From bcc3fcf9419894c276ad704ad932ace8583351f1 Mon Sep 17 00:00:00 2001
From: Pieter Lexis <pieter.lexis@powerdns.com>
Date: Thu, 25 Feb 2016 12:48:48 +0100
Subject: [PATCH] Silence a BIO_write warning

---
 pdns/base64.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/pdns/base64.cc b/pdns/base64.cc
index 6a0ca12f68..9575b1c090 100644
--- a/pdns/base64.cc
+++ b/pdns/base64.cc
@@ -44,7 +44,8 @@ std::string Base64Encode(const std::string& src)
     bio = BIO_new(BIO_s_mem());
     bio = BIO_push(b64, bio);
     BIO_set_flags(bio, BIO_FLAGS_BASE64_NO_NL);
-    if (BIO_write(bio, src.c_str(), src.length()) != src.length()) {
+    int bioWriteRet = BIO_write(bio, src.c_str(), src.length());
+    if (bioWriteRet < 0 || (size_t) bioWriteRet != src.length()) {
       BIO_free_all(bio);
       throw std::runtime_error("BIO_write failed to write all data to memory buffer");
     }
-- 
2.47.2