Segfault while attempting to reload a Minigun

[kevingranade]

Spawned new character, wished for a minigun, wished for a bunch of .308 ammo, wished for a .308 ammo belt.
Wielded Minigun
Hit reload, selected minigun belt
Segfault (backtrace):
#0 0x0000000000426819 in item::item (this=0x23da7a0) at src/item.h:121
#1 0x000000000042688b in __gnu_cxx::new_allocator<std::__cxx1998::_List_node >::construct<item, item const&> (__p=, this=) at /usr/include/c++/6.2.1/ext/new_allocator.h:120
#2 std::allocator_traits<std::allocator<std::__cxx1998::_List_node > >::construct<item, item const&> (__p=, __a=...) at /usr/include/c++/6.2.1/bits/alloc_traits.h:455
#3 std::__cxx1998::__cxx11::list<item, std::allocator >::_M_create_node<item const&> (this=0x5f06f40) at /usr/include/c++/6.2.1/bits/stl_list.h:571
#4 std::__cxx1998::__cxx11::list<item, std::allocator >::_M_insert<item const&> (__position=..., this=0x5f06f40) at /usr/include/c++/6.2.1/bits/stl_list.h:1770
#5 std::__cxx1998::__cxx11::list<item, std::allocator >::emplace_back<item const&> (this=0x5f06f40) at /usr/include/c++/6.2.1/bits/stl_list.h:1108
#6 std::__cxx1998::__cxx11::list<item, std::allocator >::_M_initialize_dispatch<std::__cxx1998::_List_const_iterator > (__last=..., __first=..., this=0x5f06f40) at /usr/include/c++/6.2.1/bits/stl_list.h:1699
#7 std::__cxx1998::__cxx11::list<item, std::allocator >::list (__x=..., this=0x5f06f40) at /usr/include/c++/6.2.1/bits/stl_list.h:651
#8 std::__debug::list<item, std::allocator >::list (this=0x5f06f28) at /usr/include/c++/6.2.1/debug/list:89
#9 item::item (this=0x5f06f00) at src/item.h:121
#10 0x000000000042688b in __gnu_cxx::new_allocator<std::__cxx1998::_List_node >::construct<item, item const&> (__p=, this=) at /usr/include/c++/6.2.1/ext/new_allocator.h:120
#11 std::allocator_traits<std::allocator<std::__cxx1998::_List_node > >::construct<item, item const&> (__p=, __a=...) at /usr/include/c++/6.2.1/bits/alloc_traits.h:455
#12 std::__cxx1998::__cxx11::list<item, std::allocator >::_M_create_node<item const&> (this=0x5f06590) at /usr/include/c++/6.2.1/bits/stl_list.h:571
#13 std::__cxx1998::__cxx11::list<item, std::allocator >::_M_insert<item const&> (__position=..., this=0x5f06590) at /usr/include/c++/6.2.1/bits/stl_list.h:1770
#14 std::__cxx1998::__cxx11::list<item, std::allocator >::emplace_back<item const&> (this=0x5f06590) at /usr/include/c++/6.2.1/bits/stl_list.h:1108
#15 std::__cxx1998::__cxx11::list<item, std::allocator >::_M_initialize_dispatch<std::__cxx1998::_List_const_iterator > (__last=..., __first=..., this=0x5f06590) at /usr/include/c++/6.2.1/bits/stl_list.h:1699
#16 std::__cxx1998::__cxx11::list<item, std::allocator >::list (__x=..., this=0x5f06590) at /usr/include/c++/6.2.1/bits/stl_list.h:651
#17 std::__debug::list<item, std::allocator >::list (this=0x5f06578) at /usr/include/c++/6.2.1/debug/list:89
#18 item::item (this=0x5f06550) at src/item.h:121
#19 0x00000000008baf63 in __gnu_cxx::new_allocator<std::__cxx1998::_List_node >::construct<item, item&> (__p=, this=) at /usr/include/c++/6.2.1/ext/new_allocator.h:120
#20 std::allocator_traits<std::allocator<std::__cxx1998::_List_node > >::construct<item, item&> (__p=, __a=...) at /usr/include/c++/6.2.1/bits/alloc_traits.h:455
#21 std::__cxx1998::__cxx11::list<item, std::allocator >::_M_create_node<item&> (this=0x21b4718) at /usr/include/c++/6.2.1/bits/stl_list.h:571
#22 std::__cxx1998::__cxx11::list<item, std::allocator >::_M_insert<item&> (__position=..., this=0x21b4718) at /usr/include/c++/6.2.1/bits/stl_list.h:1770
#23 std::__cxx1998::__cxx11::list<item, std::allocator >::emplace_back<item&> (this=0x21b4718) at /usr/include/c++/6.2.1/bits/stl_list.h:1108
#24 item::reload (this=this@entry=0x21b46d8, u=..., loc=..., qty=, qty@entry=1) at src/item.cpp:4754
#25 0x0000000000f954ac in activity_handlers::reload_finish (act=0x21b4de0, p=0x21b4160) at src/activity_handlers.cpp:1236
#26 0x0000000000f95a07 in std::_Function_handler<void (player_activity*, player*), void ()(player_activity, player*)>::_M_invoke(std::_Any_data const&, player_activity*&&, player*&&) (__functor=..., __args#0=, __args#1=) at /usr/include/c++/6.2.1/functional:1740
#27 0x000000000053fca5 in std::function<void (player_activity*, player*)>::operator()(player_activity*, player*) const (this=, __args#0=, __args#0@entry=0x21b4de0, __args#1=, __args#1@entry=0x21b4160) at /usr/include/c++/6.2.1/functional:2136
#28 0x000000000053be70 in activity_type::call_finish (this=, act=act@entry=0x21b4de0, p=p@entry=0x21b4160) at src/player_activity.cpp:102
#29 0x000000000053ef75 in player_activity::do_turn (this=this@entry=0x21b4de0, p=p@entry=0x21b4160) at src/player_activity.cpp:201
#30 0x000000000048b7b1 in game::process_activity (this=this@entry=0x215a000) at src/game.cpp:1660
#31 0x00000000004cb8dd in game::do_turn (this=0x215a000) at src/game.cpp:1452
#32 0x00000000009055b0 in main (argc=, argv=) at src/main.cpp:491

This is kind of weird, segfault on invoking a default constructor?

[codemime]

Out of memory (unlikely, but who knows)? I couldn't reproduce the crash.

[Night-Pryanik]

Couldn't either.

[kevingranade]

Not specifically related to the minigun or anything, just dropped the ammo while reloading was in progress, which is a known issue.