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C++ Crash with Fir3elements 3777 (Log Provided)

Extrodus

Extrodus

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Crash Information:
Server crashes when a player uses "/cast on" -> spectator 1 joins cast -> spectator 1 leaves (ctrl+l) -> server crashes.
Sometimes can happen just from using "/cast on" then "/cast off" as well.

Sources: GitHub - Fir3element/3777: The Forgotten Server 0.4 (rev 3777) with several improvements and bugfixes (https://github.com/Fir3element/3777)
OS: Ubuntu 20.04.3 LTS (Crash does NOT happen on Ubuntu 16.04.)

sudo apt-get update
sudo apt-get install --no-install-recommends -y git autoconf automake pkg-config build-essential cmake liblua5.1-0-dev libsqlite3-dev libmysqlclient-dev libxml2-dev libgmp3-dev libboost-filesystem-dev libboost-regex-dev libboost-thread-dev
git clone https://github.com/Fir3element/3777
cd /3777-master
mkdir build
cd build
cmake ..
make -j$(grep processor /proc/cpuinfo | wc -l)

Crash Log Information:
C++: 
(gdb) bt full
#0  0x0000ffffacfeb24c in std::_Rb_tree_increment(std::_Rb_tree_node_base*) ()
   from /lib/aarch64-linux-gnu/libstdc++.so.6
No symbol table info available.
#1  0x0000aaaad6c04bd8 in ProtocolGame::logout(bool, bool) ()
No symbol table info available.
#2  0x0000aaaad6ad29c8 in Dispatcher::dispatcherThread(void*) ()
No symbol table info available.
#3  0x0000ffffad392624 in ?? () from /lib/aarch64-linux-gnu/libboost_thread.so.1.71.0
No symbol table info available.
#4  0x0000fffface39624 in start_thread (arg=0xffffad392598) at pthread_create.c:477
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {281473546450380, 281474911953024,
                281474911953022, 281473582485504, 281474911953023, 281473587946904,
                281473546451120, 281473546449328, 281473582489600, 281473546449328,
                281473546447248, 14304704568303608131, 0, 14304704568342650319, 0, 0, 0,
                0, 0, 0, 0, 0}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0,
              0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
#5  0x0000ffffacd9049c in thread_start ()
    at ../sysdeps/unix/sysv/linux/aarch64/clone.S:78
No locals.

C++: 
bool ProtocolGame::logout(bool displayEffect, bool forceLogout)
{
    //dispatcher thread
    if(!player)
        return false;
        
    if(getIsCast() && !player->isAccountManager())
    {
        PlayerCast pc = player->getCast();
        for(AutoList<ProtocolGame>::iterator it = Player::cSpectators.begin(); it != Player::cSpectators.end(); ++it)
            if(it->second == this)
                if(Connection_ptr connection = it->second->getConnection())
                {
                    PrivateChatChannel* channel = g_chat.getPrivateChannel(player);
                    if(channel) {
                        channel->talk("", SPEAK_CHANNEL_RA, (getViewerName() + " has left the cast."));
                    }

                    connection->close();
                    player->removeCastViewer(it->first);
                }
        return false;
    }

    if(!player->isRemoved())
    {
        if(!forceLogout)
        {
            if(!IOLoginData::getInstance()->hasCustomFlag(player->getAccount(), PlayerCustomFlag_CanLogoutAnytime))
            {
                if(player->getTile()->hasFlag(TILESTATE_NOLOGOUT))
                {
                    player->sendCancelMessage(RET_YOUCANNOTLOGOUTHERE);
                    return false;
                }

                if(player->getZone() != ZONE_PROTECTION && player->hasCondition(CONDITION_INFIGHT))
                {
                    player->sendCancelMessage(RET_YOUMAYNOTLOGOUTDURINGAFIGHT);
                    return false;
                }

                if(!g_creatureEvents->playerLogout(player, false)) //let the script handle the error message
                    return false;
            }
            else
                g_creatureEvents->playerLogout(player, true);
        }
        else if(!g_creatureEvents->playerLogout(player, true))
            return false;

        if(displayEffect && !player->isGhost())
            g_game.addMagicEffect(player->getPosition(), MAGIC_EFFECT_POFF);
    }

    player->kickCastViewers();

    if(Connection_ptr connection = getConnection())
        connection->close();

    if(player->isRemoved())
        return true;

    return g_game.removeCreature(player);
}

@Fir3element - Any ideas what could be causing this?

Regards and as always, thank you for any help in advance!
 
Last edited:
Solution
Gesior.pl
Finally I found my old fix. Someone reported it few months ago.
I've made pull request with these changes:
github.com

Fix Cast System crashes on caster/viewer logout by gesior · Pull Request #1 · Fir3element/3777

As described here: https://otland.net/threads/crash-with-fir3elements-3777-log-provided.281821/ Cast System sometimes - not always - crashes server, when caster/viewer logouts.
github.com github.com

protocolgame.cpp:
C++: 
bool ProtocolGame::logout(bool displayEffect, bool forceLogout)
{
    //dispatcher thread
    if(!player)
        return false;
       
    if(getIsCast() && !player->isAccountManager())
    {
        PlayerCast pc = player->getCast();
        for(AutoList<ProtocolGame>::iterator it = Player::cSpectators.begin(); it != Player::cSpectators.end(); ++it)
            if(it->second == this)
                if(Connection_ptr connection = it->second->getConnection())
                {
                    PrivateChatChannel* channel =...
Sort by date Sort by votes
As I remember it's this:
C++: 
        PlayerCast pc = player->getCast();
        for(AutoList<ProtocolGame>::iterator it = Player::cSpectators.begin(); it != Player::cSpectators.end(); ++it)
            if(it->second == this)
                if(Connection_ptr connection = it->second->getConnection())
                {
                    PrivateChatChannel* channel = g_chat.getPrivateChannel(player);
                    if(channel) {
                        channel->talk("", SPEAK_CHANNEL_RA, (getViewerName() + " has left the cast."));
                    }

                    connection->close();
                    player->removeCastViewer(it->first);
                }
        return false;
Iterating over list:
C++: 
for(AutoList<ProtocolGame>::iterator it = Player::cSpectators.begin(); it != Player::cSpectators.end(); ++it)
and removing elements of list in same time:
C++: 
player->removeCastViewer(it->first);
Code that removes cSpectators element is in function removeCastViewer.

There should be some code that reset it after every element removed.
Maybe something like:
C++: 
player->removeCastViewer(it->first);
it = Player::cSpectators.begin(); // new line
It's not efficient solution, but to make it efficient, you would need to rewrite big part of 'cast system'.
 
Upvote 0 Downvote
Gesior.pl said:
As I remember it's this:
C++: 
        PlayerCast pc = player->getCast();
        for(AutoList<ProtocolGame>::iterator it = Player::cSpectators.begin(); it != Player::cSpectators.end(); ++it)
            if(it->second == this)
                if(Connection_ptr connection = it->second->getConnection())
                {
                    PrivateChatChannel* channel = g_chat.getPrivateChannel(player);
                    if(channel) {
                        channel->talk("", SPEAK_CHANNEL_RA, (getViewerName() + " has left the cast."));
                    }

                    connection->close();
                    player->removeCastViewer(it->first);
                }
        return false;
Iterating over list:
C++: 
for(AutoList<ProtocolGame>::iterator it = Player::cSpectators.begin(); it != Player::cSpectators.end(); ++it)
and removing elements of list in same time:
C++: 
player->removeCastViewer(it->first);
Code that removes cSpectators element is in function removeCastViewer.

There should be some code that reset it after every element removed.
Maybe something like:
C++: 
player->removeCastViewer(it->first);
it = Player::cSpectators.begin(); // new line
It's not efficient solution, but to make it efficient, you would need to rewrite big part of 'cast system'.
Click to expand...
Thanks for the response; tested the code and server is still crashing.
You are definitely right about the issue as it seems that is how they fixed the crash with Slavi~


C++: 
if(getIsCast() && !player->isAccountManager())
    {
        PlayerCast pc = player->getCast();
        for(AutoList<ProtocolGame>::iterator it = Player::cSpectators.begin(); it != Player::cSpectators.end(); ++it)
            if(it->second == this)
                if(Connection_ptr connection = it->second->getConnection())
                {
                    PrivateChatChannel* channel = g_chat.getPrivateChannel(player);
                    if(channel) {
                        channel->talk("", SPEAK_CHANNEL_RA, (getViewerName() + " has left the cast."));
                    }

                    connection->close();
                    player->removeCastViewer(it->first);
                    it = Player::cSpectators.begin(); // new line
                }
        return false;
    }
 
Upvote 0 Downvote
Extrodus said:
Thanks for the response; tested the code and server is still crashing.
You are definitely right about the issue as it seems that is how they fixed the crash with Slavi~
Click to expand...
There is also other code with casts and removing element from list while iterating over it.
It's called in ProtocolGame::logout in line:
C++: 
player->kickCastViewers();
It's defined in player.h:
C++: 
void kickCastViewers()
{
   for(AutoList<ProtocolGame>::iterator it = cSpectators.begin(); it != cSpectators.end(); ++it)
   {
      if(it->second->getPlayer() == this)
      {
         it->second->disconnect();
         it->second->unRef();
         removeCastViewer(it->first);
      }
   }
   cast = PlayerCast();
}
So again, replace:
C++: 
removeCastViewer(it->first);
with:
C++: 
removeCastViewer(it->first);
it = cSpectators.begin();
 
Upvote 0 Downvote
Gesior.pl said:
There is also other code with casts and removing element from list while iterating over it.
It's called in ProtocolGame::logout in line:
C++: 
player->kickCastViewers();
It's defined in player.h:
C++: 
void kickCastViewers()
{
   for(AutoList<ProtocolGame>::iterator it = cSpectators.begin(); it != cSpectators.end(); ++it)
   {
      if(it->second->getPlayer() == this)
      {
         it->second->disconnect();
         it->second->unRef();
         removeCastViewer(it->first);
      }
   }
   cast = PlayerCast();
}
So again, replace:
C++: 
removeCastViewer(it->first);
with:
C++: 
removeCastViewer(it->first);
it = cSpectators.begin();
Click to expand...
Unfortunately this still causes the server to crash when the spectator logs out; I really appreciate youre help though!

Core/BT Full
C++: 
(gdb) thread apply all bt

Thread 3 (Thread 0xffffaf6371b0 (LWP 11243)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0xffffaf636818, clockid=<optimized out>, expected=0, futex_word=0xaaaacb1c927c <Scheduler::getInstance()::scheduler+204>) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0xffffaf636818, clockid=<optimized out>, mutex=0xaaaacb1c9220 <Scheduler::getInstance()::scheduler+112>, cond=0xaaaacb1c9250 <Scheduler::getInstance()::scheduler+160>) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0xaaaacb1c9250 <Scheduler::getInstance()::scheduler+160>, mutex=0xaaaacb1c9220 <Scheduler::getInstance()::scheduler+112>, abstime=0xffffaf636818) at pthread_cond_wait.c:665
#3  0x0000aaaacb003ce8 in boost::condition_variable::do_wait_until(boost::unique_lock<boost::mutex>&, boost::detail::mono_platform_timepoint const&) ()
#4  0x0000aaaacb003c10 in boost::condition_variable::timed_wait(boost::unique_lock<boost::mutex>&, boost::posix_time::ptime const&) ()
#5  0x0000aaaacb002bf8 in Scheduler::schedulerThread(void*) ()
#6  0x0000aaaacae16350 in void boost::_bi::list1<boost::_bi::value<void*> >::operator()<void (*)(void*), boost::_bi::list0>(boost::_bi::type<void>, void (*&)(void*), boost::_bi::list0&, int) ()
#7  0x0000aaaacae1616c in boost::_bi::bind_t<void, void (*)(void*), boost::_bi::list1<boost::_bi::value<void*> > >::operator()() ()
#8  0x0000aaaacae15ec0 in boost::detail::thread_data<boost::_bi::bind_t<void, void (*)(void*), boost::_bi::list1<boost::_bi::value<void*> > > >::run() ()
#9  0x0000ffffb25ee624 in ?? () from /lib/aarch64-linux-gnu/libboost_thread.so.1.71.0
#10 0x0000ffffb2095624 in start_thread (arg=0xffffb25ee598) at pthread_create.c:477
#11 0x0000ffffb1fec49c in thread_start () at ../sysdeps/unix/sysv/linux/aarch64/clone.S:78

Thread 2 (Thread 0xffffafe5b1b0 (LWP 11242)):
#0  0x0000ffffb2247250 in std::_Rb_tree_increment(std::_Rb_tree_node_base*) () from /lib/aarch64-linux-gnu/libstdc++.so.6
#1  0x0000aaaacad7fb6c in std::_Rb_tree_iterator<std::pair<unsigned int const, ProtocolGame*> >::operator++() ()
#2  0x0000aaaacafc77a0 in ProtocolGame::logout(bool, bool) ()
#3  0x0000aaaacafec108 in boost::_mfi::mf2<bool, ProtocolGame, bool, bool>::operator()(ProtocolGame*, bool, bool) const ()
--Type <RET> for more, q to quit, c to continue without paging--
#4  0x0000aaaacafe8078 in bool boost::_bi::list3<boost::_bi::value<ProtocolGame*>, boost::_bi::value<bool>, boost::_bi::value<bool> >::operator()<bool, boost::_mfi::mf2<bool, ProtocolGame, bool, bool>, boost::_bi::list0>(boost::_bi::type<bool>, boost::_mfi::mf2<bool, ProtocolGame, bool, bool>&, boost::_bi::list0&, long) ()
#5  0x0000aaaacafe50d4 in boost::_bi::bind_t<bool, boost::_mfi::mf2<bool, ProtocolGame, bool, bool>, boost::_bi::list3<boost::_bi::value<ProtocolGame*>, boost::_bi::value<bool>, boost::_bi::value<bool> > >::operator()() ()
#6  0x0000aaaacafe35e8 in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<bool, boost::_mfi::mf2<bool, ProtocolGame, bool, bool>, boost::_bi::list3<boost::_bi::value<ProtocolGame*>, boost::_bi::value<bool>, boost::_bi::value<bool> > >, void>::invoke(boost::detail::function::function_buffer&) ()
#7  0x0000aaaacae1313c in boost::function0<void>::operator()() const ()
#8  0x0000aaaacae127e4 in Task::operator()() ()
#9  0x0000aaaacae111fc in Dispatcher::dispatcherThread(void*) ()
#10 0x0000aaaacae16350 in void boost::_bi::list1<boost::_bi::value<void*> >::operator()<void (*)(void*), boost::_bi::list0>(boost::_bi::type<void>, void (*&)(void*), boost::_bi::list0&, int) ()
#11 0x0000aaaacae1616c in boost::_bi::bind_t<void, void (*)(void*), boost::_bi::list1<boost::_bi::value<void*> > >::operator()() ()
#12 0x0000aaaacae15ec0 in boost::detail::thread_data<boost::_bi::bind_t<void, void (*)(void*), boost::_bi::list1<boost::_bi::value<void*> > > >::run() ()
#13 0x0000ffffb25ee624 in ?? () from /lib/aarch64-linux-gnu/libboost_thread.so.1.71.0
#14 0x0000ffffb2095624 in start_thread (arg=0xffffb25ee598) at pthread_create.c:477
#15 0x0000ffffb1fec49c in thread_start () at ../sysdeps/unix/sysv/linux/aarch64/clone.S:78

Thread 1 (Thread 0xffffafe61440 (LWP 11241)):
#0  0x0000ffffb1fec5c4 in __GI_epoll_pwait (epfd=<optimized out>, events=0xffffe67bd638, maxevents=128, timeout=-1, set=0x0) at ../sysdeps/unix/sysv/linux/epoll_pwait.c:42
#1  0x0000aaaacadb1468 in boost::asio::detail::epoll_reactor::run(long, boost::asio::detail::op_queue<boost::asio::detail::scheduler_operation>&) ()
#2  0x0000aaaacadb2a64 in boost::asio::detail::scheduler::do_run_one(boost::asio::detail::conditionally_enabled_mutex::scoped_lock&, boost::asio::detail::scheduler_thread_info&, boost::system::error_code const&) ()
--Type <RET> for more, q to quit, c to continue without paging--
#3  0x0000aaaacadb2510 in boost::asio::detail::scheduler::run(boost::system::error_code&) ()
#4  0x0000aaaacb00c448 in boost::asio::io_context::run() ()
#5  0x0000aaaacb00b3cc in ServiceManager::run() ()
#6  0x0000aaaacaf7731c in main ()
 
Last edited:
Upvote 0 Downvote
Finally I found my old fix. Someone reported it few months ago.
I've made pull request with these changes:
github.com

Fix Cast System crashes on caster/viewer logout by gesior · Pull Request #1 · Fir3element/3777

As described here: https://otland.net/threads/crash-with-fir3elements-3777-log-provided.281821/ Cast System sometimes - not always - crashes server, when caster/viewer logouts.
github.com github.com

protocolgame.cpp:
C++: 
bool ProtocolGame::logout(bool displayEffect, bool forceLogout)
{
    //dispatcher thread
    if(!player)
        return false;
       
    if(getIsCast() && !player->isAccountManager())
    {
        PlayerCast pc = player->getCast();
        for(AutoList<ProtocolGame>::iterator it = Player::cSpectators.begin(); it != Player::cSpectators.end(); ++it)
            if(it->second == this)
                if(Connection_ptr connection = it->second->getConnection())
                {
                    PrivateChatChannel* channel = g_chat.getPrivateChannel(player);
                    if(channel) {
                        channel->talk("", SPEAK_CHANNEL_RA, (getViewerName() + " has left the cast."));
                    }

                    connection->close();
                    player->removeCastViewer(it->first);
                    // we are kicking 1 cast viewer, there can't be more than 1 on list
                    // break loop after removing 1, so it won't iterate over modified list
                    return false;
                }
        return false;
    }

    if(!player->isRemoved())
    {
        if(!forceLogout)
        {
            if(!IOLoginData::getInstance()->hasCustomFlag(player->getAccount(), PlayerCustomFlag_CanLogoutAnytime))
            {
                if(player->getTile()->hasFlag(TILESTATE_NOLOGOUT))
                {
                    player->sendCancelMessage(RET_YOUCANNOTLOGOUTHERE);
                    return false;
                }

                if(player->getZone() != ZONE_PROTECTION && player->hasCondition(CONDITION_INFIGHT))
                {
                    player->sendCancelMessage(RET_YOUMAYNOTLOGOUTDURINGAFIGHT);
                    return false;
                }

                if(!g_creatureEvents->playerLogout(player, false)) //let the script handle the error message
                    return false;
            }
            else
                g_creatureEvents->playerLogout(player, true);
        }
        else if(!g_creatureEvents->playerLogout(player, true))
            return false;

        if(displayEffect && !player->isGhost())
            g_game.addMagicEffect(player->getPosition(), MAGIC_EFFECT_POFF);
    }

    player->kickCastViewers();

    if(Connection_ptr connection = getConnection())
        connection->close();

    if(player->isRemoved())
        return true;

    return g_game.removeCreature(player);
}
player.h
C++: 
        void kickCastViewers()
        {
            // use proper 'remove while iterating over list' code:
            // it = list.erase(it);
            AutoList<ProtocolGame>::iterator it = cSpectators.begin();
            while (it != cSpectators.end()) {
                if (it->second->getPlayer() == this) {
                    it->second->disconnect();
                    it->second->unRef();
                    it = cSpectators.erase(it);
                } else {
                    ++it;
                }
            }
            cast = PlayerCast();
        }

        void kickCastViewerByName(std::string n)
        {
            for(AutoList<ProtocolGame>::iterator it = cSpectators.begin(); it != cSpectators.end(); ++it) if(it->second->getPlayer() == this)
                if(it->second->getViewerName() == n && it->second->getPlayer() == this)
                {
                    it->second->disconnect();
                    it->second->unRef();
                    removeCastViewer(it->first);
                    // there should be 1 cast viewer with given name
                    // break loop after removing 1, so it won't iterate over modified list
                    return;
                }
        }
 
Last edited:
Upvote 1 Downvote
Solution
Gesior.pl said:
Finally I found my old fix. Someone reported it few months ago.
I've made pull request with these changes:
github.com

Fix Cast System crashes on caster/viewer logout by gesior · Pull Request #1 · Fir3element/3777

As described here: https://otland.net/threads/crash-with-fir3elements-3777-log-provided.281821/ Cast System sometimes - not always - crashes server, when caster/viewer logouts.
github.com github.com

protocolgame.cpp:
C++: 
bool ProtocolGame::logout(bool displayEffect, bool forceLogout)
{
    //dispatcher thread
    if(!player)
        return false;
      
    if(getIsCast() && !player->isAccountManager())
    {
        PlayerCast pc = player->getCast();
        for(AutoList<ProtocolGame>::iterator it = Player::cSpectators.begin(); it != Player::cSpectators.end(); ++it)
            if(it->second == this)
                if(Connection_ptr connection = it->second->getConnection())
                {
                    PrivateChatChannel* channel = g_chat.getPrivateChannel(player);
                    if(channel) {
                        channel->talk("", SPEAK_CHANNEL_RA, (getViewerName() + " has left the cast."));
                    }

                    connection->close();
                    player->removeCastViewer(it->first);
                    // we are kicking 1 cast viewer, there can't be more than 1 on list
                    // break loop after removing 1, so it won't iterate over modified list
                    return false;
                }
        return false;
    }

    if(!player->isRemoved())
    {
        if(!forceLogout)
        {
            if(!IOLoginData::getInstance()->hasCustomFlag(player->getAccount(), PlayerCustomFlag_CanLogoutAnytime))
            {
                if(player->getTile()->hasFlag(TILESTATE_NOLOGOUT))
                {
                    player->sendCancelMessage(RET_YOUCANNOTLOGOUTHERE);
                    return false;
                }

                if(player->getZone() != ZONE_PROTECTION && player->hasCondition(CONDITION_INFIGHT))
                {
                    player->sendCancelMessage(RET_YOUMAYNOTLOGOUTDURINGAFIGHT);
                    return false;
                }

                if(!g_creatureEvents->playerLogout(player, false)) //let the script handle the error message
                    return false;
            }
            else
                g_creatureEvents->playerLogout(player, true);
        }
        else if(!g_creatureEvents->playerLogout(player, true))
            return false;

        if(displayEffect && !player->isGhost())
            g_game.addMagicEffect(player->getPosition(), MAGIC_EFFECT_POFF);
    }

    player->kickCastViewers();

    if(Connection_ptr connection = getConnection())
        connection->close();

    if(player->isRemoved())
        return true;

    return g_game.removeCreature(player);
}
player.h
C++: 
        void kickCastViewers()
        {
            // use proper 'remove while iterating over list' code:
            // it = list.erase(it);
            AutoList<ProtocolGame>::iterator it = cSpectators.begin();
            while (it != cSpectators.end()) {
                if (it->second->getPlayer() == this) {
                    it->second->disconnect();
                    it->second->unRef();
                    it = cSpectators.erase(it);
                } else {
                    ++it;
                }
            }
            cast = PlayerCast();
        }

        void kickCastViewerByName(std::string n)
        {
            for(AutoList<ProtocolGame>::iterator it = cSpectators.begin(); it != cSpectators.end(); ++it) if(it->second->getPlayer() == this)
                if(it->second->getViewerName() == n && it->second->getPlayer() == this)
                {
                    it->second->disconnect();
                    it->second->unRef();
                    removeCastViewer(it->first);
                    // there should be 1 cast viewer with given name
                    // break loop after removing 1, so it won't iterate over modified list
                    return;
                }
        }
Click to expand...

Windows devcpp
Error:
C++: 
actions.cpp In member function 'void Player::kickCastViewers()':
237 player.h no match for 'operator=' in 'it = Player::cSpectators.AutoList<ProtocolGame>::<anonymous>.std::map<_Key, _Tp, _Compare, _Alloc>::erase [with _Key = unsigned int, _Tp = ProtocolGame*, _Compare = std::less<unsigned int>, _Alloc = std::allocator<std::pair<const unsigned int, ProtocolGame*> >](it)'
candidates are: std::_Rb_tree_iterator<std::pair<const unsigned int, ProtocolGame*> >& std::_Rb_tree_iterator<std::pair<const unsigned int, ProtocolGame*> >::operator=(const std::_Rb_tree_iterator<std::pair<const unsigned int, ProtocolGame*> >&)
 
Upvote 0 Downvote
Matheuuss said:
Windows devcpp
Error:
C++: 
actions.cpp In member function 'void Player::kickCastViewers()':
237 player.h no match for 'operator=' in 'it = Player::cSpectators.AutoList<ProtocolGame>::<anonymous>.std::map<_Key, _Tp, _Compare, _Alloc>::erase [with _Key = unsigned int, _Tp = ProtocolGame*, _Compare = std::less<unsigned int>, _Alloc = std::allocator<std::pair<const unsigned int, ProtocolGame*> >](it)'
candidates are: std::_Rb_tree_iterator<std::pair<const unsigned int, ProtocolGame*> >& std::_Rb_tree_iterator<std::pair<const unsigned int, ProtocolGame*> >::operator=(const std::_Rb_tree_iterator<std::pair<const unsigned int, ProtocolGame*> >&)
Click to expand...
Probably DevCpp lives in 2010 year and it does not support it = cSpectators.erase(it); :(
(map.erase function does not return anything, since C++11 (2011) it does return iterator)

You can try to replace:
Code: 
it = cSpectators.erase(it);
with:
Code: 
cSpectators.erase(it);
it = cSpectators.begin();
 
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