On Thu, Aug 18, 2022 at 6:40 AM Alexey Izbyshev <izbyshev@ispras.ru> wrote:

> Glibc doesn't implement a fallback and explicitly says it in the manual.
> Using a different implementation in musl seems undesirable.


True. I would note, however, that glibc also implements another function
"closefrom", which first calls close_range, and if it fails, falls back to
iterating /proc/self/fd.