Stabilize proc macros generating `macro_rules` items

[rust.git] / src / libsyntax_pos / lib.rs

diff --git a/src/libsyntax_pos/lib.rs b/src/libsyntax_pos/lib.rs
index 30ee9b90515ee4dd7e075255b8f7a54450886999..7f7c5cb2e454865aa188616c11958410f98fe3b9 100644 (file)
--- a/src/libsyntax_pos/lib.rs
+++ b/src/libsyntax_pos/lib.rs
@@ -12,7 +12,7 @@
 #![feature(non_exhaustive)]
 #![feature(optin_builtin_traits)]
 #![feature(rustc_attrs)]
-#![feature(proc_macro_hygiene)]
+#![cfg_attr(bootstrap, feature(proc_macro_hygiene))]
 #![feature(specialization)]
 #![feature(step_trait)]