[cfe-dev] [PATCH] Libc++ Windows fixes (Attention all libc++ ports!!!)

[Thomas Gamper]

For whatever reason Microsoft is prefixing many standard POSIX  
functions with an underscore:

http://msdn.microsoft.com/en-us/library/ybk95axf%28v=vs.80%29.aspx

int _sprintf_l(
    char *buffer,
    const char *format,
    locale_t locale [,
       argument] ...
);

I hope this helps,
TOM


Zitat von Howard Hinnant <hhinnant at apple.com>:

> On Sep 26, 2011, at 12:30 PM, Joerg Sonnenberger wrote:
>
>> On Mon, Sep 26, 2011 at 10:02:22AM -0400, Howard Hinnant wrote:
>>> I believe it does the right thing, presuming you have uselocale that
>>> sets the per-thread locale to __l.
>>
>> Does libc++ really depend on the crappy idea of per-thread locale?
>
> libc++ depends on the existence of functions such as:
>
> int
>    sprintf_l(char * restrict str, locale_t loc, const char *  
> restrict format, ...);
>
> which are always called with the "C" locale passed to "loc".  These  
> functions exist on OS X, and have recently been implemented on  
> FreeBSD.  One way of emulating them is using a per-thread locale.
>
> In a nutshell, libc++ needs to be able to get the functionality of  
> sprintf, but using the "C" locale instead of the current global or  
> per-thread locale.  And ditto for several other C I/O functions.
>
> Howard
>
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