Impl `From<LocalDefId>` for `DefId`

diff --git a/src/librustc_span/def_id.rs b/src/librustc_span/def_id.rs
index fad9f2f613012db8ac9e00610a75911865b41c5f..a3909904e8ce7495f4c338eb0cb04166a049aee3 100644 (file)
--- a/src/librustc_span/def_id.rs
+++ b/src/librustc_span/def_id.rs
@@ -237,6 +237,12 @@ fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
     }
 }
 
+impl From<LocalDefId> for DefId {
+    fn from(v: LocalDefId) -> Self {
+        v.to_def_id()
+    }
+}
+
 impl rustc_serialize::UseSpecializedEncodable for LocalDefId {}
 impl rustc_serialize::UseSpecializedDecodable for LocalDefId {}