1 files changed, 11 insertions, 0 deletions
diff --git a/library/core/src/char/decode.rs b/library/core/src/char/decode.rs
index 71297acd1..dc8ea66cc 100644
--- a/library/core/src/char/decode.rs
+++ b/library/core/src/char/decode.rs
@@ -1,5 +1,7 @@
 //! UTF-8 and UTF-16 decoding iterators
 
+#[cfg(not(bootstrap))]
+use crate::error::Error;
 use crate::fmt;
 
 use super::from_u32_unchecked;
@@ -121,3 +123,12 @@ impl fmt::Display for DecodeUtf16Error {
         write!(f, "unpaired surrogate found: {:x}", self.code)
     }
 }
+
+#[cfg(not(bootstrap))]
+#[stable(feature = "decode_utf16", since = "1.9.0")]
+impl Error for DecodeUtf16Error {
+    #[allow(deprecated)]
+    fn description(&self) -> &str {
+        "unpaired surrogate found"
+    }
+}