Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'crates/span/src/lib.rs')
-rw-r--r--crates/span/src/lib.rs6
1 files changed, 6 insertions, 0 deletions
diff --git a/crates/span/src/lib.rs b/crates/span/src/lib.rs
index cb91f49249..c44b0198b7 100644
--- a/crates/span/src/lib.rs
+++ b/crates/span/src/lib.rs
@@ -1,4 +1,10 @@
//! File and span related types.
+
+#![cfg_attr(feature = "in-rust-tree", feature(rustc_private))]
+
+#[cfg(feature = "in-rust-tree")]
+extern crate rustc_driver as _;
+
use std::fmt::{self, Write};
mod ast_id;