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Check allow instantiating object trait binder when upcasting and in new solver

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This commit is contained in:
Michael Goulet 2024-09-25 19:19:22 -04:00
parent 58420a065b
commit d4ee408afc
8 changed files with 70 additions and 51 deletions
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6
compiler/rustc_trait_selection/src/traits/select/mod.rs
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@ -2582,12 +2582,12 @@ impl<'tcx> SelectionContext<'_, 'tcx> {
nested.extend(
self.infcx
.at(&obligation.cause, obligation.param_env)
.eq(
.sup(
DefineOpaqueTypes::Yes,
bound.rebind(target_principal),
upcast_principal.map_bound(|trait_ref| {
ty::ExistentialTraitRef::erase_self_ty(tcx, trait_ref)
}),
bound.rebind(target_principal),
)
.map_err(|_| SelectionError::Unimplemented)?
.into_obligations(),
@ -2620,7 +2620,7 @@ impl<'tcx> SelectionContext<'_, 'tcx> {
nested.extend(
self.infcx
.at(&obligation.cause, obligation.param_env)
.eq(DefineOpaqueTypes::Yes, source_projection, target_projection)
.sup(DefineOpaqueTypes::Yes, target_projection, source_projection)
.map_err(|_| SelectionError::Unimplemented)?
.into_obligations(),
);