From d018ef180d9bc4e852457fd83fda0bec8452baf6 Mon Sep 17 00:00:00 2001
From: est31 <MTest31@outlook.com>
Date: Tue, 2 Mar 2021 03:07:13 +0100
Subject: Add notes to keep the UnusedExterns structs synced up

---
 compiler/rustc_errors/src/json.rs | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'compiler/rustc_errors/src')

diff --git a/compiler/rustc_errors/src/json.rs b/compiler/rustc_errors/src/json.rs
index 8511b51e3bf..3753ca580e7 100644
--- a/compiler/rustc_errors/src/json.rs
+++ b/compiler/rustc_errors/src/json.rs
@@ -335,6 +335,10 @@ struct FutureIncompatReport {
     future_incompat_report: Vec<FutureBreakageItem>,
 }
 
+// NOTE: Keep this in sync with the equivalent structs in rustdoc's
+// doctest component (as well as cargo).
+// We could unify this struct the one in rustdoc but they have different
+// ownership semantics, so doing so would create wasteful allocations.
 #[derive(Encodable)]
 struct UnusedExterns<'a, 'b, 'c> {
     /// The severity level of the unused dependencies lint
-- 
cgit 1.4.1-3-g733a5