When I compile (svn 7576) I get the the following error:
src/mame/drivers/megadrive.c: In function 'void driver_init__32x(running_machine*)':
src/mame/drivers/megadrive.c:6519: internal compiler error: Segmentation fault
make: *** [obj/windows/mess/mame/drivers/megadrive.o] Error 1