diff options
| -rw-r--r-- | library/core/src/hint.rs | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/library/core/src/hint.rs b/library/core/src/hint.rs index 1192b9e164a..fdf5bbf6144 100644 --- a/library/core/src/hint.rs +++ b/library/core/src/hint.rs @@ -110,7 +110,7 @@ pub fn spin_loop() { /// backend used. Programs cannot rely on `black_box` for *correctness* in any way. #[inline] #[unstable(feature = "test", issue = "50297")] -#[allow(unreachable_code)] // this makes #[cfg] a bit easier below. +#[cfg_attr(miri, allow(unused_mut))] pub fn black_box<T>(mut dummy: T) -> T { // We need to "use" the argument in some way LLVM can't introspect, and on // targets that support it we can typically leverage inline assembly to do |