headache on build repeatibility: octave vs BLODA ?

[Marco Atzeri]

Am 29.01.2020 um 10:44 schrieb Corinna Vinschen:
> On Jan 28 07:41, Marco Atzeri wrote:
>> Am 27.01.2020 um 12:33 schrieb Takashi Yano:
>>> On Mon, 27 Jan 2020 07:45:08 +0100
>>> Marco Atzeri wrote:
>>>> Can you and Takashi provide me your cygcheck.out so that I can look on
>>>> possible difference that could influence the build behaviour.
>>>
>>> Attached.
>>>
>>
>> Thanks Takashi,
>>
>> I duplicated your installation from scratch on my W10 Home
>> and it fails again in the same place.
>>
>> So I am now almost sure that the recent MS updates changed/broke
>> something in W10 Home. :-((
>>
>> Assuming it does not break German systems and left immune
>> Japanese ones  :-?
>>
>> I will try to install the same in a W10 Pro and if that
>> does not segfault I can try the lengthy process to compare
>> the object/dll/exec files to see where is the difference.
>>
>>
>> Corinna,
>> there are specific code differences in Cygwin DLL between
>> W10 Home and Pro ?
> 
> Sorry for the late reply, Marco.
> 
> No, there are no code differences in Cygwin based on "Home" vs.  "Pro"
> vs. "Enterprise" editions.  Differences are mainly based on Windows
> versions, as in W10 1803, W10 1809, etc.  Other differences in code
> execution are based on workstation vs. server (evaluating scheduling
> timing from registry) or stand-alone vs. domain machine (passwd/group
> stuff).  Of course, even small differences in your setup (Windows
> permissions, etc.) may lead to very different code execution.
> 
> If you suspect a Cygwin bug, it would be helpful to see an strace
> of the crash.
> 
> 
> Corinna
> 

If is a BUG, it seems at compilation time as it produces binary with
different behaviour than before.
I was not able to segfault the old binary, I have problem in
all new built binaries.

I assume the 1909 build 18363.592 2020-01-14 arisen it.

As Octave uses gnulib, it is possible that the changes in MS are causing
a different subset of gnulib to be used than before, may be exposing
a latent bug or race.

Unfortunately my old build tree was polluted by mistake, so I can
not directly compare a good build tree versus a failing one.

Just noticed that MS released yesterday a 18363.628 2020-01-28
unusually just 2 weeks after previous one.

https://docs.microsoft.com/en-us/windows/release-information/

Regards
Marco

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