Re: [PATCH replace vfork with fork] remove deprecated vfork

[Paul Eggert]

On 2022-11-19 17:01, Minsoo Choo wrote:

> vfork(2) is removed on Single Unix Specifiction Issue 7, 2018 Edition.

That's OK. Gnulib uses lots of features that are not specified by POSIX. 
It does so by probing the system to see whether the feature is available 
as an extension to POSIX, which vfork often is. If future operating 
systems remove vfork, the code will continue to work because HAVE_VFORK 
won't be defined.
> However, if we really need to use vfork, we can apply
>
> # pragma GCC diagnostic push
> # pragma GCC diagnostic ignored "-Wdeprecated-declarations"
> ...
> # pragma GCC diagnostic pop
>
> to ensure to the users that our vfork is safe.

We've run into another problem like this on macOS, where it incorrectly 
complains about uses of sprintf. Perhaps Gnulib should simply use 
-Wno-deprecated-declarations on macOS?