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-rw-r--r--library/core/src/prelude/v1.rs9
1 files changed, 9 insertions, 0 deletions
diff --git a/library/core/src/prelude/v1.rs b/library/core/src/prelude/v1.rs
index 6b51ef5b012..8705eb39468 100644
--- a/library/core/src/prelude/v1.rs
+++ b/library/core/src/prelude/v1.rs
@@ -61,6 +61,15 @@ pub use crate::{
 };
 
 #[unstable(
+    feature = "concat_bytes",
+    issue = "87555",
+    reason = "`concat_bytes` is not stable enough for use and is subject to change"
+)]
+#[cfg(not(bootstrap))]
+#[doc(no_inline)]
+pub use crate::concat_bytes;
+
+#[unstable(
     feature = "asm",
     issue = "72016",
     reason = "inline assembly is not stable enough for use and is subject to change"