From 312d6b8e9afce578fd5bd89b3c73153fe0be7539 Mon Sep 17 00:00:00 2001
From: Michael Goulet <michael@errs.io>
Date: Thu, 10 Nov 2022 20:21:13 +0000
Subject: [PATCH] Don't emit coerce suggestions for a type into itself

---
 compiler/rustc_hir_typeck/src/demand.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/compiler/rustc_hir_typeck/src/demand.rs b/compiler/rustc_hir_typeck/src/demand.rs
index 7f78f5fb8a7b..602e0a904f8b 100644
--- a/compiler/rustc_hir_typeck/src/demand.rs
+++ b/compiler/rustc_hir_typeck/src/demand.rs
@@ -30,6 +30,10 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
         expected_ty_expr: Option<&'tcx hir::Expr<'tcx>>,
         error: Option<TypeError<'tcx>>,
     ) {
+        if expr_ty == expected {
+            return;
+        }
+
         self.annotate_expected_due_to_let_ty(err, expr, error);
 
         // Use `||` to give these suggestions a precedence