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Re: help making a cmake check for _Atomic?

From: Cristian Rodríguez via curl-library <curl-library_at_lists.haxx.se>
Date: Sun, 12 Jun 2022 18:39:16 -0400

On Sun, Jun 12, 2022 at 6:18 PM Daniel Stenberg <daniel_at_haxx.se> wrote:
>
> On Sun, 12 Jun 2022, Cristian Rodríguez wrote:
>
> > That does not appear to be the right way..
> >
> > __STDC_NO_ATOMICS__ means _Atomic is *not* implemented .
> >
> > it is not a library feature.
>
> I don't understand this remark. We don't check for __STDC_NO_ATOMICS__ at
> all?


In the referenced PR there is no check on __STDC_NO_ATOMICS__ which is
actually the only thing that matters. _Atomic need implementation
defined compiler support.

http://port70.net/~nsz/c/c11/n1570.html#7.17
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Received on 2022-06-13