From 912b49dd2b9ffe00cdcc79747cab42d7e9ba8953 Mon Sep 17 00:00:00 2001
From: xizheyin <xizheyin@smail.nju.edu.cn>
Date: Sat, 5 Apr 2025 16:34:02 +0800
Subject: [PATCH] Suppress swapping equality suggestion in extern macro when
 check overloaded binop

Signed-off-by: xizheyin <xizheyin@smail.nju.edu.cn>
---
 compiler/rustc_hir_typeck/src/op.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/compiler/rustc_hir_typeck/src/op.rs b/compiler/rustc_hir_typeck/src/op.rs
index 93f77b8409f00..ddcfe88448a8d 100644
--- a/compiler/rustc_hir_typeck/src/op.rs
+++ b/compiler/rustc_hir_typeck/src/op.rs
@@ -249,7 +249,8 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
             rhs_ty_var,
             Some(lhs_expr),
             |err, ty| {
-                if let Op::BinOp(binop) = op
+                if !expr.span.in_external_macro(self.tcx.sess.source_map())
+                    && let Op::BinOp(binop) = op
                     && binop.node == hir::BinOpKind::Eq
                 {
                     self.suggest_swapping_lhs_and_rhs(err, ty, lhs_ty, rhs_expr, lhs_expr);