From 1d8da94439017344556f7c49750b9e374f7dd579 Mon Sep 17 00:00:00 2001
From: Joshua Nelson <jyn514@gmail.com>
Date: Thu, 11 Jun 2020 17:16:38 -0400
Subject: [PATCH] Add comment about LocalDefId -> DefId

Now there are instructions on how to convert back and forth on both
structs, not just one.
---
 src/librustc_span/def_id.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/librustc_span/def_id.rs b/src/librustc_span/def_id.rs
index fad9f2f6130..0a70be1f152 100644
--- a/src/librustc_span/def_id.rs
+++ b/src/librustc_span/def_id.rs
@@ -133,6 +133,8 @@ impl rustc_serialize::UseSpecializedDecodable for DefIndex {}
 
 /// A `DefId` identifies a particular *definition*, by combining a crate
 /// index and a def index.
+///
+/// You can create a `DefId` from a `LocalDefId` using `local_def_id.to_def_id()`.
 #[derive(Clone, PartialEq, Eq, PartialOrd, Ord, Hash, Copy)]
 pub struct DefId {
     pub krate: CrateNum,