2 files changed, 17 insertions, 1 deletions
diff --git a/library/proc_macro/src/bridge/mod.rs b/library/proc_macro/src/bridge/mod.rs
index 4c1e196b5..caecda1bc 100644
--- a/library/proc_macro/src/bridge/mod.rs
+++ b/library/proc_macro/src/bridge/mod.rs
@@ -14,6 +14,7 @@ use std::hash::Hash;
 use std::marker;
 use std::mem;
 use std::ops::Bound;
+use std::ops::Range;
 use std::panic;
 use std::sync::atomic::AtomicUsize;
 use std::sync::Once;
@@ -93,6 +94,7 @@ macro_rules! with_api {
                 fn source_file($self: $S::Span) -> $S::SourceFile;
                 fn parent($self: $S::Span) -> Option<$S::Span>;
                 fn source($self: $S::Span) -> $S::Span;
+                fn byte_range($self: $S::Span) -> Range<usize>;
                 fn start($self: $S::Span) -> LineColumn;
                 fn end($self: $S::Span) -> LineColumn;
                 fn before($self: $S::Span) -> $S::Span;
@@ -335,6 +337,8 @@ pub enum LitKind {
     StrRaw(u8),
     ByteStr,
     ByteStrRaw(u8),
+    CStr,
+    CStrRaw(u8),
     Err,
 }
 
@@ -348,6 +352,8 @@ rpc_encode_decode!(
         StrRaw(n),
         ByteStr,
         ByteStrRaw(n),
+        CStr,
+        CStrRaw(n),
         Err,
     }
 );
@@ -519,3 +525,7 @@ pub struct ExpnGlobals<Span> {
 compound_traits!(
     struct ExpnGlobals<Span> { def_site, call_site, mixed_site }
 );
+
+compound_traits!(
+    struct Range<T> { start, end }
+);
diff --git a/library/proc_macro/src/lib.rs b/library/proc_macro/src/lib.rs
index 9d081c8b8..c64665b6a 100644
--- a/library/proc_macro/src/lib.rs
+++ b/library/proc_macro/src/lib.rs
@@ -44,7 +44,7 @@ mod diagnostic;
 pub use diagnostic::{Diagnostic, Level, MultiSpan};
 
 use std::cmp::Ordering;
-use std::ops::RangeBounds;
+use std::ops::{Range, RangeBounds};
 use std::path::PathBuf;
 use std::str::FromStr;
 use std::{error, fmt};
@@ -488,6 +488,12 @@ impl Span {
         Span(self.0.source())
     }
 
+    /// Returns the span's byte position range in the source file.
+    #[unstable(feature = "proc_macro_span", issue = "54725")]
+    pub fn byte_range(&self) -> Range<usize> {
+        self.0.byte_range()
+    }
+
     /// Gets the starting line/column in the source file for this span.
     #[unstable(feature = "proc_macro_span", issue = "54725")]
     pub fn start(&self) -> LineColumn {