Bug#119974: Bug confirmed

["H. S. Teoh" <hsteoh@quickfur.ath.cx>]

On Sat, Dec 28, 2002 at 07:23:06PM -0500, Daniel Jacobowitz wrote:
[snip]
> It's guarded by:
> #if defined __USE_BSD || defined __USE_XOPEN
> 
> _POSIX_SOURCE is:
>    _POSIX_SOURCE        IEEE Std 1003.1.
> i.e. not 1b.

Ahh, that explains it.

> On the other hand, given:
>    _POSIX_C_SOURCE      If ==1, like _POSIX_SOURCE; if >=2 add IEEE Std 1003.2;
>                         if >=199309L, add IEEE Std 1003.1b-1993;
>                         if >=199506L, add IEEE Std 1003.1c-1995
> 
> but _POSIX_C_SOURCE=199309 is not enough to turn on the prototype of
> fsync... so there is a problem, but _POSIX_SOURCE is behaving as
> intended.
[snip]

Wow, this is a messier tangle than I previously thought. :-)

Is any of this documented anywhere? I think the original bug submitter
filed the bug because according to his understanding of the documentation,
fsync *should* be included when _POSIX_SOURCE is defined. The manpage
*does* mention POSIX.1b; so if what you describe above is actually
documented somewhere, then the submitter should be referred to it, and the
bug should be closed. 


T

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