diff --git a/src/libsyntax/parse/lexer.rs b/src/libsyntax/parse/lexer.rs
index 2521bb515f7..469d3d64f24 100644
--- a/src/libsyntax/parse/lexer.rs
+++ b/src/libsyntax/parse/lexer.rs
@@ -42,7 +42,6 @@ pub struct TokenAndSpan {
 
 pub struct StringReader {
     span_diagnostic: @SpanHandler,
-    src: @str,
     // The absolute offset within the codemap of the next character to read
     pos: Cell<BytePos>,
     // The absolute offset within the codemap of the last character read(curr)
@@ -73,7 +72,6 @@ pub fn new_low_level_string_reader(span_diagnostic: @SpanHandler,
     let initial_char = '\n';
     let r = @StringReader {
         span_diagnostic: span_diagnostic,
-        src: filemap.src,
         pos: Cell::new(filemap.start_pos),
         last_pos: Cell::new(filemap.start_pos),
         col: Cell::new(CharPos(0)),
@@ -93,7 +91,6 @@ pub fn new_low_level_string_reader(span_diagnostic: @SpanHandler,
 fn dup_string_reader(r: @StringReader) -> @StringReader {
     @StringReader {
         span_diagnostic: r.span_diagnostic,
-        src: r.src,
         pos: Cell::new(r.pos.get()),
         last_pos: Cell::new(r.last_pos.get()),
         col: Cell::new(r.col.get()),
@@ -188,7 +185,7 @@ fn fatal_span_verbose(rdr: @StringReader,
                    -> ! {
     let mut m = m;
     m.push_str(": ");
-    let s = rdr.src.slice(
+    let s = rdr.filemap.src.slice(
                   byte_offset(rdr, from_pos).to_uint(),
                   byte_offset(rdr, to_pos).to_uint());
     m.push_str(s);
@@ -239,7 +236,7 @@ fn with_str_from_to<T>(
                     end: BytePos,
                     f: |s: &str| -> T)
                     -> T {
-    f(rdr.src.slice(
+    f(rdr.filemap.src.slice(
             byte_offset(rdr, start).to_uint(),
             byte_offset(rdr, end).to_uint()))
 }
@@ -249,12 +246,12 @@ fn with_str_from_to<T>(
 pub fn bump(rdr: &StringReader) {
     rdr.last_pos.set(rdr.pos.get());
     let current_byte_offset = byte_offset(rdr, rdr.pos.get()).to_uint();
-    if current_byte_offset < (rdr.src).len() {
+    if current_byte_offset < (rdr.filemap.src).len() {
         assert!(rdr.curr.get() != unsafe {
             transmute(-1u32)
         }); // FIXME: #8971: unsound
         let last_char = rdr.curr.get();
-        let next = rdr.src.char_range_at(current_byte_offset);
+        let next = rdr.filemap.src.char_range_at(current_byte_offset);
         let byte_offset_diff = next.next - current_byte_offset;
         rdr.pos.set(rdr.pos.get() + Pos::from_uint(byte_offset_diff));
         rdr.curr.set(next.ch);
@@ -277,8 +274,8 @@ pub fn is_eof(rdr: @StringReader) -> bool {
 }
 pub fn nextch(rdr: @StringReader) -> char {
     let offset = byte_offset(rdr, rdr.pos.get()).to_uint();
-    if offset < (rdr.src).len() {
-        return rdr.src.char_at(offset);
+    if offset < (rdr.filemap.src).len() {
+        return rdr.filemap.src.char_at(offset);
     } else { return unsafe { transmute(-1u32) }; } // FIXME: #8971: unsound
 }