From 678c39dc44d821ed1ecf8694cf254a21af0be527 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Fri, 13 May 2016 14:56:32 +0000
Subject: random.c: clear buf

* random.c (random_seed): clear temporary buffer explicitly.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54994 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 random.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/random.c b/random.c
index a3476d5203..f9f087ce5a 100644
--- a/random.c
+++ b/random.c
@@ -600,9 +600,12 @@ make_seed_value(const uint32_t *ptr)
 static VALUE
 random_seed(void)
 {
+    VALUE v;
     uint32_t buf[DEFAULT_SEED_CNT];
     fill_random_seed(buf);
-    return make_seed_value(buf);
+    v = make_seed_value(buf);
+    explicit_bzero(buf, DEFAULT_SEED_LEN);
+    return v;
 }
 
 /*
-- 
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