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-rw-r--r--src/libstd/lib.rs1
-rw-r--r--src/libsyntax/feature_gate.rs8
-rw-r--r--src/test/rustdoc/keyword.rs2
3 files changed, 11 insertions, 0 deletions
diff --git a/src/libstd/lib.rs b/src/libstd/lib.rs
index c576245edb7..8266cec5139 100644
--- a/src/libstd/lib.rs
+++ b/src/libstd/lib.rs
@@ -316,6 +316,7 @@
 #![cfg_attr(test, feature(update_panic_count))]
 #![cfg_attr(windows, feature(used))]
 #![feature(doc_alias)]
+#![feature(doc_keyword)]
 #![feature(float_internals)]
 #![feature(panic_info_message)]
 #![cfg_attr(not(stage0), feature(panic_implementation))]
diff --git a/src/libsyntax/feature_gate.rs b/src/libsyntax/feature_gate.rs
index 7349745fefe..51788b6063a 100644
--- a/src/libsyntax/feature_gate.rs
+++ b/src/libsyntax/feature_gate.rs
@@ -476,8 +476,12 @@ declare_features! (
     // 'a: { break 'a; }
     (active, label_break_value, "1.28.0", Some(48594), None),
 
+
     // #[panic_implementation]
     (active, panic_implementation, "1.28.0", Some(44489), None),
+
+    // #[doc(keyword = "...")]
+    (active, doc_keyword, "1.28.0", Some(51315), None),
 );
 
 declare_features! (
@@ -1506,6 +1510,10 @@ impl<'a> Visitor<'a> for PostExpansionVisitor<'a> {
                     gate_feature_post!(&self, doc_alias, attr.span,
                         "#[doc(alias = \"...\")] is experimental"
                     );
+                } else if content.iter().any(|c| c.check_name("keyword")) {
+                    gate_feature_post!(&self, doc_keyword, attr.span,
+                        "#[doc(keyword = \"...\")] is experimental"
+                    );
                 }
             }
         }
diff --git a/src/test/rustdoc/keyword.rs b/src/test/rustdoc/keyword.rs
index 5682fce7808..06ebf15d364 100644
--- a/src/test/rustdoc/keyword.rs
+++ b/src/test/rustdoc/keyword.rs
@@ -10,6 +10,8 @@
 
 #![crate_name = "foo"]
 
+#![feature(doc_keyword)]
+
 // @has foo/index.html '//h2[@id="keywords"]' 'Keywords'
 // @has foo/index.html '//a[@href="keyword.match.html"]' 'match'
 // @has foo/keyword.match.html '//a[@class="keyword"]' 'match'