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-rw-r--r--library/alloc/src/string.rs3
1 files changed, 3 insertions, 0 deletions
diff --git a/library/alloc/src/string.rs b/library/alloc/src/string.rs
index 7dba5b4e1f9..7464df268cc 100644
--- a/library/alloc/src/string.rs
+++ b/library/alloc/src/string.rs
@@ -2479,6 +2479,9 @@ impl ops::Deref for String {
     }
 }
 
+#[unstable(feature = "deref_pure_trait", issue = "87121")]
+unsafe impl ops::DerefPure for String {}
+
 #[stable(feature = "derefmut_for_string", since = "1.3.0")]
 impl ops::DerefMut for String {
     #[inline]