Re: VS 2015 support in src/tools/msvc

> Michael Paquier wrote:
>
> On Sat, Apr 9, 2016 at 7:41 AM, Michael Paquier
> <michael(dot)paquier(at)gmail(dot)com> wrote:
>> On Sat, Apr 9, 2016 at 1:46 AM, Christian Ullrich <chris(at)chrullrich(dot)net> wrote:
>>> * Andrew Dunstan wrote:
>>>>> On 04/08/2016 11:02 AM, Christian Ullrich wrote:
>>>>> src/port/chklocale.c(233): warning C4133: 'function': incompatible
>>>>> types - from 'const char *' to 'LPCWSTR' [...\postgres.vcxproj]
>>>
>>>> Do you have a fix for the LPCWSTR parameter issue?
>>>
>>> As long as the locale short name cannot contain characters outside of ASCII,
>>> and I don't see how it could, just the typical measure-allocate-convert
>>> dance, add error handling to taste:
>>>
>>> int res = MultiByteToWideChar(CP_ACP, 0, ctype, -1, NULL, 0);
>>> WCHAR *wctype = malloc(res * sizeof(WCHAR));
>>> memset(wctype, 0, res * sizeof(WCHAR));
>>> res = MultiByteToWideChar(CP_ACP, 0, ctype, -1, wctype, wctypelen);
>
> I don't think that's good to use malloc in those code paths, and I
> think that we cannot use palloc as well for a buffer passed directly
> into this function, so it looks that we had better use a fix-sized
> buffer and allocate the output into that. What would be a a correct
> estimation of the maximum size we should allow? 80 (similar to
> pg_locale.c)?

I think it should not take more than 16 characters, but if you want to make sure the code can deal with long names as well, MSDN gives an upper limit of 85 for those somewhere.

--
Christian