[issue34663] Support POSIX_SPAWN_USEVFORK flag in posix_spawn

[Florian Weimer]

Florian Weimer <fweimer at redhat.com> added the comment:

I wouldn't bother with POSIX_SPAWN_USEVFORK on GNU/Linux.  Current versions of glibc always use a vfork-style clone call, so there would be a difference on older versions only.  But there, the vfork code has subtle bugs, so using POSIX_SPAWN_USEVFORK there is not a good idea, either.

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nosy: +fweimer

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