Rule 15.4 - no boolean switch expressions

[eddieh]

I don't believe my compiler's interpretation of rule 15.4 is consistent with the Standard's...

The Standard says:

Code:

switch( x == 0 )
{
    ...

is non-compliant, which seems reasonable. However, my compiler complains about:

Code:

enum_type x;

switch( x )
{
    case ENUM_A :
        do_stuff;
        break;
    default :
        /* No action */
        break;
}

Because 'x' is an enumerated type, I like to make it clear that we do_stuff for a particular subset of possible values.

What is intended interpretation of this rule? There is no explanation in the Standard.

Many thanks in advance for any comments.

Cheers,
Eddie.