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-rw-r--r--src/libsyntax/lib.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/libsyntax/lib.rs b/src/libsyntax/lib.rs
index a68b7fdf931..261cc53e158 100644
--- a/src/libsyntax/lib.rs
+++ b/src/libsyntax/lib.rs
@@ -11,6 +11,7 @@
 #![feature(const_fn)]
 #![feature(const_transmute)]
 #![feature(crate_visibility_modifier)]
+#![feature(decl_macro)]
 #![feature(label_break_value)]
 #![feature(nll)]
 #![feature(try_trait)]