[previous] 1861 [next] The operands of this bitwise operator are of different 'essential signedness' but will generate a result of type 'signed int'.
Arithmetic type - Balancing

The operands of this &, | or ^ operator are of different essential type categories; one is 'essentially signed' and the other is 'essentially unsigned'. Both essential types are of lower rank than type int but the result of the operation will be of type int because of integral promotion.

For example: 


/*PRQA S 1-9999 ++*/
/*PRQA S 1861 --*/

int f1861 (signed char a, unsigned char b)
{
  return (a & b);           /* 1861 */
}

MISRA C:2012 Rules applicable to message 1861:

Rule-10.4  (Required) 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
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