From 6fd4f3463f54a7b06189dcc783d5e14593ff7e15 Mon Sep 17 00:00:00 2001
From: Amanieu d'Antras <amanieu@gmail.com>
Date: Thu, 12 Aug 2021 00:18:53 +0100
Subject: [PATCH] Allow the use of the deprecated llvm_asm! in black_box

---
 library/core/src/hint.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/library/core/src/hint.rs b/library/core/src/hint.rs
index a4924554919b0..ba878ff66a008 100644
--- a/library/core/src/hint.rs
+++ b/library/core/src/hint.rs
@@ -155,6 +155,7 @@ pub fn spin_loop() {
 #[inline]
 #[unstable(feature = "bench_black_box", issue = "64102")]
 #[cfg_attr(not(bootstrap), allow(unused_mut))]
+#[cfg_attr(bootstrap, allow(deprecated))]
 pub fn black_box<T>(mut dummy: T) -> T {
     #[cfg(bootstrap)]
     // SAFETY: the inline assembly is a no-op.