stack level too deep (SystemStackError)

可以采用下面方式解决：

liweihui@liweihui-desktop:~/Documents/zbs$ ulimit -a
core file size          (blocks, -c) 0
data seg size           (kbytes, -d) unlimited
scheduling priority             (-e) 0
file size               (blocks, -f) unlimited
pending signals                 (-i) 12275
max locked memory       (kbytes, -l) 32
max memory size         (kbytes, -m) unlimited
open files                      (-n) 1024
pipe size            (512 bytes, -p) 8
POSIX message queues     (bytes, -q) 819200
real-time priority              (-r) 0
stack size              (kbytes, -s) 8192
cpu time               (seconds, -t) unlimited
max user processes              (-u) 12275
virtual memory          (kbytes, -v) unlimited
file locks                      (-x) unlimited

可以通过下面命令改变stack的大小

ulimit -s 16384