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-rw-r--r--library/core/src/ptr/unique.rs2
1 files changed, 0 insertions, 2 deletions
diff --git a/library/core/src/ptr/unique.rs b/library/core/src/ptr/unique.rs
index c069314ff7d..e9e13f9e97f 100644
--- a/library/core/src/ptr/unique.rs
+++ b/library/core/src/ptr/unique.rs
@@ -32,8 +32,6 @@ use crate::ptr::NonNull;
 )]
 #[doc(hidden)]
 #[repr(transparent)]
-// Lang item used experimentally by Miri to define the semantics of `Unique`.
-#[lang = "ptr_unique"]
 pub struct Unique<T: PointeeSized> {
     pointer: NonNull<T>,
     // NOTE: this marker has no consequences for variance, but is necessary