From d969f8621de905b48460d33324c7768d083b130d Mon Sep 17 00:00:00 2001
From: Mattias Jernberg <mattiasj@axis.com>
Date: Mon, 8 Jul 2019 12:15:59 +0200
Subject: [PATCH] Fix syslog output

payload does not appear to be reliably null terminated and leaks
data. Use size to the formatter to reliably terminate messages.
---
 include/spdlog/sinks/syslog_sink.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/spdlog/sinks/syslog_sink.h b/include/spdlog/sinks/syslog_sink.h
index 5f690d3d..ccc70693 100644
--- a/include/spdlog/sinks/syslog_sink.h
+++ b/include/spdlog/sinks/syslog_sink.h
@@ -59,7 +59,8 @@ protected:
             payload = msg.payload;
         }
 
-        ::syslog(syslog_prio_from_level(msg), "%s", payload.data());
+        int length = std::min<std::common_type<int, std::size_t>::type>(std::numeric_limits<int>::max(), payload.size());
+        ::syslog(syslog_prio_from_level(msg), "%.*s", length, payload.data());
     }
 
     void flush_() override {}