bjoernager/rust
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Gate against auto traits pre-expansion

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This commit is contained in:
Michael Goulet 2023-10-03 19:06:17 +00:00
parent 5333b878c8
commit 7815641be0
5 changed files with 29 additions and 1 deletions
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7
compiler/rustc_parse/src/parser/item.rs
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@ -813,7 +813,12 @@ impl<'a> Parser<'a> {
fn parse_item_trait(&mut self, attrs: &mut AttrVec, lo: Span) -> PResult<'a, ItemInfo> {
let unsafety = self.parse_unsafety(Case::Sensitive);
// Parse optional `auto` prefix.
let is_auto = if self.eat_keyword(kw::Auto) { IsAuto::Yes } else { IsAuto::No };
let is_auto = if self.eat_keyword(kw::Auto) {
self.sess.gated_spans.gate(sym::auto_traits, self.prev_token.span);
IsAuto::Yes
} else {
IsAuto::No
};
self.expect_keyword(kw::Trait)?;
let ident = self.parse_ident()?;