making strong_typedef::UnderlyingType constexpr and warnigs cleanup

Jamfile

@@ -276,6 +276,9 @@ rule warnings ( properties * )
 		result += <cflags>/wd4275 ;
 # disable warning C4373: virtual function overrides, previous versions of the compiler did not override when parameters only differed by const/volatile qualifiers
 		result += <cflags>/wd4373 ;
+		# C4268: 'identifier' : 'const' static/global data initialized
+		#        with compiler generated default constructor fills the object with zeros
+		result += <cflags>/wd4268 ;
 	}
 
 	return $(result) ;

include/libtorrent/peer_class_type_filter.hpp

@@ -67,10 +67,8 @@ namespace libtorrent
 		// to new peers based on socket type.
 		void add(socket_type_t st, peer_class_t const peer_class)
 		{
-			TORRENT_ASSERT(peer_class >= peer_class_t{0});
 			TORRENT_ASSERT(peer_class < peer_class_t{32});
-			if (peer_class < peer_class_t{0}
-				|| peer_class > peer_class_t{31}) return;
+			if (peer_class > peer_class_t{31}) return;
 
 			TORRENT_ASSERT(st < num_socket_types && st >= 0);
 			if (st < 0 || st >= num_socket_types) return;
@@ -78,10 +76,8 @@ namespace libtorrent
 		}
 		void remove(socket_type_t st, peer_class_t const peer_class)
 		{
-			TORRENT_ASSERT(peer_class >= peer_class_t{0});
 			TORRENT_ASSERT(peer_class < peer_class_t{32});
-			if (peer_class < peer_class_t{0}
-				|| peer_class > peer_class_t{31}) return;
+			if (peer_class > peer_class_t{31}) return;
 
 			TORRENT_ASSERT(st < num_socket_types && st >= 0);
 			if (st < 0 || st >= num_socket_types) return;
@@ -95,10 +91,8 @@ namespace libtorrent
 		// peer classes in the ``peer_class_type_filter`` are 32 bits.
 		void disallow(socket_type_t st, peer_class_t const peer_class)
 		{
-			TORRENT_ASSERT(peer_class >= peer_class_t{0});
 			TORRENT_ASSERT(peer_class < peer_class_t{32});
-			if (peer_class < peer_class_t{0}
-				|| peer_class > peer_class_t{31}) return;
+			if (peer_class > peer_class_t{31}) return;
 
 			TORRENT_ASSERT(st < num_socket_types && st >= 0);
 			if (st < 0 || st >= num_socket_types) return;
@@ -106,10 +100,8 @@ namespace libtorrent
 		}
 		void allow(socket_type_t st, peer_class_t const peer_class)
 		{
-			TORRENT_ASSERT(peer_class >= peer_class_t{0});
 			TORRENT_ASSERT(peer_class < peer_class_t{32});
-			if (peer_class < peer_class_t{0}
-				|| peer_class > peer_class_t{31}) return;
+			if (peer_class > peer_class_t{31}) return;
 
 			TORRENT_ASSERT(st < num_socket_types && st >= 0);
 			if (st < 0 || st >= num_socket_types) return;
@@ -142,4 +134,3 @@ namespace libtorrent
 }
 
 #endif
-

include/libtorrent/piece_block_progress.hpp

@@ -34,19 +34,13 @@ POSSIBILITY OF SUCH DAMAGE.
 #define TORRENT_PIECE_BLOCK_PROGRESS_HPP_INCLUDED
 
 #include "libtorrent/config.hpp"
+#include "libtorrent/units.hpp"
 
 namespace libtorrent
 {
 	struct piece_block_progress
 	{
-#ifdef _MSC_VER
-#pragma warning(push, 1)
-#pragma warning(disable : 4268)
-#endif
 		constexpr static piece_index_t invalid_index{-1};
-#ifdef _MSC_VER
-#pragma warning(pop)
-#endif
 
 		// the piece and block index
 		// determines exactly which

include/libtorrent/piece_picker.hpp

@@ -572,20 +572,11 @@ namespace libtorrent
 			std::set<const torrent_peer*> have_peers;
 #endif
 
-#ifdef _MSC_VER
-#pragma warning(push, 1)
-#pragma warning(disable : 4268)
-#endif
-
 			// index is set to this to indicate that we have the
 			// piece. There is no entry for the piece in the
 			// buckets if this is the case.
 			constexpr static prio_index_t we_have_index{-1};
 
-#ifdef _MSC_VER
-#pragma warning(pop)
-#endif
-
 			enum : std::uint32_t
 			{
 				// the priority value that means the piece is filtered

include/libtorrent/session_handle.hpp

@@ -577,20 +577,11 @@ namespace libtorrent
 		// peer potentially across you changing your IP.
 		void set_key(int key);
 
-#ifdef _MSC_VER
-#pragma warning(push, 1)
-#pragma warning(disable : 4268)
-#endif
-
 		// built-in peer classes
 		static constexpr peer_class_t global_peer_class_id{0};
 		static constexpr peer_class_t tcp_peer_class_id{1};
 		static constexpr peer_class_t local_peer_class_id{2};
 
-#ifdef _MSC_VER
-#pragma warning(pop)
-#endif
-
 		// ``is_listening()`` will tell you whether or not the session has
 		// successfully opened a listening port. If it hasn't, this function will
 		// return false, and then you can set a new

include/libtorrent/torrent_status.hpp

@@ -128,11 +128,6 @@ namespace libtorrent
 
 		file_index_t error_file = torrent_status::error_file_none;
 
-#ifdef _MSC_VER
-#pragma warning(push, 1)
-#pragma warning(disable : 4268)
-#endif
-
 		// special values for error_file to describe which file or component
 		// encountered the error (``errc``).
 		// the error did not occur on a file
@@ -152,10 +147,6 @@ namespace libtorrent
 		// or a torrent log alert may provide more information.
 		static constexpr file_index_t error_file_exception{-5};
 
-#ifdef _MSC_VER
-#pragma warning(pop)
-#endif
-
 		// the path to the directory where this torrent's files are stored.
 		// It's typically the path as was given to async_add_torrent() or
 		// add_torrent() when this torrent was started. This field is only

include/libtorrent/units.hpp

@@ -58,7 +58,7 @@ namespace aux {
 		strong_typedef() = default;
 #ifndef TORRENT_NO_DEPRECATE
 		constexpr strong_typedef(UnderlyingType val) : m_val(val) {}
-		operator UnderlyingType() const { return m_val; }
+		constexpr operator UnderlyingType() const { return m_val; }
 #else
 		constexpr explicit strong_typedef(UnderlyingType val) : m_val(val) {}
 		constexpr explicit operator UnderlyingType() const { return m_val; }