From 898ed2ffa6c485530af1fbe6117c0deb4290715f Mon Sep 17 00:00:00 2001 From: Michael Goulet Date: Wed, 10 Jul 2024 17:49:50 -0400 Subject: Enforce that ? and for<...> are not combined --- compiler/rustc_parse/src/parser/ty.rs | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'compiler/rustc_parse/src/parser') diff --git a/compiler/rustc_parse/src/parser/ty.rs b/compiler/rustc_parse/src/parser/ty.rs index 306029ca94c..6de778fa9f2 100644 --- a/compiler/rustc_parse/src/parser/ty.rs +++ b/compiler/rustc_parse/src/parser/ty.rs @@ -994,6 +994,19 @@ impl<'a> Parser<'a> { let modifiers = self.parse_trait_bound_modifiers()?; let modifiers_span = modifiers_lo.to(self.prev_token.span); + if let Some(binder_span) = binder_span { + match modifiers.polarity { + BoundPolarity::Negative(polarity_span) | BoundPolarity::Maybe(polarity_span) => { + self.dcx().emit_err(errors::BinderAndPolarity { + binder_span, + polarity_span, + polarity: modifiers.polarity.as_str(), + }); + } + BoundPolarity::Positive => {} + } + } + // Recover erroneous lifetime bound with modifiers or binder. // e.g. `T: for<'a> 'a` or `T: ~const 'a`. if self.token.is_lifetime() { -- cgit 1.4.1-3-g733a5