ExRepro
Steps to reproduce:
iex -S mix
iex(1)> Kernel.send :repro, :hi
ping
:hi
That works.. Now...
iex(2)> :int.i ExRepro
{:module, ExRepro}
iex(3)> Kernel.send :repro, :hi
:hi
iex(4)>
18:14:23.774 [error] Task #PID<0.84.0> started from #PID<0.83.0> terminating
** (UndefinedFunctionError) function anonymous fn/0 in ExRepro.loop/0 is undefined or private
(ex_repro) anonymous fn() in ExRepro.loop/0
(ex_repro) lib/ex_repro.ex:12: ExRepro.loop/0
(elixir) lib/task/supervised.ex:94: Task.Supervised.do_apply/2
(stdlib) proc_lib.erl:240: :proc_lib.init_p_do_apply/3
Function: #Function<1.21253709/0 in ExRepro.start/2>
Args: []
Basically, once the interpreter mode is activated for the module, anonymous
functions cease to work. That is, until the module is reloaded. So, if the end
of loop/0 were changed to be ExRepro.loop, it would start working once again.