Re: FYI: posix_fallocate, stable/15, releng15.0, and a gcc* cc1plus: some reported issues

On Sat, 7 Feb 2026 14:28:08 -0800
Rick Macklem <[email protected]> wrote:

> On Fri, Feb 6, 2026 at 7:57 PM Mark Millard <[email protected]> wrote:
> >
> > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123366#c27
> >
> > reports that for FreeBSD 15:
> >
> > ) posix_fallocate can and does return EOPNOTSUPP, at least with zfs involved
> ZFS will never know how to do this, as I understand it. (Some hint it
> may be possible
> someday, if the reservation system in ZFS is improved.)
> 
> >
> > ) the posix_fallocate man page does not document EOPNOTSUPP (not MFC'd?
> > not in a stable/15 that I checked as well)
> Yea, I suppose this should be in the man page.
> Any volunteers for a man page patch?
> 
> rick

AFAIK, ziaee@ is working very hard with this (documentations) area and
requesting reviews / helps to whom that are working on specific areas.


> > ) there is at least 1 gcc* for which its cc1plus can apparently get
> > SIGSEGV as a consequence
> >
> > --
> > ===
> > Mark Millard
> > marklmi at yahoo.com


-- 
Tomoaki AOKI    <[email protected]>