if err != nil {
		t.Fatalf("NewReader failed: %s", err)
	}
	if len(r.File) != 5 {
		t.Errorf("Archive has unexpected number of files, got %d, want 5", len(r.File))
	}
}

func TestCVE202139293(t *testing.T) {
	// directory size is so large, that the check in Reader.init
	// overflows when subtracting from the archive size, causing
	// the pre-allocation check to be bypassed.
	data := []byte{