Re: PG compilation error with Visual Studio 2015/2017/2019

From: Ranier Vilela <ranier(dot)vf(at)gmail(dot)com>
To: Juan José Santamaría Flecha <juanjo(dot)santamaria(at)gmail(dot)com>
Cc: davinder singh <davindersingh2692(at)gmail(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: PG compilation error with Visual Studio 2015/2017/2019
Date: 2020-04-15 19:12:08
Message-ID: CAEudQAq+13rWjj8h=zT61Lv5RrHi-FPAZSedezyj5fU-PSGAig@mail.gmail.com
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Em qua., 15 de abr. de 2020 às 15:28, Juan José Santamaría Flecha <
juanjo(dot)santamaria(at)gmail(dot)com> escreveu:

>
>
> On Wed, Apr 15, 2020 at 4:46 PM Ranier Vilela <ranier(dot)vf(at)gmail(dot)com> wrote:
>
>> Em qua., 15 de abr. de 2020 às 03:08, davinder singh <
>> davindersingh2692(at)gmail(dot)com> escreveu:
>>
>>>
>>> 5. Why call _create_locale if _WIN32_WINNT >= 0x0600 is true and loct is
>>>> not used?
>>>>
>>> _create_locale can take bigger input than GetLocaleInfoEx. But we are
>>> interested in
>>> *language[_country-region[.code-page]]*. We are using _create_locale to
>>> validate
>>> the given input. The reason is we can't verify the locale name if it is
>>> appended with
>>> code-page by using GetLocaleInfoEx. So before parsing, we verify if the
>>> whole input
>>> locale name is valid by using _create_locale. I hope that answers your
>>> question.
>>>
>> Understood. In this case, _create_locale, is being used only to validate
>> the input.
>> Perhaps, in addition, you could create an additional function, which only
>> validates winlocname, without having to create structures or use malloc, to
>> be used when _WIN32_WINNT> = 0x0600 is true, but it is only a suggestion,
>> if you think it is necessary.
>>
>
> Looking at the comments for IsoLocaleName() I see: "MinGW headers declare
> _create_locale(), but msvcrt.dll lacks that symbol". This is outdated
> [1][2], and _create_locale() could be used from Windows 8, but I think we
> should use GetLocaleInfoEx() as a complete alternative to _create_locale().
>
Sounds good to me, the exception maybe log error in case fail?

regards,
Ranier Vilela

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