implicit fallthrough errors

error.log

[ 45%] Building CXX object libsolidity/CMakeFiles/solidity.dir/codegen/ContractCompiler.cpp.o                                                                                                                                                                                   
/home/lefteris/ew/solidity/libsolidity/codegen/CompilerUtils.cpp: In member function ‘void dev::solidity::CompilerUtils::convertType(const dev::solidity::Type&, const dev::solidity::Type&, bool, bool)’:                                                                      
/home/lefteris/ew/solidity/libsolidity/codegen/CompilerUtils.cpp:784:3: error: this statement may fall through [-Werror=implicit-fallthrough=]                                                                                                                                  
   }                                                                                                                                                                                                                                                                            
   ^                                                                                                                                                                                                                                                                            
/home/lefteris/ew/solidity/libsolidity/codegen/CompilerUtils.cpp:786:2: note: here                                                                                                                                                                                              
  default:                                                                                                                                                                                                                                                                      
  ^~~~~~~                                                                                                                                                                                                                                                                       
[ 46%] Building CXX object libsolidity/CMakeFiles/solidity.dir/codegen/ExpressionCompiler.cpp.o                                                                                                                                                                                 
cc1plus: all warnings being treated as errors                                                                                                                                                                                                                                   
make[2]: *** [libsolidity/CMakeFiles/solidity.dir/build.make:543: libsolidity/CMakeFiles/solidity.dir/codegen/CompilerUtils.cpp.o] Error 1                                                                                                                                      
make[2]: *** Waiting for unfinished jobs....
/home/lefteris/ew/solidity/libsolidity/codegen/ExpressionCompiler.cpp: In member function ‘virtual bool dev::solidity::ExpressionCompiler::visit(const dev::solidity::MemberAccess&)’:                                                                                          
/home/lefteris/ew/solidity/libsolidity/codegen/ExpressionCompiler.cpp:1045:9: error: this statement may fall through [-Werror=implicit-fallthrough=]                                                                                                                            
    break;                                                                                                                                                                                                                                                                      
         ^                                                                                                                                                                                                                                                                      
/home/lefteris/ew/solidity/libsolidity/codegen/ExpressionCompiler.cpp:1047:2: note: here                                                                                                                                                                                        
  case Type::Category::Integer:                                                                                                                                                                                                                                                 
  ^~~~                                                                                                                                                                                                                                                                          
cc1plus: all warnings being treated as errors                                                                                                                                                                                                                                   
make[2]: *** [libsolidity/CMakeFiles/solidity.dir/build.make:591: libsolidity/CMakeFiles/solidity.dir/codegen/ExpressionCompiler.cpp.o] Error 1                                                                                                                                 
make[1]: *** [CMakeFiles/Makefile2:275: libsolidity/CMakeFiles/solidity.dir/all] Error 2                                                                                                                                                                                        
make: *** [Makefile:130: all] Error 2