BugID: #05485

==12857==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x000007ceb75e sp 0x7fff39bd80d0 bp 0x7fff39bd8110 T0)
#0 0x7ceb75d in emu_timer::machine() const /home/notroot/trunk/src/emu/schedule.h:71
#1 0x7ceb75d in emu_timer::adjust(attotime, int, attotime) /home/notroot/trunk/src/emu/schedule.c:180
#2 0x778207e in m68307_timer::write_tmr(unsigned short, unsigned short, int) /home/notroot/trunk/src/emu/machine/68307tmu.c:206
#3 0x7c7be3a in delegate_base<void, address_space&, unsigned int, unsigned short, unsigned short, _noparam>::operator()(address_space&, unsigned int, unsigned short, unsigned short) const /home/notroot/trunk/src/emu/delegate.h:514
#4 0x7c7be3a in handler_entry_write::write16(address_space&, unsigned int, unsigned short, unsigned short) const /home/notroot/trunk/src/emu/memory.c:481
#5 0x7c7be3a in address_space_specific<unsigned short, (endianness_t)1, true>::write_native(unsigned int, unsigned short) /home/notroot/trunk/src/emu/memory.c:1203
#6 0x66cc82b in delegate_base<void, unsigned int, unsigned short, _noparam, _noparam, _noparam>::operator()(unsigned int, unsigned short) const /home/notroot/trunk/src/emu/delegate.h:512
#7 0x66cc82b in m68ki_write_16_fc(m68000_base_device*, unsigned int, unsigned int, unsigned int) /home/notroot/trunk/src/emu/cpu/m68000/m68kcpu.h:816
#8 0x66cc82b in m68000_base_device_ops::m68k_op_move_16_al_i(m68000_base_device*) /home/notroot/trunk/obj/sdl64d/emu/cpu/m68000/m68kops.c:19118
#9 0x6529a1d in m68000_base_device::cpu_execute() /home/notroot/trunk/src/emu/cpu/m68000/m68kcpu.c:856
#10 0x7cf01b0 in device_execute_interface::run() /home/notroot/trunk/src/emu/diexec.h:187
#11 0x7cf01b0 in device_scheduler::timeslice() /home/notroot/trunk/src/emu/schedule.c:474
#12 0x7c0bd71 in running_machine::run(bool) /home/notroot/trunk/src/emu/machine.c:378
#13 0x7c03157 in mame_execute(emu_options&, osd_interface&) /home/notroot/trunk/src/emu/mame.c:194
#14 0x7a03efc in cli_frontend::execute(int, char**) /home/notroot/trunk/src/emu/clifront.c:237
#15 0x55a1645 in main /home/notroot/trunk/src/osd/sdl/sdlmain.c:380
#16 0x7fa0cf6f7de4 in __libc_start_main /build/buildd/eglibc-2.17/csu/libc-start.c:260
#17 0xfbfbdc in _start (/home/notroot/trunk/mame64d+0xfbfbdc)