1 files changed, 2 insertions, 6 deletions
diff --git a/src/libsyntax_ext/concat.rs b/src/libsyntax_ext/concat.rs
index f5c2805c4ca..9f6cf73ed64 100644
--- a/src/libsyntax_ext/concat.rs
+++ b/src/libsyntax_ext/concat.rs
@@ -38,14 +38,10 @@ pub fn expand_syntax_ext(cx: &mut base::ExtCtxt,
                         accumulator.push(c);
                     }
                     ast::LitInt(i, ast::UnsignedIntLit(_)) |
-                    ast::LitInt(i, ast::SignedIntLit(_, ast::Plus)) |
-                    ast::LitInt(i, ast::UnsuffixedIntLit(ast::Plus)) => {
+                    ast::LitInt(i, ast::SignedIntLit(_)) |
+                    ast::LitInt(i, ast::UnsuffixedIntLit) => {
                         accumulator.push_str(&format!("{}", i));
                     }
-                    ast::LitInt(i, ast::SignedIntLit(_, ast::Minus)) |
-                    ast::LitInt(i, ast::UnsuffixedIntLit(ast::Minus)) => {
-                        accumulator.push_str(&format!("-{}", i));
-                    }
                     ast::LitBool(b) => {
                         accumulator.push_str(&format!("{}", b));
                     }