t.Fatalf("%s:%d (#%d)\nbufio => %q, %v\nnet => %q, %v", filename, lineno, byteno, bline, berr, line, ok)
		}
		if !ok {
			break
		}
		lineno++
		byteno += len(line) + 1
	}
}

func TestDtoi(t *testing.T) {
	for _, tt := range []struct {
		in  string
		out int
		off int
		ok  bool
	}{
		{"", 0, 0, false},
		{"0", 0, 1, true},
		{"65536", 65536, 5, true},
		{"123456789", big, 8, false},