From 0e46b14b9e8cece4fd75b003a7a3391116dd6eee Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby.or.jp>
Date: Wed, 6 Dec 2017 17:22:20 +0900
Subject: The `ci` should not be equal to `cibase` with `OP_R_BREAK`; #3871

---
 src/vm.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'src')

diff --git a/src/vm.c b/src/vm.c
index 7edbdf3cb..bad4810ed 100644
--- a/src/vm.c
+++ b/src/vm.c
@@ -2065,6 +2065,9 @@ RETRY_TRY_BLOCK:
             }
             ci--;
           }
+          if (ci == mrb->c->cibase) {
+            goto L_BREAK_ERROR;
+          }
           break;
         default:
           /* cannot happen */
-- 
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