From a95b6d34aa41fc288422989010b240877d1e1a4b Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby.or.jp>
Date: Fri, 2 Mar 2018 10:06:22 +0900
Subject: Round up the `dstlen` value; fix #3949

The fix was proposed by https://hackerone.com/aerodudrizzt
---
 mrbgems/mruby-pack/src/pack.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'mrbgems/mruby-pack/src')

diff --git a/mrbgems/mruby-pack/src/pack.c b/mrbgems/mruby-pack/src/pack.c
index a3ea77517..d96ef1002 100644
--- a/mrbgems/mruby-pack/src/pack.c
+++ b/mrbgems/mruby-pack/src/pack.c
@@ -729,7 +729,7 @@ pack_m(mrb_state *mrb, mrb_value src, mrb_value dst, mrb_int didx, long count, u
     count -= count % 3;
   }
 
-  dstlen = srclen / 3 * 4;
+  dstlen = (srclen+2) / 3 * 4;
   if (count > 0) {
     dstlen += (srclen / count) + ((srclen % count) == 0 ? 0 : 1);
   }
-- 
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