Don't emit coerce suggestions for a type into itself

rust-lang · Nov 10, 2022 · 312d6b8 · 312d6b8
1 parent a3c0a02
commit 312d6b8
Showing 1 changed file with 4 additions and 0 deletions.
diff --git 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