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-rw-r--r--src/libcore/lib.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/libcore/lib.rs b/src/libcore/lib.rs
index a2b13584270..7225b016e6b 100644
--- a/src/libcore/lib.rs
+++ b/src/libcore/lib.rs
@@ -72,6 +72,7 @@
 #![feature(rustc_attrs)]
 #![feature(optin_builtin_traits)]
 #![feature(concat_idents)]
+#![feature(reflect)]
 
 #[macro_use]
 mod macros;