From 5b51b119ca16fe42d63896da8395a5d05bfa9877 Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby-lang.org>
Date: Mon, 18 Nov 2013 22:51:51 +0900
Subject: ci->err may be out of boud; close #1583

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

(limited to 'src')

diff --git a/src/backtrace.c b/src/backtrace.c
index 54927ec00..7c86d962e 100644
--- a/src/backtrace.c
+++ b/src/backtrace.c
@@ -81,7 +81,7 @@ mrb_output_backtrace(mrb_state *mrb, struct RObject *exc, output_stream_func fun
       mrb_irep *irep = ci->proc->body.irep;
       mrb_code *pc;
 
-      if (mrb->c->cibase[i].err) {
+      if (mrb->c->cibase[i].err && irep && mrb->c->cibase[i].err - irep->iseq < irep->ilen) {
         pc = mrb->c->cibase[i].err;
       }
       else if (i+1 <= ciidx) {
-- 
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