From 87a392067a831dae3e4afdb23b99e13a6d424a3b Mon Sep 17 00:00:00 2001
From: nanami <wangzhe.nanami@gmail.com>
Date: Sun, 15 Dec 2013 22:25:59 +0800
Subject: Fixed callinfo buffer overflow while calling ensure handlers

---
 src/vm.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

(limited to 'src')

diff --git a/src/vm.c b/src/vm.c
index 0d6318685..60933d8f3 100644
--- a/src/vm.c
+++ b/src/vm.c
@@ -1287,10 +1287,12 @@ mrb_context_run(mrb_state *mrb, struct RProc *proc, mrb_value self, unsigned int
             mrb->jmp = prev_jmp;
             mrb_longjmp(mrb);
           }
-          while (eidx > ci[-1].eidx) {
-            ecall(mrb, --eidx);
+          if (ci > mrb->c->cibase) {
+            while (eidx > ci[-1].eidx) {
+              ecall(mrb, --eidx);
+            }
           }
-          if (ci == mrb->c->cibase) {
+          else if (ci == mrb->c->cibase) {
             if (ci->ridx == 0) {
               regs = mrb->c->stack = mrb->c->stbase;
               goto L_STOP;
-- 
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