From 0e5394638bd6f8fa8c52fa4f75c4c1799adb70e0 Mon Sep 17 00:00:00 2001
From: Rory OConnell <19547+RoryO@users.noreply.github.com>
Date: Mon, 13 Jul 2020 17:05:03 -0700
Subject: Validate ensure stack presense before calculating

---
 mrbgems/mruby-objectspace/src/mruby_objectspace.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

(limited to 'mrbgems/mruby-objectspace/src/mruby_objectspace.c')

diff --git a/mrbgems/mruby-objectspace/src/mruby_objectspace.c b/mrbgems/mruby-objectspace/src/mruby_objectspace.c
index f28336b95..d5ffa83f1 100644
--- a/mrbgems/mruby-objectspace/src/mruby_objectspace.c
+++ b/mrbgems/mruby-objectspace/src/mruby_objectspace.c
@@ -324,8 +324,10 @@ os_memsize_of_object(mrb_state* mrb, mrb_value obj, mrb_bool recurse, mrb_int* t
         ci_p++;
       }
 
-      for(i = 0; i <= f->cxt->esize; i++) {
-         os_memsize_of_irep(mrb, f->cxt->ensure[i]->body.irep, t);
+      if(f->cxt->esize) {
+        for(i = 0; i <= f->cxt->esize; i++) {
+          os_memsize_of_irep(mrb, f->cxt->ensure[i]->body.irep, t);
+        }
       }
 
       (*t) += mrb_objspace_page_slot_size() +
-- 
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