bug#14463: coreutils-8.21 darwin regressions

[Jack Howarth]

On Sat, May 25, 2013 at 01:59:20AM -0700, Paul Eggert wrote:
> On 05/24/2013 03:46 PM, Jack Howarth wrote:
> > I tried changing the instances of _DARWIN_C_SOURCE to _POSIX_C_SOURCE in 
> > configure
> 
> That won't work, for the reasons you describe.

I am a bit unclear on that issue. Does darwin lack the complete posix support 
required for
freadahead.c, freadptr.c, fseterr.c and fseeko.c to be rewritten to support 
compiling with
-D_POSIX_C_SOURCE (at least for modern darwin releases)? Or has it just never 
been implemented
in order to maintain support for legacy versions of darwin?

> 
> How about this idea: modify getgroups.m4 to recognize
> the Darwin situation and compile a substitute getgroups.c,
> and modify getgroups.c to work around the Darwin problem
> by defining a rpl_getgroups that calls the correct Darwin
> getgroups.  It'll take a bit of Darwinish hacking to get
> this to work, but it should work.
> 
>