bjoernager/rust
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Introduce const Trait (always-const trait bounds)

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This commit is contained in:
León Orell Valerian Liehr 2023-12-18 17:55:55 +01:00
parent 2fe50cd72c
commit 3eb48a35c8
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GPG key ID: D17A07215F68E713
69 changed files with 505 additions and 223 deletions
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7
compiler/rustc_ast_passes/src/ast_validation.rs
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@ -1207,6 +1207,9 @@ impl<'a> Visitor<'a> for AstValidator<'a> {
(BoundKind::TraitObject, BoundConstness::Never, BoundPolarity::Maybe(_)) => {
self.dcx().emit_err(errors::OptionalTraitObject { span: poly.span });
}
(BoundKind::TraitObject, BoundConstness::Always(_), BoundPolarity::Positive) => {
self.dcx().emit_err(errors::ConstBoundTraitObject { span: poly.span });
}
(_, BoundConstness::Maybe(span), BoundPolarity::Positive)
if let Some(reason) = &self.disallow_tilde_const =>
{
@ -1237,8 +1240,8 @@ impl<'a> Visitor<'a> for AstValidator<'a> {
}
(
_,
BoundConstness::Maybe(_),
BoundPolarity::Maybe(_) | BoundPolarity::Negative(_),
BoundConstness::Always(_) | BoundConstness::Maybe(_),
BoundPolarity::Negative(_) | BoundPolarity::Maybe(_),
) => {
self.dcx().emit_err(errors::IncompatibleTraitBoundModifiers {
span: bound.span(),