Unconditional check FRU expression, even if there are errors present

Author: compiler-errors

compiler/rustc_hir_typeck/src/expr.rs

@@ -1646,6 +1646,9 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
         // the fields with the base_expr. This could cause us to hit errors later
         // when certain fields are assumed to exist that in fact do not.
         if error_happened {
+            if let Some(base_expr) = base_expr {
+                self.check_expr(base_expr);
+            }
             return;
         }
 

src/test/ui/async-await/drop-track-bad-field-in-fru.rs

@@ -0,0 +1,10 @@
+// compile-flags: -Zdrop-tracking
+// edition: 2021
+
+fn main() {}
+
+async fn foo() {
+    None { value: (), ..Default::default() }.await;
+    //~^ ERROR `Option<_>` is not a future
+    //~| ERROR variant `Option<_>::None` has no field named `value`
+}

src/test/ui/async-await/drop-track-bad-field-in-fru.stderr

@@ -0,0 +1,23 @@
+error[E0559]: variant `Option<_>::None` has no field named `value`
+  --> $DIR/drop-track-bad-field-in-fru.rs:7:12
+   |
+LL |     None { value: (), ..Default::default() }.await;
+   |            ^^^^^ `Option<_>::None` does not have this field
+
+error[E0277]: `Option<_>` is not a future
+  --> $DIR/drop-track-bad-field-in-fru.rs:7:45
+   |
+LL |     None { value: (), ..Default::default() }.await;
+   |                                             ^^^^^^
+   |                                             |
+   |                                             `Option<_>` is not a future
+   |                                             help: remove the `.await`
+   |
+   = help: the trait `Future` is not implemented for `Option<_>`
+   = note: Option<_> must be a future or must implement `IntoFuture` to be awaited
+   = note: required for `Option<_>` to implement `IntoFuture`
+
+error: aborting due to 2 previous errors
+
+Some errors have detailed explanations: E0277, E0559.
+For more information about an error, try `rustc --explain E0277`.