==12316==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x6110001255c2 at pc 0x7fb246fb0c5e bp 0x7fffd68d3c20 sp 0x7fffd68d3c18
READ of size 1 at 0x6110001255c2 thread T0
    #0 0x7fb246fb0c5d in draw_sprites /mnt/s/GitHub/mame/build/projects/sdl/mame/gmake-linux-clang/../../../../../src/mame/konami/ironhors.cpp:298:12
    #1 0x7fb246fb0c5d in (anonymous namespace)::ironhors_state::screen_update(screen_device&, bitmap_ind16&, rectangle const&) /mnt/s/GitHub/mame/build/projects/sdl/mame/gmake-linux-clang/../../../../../src/mame/konami/ironhors.cpp:375:2
    #2 0x7fb2635f656d in util::detail::delegate_base<delegate_late_bind, unsigned int, screen_device&, bitmap_ind16&, rectangle const&>::operator()(screen_device&, bitmap_ind16&, rectangle const&) const /mnt/s/GitHub/mame/build/projects/sdl/mame/gmake-linux-clang/../../../../../src/lib/util/delegate.h:765:11
    #3 0x7fb2635e6386 in screen_device::update_partial(int) /mnt/s/GitHub/mame/build/projects/sdl/mame/gmake-linux-clang/../../../../../src/emu/screen.cpp:1215:41
    #4 0x7fb2636e3bc9 in video_manager::finish_screen_updates() /mnt/s/GitHub/mame/build/projects/sdl/mame/gmake-linux-clang/../../../../../src/emu/video.cpp:622:10
    #5 0x7fb2636e29cb in video_manager::frame_update(bool) /mnt/s/GitHub/mame/build/projects/sdl/mame/gmake-linux-clang/../../../../../src/emu/video.cpp:215:44
    #6 0x7fb2635dc7c8 in screen_device::vblank_begin(int) /mnt/s/GitHub/mame/build/projects/sdl/mame/gmake-linux-clang/../../../../../src/emu/screen.cpp:1646:21
    #7 0x7fb2635c5304 in operator() /mnt/s/GitHub/mame/build/projects/sdl/mame/gmake-linux-clang/../../../../../src/lib/util/delegate.h:765:11
    #8 0x7fb2635c5304 in device_scheduler::execute_timers() /mnt/s/GitHub/mame/build/projects/sdl/mame/gmake-linux-clang/../../../../../src/emu/schedule.cpp:951:5
    #9 0x7fb2635c0858 in device_scheduler::timeslice() /mnt/s/GitHub/mame/build/projects/sdl/mame/gmake-linux-clang/../../../../../src/emu/schedule.cpp:505:2
    #10 0x7fb2634584a7 in running_machine::run(bool) /mnt/s/GitHub/mame/build/projects/sdl/mame/gmake-linux-clang/../../../../../src/emu/machine.cpp:329:17
    #11 0x7fb2665bef7f in mame_machine_manager::execute() /mnt/s/GitHub/mame/build/projects/sdl/mame/gmake-linux-clang/../../../../../src/frontend/mame/mame.cpp:290:19
    #12 0x7fb2667b38d6 in cli_frontend::start_execution(mame_machine_manager*, std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&) /mnt/s/GitHub/mame/build/projects/sdl/mame/gmake-linux-clang/../../../../../src/frontend/mame/clifront.cpp:275:22
    #13 0x7fb2667b741f in cli_frontend::execute(std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > >&) /mnt/s/GitHub/mame/build/projects/sdl/mame/gmake-linux-clang/../../../../../src/frontend/mame/clifront.cpp:291:3
    #14 0x7fb2665c3d5f in emulator_info::start_frontend(emu_options&, osd_interface&, std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > >&) /mnt/s/GitHub/mame/build/projects/sdl/mame/gmake-linux-clang/../../../../../src/frontend/mame/mame.cpp:454:18
    #15 0x7fb26379a58b in main /mnt/s/GitHub/mame/build/projects/sdl/mame/gmake-linux-clang/../../../../../src/osd/sdl/sdlmain.cpp:191:9
    #16 0x7fb221c99209 in __libc_start_call_main csu/../sysdeps/nptl/libc_start_call_main.h:58:16
    #17 0x7fb221c992bb in __libc_start_main csu/../csu/libc-start.c:389:3
    #18 0x7fb240f24260 in _start (/mnt/s/GitHub/mame/mame+0x1d397260) (BuildId: 603d3d1c300651feb2a8e3ac6e9cb58d3f85e77b)

0x6110001255c2 is located 2 bytes to the right of 256-byte region [0x6110001254c0,0x6110001255c0)
allocated by thread T0 here:
    #0 0x7fb240fa70ae in __interceptor_malloc (/mnt/s/GitHub/mame/mame+0x1d41a0ae) (BuildId: 603d3d1c300651feb2a8e3ac6e9cb58d3f85e77b)
    #1 0x7fb25cdee3f9 in memory_manager::allocate_memory(device_t&, int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, unsigned char, unsigned long) /mnt/s/GitHub/mame/build/projects/sdl/mame/gmake-linux-clang/../../../../../src/emu/emumem.cpp:312:46
    #2 0x7fb25cdef255 in memory_manager::share_alloc(device_t&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, unsigned char, unsigned long, util::endianness) /mnt/s/GitHub/mame/build/projects/sdl/mame/gmake-linux-clang/../../../../../src/emu/emumem.cpp:378:14
    #3 0x7fb25ce393be in address_space::prepare_map_generic(address_map&, bool) /mnt/s/GitHub/mame/build/projects/sdl/mame/gmake-linux-clang/../../../../../src/emu/emumem_aspace.cpp:809:23
    #4 0x7fb25ce3bd62 in address_space::prepare_map() /mnt/s/GitHub/mame/build/projects/sdl/mame/gmake-linux-clang/../../../../../src/emu/emumem_aspace.cpp:896:2
    #5 0x7fb25ce153b7 in device_memory_interface::prepare_maps() /mnt/s/GitHub/mame/build/projects/sdl/mame/gmake-linux-clang/../../../../../src/emu/dimemory.h:102:84
    #6 0x7fb25cdedb1a in memory_manager::initialize() /mnt/s/GitHub/mame/build/projects/sdl/mame/gmake-linux-clang/../../../../../src/emu/emumem.cpp:293:11
    #7 0x7fb263454bf5 in running_machine::start() /mnt/s/GitHub/mame/build/projects/sdl/mame/gmake-linux-clang/../../../../../src/emu/machine.cpp:183:11
    #8 0x7fb2634580dc in running_machine::run(bool) /mnt/s/GitHub/mame/build/projects/sdl/mame/gmake-linux-clang/../../../../../src/emu/machine.cpp:281:3
    #9 0x7fb2665bef7f in mame_machine_manager::execute() /mnt/s/GitHub/mame/build/projects/sdl/mame/gmake-linux-clang/../../../../../src/frontend/mame/mame.cpp:290:19
    #10 0x7fb2667b38d6 in cli_frontend::start_execution(mame_machine_manager*, std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&) /mnt/s/GitHub/mame/build/projects/sdl/mame/gmake-linux-clang/../../../../../src/frontend/mame/clifront.cpp:275:22
    #11 0x7fb2667b741f in cli_frontend::execute(std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > >&) /mnt/s/GitHub/mame/build/projects/sdl/mame/gmake-linux-clang/../../../../../src/frontend/mame/clifront.cpp:291:3
    #12 0x7fb2665c3d5f in emulator_info::start_frontend(emu_options&, osd_interface&, std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > >&) /mnt/s/GitHub/mame/build/projects/sdl/mame/gmake-linux-clang/../../../../../src/frontend/mame/mame.cpp:454:18
    #13 0x7fb26379a58b in main /mnt/s/GitHub/mame/build/projects/sdl/mame/gmake-linux-clang/../../../../../src/osd/sdl/sdlmain.cpp:191:9
    #14 0x7fb221c99209 in __libc_start_call_main csu/../sysdeps/nptl/libc_start_call_main.h:58:16

SUMMARY: AddressSanitizer: heap-buffer-overflow /mnt/s/GitHub/mame/build/projects/sdl/mame/gmake-linux-clang/../../../../../src/mame/konami/ironhors.cpp:298:12 in draw_sprites
Shadow bytes around the buggy address:
  0x0c228001ca60: fd fd fd fd fd fd fd fd fa fa fa fa fa fa fa fa
  0x0c228001ca70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c228001ca80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c228001ca90: fa fa fa fa fa fa fa fa 00 00 00 00 00 00 00 00
  0x0c228001caa0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x0c228001cab0: 00 00 00 00 00 00 00 00[fa]fa fa fa fa fa fa fa
  0x0c228001cac0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c228001cad0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c228001cae0: fa fa fa fa fa fa fa fa 00 00 00 00 00 00 00 00
  0x0c228001caf0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c228001cb00: 00 00 fa fa fa fa fa fa fa fa fa fa fa fa fa fa
Shadow byte legend (one shadow byte represents 8 application bytes):
  Addressable:           00
  Partially addressable: 01 02 03 04 05 06 07 
  Heap left redzone:       fa
  Freed heap region:       fd
  Stack left redzone:      f1
  Stack mid redzone:       f2
  Stack right redzone:     f3
  Stack after return:      f5
  Stack use after scope:   f8
  Global redzone:          f9
  Global init order:       f6
  Poisoned by user:        f7
  Container overflow:      fc
  Array cookie:            ac
  Intra object redzone:    bb
  ASan internal:           fe
  Left alloca redzone:     ca
  Right alloca redzone:    cb