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-rw-r--r--src/libstd/num/int_macros.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/libstd/num/int_macros.rs b/src/libstd/num/int_macros.rs
index 9b3c9d29cc7..a4200b55a59 100644
--- a/src/libstd/num/int_macros.rs
+++ b/src/libstd/num/int_macros.rs
@@ -8,6 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+#![experimental]
 #![macro_escape]
 #![doc(hidden)]