[PATCH] Configure: Prefer gcc __atomic builtins instead of older __sync builtins

[Maxim Dounin]

Hello!

On Sun, Dec 03, 2017 at 09:11:52PM +0530, Debayan Ghosh wrote:

> # HG changeset patch
> # User Debayan Ghosh <debayang.qdt at qualcommdatacenter.com>
> # Date 1511884462 -19800
> #      Tue Nov 28 21:24:22 2017 +0530
> # Node ID 4576e7c90ed42da3af67d90f624b34dd9285a658
> # Parent  fc0d06224edac2c7cfbfd9a4def478f285d9957b
> Configure: Prefer gcc __atomic builtins instead of older __sync builtins
> 
> It is desirable to use the newer GCC __atomic builtins when using later
> versions of GCC , compared to the legacy __sync atomic builtins.
> Ref: https://gcc.gnu.org/onlinedocs/gcc/_005f_005fatomic-Builtins.html

Any practical reasons for the change?

Either way, I would rather suggest looking at C11 atomic ops 
instead, see here:

http://mailman.nginx.org/pipermail/nginx-devel/2016-September/008805.html

Though I don't think it's practical either.

[...]

-- 
Maxim Dounin
http://mdounin.ru/