From 9cb43f988327984a98d7a72c8ab32a72996f71f0 Mon Sep 17 00:00:00 2001
From: XMRig <support@xmrig.com>
Date: Fri, 29 Mar 2019 17:22:25 +0700
Subject: [PATCH] Fix log.

---
 src/base/io/log/Log.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/base/io/log/Log.cpp b/src/base/io/log/Log.cpp
index 4a2a8de6..487cd9b8 100644
--- a/src/base/io/log/Log.cpp
+++ b/src/base/io/log/Log.cpp
@@ -93,12 +93,12 @@ public:
         timestamp(level, size, offset);
         color(level, size);
 
-        int rc = vsnprintf(m_buf + size, sizeof (m_buf) - offset - 32, fmt, args);
+        const int rc = vsnprintf(m_buf + size, sizeof (m_buf) - offset - 32, fmt, args);
         if (rc < 0) {
             return unlock();
         }
 
-        size += static_cast<size_t>(rc);
+        size += std::min(static_cast<size_t>(rc), sizeof (m_buf) - offset - 32);
         endl(size);
 
         std::string txt(m_buf);