Symbol management in header files

[Paul Eggert]

On 10/18/2016 09:00 AM, Carlos O'Donell wrote:
> Is _GNU_SOURCE too big of a feature macro to be useful anymore?

No, it's what is wanted in many GNU applications (e.g., GNU Emacs, 
coreutils). Their 'configure' scripts rely on _GNU_SOURCE, and when new 
features like iszero are added to the GNU system, these applications are 
updated accordingly. For these applications, I daresay that 
smaller-scope macros would be less appealing than the current situation; 
they'd continue to use _GNU_SOURCE.