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Reading symbols from map-test...done.
[New LWP 12516]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `./map-test'.
Program terminated with signal SIGABRT, Aborted.
#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
51      ../sysdeps/unix/sysv/linux/raise.c: No such file or directory.
(gdb)
#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
        set = {__val = {0, 93847666162722, 1, 140737313090992, 0, 0, 206158430256, 140737313091224, 140737313091024, 7964136623682261760,
            93847687695936, 93847666162129, 815868477601, 93847665738592, 140737313091264, 734439407632}}
        pid = <optimized out>
        tid = <optimized out>
        ret = <optimized out>
#1  0x00007fd638611801 in __GI_abort () at abort.c:79
        save_stage = 1
        act = {__sigaction_handler = {sa_handler = 0x35, sa_sigaction = 0x35}, sa_mask = {__val = {140557556360532, 0, 0, 140558016723644,
              93847665917347, 93847742574376, 216266629781715687, 472925007949136087, 281474976729975, 7957688057311552003,
              2314885536443492717, 7017278248329355296, 7308335181711286387, 139776480141671, 140737313091536, 140737313091824}},
          sa_flags = -175263792, sa_restorer = 0x1000}
        sigs = {__val = {32, 0 <repeats 15 times>}}
        __cnt = <optimized out>
        __set = <optimized out>
        __cnt = <optimized out>
        __set = <optimized out>
#2  0x00007fd63865a897 in __libc_message (action=action@entry=do_abort, fmt=fmt@entry=0x7fd638787b9a "%s\n")
    at ../sysdeps/posix/libc_fatal.c:181
        ap = {{gp_offset = 24, fp_offset = 21850, overflow_arg_area = 0x7ffff58db100, reg_save_area = 0x7ffff58db090}}
        fd = <optimized out>
        list = <optimized out>
        nlist = <optimized out>
        cp = <optimized out>
        written = <optimized out>
        on_2 = <optimized out>
        next = <optimized out>
        str = <optimized out>
        len = <optimized out>
        newp = <optimized out>
        iov = <optimized out>
        total = <optimized out>
        cnt = <optimized out>
        buf = <optimized out>
        wp = <optimized out>
        old = <optimized out>
        cnt = <optimized out>
        result = <optimized out>
#3  0x00007fd63866190a in malloc_printerr (str=str@entry=0x7fd638789870 "double free or corruption (out)") at malloc.c:5350
No locals.
#4  0x00007fd638668e75 in _int_free (have_lock=0, p=0x555aa2b9e6e0, av=0x7fd6389bcc40 <main_arena>) at malloc.c:4278
        fb = <optimized out>
        nextsize = <optimized out>
        nextinuse = <optimized out>
        prevsize = <optimized out>
        fwd = <optimized out>
        size = <optimized out>
        nextchunk = <optimized out>
        bck = <optimized out>
        size = <optimized out>
        fb = <optimized out>
        nextchunk = <optimized out>
        nextsize = <optimized out>
        nextinuse = <optimized out>
        prevsize = <optimized out>
        bck = <optimized out>
        fwd = <optimized out>
        tc_idx = <optimized out>
        idx = <optimized out>
        old = <optimized out>
        old2 = <optimized out>
        fail = <optimized out>
        ignore1 = <optimized out>
        ignore2 = <optimized out>
        ignore3 = <optimized out>
        ignore = <optimized out>
        __atg1_result = <optimized out>
        ret = <optimized out>
        ret = <optimized out>
        ret = <optimized out>
        ret = <optimized out>
        ignore1 = <optimized out>
        ignore2 = <optimized out>
        ignore3 = <optimized out>
        heap = <optimized out>
        ignore = <optimized out>
#5  __GI___libc_free (mem=0x555aa2b9e6f0) at malloc.c:3124
        ar_ptr = 0x7fd6389bcc40 <main_arena>
        p = 0x555aa2b9e6e0
        hook = <optimized out>
        mem = 0x555aa2b9e6f0
        ar_ptr = <optimized out>
        p = <optimized out>
        hook = <optimized out>
        __x = <optimized out>
        ar_ptr = <optimized out>
        p = <optimized out>
        hook = <optimized out>
        __x = <optimized out>
#6  0x0000555a9cc5d859 in std::_Sp_counted_base<(__gnu_cxx::_Lock_policy)2>::_M_release (this=0x555aa2bc7610)
    at /usr/include/c++/7/bits/shared_ptr_base.h:154
        this = 0x555aa2bc7610
#7  std::__shared_count<(__gnu_cxx::_Lock_policy)2>::~__shared_count (this=0x7ffff58db188, __in_chrg=<optimized out>)
    at /usr/include/c++/7/bits/shared_ptr_base.h:684
No locals.
#8  std::__shared_ptr<s_battleground_queue, (__gnu_cxx::_Lock_policy)2>::~__shared_ptr (this=0x7ffff58db180, __in_chrg=<optimized out>)
    at /usr/include/c++/7/bits/shared_ptr_base.h:1123
No locals.
#9  std::shared_ptr<s_battleground_queue>::~shared_ptr (this=0x7ffff58db180, __in_chrg=<optimized out>)
    at /usr/include/c++/7/bits/shared_ptr.h:93
No locals.
#10 bg_on_ready_loopback (tid=<optimized out>, tick=<optimized out>, id=<optimized out>, data=<optimized out>) at battleground.cpp:678
        queue = <optimized out>
        __FUNCTION__ = "bg_on_ready_loopback"
        bg = std::shared_ptr<s_battleground_type> (use count 2, weak count 0) = {get() = 0x555aa1519af0}
#11 0x0000555a9cc1183a in do_timer (tick=<optimized out>) at timer.cpp:374
        tid = 217
        diff = -5
        diff = <optimized out>
        tid = <optimized out>
        _i_ = <optimized out>
        _lchild_ = <optimized out>
        _rchild_ = <optimized out>
#12 main (argc=<optimized out>, argv=<optimized out>) at core.cpp:368
        next = <optimized out>