v@v-xubuntu:~$ lldb supertux2
(lldb) target create "supertux2"
Current executable set to 'supertux2' (x86_64).
(lldb) run
Process 29222 launched: '/usr/games/supertux2' (x86_64)
error: ld-2.28.so 0xffffffff0005f117: adding range [0x14167-0x141ca) which has a base that is less than the function's low PC 0x148c0. Please file a bug and attach the file at the start of this error message
error: ld-2.28.so 0xffffffff0005f117: adding range [0x141e0-0x141e6) which has a base that is less than the function's low PC 0x148c0. Please file a bug and attach the file at the start of this error message
error: ld-2.28.so 0xffffffff0005f184: adding range [0x14167-0x141ca) which has a base that is less than the function's low PC 0x148c0. Please file a bug and attach the file at the start of this error message
error: ld-2.28.so 0xffffffff0005f184: adding range [0x141e0-0x141e6) which has a base that is less than the function's low PC 0x148c0. Please file a bug and attach the file at the start of this error message
[WARNING] /build/supertux-gAVxno/supertux-0.5.2/src/worldmap/worldmap_parser.cpp:123 Unknown token 'camera' in worldmap
Process 29222 stopped
* thread #1, name = 'supertux2', stop reason = signal SIGSEGV: invalid address (fault address: 0x18)
    frame #0: 0x00005555557228b8 supertux2`SquirrelVirtualMachine::wait_for_seconds(SQVM*, float) + 8
supertux2`SquirrelVirtualMachine::wait_for_seconds:
->  0x5555557228b8 <+8>:  movq   0x18(%rdi), %rdi
    0x5555557228bc <+12>: jmp    0x55555580bcd0            ; SquirrelScheduler::schedule_thread(SQVM*, float)
    0x5555557228c1:       nop
    0x5555557228c2:       nopw   %cs:(%rax,%rax)
(lldb) bt
* thread #1, name = 'supertux2', stop reason = signal SIGSEGV: invalid address (fault address: 0x18)
  * frame #0: 0x00005555557228b8 supertux2`SquirrelVirtualMachine::wait_for_seconds(SQVM*, float) + 8
    frame #1: 0x00005555557088ea supertux2`___lldb_unnamed_symbol1802$$supertux2 + 58
    frame #2: 0x0000555555864690 supertux2`SQVM::CallNative(SQNativeClosure*, long long, long long, SQObjectPtr&, int, bool&, bool&) + 480
    frame #3: 0x000055555586766d supertux2`SQVM::Execute(SQObjectPtr&, long long, long long, SQObjectPtr&, unsigned long long, SQVM::ExecutionType) + 1965
    frame #4: 0x000055555586a5de supertux2`SQVM::Call(SQObjectPtr&, long long, long long, SQObjectPtr&, unsigned long long) + 142
    frame #5: 0x00005555558427a8 supertux2`sq_call + 104
    frame #6: 0x0000555555720fe9 supertux2`compile_and_run(SQVM*, std::istream&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) + 73
    frame #7: 0x000055555571e74b supertux2`ScriptEngine::run_script(std::istream&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) + 187
    frame #8: 0x000055555571e99b supertux2`ScriptEngine::run_script(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) + 459
    frame #9: 0x000055555577238d supertux2`ScriptTrigger::event(Player&, TriggerBase::EventType) + 109
    frame #10: 0x0000555555778072 supertux2`TriggerBase::collision(GameObject&, CollisionHit const&) + 162
    frame #11: 0x000055555580e874 supertux2`CollisionSystem::update() + 996
    frame #12: 0x000055555575fbd8 supertux2`Sector::update(float) + 312
    frame #13: 0x000055555574310b supertux2`GameSession::update(float) + 1163
    frame #14: 0x0000555555676dac supertux2`ScreenManager::update_gamelogic(float) + 60
    frame #15: 0x0000555555678568 supertux2`ScreenManager::run() + 264
    frame #16: 0x0000555555667b2f supertux2`Main::launch_game(CommandLineArguments const&) + 1183
    frame #17: 0x0000555555669a6d supertux2`Main::run(int, char**) + 1213
    frame #18: 0x0000555555664585 supertux2`main + 37
    frame #19: 0x00007ffff68ca09b libc.so.6`__libc_start_main(main=(supertux2`main), argc=1, argv=0x00007fffffffd2c8, init=<unavailable>, fini=<unavailable>, rtld_fini=<unavailable>, stack_end=0x00007fffffffd2b8) at libc-start.c:308
    frame #20: 0x000055555566707a supertux2`_start + 42