From e521c67e5f29ddd84e0ce744dfc27a836d349514 Mon Sep 17 00:00:00 2001
From: Christoph Walcher <christoph-wa@gmx.de>
Date: Mon, 3 Aug 2020 12:32:23 +0200
Subject: [PATCH] early return on empty parameters/where clause

---
 clippy_lints/src/trait_bounds.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/clippy_lints/src/trait_bounds.rs b/clippy_lints/src/trait_bounds.rs
index 108113748..06631f89f 100644
--- a/clippy_lints/src/trait_bounds.rs
+++ b/clippy_lints/src/trait_bounds.rs
@@ -148,7 +148,7 @@ impl TraitBounds {
 }
 
 fn check_trait_bound_duplication(cx: &LateContext<'_>, gen: &'_ Generics<'_>) {
-    if in_macro(gen.span) {
+    if in_macro(gen.span) || gen.params.is_empty() || gen.where_clause.predicates.is_empty() {
         return;
     }