From ee7591b930c06449f5532f3e9c81cdfd8429636b Mon Sep 17 00:00:00 2001
From: Jakub Szuppe <j.szuppe@gmail.com>
Date: Sat, 18 Mar 2017 15:19:57 +0100
Subject: [PATCH] Fix: snprintf is in VS only since VS2015

---
 include/boost/compute/detail/parameter_cache.hpp | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/include/boost/compute/detail/parameter_cache.hpp b/include/boost/compute/detail/parameter_cache.hpp
index 0a16cd9b..c609490c 100644
--- a/include/boost/compute/detail/parameter_cache.hpp
+++ b/include/boost/compute/detail/parameter_cache.hpp
@@ -24,6 +24,7 @@
 #include <boost/compute/version.hpp>
 
 #ifdef BOOST_COMPUTE_USE_OFFLINE_CACHE
+#include <cstdio>  
 #include <boost/algorithm/string/trim.hpp>
 #include <boost/compute/detail/path.hpp>
 #include <boost/property_tree/ptree.hpp>
@@ -117,9 +118,16 @@ private:
     static std::string version_string()
     {
         char buf[32];
-        std::snprintf(buf, sizeof(buf), "%d.%d.%d", BOOST_COMPUTE_VERSION_MAJOR,
-                                                    BOOST_COMPUTE_VERSION_MINOR,
-                                                    BOOST_COMPUTE_VERSION_PATCH);
+        // snprintf is in Visual Studio since Visual Studio 2015 (_MSC_VER == 1900)
+        #if defined (_MSC_VER) && _MSC_VER < 1900
+            #define DETAIL_SNPRINTF sprintf_s
+        #else
+            #define DETAIL_SNPRINTF std::snprintf
+        #endif
+        DETAIL_SNPRINTF(buf, sizeof(buf), "%d.%d.%d", BOOST_COMPUTE_VERSION_MAJOR,
+                                                      BOOST_COMPUTE_VERSION_MINOR,
+                                                      BOOST_COMPUTE_VERSION_PATCH);
+        #undef DETAIL_SNPRINTF
         return buf;
     }