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-rw-r--r--src/libsyntax/feature_gate.rs8
1 files changed, 8 insertions, 0 deletions
diff --git a/src/libsyntax/feature_gate.rs b/src/libsyntax/feature_gate.rs
index 9adfb61d92d..17118e4dff2 100644
--- a/src/libsyntax/feature_gate.rs
+++ b/src/libsyntax/feature_gate.rs
@@ -473,6 +473,8 @@ 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),
 );
 
 declare_features! (
@@ -1069,6 +1071,12 @@ pub const BUILTIN_ATTRIBUTES: &'static [(&'static str, AttributeType, AttributeG
                                  "attribute is currently unstable",
                                  cfg_fn!(wasm_custom_section))),
 
+    // RFC 2070
+    ("panic_implementation", Normal, Gated(Stability::Unstable,
+                           "panic_implementation",
+                           "#[panic_implementation] is an unstable feature",
+                           cfg_fn!(panic_implementation))),
+
     // Crate level attributes
     ("crate_name", CrateLevel, Ungated),
     ("crate_type", CrateLevel, Ungated),