Re: [New module] Persistent Hash Array Mapped Tries (HAMTs)

[Marc Nieper-Wißkirchen]

Am Sa., 10. Okt. 2020 um 19:41 Uhr schrieb Bruno Haible <bruno@clisp.org>:
>
> Hi Marc,
>
> > Is there a special Gnulib way (or Autoconf macro) for the following test:
> >
> > #if defined (__STDC_VERSION__) && __STDC_VERSION__ >= 201112L &&
> > !defined (__STD_NO_ATOMICS__)
> >
> > I am asking because there may be non-C11 compilers that nevertheless
> > understand _Atomic.
>
> And there may be C11 compilers which don't support _Atomic and nevertheless
> dont't define __STD_NO_ATOMICS__.
>
> So, indeed it would be useful to have an Autoconf macro that tests whether
> _Atomic can be used.

If someone is able to provide such a macro for Gnulib, I would replace
my check with this macro.