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-rw-r--r--src/librustc_mir_build/lib.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/librustc_mir_build/lib.rs b/src/librustc_mir_build/lib.rs
index c6d65d56c93..b44d8eee462 100644
--- a/src/librustc_mir_build/lib.rs
+++ b/src/librustc_mir_build/lib.rs
@@ -4,7 +4,7 @@
 
 #![feature(box_patterns)]
 #![feature(box_syntax)]
-#![feature(const_if_match)]
+#![cfg_attr(bootstrap, feature(const_if_match))]
 #![feature(const_fn)]
 #![feature(const_panic)]
 #![feature(crate_visibility_modifier)]