fix warning C4996 under vs2015 about std::copy in fmt

include/spdlog/fmt/fmt.h

@@ -14,6 +14,14 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wimplicit-fallthrough"
 #pragma GCC diagnostic ignored "-Wsign-conversion"
+#endif // __GNUC__ || __clang__
+
+
+
+// fix warning C4996 under vs2015 about std::copy in fmt
+#if defined(_MSC_VER) && _MSC_VER <= 1900
+#pragma warning( push )
+#pragma warning( disable : 4996 )
 #endif 
 
 #if !defined(SPDLOG_FMT_EXTERNAL)
@@ -32,6 +40,11 @@
 #include <fmt/format.h>
 #endif
 
+// pop warnings supressions
 #if defined(__GNUC__) || defined(__clang__)
 #pragma GCC diagnostic pop
 #endif
+
+#if defined(_MSC_VER) && _MSC_VER <= 1900
+#pragma warning( pop )
+#endif

src/fmt.cpp

@@ -12,13 +12,26 @@
 #pragma GCC diagnostic ignored "-Wsign-conversion"
 #endif
 
+// fix warning C4996 under vs2015 about std::copy in fmt
+#if defined(_MSC_VER) && _MSC_VER <= 1900
+#pragma warning( push )
+#pragma warning( disable : 4996 )
+#endif 
+
 #if !defined(SPDLOG_FMT_EXTERNAL)
 #include "spdlog/fmt/bundled/format-inl.h"
 
+
+// pop warnings supressions
+
 #if defined(__GNUC__) || defined(__clang__)
 #pragma GCC diagnostic pop
 #endif
 
+#if defined(_MSC_VER) && _MSC_VER <= 1900
+#pragma warning( pop )
+#endif
+
 
 FMT_BEGIN_NAMESPACE
 template struct FMT_API internal::basic_data<void>;