QA·C Help - 1414

	1414	Enum object is being compared with a constant, non-enum expression using a relational operator.

Arithmetic type - Enum types		REFERENCE - ISO:C90-6.5.2.2 Enumeration Specifiers

An enum object is being compared (using a relational operator) with the value of a constant expression which is not one of the enum constants . If the value of the constant expression is the same as one of the enum constants, perhaps it would be better to use the symbolic constant instead ?

For example:


/*PRQA S 1-9999 ++*/
/*PRQA S 1414, 1317, 1410, 1475, 1476 --*/

enum SIZE   { SMALL = 2, MEDIUM = 4, LARGE = 6 };

extern void foo(enum SIZE box)
{
   if (box == LARGE ) { }       /*                     */
   if (box == 4  ) { }          /* Message 1410        */
   if (box != (2 + 3) ) { }     /* Message 1410 + 1317 */


   if (box <= MEDIUM ) { }      /*                     */
   if (box >  2  ) { }          /* Message 1414        */
   if (box < (4 + 3) ) { }      /* Message 1414 + 1475 */
   if (box <  2  ) { }          /* Message 1414 + 1476 */
}

See also:

1317 Value of constant expression is not in the enum type to which it is being converted.
1410 Enum object is being compared with a constant, non-enum expression using an equality operator.
1475 Range of possible enum values suggests this test is always true.
1476 Range of possible enum values suggests this test is always false.

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