From 54d60fdee9a49e2081837cc6445c61dec0b303af Mon Sep 17 00:00:00 2001
From: cynecx <me@cynecx.net>
Date: Sat, 29 May 2021 18:16:20 +0200
Subject: hir_ty: use async ret type for inference inside async bodies

---
 crates/hir_ty/src/infer.rs | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

(limited to 'crates/hir_ty/src/infer.rs')

diff --git a/crates/hir_ty/src/infer.rs b/crates/hir_ty/src/infer.rs
index 8cefd80f3..7a4268819 100644
--- a/crates/hir_ty/src/infer.rs
+++ b/crates/hir_ty/src/infer.rs
@@ -558,7 +558,13 @@ impl<'a> InferenceContext<'a> {
 
             self.infer_pat(*pat, &ty, BindingMode::default());
         }
-        let return_ty = self.make_ty_with_mode(&data.ret_type, ImplTraitLoweringMode::Disallowed); // FIXME implement RPIT
+        let error_ty = &TypeRef::Error;
+        let return_ty = if data.is_async() {
+            data.async_ret_type.as_deref().unwrap_or(error_ty)
+        } else {
+            &*data.ret_type
+        };
+        let return_ty = self.make_ty_with_mode(return_ty, ImplTraitLoweringMode::Disallowed); // FIXME implement RPIT
         self.return_ty = return_ty;
     }
 
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