From 36a1c80d3ce37c7b5202a4415e0a8ab8ebe677d6 Mon Sep 17 00:00:00 2001
From: Yukihiro Matsumoto <matz@ruby-lang.org>
Date: Thu, 14 Jun 2012 03:44:45 +0900
Subject: uvenv(): proc->env may be NULL be before uplevel

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

(limited to 'src/vm.c')

diff --git a/src/vm.c b/src/vm.c
index ef3535d53..e229a4a54 100644
--- a/src/vm.c
+++ b/src/vm.c
@@ -94,8 +94,8 @@ uvenv(mrb_state *mrb, int up)
 {
   struct REnv *e = mrb->ci->proc->env;
 
-  if (!e) return 0;
   while (up--) {
+    if (!e) return 0;
     e = (struct REnv*)e->c;
   }
   return e;
-- 
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