end
| WELam (weakExprVar ev vt) e => weakTypeOfWeakExpr e >>= fun t' => OK (WAppTy (WAppTy WFunTyCon vt) t')
| WETyLam tv e => weakTypeOfWeakExpr e >>= fun t' => OK (WForAllTy tv t')
- | WECoLam (weakCoerVar cv φ₁ φ₂) e => weakTypeOfWeakExpr e >>= fun t' => OK (WCoFunTy φ₁ φ₂ t')
+ | WECoLam (weakCoerVar cv _ φ₁ φ₂) e => weakTypeOfWeakExpr e >>= fun t' => OK (WCoFunTy φ₁ φ₂ t')
| WELet ev ve e => weakTypeOfWeakExpr e
| WELetRec rb e => weakTypeOfWeakExpr e
| WENote n e => weakTypeOfWeakExpr e
- | WECast e (weakCoercion t1 t2 _) => OK t2
+ | WECast e (weakCoercion _ t1 t2 _) => OK t2
| WECase scrutinee tbranches tc type_params alts => OK tbranches
(* note that we willfully ignore the type stashed in WEBrak/WEEsc here *)