QA·C Help - 4542

	4542	A non-negative constant expression of 'essentially signed' type (%1s) is being used as the %2s operand of this bitwise operator (%3s).

Arithmetic type - Operands

This message is issued whenever a constant expression of essentially signed type with a non-negative value has been used as an operand of a bitwise operator.

For example:


/*PRQA S 1-9999 ++*/
/*PRQA S 4542-4544 --*/

void f4542 (unsigned a)
{
  1 & a;                    /* 4542 */
  
  1 | a;                    /* 4542 */
  
  ~0;                       /* 4542 */

  2 >> a;                   /* 4543 */

  a << 1;                   /* 4544 */
}

See also:

4543 A non-negative constant expression of 'essentially signed' type (%1s) is being used as the left-hand operand of this shift operator (%2s).
4544 A non-negative constant expression of 'essentially signed' type (%1s) is being used as the right-hand operand of this shift operator (%2s).

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