From d4670375742c69512ec0a143b196bf31dd019b5f Mon Sep 17 00:00:00 2001
From: Takayuki Maeda <takoyaki0316@gmail.com>
Date: Fri, 8 May 2026 15:06:00 +0900
Subject: [PATCH] avoid ICE in as_ref suggestion for untyped receiver

---
 compiler/rustc_hir_typeck/src/fn_ctxt/suggestions.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/compiler/rustc_hir_typeck/src/fn_ctxt/suggestions.rs b/compiler/rustc_hir_typeck/src/fn_ctxt/suggestions.rs
index 7e2f3e62589f..01479180dd3e 100644
--- a/compiler/rustc_hir_typeck/src/fn_ctxt/suggestions.rs
+++ b/compiler/rustc_hir_typeck/src/fn_ctxt/suggestions.rs
@@ -2787,7 +2787,7 @@ fn can_use_as_ref(&self, expr: &hir::Expr<'_>) -> Option<(Vec<(Span, String)>, &
             return None;
         };
 
-        let self_ty = self.typeck_results.borrow().expr_ty(receiver);
+        let self_ty = self.typeck_results.borrow().expr_ty_opt(receiver)?;
         let name = method_path.ident.name;
         let is_as_ref_able = match self_ty.peel_refs().kind() {
             ty::Adt(def, _) => {