[PATCH v2] io: Use gnulib fts implementation (BZ 22944, BZ 20331)

[Collin Funk]

Wilco Dijkstra <Wilco.Dijkstra@arm.com> writes:

>> size_t val = stdc_rotate_right ((size_t) data, 3);
>
>> That is a C2y function right? I don't think we can use it. Looking at
>> the releases with the relevant commit:
>
> See stdlib/stdbit.h - it supports all GCC releases even with hacks for GCC 3.4!

I can have a look at adding it in Gnulib this weekend (hopefully).

> (hence my proposal to drop support for such old compilers)

There was a previous thread about dropping old compiler support [1]. I
think most wanted to keep it around in headers.

Collin

[1] https://inbox.sourceware.org/libc-alpha/87o6pa6ee8.fsf@gmail.com/