Fix -Wtype-limits warnings and remove disabling of -Wtype-limits

src/CMakeLists.txt

@@ -643,11 +643,6 @@ else()
 		if(HAS_UNUSED_BUT_SET_VARIABLE_WARNING)
 			set(WARNING_FLAGS "${WARNING_FLAGS} -Wno-unused-but-set-variable")
 		endif(HAS_UNUSED_BUT_SET_VARIABLE_WARNING)
-
-		CHECK_CXX_COMPILER_FLAG("-Wno-type-limits" HAS_TYPE_LIMITS_WARNING)
-		if(HAS_TYPE_LIMITS_WARNING)
-			set(WARNING_FLAGS "${WARNING_FLAGS} -Wno-type-limits")
-		endif(HAS_TYPE_LIMITS_WARNING)
 	endif()
 
 	if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")

src/connection.cpp

@@ -2334,6 +2334,11 @@ SharedBuffer<u8> ConnectionReceiveThread::processPacket(Channel *channel,
 
 	u8 type = readU8(&(packetdata[0]));
 
+	if (MAX_UDP_PEERS <= 65535 && peer_id >= MAX_UDP_PEERS) {
+		errorstream << "Something is wrong with peer_id" << std::endl;
+		assert(0);
+	}
+
 	if(type == TYPE_CONTROL)
 	{
 		if(packetdata.getSize() < 2)
@@ -2341,8 +2346,7 @@ SharedBuffer<u8> ConnectionReceiveThread::processPacket(Channel *channel,
 
 		u8 controltype = readU8(&(packetdata[1]));
 
-		if( (controltype == CONTROLTYPE_ACK)
+		if(controltype == CONTROLTYPE_ACK)
-				&& (peer_id <= MAX_UDP_PEERS))
 		{
 			assert(channel != 0);
 			if(packetdata.getSize() < 4)
@@ -2399,8 +2403,7 @@ SharedBuffer<u8> ConnectionReceiveThread::processPacket(Channel *channel,
 			}
 			throw ProcessedSilentlyException("Got an ACK");
 		}
-		else if((controltype == CONTROLTYPE_SET_PEER_ID)
+		else if(controltype == CONTROLTYPE_SET_PEER_ID)
-				&& (peer_id <= MAX_UDP_PEERS))
 		{
 			// Got a packet to set our peer id
 			if(packetdata.getSize() < 4)
@@ -2432,8 +2435,7 @@ SharedBuffer<u8> ConnectionReceiveThread::processPacket(Channel *channel,
 
 			throw ProcessedSilentlyException("Got a SET_PEER_ID");
 		}
-		else if((controltype == CONTROLTYPE_PING)
+		else if(controltype == CONTROLTYPE_PING)
-				&& (peer_id <= MAX_UDP_PEERS))
 		{
 			// Just ignore it, the incoming data already reset
 			// the timeout counter
@@ -2455,8 +2457,7 @@ SharedBuffer<u8> ConnectionReceiveThread::processPacket(Channel *channel,
 
 			throw ProcessedSilentlyException("Got a DISCO");
 		}
-		else if((controltype == CONTROLTYPE_ENABLE_BIG_SEND_WINDOW)
+		else if(controltype == CONTROLTYPE_ENABLE_BIG_SEND_WINDOW)
-				&& (peer_id <= MAX_UDP_PEERS))
 		{
 			dynamic_cast<UDPPeer*>(&peer)->setNonLegacyPeer();
 			throw ProcessedSilentlyException("Got non legacy control");
@@ -2514,7 +2515,7 @@ SharedBuffer<u8> ConnectionReceiveThread::processPacket(Channel *channel,
 			//TODO throw some error
 		}
 	}
-	else if((peer_id <= MAX_UDP_PEERS) && (type == TYPE_RELIABLE))
+	else if(type == TYPE_RELIABLE)
 	{
 		assert(channel != 0);
 		// Recursive reliable packets not allowed

src/map.cpp

@@ -1766,7 +1766,11 @@ void Map::transformLiquids(std::map<v3s16, MapBlock*> & modified_blocks)
 		content_t new_node_content;
 		s8 new_node_level = -1;
 		s8 max_node_level = -1;
-		u8 range = rangelim(nodemgr->get(liquid_kind).liquid_range, 0, LIQUID_LEVEL_MAX+1);
+
+		u8 range = nodemgr->get(liquid_kind).liquid_range;
+		if (range > LIQUID_LEVEL_MAX+1)
+			range = LIQUID_LEVEL_MAX+1;
+
 		if ((num_sources >= 2 && nodemgr->get(liquid_kind).liquid_renewable) || liquid_type == LIQUID_SOURCE) {
 			// liquid_kind will be set to either the flowing alternative of the node (if it's a liquid)
 			// or the flowing alternative of the first of the surrounding sources (if it's air), so

src/serialization.h

@@ -72,7 +72,9 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 // Lowest supported serialization version
 #define SER_FMT_VER_LOWEST 0
 
-#define ser_ver_supported(v) (v >= SER_FMT_VER_LOWEST && v <= SER_FMT_VER_HIGHEST_READ)
+inline bool ser_ver_supported(s32 v) {
+	return v >= SER_FMT_VER_LOWEST && v <= SER_FMT_VER_HIGHEST_READ;
+}
 
 /*
 	Misc. serialization functions

src/server.cpp

@@ -1361,7 +1361,7 @@ void Server::ProcessData(u8 *data, u32 datasize, u16 peer_id)
 		u8 client_max = data[2];
 		u8 our_max = SER_FMT_VER_HIGHEST_READ;
 		// Use the highest version supported by both
-		u8 deployed = std::min(client_max, our_max);
+		int deployed = std::min(client_max, our_max);
 		// If it's lower than the lowest supported, give up.
 		if(deployed < SER_FMT_VER_LOWEST)
 			deployed = SER_FMT_VER_INVALID;

src/tile.cpp

@@ -1859,7 +1859,7 @@ void imageTransform(u32 transform, video::IImage *src, video::IImage *dst)
 	core::dimension2d<u32> dstdim = dst->getDimension();
 
 	assert(dstdim == imageTransformDimension(transform, srcdim));
-	assert(transform >= 0 && transform <= 7);
+	assert(transform <= 7);
 
 	/*
 		Compute the transformation from source coordinates (sx,sy)