Program received signal SIGSEGV, Segmentation fault.
map_location::operator< (this=0x2e63697361622f93, a=...) at src/map_location.hpp:77
77              bool operator<(const map_location& a) const { return x < a.x || (x == a.x && y < a.y); }
(gdb) bt
#0  map_location::operator< (this=0x2e63697361622f93, a=...) at src/map_location.hpp:77
#1  0x000000000051b601 in std::less<map_location>::operator() (this=0x2e943f0, __x=..., __y=...)
    at /usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../include/c++/4.8/bits/stl_function.h:235
#2  0x0000000000644477 in std::_Rb_tree<map_location, map_location, std::_Identity<map_location>, std::less<map_location>, std::allocator<map_location> >::_M_lower_bound (this=0x2e943f0, __x=0x2e63697361622f73, __y=0x6059dd8, __k=...)
    at /usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../include/c++/4.8/bits/stl_tree.h:1157
#3  0x00000000006443b1 in std::_Rb_tree<map_location, map_location, std::_Identity<map_location>, std::less<map_location>, std::allocator<map_location> >::find (this=0x2e943f0, __k=...) at /usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../include/c++/4.8/bits/stl_tree.h:1805
#4  0x000000000079618f in std::set<map_location, std::less<map_location>, std::allocator<map_location> >::count (this=0x2e943f0, __x=...)
    at /usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../include/c++/4.8/bits/stl_set.h:645
#5  0x000000000080843b in team::fogged (this=0x2e94370, loc=...) at src/team.cpp:512
#6  0x0000000000512e05 in display::fogged (this=0x460e9c0, loc=...) at src/display.hpp:343
#7  0x00000000009b4ca0 in unit_creator::post_create (this=0x7fffffffa6a0, loc=..., new_unit=..., anim=false) at src/actions/create.cpp:238
#8  0x00000000009b44ab in unit_creator::add_unit (this=0x7fffffffa6a0, cfg=..., vcfg=0x7fffffffae98) at src/actions/create.cpp:204
#9  0x000000000106af3c in game_events::wml_func_unit (cfg=...) at src/game_events/action_wml.cpp:2505
#10 0x00000000007c3572 in cfun_wml_action (L=0x74145a0) at src/scripting/lua.cpp:4147
#11 0x00000000010fe717 in luaD_precall (L=0x74145a0, func=0x2e5e5b0, nresults=0) at src/lua/ldo.cpp:333
#12 0x00000000011113e5 in luaV_execute (L=0x74145a0) at src/lua/lvm.cpp:701
#13 0x00000000010feeda in luaD_call (L=0x74145a0, func=0x2d8b820, nResults=0, allowyield=0) at src/lua/ldo.cpp:409
#14 0x00000000010fb3e4 in f_call (L=0x74145a0, ud=0x7fffffffb630) at src/lua/lapi.cpp:914
#15 0x00000000010fde90 in luaD_rawrunprotected (L=0x74145a0, f=0x10fb3b0 <f_call(lua_State*, void*)>, ud=0x7fffffffb630) at src/lua/ldo.cpp:147
#16 0x00000000010ff689 in luaD_pcall (L=0x74145a0, func=0x10fb3b0 <f_call(lua_State*, void*)>, u=0x7fffffffb630, old_top=32, ef=16) at src/lua/ldo.cpp:607
#17 0x00000000010fb2a1 in lua_pcallk (L=0x74145a0, nargs=1, nresults=0, errfunc=-3, ctx=0, k=0x0) at src/lua/lapi.cpp:940
#18 0x00000000007d9d59 in luaW_pcall (L=0x74145a0, nArgs=1, nRets=0, allow_wml_error=true) at src/scripting/lua_api.cpp:318
Python Exception <class 'gdb.error'> No type named std::basic_string<char>::_Rep.:
#19 0x00000000007c3673 in LuaKernel::run_wml_action (this=0x50e7be0, cmd=, cfg=..., ev=...) at src/scripting/lua.cpp:4185
#20 0x0000000000c03fc7 in game_events::handle_event_commands (event_info=..., cfg=...) at src/game_events/pump.cpp:434
#21 0x0000000000bf8fb9 in game_events::event_handler::handle_event (this=0x4b85580, event_info=..., handler_p=...) at src/game_events/handlers.cpp:479
#22 0x0000000000c05b87 in game_events::(anonymous namespace)::process_event (handler_p=..., ev=...) at src/game_events/pump.cpp:267
#23 0x0000000000c053db in game_events::pump () at src/game_events/pump.cpp:539
Python Exception <class 'gdb.error'> No type named std::basic_string<char>::_Rep.:
#24 0x0000000000c043a2 in game_events::fire (event=, loc1=..., loc2=..., data=...) at src/game_events/pump.cpp:460
#25 0x0000000000eabe48 in play_controller::fire_prestart (this=0x2e7ee40) at src/play_controller.cpp:570
#26 0x000000000079aa09 in replay_controller::reset_replay (this=0x2e7ee40) at src/replay_controller.cpp:353
#27 0x000000000079869a in replay_controller::replay_controller (this=0x2e7ee40, level=..., state_of_game=..., ticks=7523, game_config=..., video=...)
    at src/replay_controller.cpp:131
#28 0x0000000000797b63 in play_replay_level (game_config=..., video=..., state_of_game=..., is_unit_test=false) at src/replay_controller.cpp:60
#29 0x0000000000750e50 in play_replay (disp=..., gamestate=..., game_config=..., video=..., is_unit_test=false) at src/playcampaign.cpp:208
---Type <return> to continue, or q <return> to quit---q