[previous] 4521 [next] An expression of 'essentially enum' type (%1s) is being used as the %2s operand of this arithmetic operator (%3s).
Arithmetic type - Operands

This message is issued whenever an expression of essentially enum type has been used as an operand of an arithmetic operator.

For example:


/*PRQA S 1-9999 ++*/
/*PRQA S 4521,4527 --*/

enum E {ONE, TWO};

void f4521 (enum E a)
{
  a + 1;                    /* 4521 */
  
  ONE + 1;                  /* 4521 */
  
  +TWO;                     /* 4521 */

  ++a;                      /* 4527 */
}

See also:

QA·C Source Code Analyser 8.1.2
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