#0  0x00007fd56d1b34b5 in *__GI_raise (sig=<value optimized out>)
    at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
        pid = <value optimized out>
        selftid = <value optimized out>
#1  0x00007fd56d1b6ed5 in *__GI_abort () at abort.c:121
        act = {__sigaction_handler = {sa_handler = 0, sa_sigaction = 0}, 
          sa_mask = {__val = {18446744073709551615 <repeats 16 times>}}, 
          sa_flags = 0, sa_restorer = 0}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x00007fd56d1ebc87 in __libc_message (do_abort=<value optimized out>, 
    fmt=<value optimized out>) at ../sysdeps/unix/sysv/linux/libc_fatal.c:189
        ap = {{gp_offset = 40, fp_offset = 48, 
            overflow_arg_area = 0x7fffd4d83af0, 
            reg_save_area = 0x7fffd4d83a00}}
        ap_copy = {{gp_offset = 16, fp_offset = 48, 
            overflow_arg_area = 0x7fffd4d83af0, 
            reg_save_area = 0x7fffd4d83a00}}
        fd = 3
        on_2 = <value optimized out>
        list = <value optimized out>
        nlist = 1024
        cp = <value optimized out>
        written = false
#3  0x00007fd56d1f5d46 in malloc_printerr (action=3, 
    str=0x7fd56d2b7510 "munmap_chunk(): invalid pointer", 
    ptr=<value optimized out>) at malloc.c:6217
        buf = "00007fd56004e480"
        cp = 0x0
#4  0x00007fd56dc3bbb5 in perl_destruct () from /usr/lib/libperl.so.5.10
No symbol table info available.
#5  0x0000000000400d1c in main ()
No symbol table info available.