Add missing primary label

Author: estebank

src/librustc_resolve/late/diagnostics.rs

@@ -532,6 +532,7 @@ impl<'a> LateResolutionVisitor<'a, '_, '_> {
                     }),
                 ) if followed_by_brace => {
                     if let Some(sp) = closing_brace {
+                        err.span_label(span, fallback_label);
                         err.multipart_suggestion(
                             "surround the struct literal with parentheses",
                             vec![
@@ -595,12 +596,15 @@ impl<'a> LateResolutionVisitor<'a, '_, '_> {
                         applicability,
                     );
                 }
-                _ => {}
+                _ => {
+                    err.span_label(span, fallback_label);
+                }
             }
         };
 
         match (res, source) {
             (Res::Def(DefKind::Macro(MacroKind::Bang), _), _) => {
+                err.span_label(span, fallback_label);
                 err.span_suggestion_verbose(
                     span.shrink_to_hi(),
                     "use `!` to invoke the macro",

src/test/ui/error-codes/E0423.stderr

@@ -51,7 +51,7 @@ error[E0423]: expected value, found struct `T`
   --> $DIR/E0423.rs:14:8
    |
 LL |     if T {} == T {} { println!("Ok"); }
-   |        ^
+   |        ^ not a value
    |
 help: surround the struct literal with parentheses
    |

src/test/ui/hygiene/rustc-macro-transparency.stderr

@@ -8,7 +8,7 @@ error[E0423]: expected value, found macro `semitransparent`
   --> $DIR/rustc-macro-transparency.rs:29:5
    |
 LL |     semitransparent;
-   |     ^^^^^^^^^^^^^^^
+   |     ^^^^^^^^^^^^^^^ not a value
    |
 help: use `!` to invoke the macro
    |
@@ -19,7 +19,7 @@ error[E0423]: expected value, found macro `opaque`
   --> $DIR/rustc-macro-transparency.rs:30:5
    |
 LL |     opaque;
-   |     ^^^^^^
+   |     ^^^^^^ not a value
    |
 help: use `!` to invoke the macro
    |

src/test/ui/resolve/resolve-hint-macro.stderr

@@ -2,7 +2,7 @@ error[E0423]: expected function, found macro `assert`
   --> $DIR/resolve-hint-macro.rs:2:5
    |
 LL |     assert(true);
-   |     ^^^^^^
+   |     ^^^^^^ not a function
    |
 help: use `!` to invoke the macro
    |

src/test/ui/struct-literal-variant-in-if.stderr

@@ -46,7 +46,7 @@ error[E0423]: expected value, found struct variant `E::V`
   --> $DIR/struct-literal-variant-in-if.rs:10:13
    |
 LL |     if x == E::V { field } {}
-   |             ^^^^
+   |             ^^^^ not a value
    |
 help: surround the struct literal with parentheses
    |

src/test/ui/try-block/try-block-in-edition2015.stderr

@@ -11,7 +11,7 @@ error[E0574]: expected struct, variant or union type, found macro `try`
   --> $DIR/try-block-in-edition2015.rs:4:33
    |
 LL |     let try_result: Option<_> = try {
-   |                                 ^^^
+   |                                 ^^^ not a struct, variant or union type
    |
    = note: if you want the `try` keyword, you need to be in the 2018 edition
 help: use `!` to invoke the macro