rev 9498 stops compiling after hitting this:
Compiling src/mess/drivers/pc88va.c...
cc1plus: warnings being treated as errors
src/mess/drivers/pc88va.c: In function �UINT32 calc_kanji_rom_addr(UINT8, UINT8, int, int)�:
src/mess/drivers/pc88va.c:146: warning: comparison is always true due to limited range of data type
make: *** [obj/sdl/MESS64/mess/drivers/pc88va.o] Error 1
make: *** Waiting for unfinished jobs....

Clean compile, 64-bit OS X 10.6.4, latest xcode.