bjoernager/rust
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Forbid nested opaque types to reference HRTB from opaque types.

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This commit is contained in:
Camille GILLOT 2022-05-14 11:25:53 +02:00
parent c31879922e
commit b276b65f46
11 changed files with 89 additions and 98 deletions
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14
compiler/rustc_resolve/src/late/lifetimes.rs
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@ -1025,6 +1025,20 @@ impl<'a, 'tcx> Visitor<'tcx> for LifetimeContext<'a, 'tcx> {
}
self.uninsert_lifetime_on_error(lifetime, def.unwrap());
}
if let hir::Node::Item(hir::Item {
kind: hir::ItemKind::OpaqueTy { .. }, ..
}) = self.tcx.hir().get(parent_id)
{
if !self.trait_definition_only {
let mut err = self.tcx.sess.struct_span_err(
lifetime.span,
"higher kinded lifetime bounds on nested opaque types are not supported yet",
);
err.span_note(self.tcx.def_span(def_id), "lifetime declared here");
err.emit();
}
self.uninsert_lifetime_on_error(lifetime, def.unwrap());
}
}
// We want to start our early-bound indices at the end of the parent scope,