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-rw-r--r--src/libsyntax_pos/lib.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/libsyntax_pos/lib.rs b/src/libsyntax_pos/lib.rs
index 5a7b7e9ceca..eb345200f41 100644
--- a/src/libsyntax_pos/lib.rs
+++ b/src/libsyntax_pos/lib.rs
@@ -21,7 +21,7 @@
 
 #![feature(const_fn)]
 #![feature(custom_attribute)]
-#![feature(i128_type)]
+#![cfg_attr(stage0, feature(i128_type))]
 #![feature(optin_builtin_traits)]
 #![allow(unused_attributes)]
 #![feature(specialization)]