bjoernager/rust
bjoernager/rust
1
Fork 0
Code Issues Pull requests Activity

Auto merge of #97039 - cjgillot:no-rpit-hrtb, r=jackh726

Browse source 
Forbid nested opaque types to reference HRTB from opaque types.

Avoids https://github.com/rust-lang/rust/issues/96194
Alternative to https://github.com/rust-lang/rust/pull/96970

r? `@oli-obk`
This commit is contained in:
bors 2022-05-14 15:47:22 +00:00
commit b36be12d97
13 changed files with 235 additions and 98 deletions
Download patch file Download diff file Expand all files Collapse all files

14
compiler/rustc_resolve/src/late/lifetimes.rs
View file

@ -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,