102> exec:start().
{ok,<0.237.0>}
103> {ok, Pid, _} = exec:run("cat", [stdin, stdout, stderr]).
{ok,<0.239.0>,3296626}
104> exec:send(Pid, erlang:list_to_binary([A rem 250 || A <- lists:seq(1,65511)])).
ok
105> exec:send(Pid, erlang:list_to_binary([A rem 250 || A <- lists:seq(1,65512)])).
=ERROR REPORT==== 19-Feb-2025::14:31:01.717063 ===
** Generic server exec terminating 
** Last message in was {'EXIT',#Port<0.14>,einval}
** When Server state == {state,#Port<0.14>,0,{[],[]},[],exec_mon,false,false}
** Reason for termination ==
** einval

ok
=CRASH REPORT==== 19-Feb-2025::14:31:01.717300 ===
  crasher:
    initial call: exec:init/1
    pid: <0.237.0>
    registered_name: exec
    exception exit: einval
      in function  gen_server:handle_common_reply/8 (gen_server.erl, line 1226)
    ancestors: [<0.222.0>,<0.85.0>,<0.71.0>,<0.66.0>,<0.70.0>,<0.65.0>,
                  kernel_sup,<0.47.0>]
    message_queue_len: 0
    messages: []
    links: [<0.239.0>]
    dictionary: []
    trap_exit: true
    status: running
    heap_size: 2586
    stack_size: 28
    reductions: 5704
  neighbours: