Segfault on reloading acetylene torch

[actually-a-cat]

Describe the bug

crashy crashy

Attach save file

Landover-trimmed.tar.gz

Steps to reproduce

1. load save
2. press reload
3. choose acetylene torch
4. choose first welding tank on list
5. get prompted to dispose of wielded item, choose to drop (no other choice)
6. crash

Expected behavior

no crashy

Screenshots

No response

Versions and configuration

• OS: Windows
  • OS Version: 10.0.19045.3803 (22H2)
• Game Version: 0.G-5914-gff04cc2b1a [64-bit]
• Graphics Version: Tiles
• Game Language: English [en]
• Mods loaded: [
  Dark Days Ahead [dda],
  Disable NPC Needs [no_npc_food],
  Portal Storms Ignore NPCs [personal_portal_storms],
  Slowdown Fungal Growth [no_fungal_growth]
  ]

Additional context

The program has crashed.
See the log file for a stack trace.
CRASH LOG FILE: ./config/crash.log
VERSION: 0.G-5914-gff04cc2b1a
TYPE: Signal
MESSAGE: SIGSEGV: Segmentation fault
STACK TRACE:

  #0
    (dbghelp: @0x7ff6f7fe2fdf[cataclysm-tiles.exe+0x612fdf]), 
    (libbacktrace: debug_write_backtrace(std::ostream&)+0x6f@0x140612fdf),
    0x140612fdf    …/src/mxe/usr/lib/gcc/x86_64-w64-mingw32.static/11.4.0/include/c++/ext/aligned_buffer.h:1125    debug_write_backtrace(std::ostream&)
  #1
    (dbghelp: @0x7ff6f7f93742[cataclysm-tiles.exe+0x5c3742]), 
    (libbacktrace: log_crash+0x412@0x1405c3742),
    0x1405c3742    …/src/mxe/usr/lib/gcc/x86_64-w64-mingw32.static/11.4.0/include/c++/sstream:537    std::basic_streambuf<char, std::char_traits<char> >::pptr() const
    0x1405c3742    …/src/mxe/usr/lib/gcc/x86_64-w64-mingw32.static/11.4.0/include/c++/bits/basic_ios.h:432    std::__cxx11::basic_stringbuf<char, std::char_traits<char>, std::allocator<char> >::_M_high_mark() const
    0x1405c3742    …/src/mxe/usr/lib/gcc/x86_64-w64-mingw32.static/11.4.0/include/c++/bits/basic_ios.h:245    std::__cxx11::basic_stringbuf<char, std::char_traits<char>, std::allocator<char> >::str() const
    0x1405c3742    …/src/mxe/usr/lib/gcc/x86_64-w64-mingw32.static/11.4.0/include/c++/bits/basic_ios.h:918    std::__cxx11::basic_ostringstream<char, std::char_traits<char>, std::allocator<char> >::str() const
    0x1405c3742    …/src/mxe/usr/lib/gcc/x86_64-w64-mingw32.static/11.4.0/include/c++/bits/basic_string.tcc:86    log_crash
  #2
    (dbghelp: @0x7ff6f7f93f80[cataclysm-tiles.exe+0x5c3f80]), 
    (libbacktrace: signal_handler+0x40@0x1405c3f80),
    0x1405c3f80    …/src/mxe/usr/lib/gcc/x86_64-w64-mingw32.static/11.4.0/include/c++/bits/basic_string.tcc:143    signal_handler
  #3
    (dbghelp: @0x7ff6f984b812[cataclysm-tiles.exe+0x1e7b812]), 
    (libbacktrace: gnu_exception_handler+0x182@0x141e7b812),
    0x141e7b812    ../gcc-11.4.0.build_/mingw-w64-v11.0.1/mingw-w64-crt/crt/crt_handler.c:214    _gnu_exception_handler
  #4
    (dbghelp: _C_specific_handler+0x98@0x7ff978337ff8[msvcrt.dll+0x27ff8]), 
    (backtrace_syminfo failed: errno = -1, msg = no symbol table in PE/COFF executable),
    (backtrace_pcinfo failed: errno = -1, msg = no debug info in PE/COFF executable),
  #5
    (dbghelp: _chkstk+0x11f@0x7ff97a0723af[ntdll.dll+0xa23af]), 
    (backtrace_syminfo failed: errno = -1, msg = no symbol table in PE/COFF executable),
    (backtrace_pcinfo failed: errno = -1, msg = no debug info in PE/COFF executable),
  #6
    (dbghelp: RtlRaiseException+0x484@0x7ff97a0214b4[ntdll.dll+0x514b4]), 
    (backtrace_syminfo failed: errno = -1, msg = no symbol table in PE/COFF executable),
    (backtrace_pcinfo failed: errno = -1, msg = no debug info in PE/COFF executable),
  #7
    (dbghelp: KiUserExceptionDispatcher+0x2e@0x7ff97a070ebe[ntdll.dll+0xa0ebe]), 
    (backtrace_syminfo failed: errno = -1, msg = no symbol table in PE/COFF executable),
    (backtrace_pcinfo failed: errno = -1, msg = no debug info in PE/COFF executable),
  #8
    (dbghelp: @0x7ff6f855d1a0[cataclysm-tiles.exe+0xb8d1a0]), 
    (libbacktrace: item_contents::get_pockets(std::function<bool (item_pocket const&)> const&)+0x10@0x140b8d1a0),
    0x140b8d1a0    src/input.h:947    std::__cxx11::list<item_pocket, std::allocator<item_pocket> >::begin()
    0x140b8d1a0    …/src/mxe/usr/lib/gcc/x86_64-w64-mingw32.static/11.4.0/include/c++/bits/invoke.h:1971    item_contents::get_pockets(std::function<bool (item_pocket const&)> const&)
  #9
    (dbghelp: @0x7ff6f855d34e[cataclysm-tiles.exe+0xb8d34e]), 
    (libbacktrace: item_contents::get_all_standard_pockets()+0x4e@0x140b8d34e),
    0x140b8d34e    src/character.h:243    std::_Function_base::~_Function_base()
    0x140b8d34e    src/character.h:334    std::function<bool (item_pocket const&)>::~function()
    0x140b8d34e    …/src/mxe/usr/lib/gcc/x86_64-w64-mingw32.static/11.4.0/include/c++/bits/invoke.h:2004    item_contents::get_all_standard_pockets()
  #10
    (dbghelp: @0x7ff6f849fda2[cataclysm-tiles.exe+0xacfda2]), 
    (libbacktrace: item::get_all_standard_pockets()+0x12@0x140acfda2),
    0x140acfda2    …/src/mxe/usr/lib/gcc/x86_64-w64-mingw32.static/11.4.0/include/c++/optional:9741    item::get_all_standard_pockets()
  #11
    (dbghelp: @0x7ff6f9fbbe8a[cataclysm-tiles.exe+0x25ebe8a]), 
    (libbacktrace: item_location::impl::item_in_container::parent_pocket() const+0x6a@0x1425ebe8a),
    0x1425ebe8a    src/item_location.cpp:704    std::__shared_count<(__gnu_cxx::_Lock_policy)2>::~__shared_count()
    0x1425ebe8a    src/item_location.cpp:1154    std::__shared_ptr<item_location::impl, (__gnu_cxx::_Lock_policy)2>::~__shared_ptr()
    0x1425ebe8a    src/item_location.h:122    std::shared_ptr<item_location::impl>::~shared_ptr()
    0x1425ebe8a    src/talker.h:30    item_location::~item_location()
    0x1425ebe8a    src/talker.h:30    item_location::impl::item_in_container::parent_pocket() const
  #12
    (dbghelp: @0x7ff6f9fbc041[cataclysm-tiles.exe+0x25ec041]), 
    (libbacktrace: item_location::impl::item_in_container::check_parent_capacity_recursive() const+0x21@0x1425ec041),
    0x1425ec041    src/item_location.cpp:739    item_location::impl::item_in_container::volume_capacity() const
    0x1425ec041    src/item_location.cpp:747    item_location::impl::item_in_container::check_parent_capacity_recursive() const
  #13
    (dbghelp: @0x7ff6f7a4ad13[cataclysm-tiles.exe+0x7ad13]), 
    (libbacktrace: reload_activity_actor::finish(player_activity&, Character&)+0x3a3@0x14007ad13),
    0x14007ad13    src/point.h:4553    reload_activity_actor::finish(player_activity&, Character&)
  #14
    (dbghelp: @0x7ff6f8fe30b7[cataclysm-tiles.exe+0x16130b7]), 
    (libbacktrace: player_activity::do_turn(Character&)+0xcd7@0x1416130b7),
    0x1416130b7    src/talker.h:381    player_activity::do_turn(Character&)
  #15
    (dbghelp: @0x7ff6f80c6bc3[cataclysm-tiles.exe+0x6f6bc3]), 
    (libbacktrace: do_turn()+0x373@0x1406f6bc3),
    0x1406f6bc3    …/src/mxe/usr/lib/gcc/x86_64-w64-mingw32.static/11.4.0/include/c++/bits/invoke.h:486    do_turn()
  #16
    (dbghelp: @0x7ff6fa66562d[cataclysm-tiles.exe+0x2c9562d]), 
    (libbacktrace: main+0x26fd@0x142c9562d),
    0x142c9562d    …/src/mxe/usr/lib/gcc/x86_64-w64-mingw32.static/11.4.0/include/c++/bits/invoke.h:798    main
  #17
    (dbghelp: @0x7ff6f79d12f1[cataclysm-tiles.exe+0x12f1]), 
    (libbacktrace: _tmainCRTStartup+0x171@0x1400012f1),
    0x1400012f1    ../gcc-11.4.0.build_/mingw-w64-v11.0.1/mingw-w64-crt/crt/crtexe.c:273    __tmainCRTStartup
  #18
    (dbghelp: @0x7ff6f79d13e6[cataclysm-tiles.exe+0x13e6]), 
    (libbacktrace: WinMainCRTStartup+0x16@0x1400013e6),
    0x1400013e6    ../gcc-11.4.0.build_/mingw-w64-v11.0.1/mingw-w64-crt/crt/crtexe.c:164    WinMainCRTStartup
  #19
    (dbghelp: BaseThreadInitThunk+0x14@0x7ff978867344[KERNEL32.DLL+0x17344]), 
    (backtrace_syminfo failed: errno = -1, msg = no symbol table in PE/COFF executable),
    (backtrace_pcinfo failed: errno = -1, msg = no debug info in PE/COFF executable),
  #20
    (dbghelp: RtlUserThreadStart+0x21@0x7ff97a0226b1[ntdll.dll+0x526b1]), 
    (backtrace_syminfo failed: errno = -1, msg = no symbol table in PE/COFF executable),
    (backtrace_pcinfo failed: errno = -1, msg = no debug info in PE/COFF executable),

This is on a custom build with some patches but I tested that it reproduces on a stock build.

[hexagonrecursion]

/confirm

Following the above instructions caused a crash for me too.

VERSION: eaa25f5
TYPE: Signal
MESSAGE: SIGSEGV: Segmentation fault
STACK TRACE:

    ./cataclysm-tiles(debug_write_backtrace(std::ostream&)+0x40) [0x5651df059cd1]
    ./cataclysm-tiles(+0xbfd32e) [0x5651df03032e]
    ./cataclysm-tiles(+0xbfd64e) [0x5651df03064e]
    /lib64/libc.so.6(+0x3dba0) [0x7f688bb50ba0]
    ./cataclysm-tiles(item_pocket::is_type(pocket_type) const+0x4) [0x5651df38be72]
    ./cataclysm-tiles(item_contents::can_contain_liquid(bool) const+0x28) [0x5651df32b282]
    ./cataclysm-tiles(reload_activity_actor::finish(player_activity&, Character&)+0x4ca) [0x5651ded4ebbc]
    ./cataclysm-tiles(player_activity::do_turn(Character&)+0xa70) [0x5651df8b6c90]
    ./cataclysm-tiles(do_turn()+0x48c) [0x5651df0c58d7]
    ./cataclysm-tiles(main+0x1f7d) [0x5651debaf179]
    /lib64/libc.so.6(+0x27b4a) [0x7f688bb3ab4a]
    /lib64/libc.so.6(__libc_start_main+0x8b) [0x7f688bb3ac0b]
    ./cataclysm-tiles(_start+0x2e) [0x5651ded04b9e]

    Attempting to repeat stack trace using debug symbols…
    debug_write_backtrace(std::ostream&)
    …/src/debug.cpp:1227
    std::__cxx11::basic_ostringstream<char, std::char_traits<char>, std::allocator<char> >::str() const
    /usr/include/c++/9/sstream:678
    log_crash
    …/src/crash.cpp:86
    signal_handler
    …/src/crash.cpp:143
    ??
    ??:0
    item_pocket::is_type(pocket_type) const
    …/src/item_pocket.cpp:2258
    item_contents::can_contain_liquid(bool) const
    …/src/item_contents.cpp:1113 (discriminator 2)
    reload_activity_actor::finish(player_activity&, Character&)
    …/src/activity_actor.cpp:4542
    player_activity::do_turn(Character&)
    …/src/player_activity.cpp:383
    do_turn()
    …/src/do_turn.cpp:487
    main
    …/src/main.cpp:798
    ??
    ??:0
    ??
    ??:0
    _start
    ??:?

• OS: Linux
  • OS Version: LSB Version: n/a; Distributor ID: Fedora; Description: Fedora Linux 38 (Container Image); Release: 38; Codename: n/a;
• Game Version: eaa25f5 [64-bit]
• Graphics Version: Tiles
• Game Language: System language []
• Mods loaded: [
  Dark Days Ahead [dda],
  Disable NPC Needs [no_npc_food],
  Portal Storms Ignore NPCs [personal_portal_storms],
  Slowdown Fungal Growth [no_fungal_growth]
  ]

[hexagonrecursion]

This appears to be a use-after-free.

=================================================================
==82900==ERROR: AddressSanitizer: heap-use-after-free on address 0x6170071f1b10 at pc 0x000001dd19c9 bp 0x7ffe284b1d70 sp 0x7ffe284b1d68
READ of size 8 at 0x6170071f1b10 thread T0
    #0 0x1dd19c8 in reload_activity_actor::finish(player_activity&, Character&) src/activity_actor.cpp:4531
    #1 0x6e33246 in player_activity::do_turn(Character&) src/player_activity.cpp:383
    #2 0x3792e18 in do_turn() src/do_turn.cpp:487
    #3 0x50f2246 in main src/main.cpp:798
    #4 0x7f676bbc0b89 in __libc_start_call_main (/lib64/libc.so.6+0x27b89) (BuildId: f888be5f5e7d58e04cabb8c675c7ab94e77dd68c)
    #5 0x7f676bbc0c4a in __libc_start_main_alias_2 (/lib64/libc.so.6+0x27c4a) (BuildId: f888be5f5e7d58e04cabb8c675c7ab94e77dd68c)
    #6 0x1bec874 in _start (/home/cdda/git/Cataclysm-DDA/cataclysm-tiles+0x1bec874) (BuildId: e4aef1b01396edfcad6032b16ed98a6cef71b03b)

0x6170071f1b10 is located 16 bytes inside of 736-byte region [0x6170071f1b00,0x6170071f1de0)
freed by thread T0 here:
    #0 0x7f676ca34d28 in operator delete(void*, unsigned long) (/lib64/libasan.so.8+0xdad28) (BuildId: 542ad02088f38edfdba9d4bfa465b2299f512d3e)
    #1 0x1e58608 in std::__new_allocator<std::_List_node<item> >::deallocate(std::_List_node<item>*, unsigned long) /usr/include/c++/13/bits/new_allocator.h:168
    #2 0x1e5876c in std::allocator_traits<std::allocator<std::_List_node<item> > >::deallocate(std::allocator<std::_List_node<item> >&, std::_List_node<item>*, unsigned long) /usr/include/c++/13/bits/alloc_traits.h:516
    #3 0x1e5876c in std::__cxx11::_List_base<item, std::allocator<item> >::_M_put_node(std::_List_node<item>*) /usr/include/c++/13/bits/stl_list.h:522
    #4 0x1e5876c in std::__cxx11::_List_base<item, std::allocator<item> >::_M_clear() /usr/include/c++/13/bits/list.tcc:81
    #5 0x46a11ed in std::__cxx11::_List_base<item, std::allocator<item> >::~_List_base() /usr/include/c++/13/bits/stl_list.h:575
    #6 0x46a11ed in std::__cxx11::list<item, std::allocator<item> >::~list() /usr/include/c++/13/bits/stl_list.h:903
    #7 0x46a11ed in item_pocket::~item_pocket() src/item_pocket.h:36
    #8 0x46a12f3 in void std::__new_allocator<std::_List_node<item_pocket> >::destroy<item_pocket>(item_pocket*) /usr/include/c++/13/bits/new_allocator.h:194
    #9 0x46a12f3 in void std::allocator_traits<std::allocator<std::_List_node<item_pocket> > >::destroy<item_pocket>(std::allocator<std::_List_node<item_pocket> >&, item_pocket*) /usr/include/c++/13/bits/alloc_traits.h:557
    #10 0x46a12f3 in std::__cxx11::_List_base<item_pocket, std::allocator<item_pocket> >::_M_clear() /usr/include/c++/13/bits/list.tcc:77
    #11 0x46a1395 in std::__cxx11::list<item_pocket, std::allocator<item_pocket> >::clear() /usr/include/c++/13/bits/stl_list.h:1594
    #12 0x46a1395 in std::__cxx11::list<item_pocket, std::allocator<item_pocket> >::_M_move_assign(std::__cxx11::list<item_pocket, std::allocator<item_pocket> >&&, std::integral_constant<bool, true>) /usr/include/c++/13/bits/stl_list.h:2043
    #13 0x46a14ad in std::__cxx11::list<item_pocket, std::allocator<item_pocket> >::operator=(std::__cxx11::list<item_pocket, std::allocator<item_pocket> >&&) /usr/include/c++/13/bits/stl_list.h:935
    #14 0x46a14ad in item_contents::operator=(item_contents&&) src/item_contents.h:30
    #15 0x450ee34 in item::operator=(item&&) src/item.cpp:593
    #16 0x29e6f39 in Character::remove_weapon() src/character.cpp:3063
    #17 0x817f31a in Character::remove_items_with[abi:cxx11](std::function<bool (item const&)> const&, int) src/visitable.cpp:672
    #18 0x816d567 in visitable::remove_item(item&) src/visitable.cpp:547
    #19 0x4a59d65 in item_location::impl::item_on_person::remove_item() src/item_location.cpp:430
    #20 0x4a3706d in item_location::remove_item() src/item_location.cpp:1046
    #21 0x2c61519 in operator() src/character_inventory.cpp:721
    #22 0x2c617f9 in __invoke_impl<bool, Character::dispose_item(item_location&&, const std::string&)::<lambda()>&> /usr/include/c++/13/bits/invoke.h:61
    #23 0x2c617f9 in __invoke_r<bool, Character::dispose_item(item_location&&, const std::string&)::<lambda()>&> /usr/include/c++/13/bits/invoke.h:114
    #24 0x2c617f9 in _M_invoke /usr/include/c++/13/bits/std_function.h:290
    #25 0x2c74815 in std::function<bool ()>::operator()() const /usr/include/c++/13/bits/std_function.h:591
    #26 0x2c5f582 in Character::dispose_item(item_location&&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) src/character_inventory.cpp:762
    #27 0x28ffa0f in Character::unwield() src/character.cpp:7861
    #28 0x2361eff in avatar::wield(item&, int) src/avatar.cpp:1400
    #29 0x2363534 in avatar::wield(item&) src/avatar.cpp:1377
    #30 0x2c6d77a in Character::i_add(item, bool, item const*, item const*, bool, bool, bool) src/character_inventory.cpp:298
    #31 0x45f5a93 in item::reload(Character&, item_location, int) src/item.cpp:11679
    #32 0x1dd175d in reload_activity_actor::finish(player_activity&, Character&) src/activity_actor.cpp:4522
    #33 0x6e33246 in player_activity::do_turn(Character&) src/player_activity.cpp:383
    #34 0x3792e18 in do_turn() src/do_turn.cpp:487
    #35 0x50f2246 in main src/main.cpp:798
    #36 0x7f676bbc0b89 in __libc_start_call_main (/lib64/libc.so.6+0x27b89) (BuildId: f888be5f5e7d58e04cabb8c675c7ab94e77dd68c)
    #37 0x7f676bbc0c4a in __libc_start_main_alias_2 (/lib64/libc.so.6+0x27c4a) (BuildId: f888be5f5e7d58e04cabb8c675c7ab94e77dd68c)
    #38 0x1bec874 in _start (/home/cdda/git/Cataclysm-DDA/cataclysm-tiles+0x1bec874) (BuildId: e4aef1b01396edfcad6032b16ed98a6cef71b03b)

previously allocated by thread T0 here:
    #0 0x7f676ca33e28 in operator new(unsigned long) (/lib64/libasan.so.8+0xd9e28) (BuildId: 542ad02088f38edfdba9d4bfa465b2299f512d3e)
    #1 0x1e91f91 in std::__new_allocator<std::_List_node<item> >::allocate(unsigned long, void const*) /usr/include/c++/13/bits/new_allocator.h:147
    #2 0x1e92068 in std::allocator_traits<std::allocator<std::_List_node<item> > >::allocate(std::allocator<std::_List_node<item> >&, unsigned long) /usr/include/c++/13/bits/alloc_traits.h:482
    #3 0x1e92068 in std::__cxx11::_List_base<item, std::allocator<item> >::_M_get_node() /usr/include/c++/13/bits/stl_list.h:518
    #4 0x1e92068 in std::_List_node<item>* std::__cxx11::list<item, std::allocator<item> >::_M_create_node<item const&>(item const&) /usr/include/c++/13/bits/stl_list.h:710
    #5 0x1e92241 in void std::__cxx11::list<item, std::allocator<item> >::_M_insert<item const&>(std::_List_iterator<item>, item const&) /usr/include/c++/13/bits/stl_list.h:2005
    #6 0x1e927ac in std::__cxx11::list<item, std::allocator<item> >::push_back(item const&) /usr/include/c++/13/bits/stl_list.h:1306
    #7 0x4a8e84e in item_pocket::insert_item(item const&, bool, bool, bool) src/item_pocket.cpp:2211
    #8 0x47c278c in item_contents::combine(item_contents const&, bool, bool, bool, bool) src/item_contents.cpp:713
    #9 0x7469da4 in item::deserialize(JsonObject const&) src/savegame_json.cpp:3241
    #10 0x1ecefd6 in decltype ((({parm#1}.deserialize)(*this)),(true)) JsonValue::read<item>(item&, bool) const src/flexbuffer_json-inl.h:319
    #11 0x1ecf2c5 in bool JsonObject::read<item>(std::basic_string_view<char, std::char_traits<char> >, item&, bool) const src/flexbuffer_json-inl.h:1065
    #12 0x747a128 in Character::load(JsonObject const&) src/savegame_json.cpp:997
    #13 0x74882c8 in avatar::load(JsonObject const&) src/savegame_json.cpp:1613
    #14 0x748ca88 in avatar::deserialize(JsonObject const&) src/savegame_json.cpp:1608
    #15 0x7403b48 in decltype ((({parm#1}.deserialize)(*this)),(true)) JsonValue::read<avatar>(avatar&, bool) const src/flexbuffer_json-inl.h:319
    #16 0x7403e39 in bool JsonObject::read<avatar>(std::basic_string_view<char, std::char_traits<char> >, avatar&, bool) const src/flexbuffer_json-inl.h:1065
    #17 0x73a9a1d in game::unserialize(std::istream&, cata_path const&) src/savegame.cpp:269
    #18 0x3c924d8 in operator() src/game.cpp:3071
    #19 0x3c92538 in __invoke_impl<void, game::load(const save_t&)::<lambda()>::<lambda(std::istream&)>&, std::basic_istream<char, std::char_traits<char> >&> /usr/include/c++/13/bits/invoke.h:61
    #20 0x3c92538 in __invoke_r<void, game::load(const save_t&)::<lambda()>::<lambda(std::istream&)>&, std::basic_istream<char, std::char_traits<char> >&> /usr/include/c++/13/bits/invoke.h:111
    #21 0x3c92538 in _M_invoke /usr/include/c++/13/bits/std_function.h:290
    #22 0x2868d7d in std::function<void (std::istream&)>::operator()(std::istream&) const /usr/include/c++/13/bits/std_function.h:591
    #23 0x2864b74 in read_from_file(std::filesystem::__cxx11::path const&, std::function<void (std::istream&)> const&) src/cata_utility.cpp:451
    #24 0x2864fde in read_from_file(cata_path const&, std::function<void (std::istream&)> const&) src/cata_utility.cpp:441
    #25 0x3e468be in operator() src/game.cpp:3068
    #26 0x3e46b3a in __invoke_impl<void, game::load(const save_t&)::<lambda()>&> /usr/include/c++/13/bits/invoke.h:61
    #27 0x3e46b3a in __invoke_r<void, game::load(const save_t&)::<lambda()>&> /usr/include/c++/13/bits/invoke.h:111
    #28 0x3e46b3a in _M_invoke /usr/include/c++/13/bits/std_function.h:290
    #29 0x1c06737 in std::function<void ()>::operator()() const /usr/include/c++/13/bits/std_function.h:591
    #30 0x3d3af8b in game::load(save_t const&) src/game.cpp:3198
    #31 0x5107921 in main_menu::load_game(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, save_t const&) src/main_menu.cpp:1030
    #32 0x5114322 in main_menu::load_character_tab(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) src/main_menu.cpp:1100
    #33 0x5127b26 in main_menu::opening_screen() src/main_menu.cpp:854
    #34 0x50f1f22 in main src/main.cpp:792
    #35 0x7f676bbc0b89 in __libc_start_call_main (/lib64/libc.so.6+0x27b89) (BuildId: f888be5f5e7d58e04cabb8c675c7ab94e77dd68c)

SUMMARY: AddressSanitizer: heap-use-after-free src/activity_actor.cpp:4531 in reload_activity_actor::finish(player_activity&, Character&)
Shadow bytes around the buggy address:
  0x6170071f1880: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x6170071f1900: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x6170071f1980: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x6170071f1a00: fd fd fd fd fd fd fd fd fd fd fd fd fa fa fa fa
  0x6170071f1a80: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
=>0x6170071f1b00: fd fd[fd]fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x6170071f1b80: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x6170071f1c00: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x6170071f1c80: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x6170071f1d00: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x6170071f1d80: fd fd fd fd fd fd fd fd fd fd fd fd 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
==82900==ABORTING

[hexagonrecursion]

I think item_location target_loc looses the item it was referring to and becomes a dangling pointer.

Cataclysm-DDA/src/activity_actor_definitions.h

Line 1144 in f255964

item_location target_loc;

[hexagonrecursion]

I think the bug is in item::reload - it checks that we are not wielding the item we are reloading, but does not check whether we are wielding a container that contains the item.

Cataclysm-DDA/src/item.cpp

Lines 11662 to 11669 in f255964

	if( magazine_current() ) {
	// we don't want to replace wielded `ammo` with ejected magazine
	// as it will invalidate `ammo`. Also keep wielding the item being reloaded.
	allow_wield = ( !u.is_wielding( *ammo ) && !u.is_wielding( *this ) );
	// Defer placing the magazine into inventory until new magazine is installed.
	magazine_removed = *magazine_current();
	remove_item( *magazine_current() );
	}

Even in this case we are not supposed to crash - I will have to look into why safe_reference does not prevent a crash here

[hexagonrecursion]

Now I understand why safe_reference does not prevent a crash:

1. We cache a reference to the torch

Cataclysm-DDA/src/activity_actor.cpp

Line 4513 in ee14785

item &reloadable = *target_loc;

2. That cached reference becomes dangling when we call reloadable.reload because it calls Character::i_add and it unwields the container

Cataclysm-DDA/src/activity_actor.cpp

Line 4521 in ee14785

if( !reloadable.reload( who, std::move( ammo_loc ), quantity ) ) {

3. line 4527 or line 4530 accesses the now-dangling reference

Cataclysm-DDA/src/activity_actor.cpp

Lines 4526 to 4530 in ee14785

	if( ammo_is_filthy ) {
	reloadable.set_flag( flag_FILTHY );
	}
	if( reloadable.get_var( "dirt", 0 ) > 7800 ) {

I'll make a patch for this by fixing item::reload as described in the previous comment