# V6136\. Values of bit flags are duplicated\.

The analyzer has detected a group of constants that looks like a set of bit flags: consecutive static final fields, variables, or enum fields initialized with integer values which are powers of two\. One of the values in this group is repeated\. It's likely a typo caused by adding a new flag or copying from the line next to it\.

The example:

```cpp
public class FilePermission {
  public static final int READ    = 0x01;
  public static final int WRITE   = 0x02;
  public static final int EXECUTE = 0x04;
  public static final int DELETE  = 0x04;  // <=
}
```

The `EXECUTE` and `DELETE` constants share the same value\. The `(mask & DELETE) != 0` check evaluates to true when the mask contains only the execute permission, and clearing one flag also clears the other\.

The fixed code:

```cpp
public class FilePermission {
  public static final int READ    = 0x01;
  public static final int WRITE   = 0x02;
  public static final int EXECUTE = 0x04;
  public static final int DELETE  = 0x08;
}
```