[PATCH v2] conform: Add initial support for C23.

[Joseph Myers]

On Fri, 4 Apr 2025, Collin Funk wrote:

> Hi Joseph,
> 
> As we discussed, this patch just makes C23 include every check that is
> performed by C11.
> 
> I tested the commit by adding the ISO23 Make and Python variables to be
> the same as ISO11.  So the only difference was compiling with -DISO23
> instead of -DISO11.  And changed the temporary directories to instead
> use the format f'/tmp/glibc-{self.standard}-{self.header}'.  Then I used
> a shell script to run 'cmp' on each file in the ISO11 and ISO23
> directories for each header to make sure they were the same.

Thanks.  I've verified this (and that the expectations for existing 
standards are unchanged) and pushed the patch.

-- 
Joseph S. Myers
josmyers@redhat.com