move core::hint::black_box under its own feature gate

[rust.git] / compiler / rustc_index / src / lib.rs

diff --git a/compiler/rustc_index/src/lib.rs b/compiler/rustc_index/src/lib.rs
index 995034e81da289ed07796017ef783a35861981d2..4036f4da1a76b6a475aba11e42c01bb4d4e3f1b8 100644 (file)
--- a/compiler/rustc_index/src/lib.rs
+++ b/compiler/rustc_index/src/lib.rs
@@ -1,7 +1,9 @@
 #![feature(allow_internal_unstable)]
+#![feature(bench_black_box)]
 #![feature(const_fn)]
 #![feature(const_panic)]
 #![feature(extend_one)]
+#![feature(iter_zip)]
 #![feature(unboxed_closures)]
 #![feature(test)]
 #![feature(fn_traits)]