"control reaches end of non-void function" warning from GCC

[iv-m]

boost 1.83.0 does not build with gcc 13.2 because compilation of libs/mpi/src/environment.cpp fails with the following diagnostics:

    "g++"  -fPIC -m64 -pthread -fvisibility=default -pipe -frecord-gcc-switches -Wall -g -O2 -flto=auto -ffat-lto-objects -fno-strict-aliasing  -DBOOST_ALL_NO_LIB=1 -DBOOST_MPI_DYN_LINK=1 -DBOOST_MPI_SOURCE=1 -DNDEBUG   -I"." -I"/usr/lib64/
openmpi/include"  -c -o "bin.v2/libs/mpi/build/gcc-13/release/local-visibility-global/optimization-off/pch-off/threading-multi/visibility-hidden/environment.o" "libs/mpi/src/environment.cpp"                                                  
                                                                                                                                                                                                                                                
libs/mpi/src/environment.cpp: In function 'int boost::mpi::detail::level2int(boost::mpi::threading::level)':                                                                                                                                    
libs/mpi/src/environment.cpp:35:23: error: control reaches end of non-void function [-Werror=return-type]                                                                                                                                       
   35 |     environment::abort(70); // EX_SOFTWARE                                                                                                                                                                                              
      |     ~~~~~~~~~~~~~~~~~~^~~~                                                                                                                                                                                                              
libs/mpi/src/environment.cpp: In function 'boost::mpi::threading::level boost::mpi::detail::int2level(int)':                                                                                                                                    
libs/mpi/src/environment.cpp:53:23: error: control reaches end of non-void function [-Werror=return-type]                                                                                                                                       
   53 |     environment::abort(70); // EX_SOFTWARE                                                                                                                                                                                              
      |     ~~~~~~~~~~~~~~~~~~^~~~                                                                                                                                                                                                              
cc1plus: some warnings being treated as errors                                                                                                                                                                                                  

[iv-m]

It seems that environment::abort should me marked as [[noreturn]], but I'm not sure that this would be a valid statement and how exactly this should be done in a portable way.