[Bug c++/100358] Not all filesystems support posix_fallocate() (e.g. ZFS)

[andy at omnios dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100358

--- Comment #1 from andy at omnios dot org ---
From
https://pubs.opengroup.org/onlinepubs/9699919799/functions/posix_fallocate.html

    [EINVAL]
    The len argument is less than zero, or the offset argument is less than
    zero, or the underlying file system does not support this operation.