/in/foo.cc: In function 'Dodecahedron::Bigint Dodecahedron::sub_number(Bigint&, Bigint&)':
/in/foo.cc:505:44: warning: 'last_i_iterator' may be used uninitialized [-Wmaybe-uninitialized]
  505 |               tmpx0 = tmpx3[last_i_iterator+1];
      |                             ~~~~~~~~~~~~~~~^~
/in/foo.cc:468:11: note: 'last_i_iterator' was declared here
  468 |       int last_i_iterator;
      |           ^~~~~~~~~~~~~~~