Remove an unchecked_error_guaranteed
call.
If we abort immediately after complaining about the obsolete `impl Trait for ..` syntax, then we avoid reaching HIR lowering. This means we can use `TyKind::Dummy` instead of `TyKind::Err`.
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2 changed files with 8 additions and 19 deletions
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@ -881,9 +881,10 @@ impl<'a> Visitor<'a> for AstValidator<'a> {
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&item.vis,
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errors::VisibilityNotPermittedNote::TraitImpl,
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);
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// njn: use Dummy here
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if let TyKind::Err(_) = self_ty.kind {
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this.dcx().emit_err(errors::ObsoleteAuto { span: item.span });
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if let TyKind::Dummy = self_ty.kind {
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// Abort immediately otherwise the `TyKind::Dummy` will reach HIR lowering,
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// which isn't allowed. Not a problem for this obscure, obsolete syntax.
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this.dcx().emit_fatal(errors::ObsoleteAuto { span: item.span });
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}
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if let (&Unsafe::Yes(span), &ImplPolarity::Negative(sp)) = (unsafety, polarity)
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{
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