1 files changed, 1 insertions, 5 deletions
diff --git a/src/state.c b/src/state.c
index ff0182f22..9c40c842c 100644
--- a/src/state.c
+++ b/src/state.c
@@ -29,15 +29,11 @@ mrb_open_core(mrb_allocf f, void *ud)
   static const struct mrb_context mrb_context_zero = { 0 };
   mrb_state *mrb;
 
-#ifdef MRB_NAN_BOXING
-  mrb_static_assert(sizeof(void*) == 4, "when using NaN boxing sizeof pointer must be 4 byte");
-#endif
-
   mrb = (mrb_state *)(f)(NULL, NULL, sizeof(mrb_state), ud);
   if (mrb == NULL) return NULL;
 
   *mrb = mrb_state_zero;
-  mrb->ud = ud;
+  mrb->allocf_ud = ud;
   mrb->allocf = f;
   mrb->current_white_part = MRB_GC_WHITE_A;
   mrb->atexit_stack_len = 0;