[erlang-bugs] Eunit Possibly Failing Under Windows

Bjorn Gustavsson <>
Thu Apr 30 15:34:26 CEST 2009

On Thu, Apr 30, 2009 at 1:43 AM, Larry Jones <> wrote:
> When I try to run eunit tests on Windows (XP SP2) using erlang 5.7.1, I keep receiving the following  error:
> $ erl -noshell -s eunit test reverse_test -s init stop
> reverse_test: reverse_test (module 'reverse_test')...*skipped*
> undefined
> *unexpected termination of test process*
> ::{badarg,[{io,put_chars,[<0.32.0>,unicode,<<>>]},
>           {eunit_proc,handle_test,2},
>           {eunit_proc,tests_inorder,3},
>           {eunit_proc,with_timeout,3},
>           {eunit_proc,run_group,2},
>           {eunit_proc,child_process,2}]}

It is a known problem. We have now posted a correction of the eunit
application at


You need to manually unpack and install the application in "lib"
directory of the
Erlang/OTP installation (alternatively, use "erl -pa

Sorry for the inconvenience.

Björn Gustavsson, Erlang/OTP, Ericsson AB

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