bjoernager/rust
bjoernager/rust
1
Fork 0
Code Activity

Only allow ~const bounds for traits with #[const_trait]

Browse source
This commit is contained in:
Oli Scherer 2022-10-03 17:08:42 +00:00
parent d9f8b4b985
commit 33bcea8f61
34 changed files with 192 additions and 83 deletions
Download patch file Download diff file Expand all files Collapse all files

4
compiler/rustc_trait_selection/src/traits/wf.rs
View file

@ -308,6 +308,10 @@ impl<'tcx> WfPredicates<'tcx> {
let obligations = if trait_pred.constness == ty::BoundConstness::NotConst {
self.nominal_obligations_without_const(trait_ref.def_id, trait_ref.substs)
} else {
if !tcx.has_attr(trait_ref.def_id, rustc_span::sym::const_trait) {
tcx.sess
.span_err(self.span, "~const can only be applied to `#[const_trait]` traits");
}
self.nominal_obligations(trait_ref.def_id, trait_ref.substs)
};