give a helpful diagnostic even when the next struct field has an attribute

2022-08-13 12:50:53 +08:00
parent 1603a70f82
commit 52a15180d2
4 changed files with 50 additions and 2 deletions
--- a/compiler/rustc_parse/src/parser/item.rs
+++ b/compiler/rustc_parse/src/parser/item.rs
@@ -1539,8 +1539,12 @@ impl<'a> Parser<'a> {
                    }
                }

-                if self.token.is_ident() {
-                    // This is likely another field; emit the diagnostic and keep going
+                if self.token.is_ident()
+                    || (self.token.kind == TokenKind::Pound
+                        && (self.look_ahead(1, |t| t == &token::OpenDelim(Delimiter::Bracket))))
+                {
+                    // This is likely another field, TokenKind::Pound is used for `#[..]` attribute for next field,
+                    // emit the diagnostic and keep going
                    err.span_suggestion(
                        sp,
                        "try adding a comma",