From 2f74283fce768a262387fe7f51e1e4ebb9b0e300 Mon Sep 17 00:00:00 2001
From: Eduardo Broto <ebroto@tutanota.com>
Date: Wed, 10 Jun 2020 00:14:02 +0200
Subject: [PATCH] Add a comment linking to the issue

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

diff --git a/clippy_lints/src/utils/hir_utils.rs b/clippy_lints/src/utils/hir_utils.rs
index 6846658b6e29..9c2c96203c03 100644
--- a/clippy_lints/src/utils/hir_utils.rs
+++ b/clippy_lints/src/utils/hir_utils.rs
@@ -316,7 +316,7 @@ fn swap_binop<'a>(
         BinOpKind::Le => Some((BinOpKind::Ge, rhs, lhs)),
         BinOpKind::Ge => Some((BinOpKind::Le, rhs, lhs)),
         BinOpKind::Gt => Some((BinOpKind::Lt, rhs, lhs)),
-        BinOpKind::Mul
+        BinOpKind::Mul // Not always commutative, e.g. with matrices. See issue #5698
         | BinOpKind::Shl
         | BinOpKind::Shr
         | BinOpKind::Rem