tweak logic of "unknown field" label

compiler/rustc_hir_typeck/src/expr.rs

@@ -2191,7 +2191,8 @@ fn report_unknown_field(
                 if let Some(field_name) =
                     find_best_match_for_name(&available_field_names, field.ident.name, None)
                 {
-                    err.span_suggestion(
+                    err.span_label(field.ident.span, "unknown field");
+                    err.span_suggestion_verbose(
                         field.ident.span,
                         "a field with a similar name exists",
                         field_name,
@@ -2420,17 +2421,22 @@ fn suggest_await_on_field_access(
         ty: Ty<'tcx>,
     ) {
         let Some(output_ty) = self.get_impl_future_output_ty(ty) else {
+            err.span_label(field_ident.span, "unknown field");
+            return;
+        };
+        let ty::Adt(def, _) = output_ty.kind() else {
+            err.span_label(field_ident.span, "unknown field");
             return;
         };
-        if let ty::Adt(def, _) = output_ty.kind() {
         // no field access on enum type
-            if !def.is_enum() {
+        if def.is_enum() {
-                if def
+            err.span_label(field_ident.span, "unknown field");
-                    .non_enum_variant()
+            return;
-                    .fields
+        }
-                    .iter()
+        if !def.non_enum_variant().fields.iter().any(|field| field.ident(self.tcx) == field_ident) {
-                    .any(|field| field.ident(self.tcx) == field_ident)
+            err.span_label(field_ident.span, "unknown field");
-                {
+            return;
+        }
         err.span_label(
             field_ident.span,
             "field not available in `impl Future`, but it is available in its `Output`",
@@ -2442,9 +2448,6 @@ fn suggest_await_on_field_access(
             Applicability::MaybeIncorrect,
         );
     }
-            }
-        }
-    }
 
     fn ban_nonexisting_field(
         &self,
@@ -2467,15 +2470,16 @@ fn ban_nonexisting_field(
                 self.suggest_first_deref_field(&mut err, expr, base, ident);
             }
             ty::Param(param_ty) => {
+                err.span_label(ident.span, "unknown field");
                 self.point_at_param_definition(&mut err, param_ty);
             }
             ty::Alias(ty::Opaque, _) => {
                 self.suggest_await_on_field_access(&mut err, ident, base, base_ty.peel_refs());
             }
-            _ => {}
+            _ => {
-        }
-
                 err.span_label(ident.span, "unknown field");
+            }
+        }
 
         self.suggest_fn_call(&mut err, base, base_ty, |output_ty| {
             if let ty::Adt(def, _) = output_ty.kind()
@@ -2635,6 +2639,7 @@ fn maybe_suggest_array_indexing(
         field: Ident,
         len: ty::Const<'tcx>,
     ) {
+        err.span_label(field.span, "unknown field");
         if let (Some(len), Ok(user_index)) =
             (len.try_eval_target_usize(self.tcx, self.param_env), field.as_str().parse::<u64>())
             && let Ok(base) = self.tcx.sess.source_map().span_to_snippet(base.span)
@@ -2657,6 +2662,7 @@ fn suggest_first_deref_field(
         base: &hir::Expr<'_>,
         field: Ident,
     ) {
+        err.span_label(field.span, "unknown field");
         if let Ok(base) = self.tcx.sess.source_map().span_to_snippet(base.span) {
             let msg = format!("`{base}` is a raw pointer; try dereferencing it");
             let suggestion = format!("(*{base}).{field}");

tests/ui/async-await/issue-61076.rs

@@ -71,12 +71,10 @@ async fn baz() -> Result<(), ()> {
     let _: i32 = tuple().0; //~ ERROR no field `0`
     //~^ HELP consider `await`ing on the `Future`
     //~| NOTE field not available in `impl Future`
-    //~| NOTE unknown field
 
     let _: i32 = struct_().a; //~ ERROR no field `a`
     //~^ HELP consider `await`ing on the `Future`
     //~| NOTE field not available in `impl Future`
-    //~| NOTE unknown field
 
     struct_().method(); //~ ERROR no method named
     //~^ NOTE method not found in `impl Future<Output = Struct>`

tests/ui/async-await/issue-61076.stderr

@@ -26,10 +26,7 @@ error[E0609]: no field `0` on type `impl Future<Output = Tuple>`
   --> $DIR/issue-61076.rs:71:26
    |
 LL |     let _: i32 = tuple().0;
-   |                          ^
+   |                          ^ field not available in `impl Future`, but it is available in its `Output`
-   |                          |
-   |                          field not available in `impl Future`, but it is available in its `Output`
-   |                          unknown field
    |
 help: consider `await`ing on the `Future` and access the field of its `Output`
    |
@@ -37,13 +34,10 @@ LL |     let _: i32 = tuple().await.0;
    |                         ++++++
 
 error[E0609]: no field `a` on type `impl Future<Output = Struct>`
-  --> $DIR/issue-61076.rs:76:28
+  --> $DIR/issue-61076.rs:75:28
    |
 LL |     let _: i32 = struct_().a;
-   |                            ^
+   |                            ^ field not available in `impl Future`, but it is available in its `Output`
-   |                            |
-   |                            field not available in `impl Future`, but it is available in its `Output`
-   |                            unknown field
    |
 help: consider `await`ing on the `Future` and access the field of its `Output`
    |
@@ -51,7 +45,7 @@ LL |     let _: i32 = struct_().await.a;
    |                           ++++++
 
 error[E0599]: no method named `method` found for opaque type `impl Future<Output = Struct>` in the current scope
-  --> $DIR/issue-61076.rs:81:15
+  --> $DIR/issue-61076.rs:79:15
    |
 LL |     struct_().method();
    |               ^^^^^^ method not found in `impl Future<Output = Struct>`
@@ -62,7 +56,7 @@ LL |     struct_().await.method();
    |               ++++++
 
 error[E0308]: mismatched types
-  --> $DIR/issue-61076.rs:90:9
+  --> $DIR/issue-61076.rs:88:9
    |
 LL |     match tuple() {
    |           ------- this expression has type `impl Future<Output = Tuple>`

tests/ui/did_you_mean/dont-suggest-hygienic-fields.stderr

@@ -5,9 +5,13 @@ LL | environment!();
    | -------------- in this macro invocation
 ...
 LL |     const CRATE: Crate = Crate { fiel: () };
-   |                                  ^^^^ help: a field with a similar name exists: `field`
+   |                                  ^^^^ unknown field
    |
    = note: this error originates in the macro `environment` (in Nightly builds, run with -Z macro-backtrace for more info)
+help: a field with a similar name exists
+   |
+LL |     const CRATE: Crate = Crate { field: () };
+   |                                  ~~~~~
 
 error[E0609]: no field `field` on type `Compound`
   --> $DIR/dont-suggest-hygienic-fields.rs:24:16

tests/ui/did_you_mean/issue-42599_available_fields_note.stderr

@@ -2,7 +2,12 @@ error[E0560]: struct `Demo` has no field named `inocently_mispellable`
   --> $DIR/issue-42599_available_fields_note.rs:16:39
    |
 LL |             Self { secret_integer: 2, inocently_mispellable: () }
-   |                                       ^^^^^^^^^^^^^^^^^^^^^ help: a field with a similar name exists: `innocently_misspellable`
+   |                                       ^^^^^^^^^^^^^^^^^^^^^ unknown field
+   |
+help: a field with a similar name exists
+   |
+LL |             Self { secret_integer: 2, innocently_misspellable: () }
+   |                                       ~~~~~~~~~~~~~~~~~~~~~~~
 
 error[E0560]: struct `Demo` has no field named `egregiously_nonexistent_field`
   --> $DIR/issue-42599_available_fields_note.rs:21:39

tests/ui/rmeta/rmeta_meta_main.stderr

@@ -2,7 +2,12 @@ error[E0560]: struct `Foo` has no field named `field2`
   --> $DIR/rmeta_meta_main.rs:13:19
    |
 LL |     let _ = Foo { field2: 42 };
-   |                   ^^^^^^ help: a field with a similar name exists: `field`
+   |                   ^^^^^^ unknown field
+   |
+help: a field with a similar name exists
+   |
+LL |     let _ = Foo { field: 42 };
+   |                   ~~~~~
 
 error: aborting due to previous error
 

tests/ui/structs/struct-fields-hints-no-dupe.stderr

@@ -2,7 +2,12 @@ error[E0560]: struct `A` has no field named `bar`
   --> $DIR/struct-fields-hints-no-dupe.rs:10:9
    |
 LL |         bar : 42,
-   |         ^^^ help: a field with a similar name exists: `barr`
+   |         ^^^ unknown field
+   |
+help: a field with a similar name exists
+   |
+LL |         barr : 42,
+   |         ~~~~
 
 error: aborting due to previous error
 

tests/ui/structs/struct-fields-hints.stderr

@@ -2,7 +2,12 @@ error[E0560]: struct `A` has no field named `bar`
   --> $DIR/struct-fields-hints.rs:10:9
    |
 LL |         bar : 42,
-   |         ^^^ help: a field with a similar name exists: `car`
+   |         ^^^ unknown field
+   |
+help: a field with a similar name exists
+   |
+LL |         car : 42,
+   |         ~~~
 
 error: aborting due to previous error
 

tests/ui/structs/suggest-private-fields.stderr

@@ -2,7 +2,12 @@ error[E0560]: struct `B` has no field named `aa`
   --> $DIR/suggest-private-fields.rs:15:9
    |
 LL |         aa: 20,
-   |         ^^ help: a field with a similar name exists: `a`
+   |         ^^ unknown field
+   |
+help: a field with a similar name exists
+   |
+LL |         a: 20,
+   |         ~
 
 error[E0560]: struct `B` has no field named `bb`
   --> $DIR/suggest-private-fields.rs:17:9
@@ -16,13 +21,23 @@ error[E0560]: struct `A` has no field named `aa`
   --> $DIR/suggest-private-fields.rs:22:9
    |
 LL |         aa: 20,
-   |         ^^ help: a field with a similar name exists: `a`
+   |         ^^ unknown field
+   |
+help: a field with a similar name exists
+   |
+LL |         a: 20,
+   |         ~
 
 error[E0560]: struct `A` has no field named `bb`
   --> $DIR/suggest-private-fields.rs:24:9
    |
 LL |         bb: 20,
-   |         ^^ help: a field with a similar name exists: `b`
+   |         ^^ unknown field
+   |
+help: a field with a similar name exists
+   |
+LL |         b: 20,
+   |         ~
 
 error: aborting due to 4 previous errors
 

tests/ui/suggestions/type-mismatch-struct-field-shorthand-2.stderr

@@ -24,7 +24,12 @@ error[E0560]: struct `RGB` has no field named `c`
   --> $DIR/type-mismatch-struct-field-shorthand-2.rs:5:25
    |
 LL |     let _ = RGB { r, g, c };
-   |                         ^ help: a field with a similar name exists: `b`
+   |                         ^ unknown field
+   |
+help: a field with a similar name exists
+   |
+LL |     let _ = RGB { r, g, b };
+   |                         ~
 
 error: aborting due to 3 previous errors
 

tests/ui/union/union-suggest-field.mirunsafeck.stderr

@@ -2,7 +2,12 @@ error[E0560]: union `U` has no field named `principle`
   --> $DIR/union-suggest-field.rs:13:17
    |
 LL |     let u = U { principle: 0 };
-   |                 ^^^^^^^^^ help: a field with a similar name exists: `principal`
+   |                 ^^^^^^^^^ unknown field
+   |
+help: a field with a similar name exists
+   |
+LL |     let u = U { principal: 0 };
+   |                 ~~~~~~~~~
 
 error[E0609]: no field `principial` on type `U`
   --> $DIR/union-suggest-field.rs:17:15

tests/ui/union/union-suggest-field.thirunsafeck.stderr

@@ -2,7 +2,12 @@ error[E0560]: union `U` has no field named `principle`
   --> $DIR/union-suggest-field.rs:13:17
    |
 LL |     let u = U { principle: 0 };
-   |                 ^^^^^^^^^ help: a field with a similar name exists: `principal`
+   |                 ^^^^^^^^^ unknown field
+   |
+help: a field with a similar name exists
+   |
+LL |     let u = U { principal: 0 };
+   |                 ~~~~~~~~~
 
 error[E0609]: no field `principial` on type `U`
   --> $DIR/union-suggest-field.rs:17:15