From: Hubert Kario <hkario@redhat.com>
Date: Fri, 29 Sep 2017 11:27:32 +0000 (+0200)
Subject: doc: BN_free() is NULL-safe
X-Git-Tag: OpenSSL_1_0_2m~23
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=20d2aaf22e54d07ead144c5e79fdaf6903cdbf2d;p=oweals%2Fopenssl.git

doc: BN_free() is NULL-safe

document that parameter to BN_free can be NULL

backport from master

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/4439)
---

diff --git a/doc/crypto/BN_new.pod b/doc/crypto/BN_new.pod
index ab7a105e3a..413a1ea842 100644
--- a/doc/crypto/BN_new.pod
+++ b/doc/crypto/BN_new.pod
@@ -30,6 +30,7 @@ to the value 0.
 BN_free() frees the components of the B<BIGNUM>, and if it was created
 by BN_new(), also the structure itself. BN_clear_free() additionally
 overwrites the data before the memory is returned to the system.
+If B<a> is NULL, nothing is done.
 
 =head1 RETURN VALUES