for j := 0; j < len(bufsizes); j++ {
			nwrite := bufsizes[i]
			bs := bufsizes[j]

			// Write nwrite bytes using buffer size bs.
			// Check that the right amount makes it out
			// and that the data is correct.

			w.Reset()
			buf := NewWriterSize(w, bs)
			context := fmt.Sprintf("nwrite=%d bufsize=%d", nwrite, bs)
			n, e1 := buf.Write(data[0:nwrite])
			if e1 != nil || n != nwrite {

pkg syscall (netbsd-arm64-cgo), const ETHERTYPE_SPIDER = 32927
pkg syscall (netbsd-arm64-cgo), const ETHERTYPE_SPIDER ideal-int
pkg syscall (netbsd-arm64-cgo), const ETHERTYPE_SPRITE = 1280
pkg syscall (netbsd-arm64-cgo), const ETHERTYPE_SPRITE ideal-int
pkg syscall (netbsd-arm64-cgo), const ETHERTYPE_STP = 33153
pkg syscall (netbsd-arm64-cgo), const ETHERTYPE_STP ideal-int

pkg syscall (darwin-arm64), const PT_TRACE_ME ideal-int
pkg syscall (darwin-arm64), const PT_WRITE_D = 5
pkg syscall (darwin-arm64), const PT_WRITE_D ideal-int
pkg syscall (darwin-arm64), const PT_WRITE_I = 4
pkg syscall (darwin-arm64), const PT_WRITE_I ideal-int
pkg syscall (darwin-arm64), const PT_WRITE_U = 6
pkg syscall (darwin-arm64), const PT_WRITE_U ideal-int
pkg syscall (darwin-arm64), const RLIMIT_AS = 5

pkg io, type WriteCloser interface { Close, Write }
pkg io, type WriteCloser interface, Close() error
pkg io, type WriteCloser interface, Write([]uint8) (int, error)
pkg io, type WriteSeeker interface { Seek, Write }
pkg io, type WriteSeeker interface, Seek(int64, int) (int64, error)
pkg io, type WriteSeeker interface, Write([]uint8) (int, error)
pkg io, type Writer interface { Write }

pkg syscall (freebsd-arm64), const SYS_PSELECT ideal-int
pkg syscall (freebsd-arm64), const SYS_PTRACE = 26
pkg syscall (freebsd-arm64), const SYS_PTRACE ideal-int
pkg syscall (freebsd-arm64), const SYS_PWRITE = 476
pkg syscall (freebsd-arm64), const SYS_PWRITE ideal-int
pkg syscall (freebsd-arm64), const SYS_PWRITEV = 290
pkg syscall (freebsd-arm64), const SYS_PWRITEV ideal-int
pkg syscall (freebsd-arm64), const SYS_QUOTACTL = 148

pkg syscall (darwin-386), const PT_STEP = 9
pkg syscall (darwin-386), const PT_THUPDATE = 13
pkg syscall (darwin-386), const PT_TRACE_ME = 0
pkg syscall (darwin-386), const PT_WRITE_D = 5
pkg syscall (darwin-386), const PT_WRITE_I = 4
pkg syscall (darwin-386), const PT_WRITE_U = 6
pkg syscall (darwin-386), const RLIMIT_AS = 5
pkg syscall (darwin-386), const RLIMIT_CORE = 4
pkg syscall (darwin-386), const RLIMIT_CPU = 0

		{"gopher.txt", "Gopher names:\nGeorge\nGeoffrey\nGonzo"},
		{"todo.txt", "Get animal handling licence.\nWrite more examples."},
	}
	for _, file := range files {
		f, err := w.Create(file.Name)
		if err != nil {
			log.Fatal(err)
		}
		_, err = f.Write([]byte(file.Body))
		if err != nil {
			log.Fatal(err)
		}
	}

	// Make sure to check the error on Close.
	err := w.Close()
	if err != nil {

pkg syscall (freebsd-386-cgo), const SYS_FREEBSD6_MMAP ideal-int
pkg syscall (freebsd-386-cgo), const SYS_FREEBSD6_PREAD ideal-int
pkg syscall (freebsd-386-cgo), const SYS_FREEBSD6_PWRITE ideal-int
pkg syscall (freebsd-386-cgo), const SYS_FREEBSD6_TRUNCATE ideal-int
pkg syscall (freebsd-386-cgo), const SYS_FSTAT ideal-int
pkg syscall (freebsd-386-cgo), const SYS_FSTATAT ideal-int