Rule 7.0.4 - exception for binary bitwise operators and constant operands?

[cgpzs]

Hi,

My interpretation of Rule 7.0.4 is that it does not allow this type of code:

Code:

my_function(FLAG_A | FLAG_B | FLAG_C);

This is quite frequent when interfacing with third-party as well as POSIX C APIs. Casting each argument to unsigned type would go in detriment of readability.

Would it make sense to add an exception for signed constants?

Thanks!