+ // FIXME(generic_const_exprs): this doesnt verify that given `Expr(N + 1)` the
+ // trait bound `typeof(N): Add<typeof(1)>` holds. This is currently unnecessary
+ // as `ConstKind::Expr` is only produced via normalization of `ConstKind::Unevaluated`
+ // which means that the `DefId` would have been typeck'd elsewhere. However in
+ // the future we may allow directly lowering to `ConstKind::Expr` in which case
+ // we would not be proving bounds we should.
+
+ let predicate =
+ ty::Binder::dummy(ty::PredicateKind::ConstEvaluatable(ct));
+ let cause = self.cause(traits::WellFormed(None));
+ self.out.push(traits::Obligation::with_depth(
+ self.tcx(),
+ cause,
+ self.recursion_depth,
+ self.param_env,
+ predicate,
+ ));