse.rs
index 1c9974cfa..307e06508 100644
--- a/vendor/proc-macro2/src/parse.rs
+++ b/vendor/proc-macro2/src/parse.rs
@@ -14,7 +14,7 @@ pub(crate) struct Cursor<'a> {
 }
 
 impl<'a> Cursor<'a> {
-    fn advance(&self, bytes: usize) -> Cursor<'a> {
+    pub fn advance(&self, bytes: usize) -> Cursor<'a> {
         let (_front, rest) = self.rest.split_at(bytes);
         Cursor {
             rest,
@@ -23,7 +23,7 @@ impl<'a> Cursor<'a> {
         }
     }
 
-    fn starts_with(&self, s: &str) -> bool {
+    pub fn starts_with(&self, s: &str) -> bool {
         self.rest.starts_with(s)
     }
 
@@ -116,9 +116,9 @@ fn block_comment(input: Cursor) -> PResult<&str> {
         return Err(Reject);
     }
 
-    let mut depth = 0;
+    let mut depth = 0usize;
     let bytes = input.as_bytes();
-    let mut i = 0;
+    let mut i = 0usize;
     let upper = bytes.len() - 1;
 
     while i < upper {
@@ -283,8 +283,9 @@ fn ident_any(input: Cursor) -> PResult<crate::Ident> {
         return Ok((rest, ident));
     }
 
-    if sym == "_" {
-        return Err(Reject);
+    match sym {
+        "_" | "super" | "self" | "Self" | "crate" => return Err(Reject),
+        _ => {}
     }
 
     let ident = crate::Ident::_new_raw(sym, crate::Span::call_site());