xml read: fixed bug and added temporary OPTIONAL to tiles tag

Signed-off-by: Alessandro Comodi <[email protected]>

Author: acomodi

libs/libarchfpga/src/read_xml_arch_file.cpp

@@ -243,7 +243,7 @@ void XmlReadArch(const char *ArchFile, const bool timing_enabled,
         CreateModelLibrary(arch);
 
         /* Process tiles */
-        Next = get_single_child(architecture, "tiles", loc_data);
+        Next = get_single_child(architecture, "tiles", loc_data, OPTIONAL);
         ProcessTiles(Next, arch, loc_data);
 
         /* Process layout */
@@ -2168,7 +2168,7 @@ static void ProcessTileModes(pugi::xml_node Node, t_tile *tile, const pugiutil::
         index++;
 
         //Process the <mode> tag attributes
-        for(pugi::xml_attribute attr : Node.attributes()) {
+        for(pugi::xml_attribute attr : mode.attributes()) {
             if(attr.name() == std::string("name")) {
                 tile_mode->name = vtr::strdup(attr.value());
             } else if(attr.name() == std::string("capacity")) {