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-rw-r--r--kernel/declareops.ml5
1 files changed, 3 insertions, 2 deletions
diff --git a/kernel/declareops.ml b/kernel/declareops.ml
index 3083c17389..8eae2aed8e 100644
--- a/kernel/declareops.ml
+++ b/kernel/declareops.ml
@@ -52,7 +52,8 @@ let subst_const_type sub arity = match arity with
let subst_const_def sub def = match def with
| Undef _ -> def
| Def c -> Def (subst_constr_subst sub c)
- | OpaqueDef lc -> OpaqueDef (Future.chain lc (subst_lazy_constr sub))
+ | OpaqueDef lc ->
+ OpaqueDef (Future.chain ~pure:true lc (subst_lazy_constr sub))
(* TODO : the native compiler seems to rely on a fresh (ref NotLinked)
being created at each substitution. Quite ugly... For the moment,
@@ -99,7 +100,7 @@ let hcons_const_def = function
Def (from_val (Term.hcons_constr constr))
| OpaqueDef lc ->
OpaqueDef
- (Future.chain lc
+ (Future.chain ~pure:true lc
(fun lc -> opaque_from_val (Term.hcons_constr (force_opaque lc))))
let hcons_const_body cb =