From: Dr. Stephen Henson <steve@openssl.org>
Date: Fri, 12 Jun 2015 21:18:36 +0000 (+0100)
Subject: Encode b == NULL or blen == 0 as zero.
X-Git-Tag: OpenSSL_1_1_0-pre1~993
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=f2dc4d517fa11208b90ba0e92a2590f8cfdafb28;p=openssl

Encode b == NULL or blen == 0 as zero.

PR#3904

Reviewed-by: Rich Salz <rsalz@openssl.org>
---

diff --git a/crypto/asn1/a_int.c b/crypto/asn1/a_int.c
index 9a58378b8a..0d020e0c13 100644
--- a/crypto/asn1/a_int.c
+++ b/crypto/asn1/a_int.c
@@ -158,8 +158,8 @@ static size_t i2c_ibuf(const unsigned char *b, size_t blen, int neg,
 
     if (pad)
         *(p++) = pb;
-    if (blen == 0)
-        *(p++) = 0;
+    if (b == NULL || blen == 0)
+        *p = 0;
     else if (!neg)
         memcpy(p, b, blen);
     else {