From 45583e56c0d359e9113d64d8eed056863f7ba900 Mon Sep 17 00:00:00 2001
From: Eric Huss <eric@huss.org>
Date: Mon, 22 Mar 2021 12:57:52 -0700
Subject: [PATCH] Change `-W help` to display edition level.

---
 compiler/rustc_driver/src/lib.rs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/compiler/rustc_driver/src/lib.rs b/compiler/rustc_driver/src/lib.rs
index 25a78041c00..e527d55fc2a 100644
--- a/compiler/rustc_driver/src/lib.rs
+++ b/compiler/rustc_driver/src/lib.rs
@@ -895,7 +895,12 @@ fn sort_lint_groups(
     let print_lints = |lints: Vec<&Lint>| {
         for lint in lints {
             let name = lint.name_lower().replace("_", "-");
-            println!("    {}  {:7.7}  {}", padded(&name), lint.default_level.as_str(), lint.desc);
+            println!(
+                "    {}  {:7.7}  {}",
+                padded(&name),
+                lint.default_level(sess.edition()).as_str(),
+                lint.desc
+            );
         }
         println!("\n");
     };
-- 
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