Re: [PATCH 1/1] libc: Added implementations and prototypes for

On Jul 29 09:29, Brian Inglis wrote:
> On 2021-07-29 03:23, Corinna Vinschen wrote:
> > On Jul 28 15:13, Joel Sherrill wrote:
> > > On Wed, Jul 28, 2021, 2:54 PM C Howland wrote:
> > > > > On Wed, Jul 28, 2021 at 1:46 PM Corinna Vinschen wrote:
> > > > > > On Jul 28 09:25, Brian Inglis wrote:
> > > > > > > On 2021-07-28 03:11, Corinna Vinschen wrote:
> > > > > > > > On Jul 24 10:37, Matt Joyce wrote:
> > > > > > > > > +#if __GNU_VISIBLE
> 
> > > > > > > > What we need, in fact, is a __POSIX_VISIBLE guard, but
> > > > > > > > here's the problem: As far as I can see, the Issue 8
> > > > > > > > draft does not yet define a version number.
> > > > > > > > If anybody has better information or a good idea
> > > > > > > > how to guard this new API in the meantime, I'm
> > > > > > > > all ears.
> 
> > > > > > > Current values are:
> > > > > > > 
> > > > > > > __POSIX_VISIBLE 199009
> > > > > > > __POSIX_VISIBLE 199209
> > > > > > > __POSIX_VISIBLE 199309
> > > > > > > __POSIX_VISIBLE 199506
> > > > > > > __POSIX_VISIBLE 200112
> > > > > > > __POSIX_VISIBLE 200809
> > > > > > > __POSIX_VISIBLE 201402
> > 
> > Where did you find the latter one?  Per the Open Group docs
> > https://pubs.opengroup.org/onlinepubs/9699919799/ the latest valid value
> > for _POSIX_C_SOURCE is still 200809, even with POSIX.1-2017.
> 
> Searched all installed include files for all __POSIX_VISIBLE date
> expressions [Paste As Quotation avoids wrapping commands and output]:
> 
> > $ grep '__POSIX_VISIBLE.*[12][90][0-9][0-9][01][0-9]' /usr/{,*86*/sys-root/*/}include/**/*.h
> 
> To answer your question:
> 
> > $ grep '__POSIX_VISIBLE.*2014' /usr/{,*86*/sys-root/*/}include/**/*.h
> > /usr/include/pthread.h:#if __XSI_VISIBLE >= 500 || __POSIX_VISIBLE >= 200112 || __cplusplus >= 201402L

Ok, but that's the version number for C++14 then...


Corinna