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-rw-r--r--src/libsyntax/error_codes.rs20
-rw-r--r--src/test/ui/deprecation/deprecation-sanity.stderr2
2 files changed, 20 insertions, 2 deletions
diff --git a/src/libsyntax/error_codes.rs b/src/libsyntax/error_codes.rs
index c0963026945..fc3f095856a 100644
--- a/src/libsyntax/error_codes.rs
+++ b/src/libsyntax/error_codes.rs
@@ -163,6 +163,25 @@ fn the_banished() {} // ok!
 ```
 "##,
 
+E0551: r##"
+An invalid meta-item was used inside an attribute.
+
+Erroneous code example:
+
+```compile_fail,E0551
+#[deprecated(note)] // error!
+fn i_am_deprecated() {}
+```
+
+Meta items are the key-value pairs inside of an attribute. To fix this issue,
+you need to give a value to the `note` key. Example:
+
+```
+#[deprecated(note = "because")] // ok!
+fn i_am_deprecated() {}
+```
+"##,
+
 E0552: r##"
 A unrecognized representation attribute was used.
 
@@ -473,7 +492,6 @@ features in the `-Z allow_features` flag.
     // rustc_deprecated attribute must be paired with either stable or unstable
     // attribute
     E0549,
-    E0551, // incorrect meta item
     E0553, // multiple rustc_const_unstable attributes
 //  E0555, // replaced with a generic attribute input check
     E0584, // file for module `..` found at both .. and ..
diff --git a/src/test/ui/deprecation/deprecation-sanity.stderr b/src/test/ui/deprecation/deprecation-sanity.stderr
index 15afa78b140..57143d68105 100644
--- a/src/test/ui/deprecation/deprecation-sanity.stderr
+++ b/src/test/ui/deprecation/deprecation-sanity.stderr
@@ -54,5 +54,5 @@ LL | #[deprecated(since = "a", since = "b", note = "c")]
 
 error: aborting due to 9 previous errors
 
-Some errors have detailed explanations: E0538, E0541, E0550, E0565.
+Some errors have detailed explanations: E0538, E0541, E0550, E0551, E0565.
 For more information about an error, try `rustc --explain E0538`.