t.errorf("%s: fs.Stat: %w", path, err)
		return
	}
	finfo2 := formatInfo(info2)
	if finfo2 != finfo {
		t.errorf("%s: fs.Stat(...) = %s\n\twant %s", path, finfo2, finfo)
	}

	if fsys, ok := t.fsys.(fs.StatFS); ok {
		info2, err := fsys.Stat(path)
		if err != nil {
			t.errorf("%s: fsys.Stat: %w", path, err)
			return
		}
		finfo2 := formatInfo(info2)
		if finfo2 != finfo {

//sysnb	Setregid(rgid int, egid int) (err error)
//sysnb	Setreuid(ruid int, euid int) (err error)
//sysnb	setrlimit(which int, lim *Rlimit) (err error)
//sys	Stat(path string, stat *Stat_t) (err error)
//sys	Statfs(path string, buf *Statfs_t) (err error)
//sys	Symlink(path string, link string) (err error)
//sys	Truncate(path string, length int64) (err error)
//sys	Umask(newmask int) (oldmask int)
//sys	Unlink(path string) (err error)

//go:cgo_import_dynamic libc_Setreuid setreuid "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_setrlimit setrlimit "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_Stat stat "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_Statfs statfs "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_Symlink symlink "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_Truncate truncate "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_Umask umask "libc.a/shr_64.o"

	}
}

// filesystemIsNoSUID reports whether the filesystem for the given
// path is mounted nosuid.
func filesystemIsNoSUID(path string) bool {
	var st syscall.Statfs_t
	if syscall.Statfs(path, &st) != nil {
		return false
	}
	return st.Flags&syscall.MS_NOSUID != 0
}

func syscallNoError() {
	// Test that the return value from SYS_GETEUID32 (which cannot fail)