From a6b5f875c1cb3a77200c6f3da3d7df0601f90173 Mon Sep 17 00:00:00 2001
From: Guillaume Gomez <guillaume1.gomez@gmail.com>
Date: Thu, 20 Feb 2020 14:26:43 +0100
Subject: [PATCH 1/2] clean up E0321 explanation

---
 src/librustc_error_codes/error_codes/E0321.md | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/librustc_error_codes/error_codes/E0321.md b/src/librustc_error_codes/error_codes/E0321.md
index 49cec94430b..bfcdabfe9de 100644
--- a/src/librustc_error_codes/error_codes/E0321.md
+++ b/src/librustc_error_codes/error_codes/E0321.md
@@ -1,5 +1,7 @@
 A cross-crate opt-out trait was implemented on something which wasn't a struct
-or enum type. Erroneous code example:
+or enum type.
+
+Erroneous code example:
 
 ```compile_fail,E0321
 #![feature(optin_builtin_traits)]

From 90ebf93bdfe2acdaeb504a24dea27fbfd74e3218 Mon Sep 17 00:00:00 2001
From: Guillaume Gomez <guillaume1.gomez@gmail.com>
Date: Thu, 20 Feb 2020 14:26:56 +0100
Subject: [PATCH 2/2] Greatly improve E0322 explanation

---
 src/librustc_error_codes/error_codes/E0322.md | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/librustc_error_codes/error_codes/E0322.md b/src/librustc_error_codes/error_codes/E0322.md
index d2ee426763e..ccef8681dd6 100644
--- a/src/librustc_error_codes/error_codes/E0322.md
+++ b/src/librustc_error_codes/error_codes/E0322.md
@@ -1,3 +1,13 @@
+The `Sized` trait was implemented explicitly.
+
+Erroneous code example:
+
+```compile_fail,E0322
+struct Foo;
+
+impl Sized for Foo {} // error!
+```
+
 The `Sized` trait is a special trait built-in to the compiler for types with a
 constant size known at compile-time. This trait is automatically implemented
 for types as needed by the compiler, and it is currently disallowed to