compilation error about umoria-color HOT 6 CLOSED

/home/lea/src/umoria-color/src/dungeon.cpp: In function ‘int caveGetTileColor(const Coord_t&)’:
/home/lea/src/umoria-color/src/dungeon.cpp:253:17: error: this statement may fall through [-Werror=implicit-fallthrough=]
  253 |                 if ((game.treasure.list[tile.treasure_id].sub_category_id & (ITEM_SINGLE_STACK_MIN - 1)) < MAX_MUSHROOMS) {
      |                 ^~
/home/lea/src/umoria-color/src/dungeon.cpp:256:13: note: here
  256 |             default:
      |             ^~~~~~~
cc1plus: all warnings being treated as errors
make[2]: *** [CMakeFiles/umoria.dir/build.make:264: CMakeFiles/umoria.dir/src/dungeon.cpp.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:95: CMakeFiles/umoria.dir/all] Error 2
make: *** [Makefile:103: all] Error 2

[ 98%] Building CXX object CMakeFiles/umoria.dir/src/wizard.cpp.o
> /home/d/math/src/games/roguelike/moria_angband_tome/umoria/src/game_save.cpp: In function ‘bool loadGame(bool&)’:
> /home/d/math/src/games/roguelike/moria_angband_tome/umoria/src/game_save.cpp:810:29: error: array subscript 66 is above array bounds of ‘Tile_t [66][198]’ [-Werror=array-bounds]
>   810 |                 if (tile >= &dg.floor[MAX_HEIGHT][0]) {
>       |                             ^~~~~~~~~~~~~~~~~~~~~~~~
> In file included from /home/d/math/src/games/roguelike/moria_angband_tome/umoria/src/headers.h:59,
>                  from /home/d/math/src/games/roguelike/moria_angband_tome/umoria/src/game_save.cpp:8:
> /home/d/math/src/games/roguelike/moria_angband_tome/umoria/src/dungeon.h:55:12: note: while referencing ‘Dungeon_t::floor’
>    55 |     Tile_t floor[MAX_HEIGHT][MAX_WIDTH];
>       |            ^~~~~
> cc1plus: all warnings being treated as errors
> make[2]: *** [CMakeFiles/umoria.dir/build.make:370: CMakeFiles/umoria.dir/src/game_save.cpp.o] Error 1
> make[2]: *** Waiting for unfinished jobs....
> make[1]: *** [CMakeFiles/Makefile2:83: CMakeFiles/umoria.dir/all] Error 2

make: *** [Makefile:91: all] Error 2