QA·C Help - 1834

	1834	The %1s operand is constant, 'essentially signed' (%2s) and negative but will be implicitly converted to an unsigned type (%3s) in this conditional operation.

Arithmetic type - Balancing

This message is issued whenever a constant expression of essentially signed type with a negative value has been used as the 2nd or 3rd operand of the conditional operator, and undergoes a usual arithmetic conversion to an unsigned integer type (the type of the other operand). This will result in a large positive value.

For example:


/*PRQA S 1-9999 ++*/
/*PRQA S 1834 --*/

unsigned f1834 (unsigned b)
{
  return (b == 0) ? (-1) : b; /* 1834 */
}

MISRA C:2012 Rules applicable to message 1834:

Both operands of an operator in which the usual arithmetic conversions are performed shall have the same essential type category

QA·C Source Code Analyser 8.1
MISRA C:2012 Compliance Module 1.0
© 2012 Programming Research.
www.programmingresearch.com