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Date:   Fri, 27 Apr 2018 15:05:15 -0600
From:   Shuah Khan <shuah@...nel.org>
To:     Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
        Shuah Khan <shuahkh@....samsung.com>
Cc:     linux-kernel <linux-kernel@...r.kernel.org>,
        linux-kselftest <linux-kselftest@...r.kernel.org>,
        Shuah Khan <shuah@...nel.org>
Subject: Re: [PATCH 1/1] selftests: Fix lib.mk run_tests target shell script

On 04/27/2018 02:42 PM, Shuah Khan wrote:
> On 04/27/2018 02:17 PM, Mathieu Desnoyers wrote:
>> ----- On Nov 1, 2017, at 6:28 PM, Shuah Khan shuahkh@....samsung.com wrote:
>>
>>> On 11/01/2017 04:24 PM, Mathieu Desnoyers wrote:
>>>> ----- On Nov 1, 2017, at 6:22 PM, Mathieu Desnoyers
>>>> mathieu.desnoyers@...icios.com wrote:
>>>>
>>>>> ----- On Nov 1, 2017, at 5:33 PM, Shuah Khan shuahkh@....samsung.com wrote:
>>>>>
>>>>>> On 10/28/2017 07:46 AM, Mathieu Desnoyers wrote:
>>>>>>> Within run_tests target, the whole script needs to be executed within
>>>>>>> the same shell and not as separate subshells, so the initial test_num
>>>>>>> variable set to 0 is still present when executing "test_num=`echo
>>>>>>> $$test_num+1 | bc`;".
>>>>>>>
>>>>>>> Demonstration of the issue (make run_tests):
>>>>>>>
>>>>>>> TAP version 13
>>>>>>> (standard_in) 1: syntax error
>>>>>>> selftests: basic_test
>>>>>>> ========================================
>>>>>>> ok 1.. selftests: basic_test [PASS]
>>>>>>> (standard_in) 1: syntax error
>>>>>>> selftests: basic_percpu_ops_test
>>>>>>> ========================================
>>>>>>> ok 1.. selftests: basic_percpu_ops_test [PASS]
>>>>>>> (standard_in) 1: syntax error
>>>>>>> selftests: param_test
>>>>>>> ========================================
>>>>>>> ok 1.. selftests: param_test [PASS]
>>>>>>
>>>>>> Hi Mathieu,
>>>>>>
>>>>>> Odd. I don't see the error. I am curious if this specific to
>>>>>> env. Can you reproduce this with one of the existing tests,
>>>>>> kcmp or breakpoints
>>>>>
>>>>> Yes, it reproduces:
>>>>>
>>>>> cd tools/testing/selftests/kcmp
>>>>> make run_tests
>>>>> gcc -I../../../../usr/include/    kcmp_test.c  -o
>>>>> /home/efficios/git/linux-rseq/tools/testing/selftests/kcmp/kcmp_test
>>>>> TAP version 13
>>>>> (standard_in) 1: syntax error
>>>>> selftests: kcmp_test
>>>>> ========================================
>>>>> ok 1.. selftests: kcmp_test [PASS]
>>>>>
>>>>> cd tools/testing/selftests/breakpoints
>>>>> make run_tests
>>>>> gcc     step_after_suspend_test.c  -o
>>>>> /home/efficios/git/linux-rseq/tools/testing/selftests/breakpoints/step_after_suspend_test
>>>>> gcc     breakpoint_test.c  -o
>>>>> /home/efficios/git/linux-rseq/tools/testing/selftests/breakpoints/breakpoint_test
>>>>> TAP version 13
>>>>> (standard_in) 1: syntax error
>>>>> selftests: step_after_suspend_test
>>>>> ========================================
>>>>> not ok 1.. selftests:  step_after_suspend_test [FAIL]
>>>>> (standard_in) 1: syntax error
>>>>> selftests: breakpoint_test
>>>>> ========================================
>>>>> ok 1.. selftests: breakpoint_test [PASS]
>>>>>
>>>>
>>>> The version of "make" on that machine is:
>>>>
>>>> make --version
>>>> GNU Make 3.81
>>>> Copyright (C) 2006  Free Software Foundation, Inc.
>>>> This is free software; see the source for copying conditions.
>>>> There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
>>>> PARTICULAR PURPOSE.
>>>>
>>>> This program built for x86_64-pc-linux-gnu
>>>>
>>>> (if it helps reproducing)
>>>>
>>>
>>> Yup that's it. I have
>>>
>>> GNU Make 4.1
>>> Built for x86_64-pc-linux-gnu
>>> Copyright (C) 1988-2014 Free Software Foundation, Inc.
>>> License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
>>> This is free software: you are free to change and redistribute it.
>>> There is NO WARRANTY, to the extent permitted by law.
>>>
>>> I will test with your patch and see what happens in my env.
>>
>> Hi,
>>
>> I still see the problem with v4.17-rc2. Did you have time to
>> consider merging my fix ?
>>
>> Thanks,
>>
>> Mathieu
> 
> Sorry for the delay. It slipped through. I will queue this for the next rc. Thanks for
> the ping. Hope it applies :)
> 
> thanks,
> -- Shuah
> 
> 

Now I remember why I didn't pull this in. With your patch, I see the same
failures you are seeing in my env. with 

GNU Make 4.1
Built for x86_64-pc-linux-gnu
Copyright (C) 1988-2014 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

I will have to figure out a different way to fix the problem.

thanks,
-- Shuah

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