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Allow the use of the deprecated llvm_asm! in black_box

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Amanieu d'Antras
2021-08-12 00:18:53 +01:00
parent 4dd933cdc2
commit 6fd4f3463f
1 changed files with 1 additions and 0 deletions
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library/core/src/hint.rs
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@@ -155,6 +155,7 @@ pub fn spin_loop() {
#[inline] #[inline]
#[unstable(feature = "bench_black_box", issue = "64102")] #[unstable(feature = "bench_black_box", issue = "64102")]
#[cfg_attr(not(bootstrap), allow(unused_mut))] #[cfg_attr(not(bootstrap), allow(unused_mut))]
#[cfg_attr(bootstrap, allow(deprecated))]
pub fn black_box<T>(mut dummy: T) -> T { pub fn black_box<T>(mut dummy: T) -> T {
#[cfg(bootstrap)] #[cfg(bootstrap)]
// SAFETY: the inline assembly is a no-op. // SAFETY: the inline assembly is a no-op.