From 6a56c3a930733b7e000cc3ec54844b0522a8bd16 Mon Sep 17 00:00:00 2001
From: Nicholas Nethercote <n.nethercote@gmail.com>
Date: Tue, 22 Nov 2022 16:32:08 +1100
Subject: Use `ThinVec` in `ast::Impl` and related types.

---
 compiler/rustc_parse/src/parser/item.rs | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

(limited to 'compiler/rustc_parse/src')

diff --git a/compiler/rustc_parse/src/parser/item.rs b/compiler/rustc_parse/src/parser/item.rs
index f164bb330f3..43e449a258f 100644
--- a/compiler/rustc_parse/src/parser/item.rs
+++ b/compiler/rustc_parse/src/parser/item.rs
@@ -646,20 +646,20 @@ impl<'a> Parser<'a> {
         &mut self,
         attrs: &mut AttrVec,
         mut parse_item: impl FnMut(&mut Parser<'a>) -> PResult<'a, Option<Option<T>>>,
-    ) -> PResult<'a, Vec<T>> {
+    ) -> PResult<'a, ThinVec<T>> {
         let open_brace_span = self.token.span;
 
         // Recover `impl Ty;` instead of `impl Ty {}`
         if self.token == TokenKind::Semi {
             self.sess.emit_err(errors::UseEmptyBlockNotSemi { span: self.token.span });
             self.bump();
-            return Ok(vec![]);
+            return Ok(ThinVec::new());
         }
 
         self.expect(&token::OpenDelim(Delimiter::Brace))?;
         attrs.extend(self.parse_inner_attributes()?);
 
-        let mut items = Vec::new();
+        let mut items = ThinVec::new();
         while !self.eat(&token::CloseDelim(Delimiter::Brace)) {
             if self.recover_doc_comment_before_brace() {
                 continue;
-- 
cgit 1.4.1-3-g733a5