From f0040b537136e8f36ff3a6de2508ca8c7c8974a6 Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby-lang.org>
Date: Thu, 30 Jul 2015 16:46:31 +0900
Subject: vm: execute ensure without exception at the top of the fiber; fix
 #2904

---
 src/vm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/vm.c b/src/vm.c
index 765512a34..025b487bc 100644
--- a/src/vm.c
+++ b/src/vm.c
@@ -1032,7 +1032,7 @@ RETRY_TRY_BLOCK:
       mrb_callinfo *ci = mrb->c->ci;
       int n, eidx = ci->eidx;
 
-      for (n=0; n<a && eidx > ci[-1].eidx; n++) {
+      for (n=0; n<a && (ci == mrb->c->cibase || eidx > ci[-1].eidx); n++) {
         ecall(mrb, --eidx);
         ARENA_RESTORE(mrb, ai);
       }
-- 
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