From cc4e644e08e9217dd3c8fc347bfde7012a2508ac Mon Sep 17 00:00:00 2001
From: Kazuki Yamaguchi <k@rhe.jp>
Date: Wed, 13 Apr 2016 00:08:25 +0900
Subject: ossl_##keytype##_get_##name: return Qnil if BIGNUM is NULL

---
 ext/openssl/ossl_pkey.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/ext/openssl/ossl_pkey.h b/ext/openssl/ossl_pkey.h
index 6c115179dc..6eb51a76bd 100644
--- a/ext/openssl/ossl_pkey.h
+++ b/ext/openssl/ossl_pkey.h
@@ -114,7 +114,10 @@ static VALUE ossl_##keytype##_get_##name(VALUE self)			\
 	GetPKey(self, pkey);						\
 	obj = EVP_PKEY_get0_##type(pkey);				\
 	get;								\
-	return ossl_bn_new(name);					\
+	if (name)							\
+		return ossl_bn_new(name);				\
+	else								\
+		return Qnil;						\
 }									\
 /*									\
  *  call-seq:								\
-- 
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