[previous] 1850 [next] The %1s operand is 'essentially unsigned' (%2s) but will be implicitly converted to a signed type (%3s) in this arithmetic operation.
Arithmetic type - Balancing

This message is issued whenever an expression of essentially unsigned type has been used as an operand of a binary arithmetic operator, and undergoes a usual arithmetic conversion to a signed integer type (the type of the other operand).

For example: 


/*PRQA S 1-9999 ++*/
/*PRQA S 1850 --*/

int f1850 (unsigned char a, int b)
{
  b = b + a;                /* 1850 */

  return ((a - 1) + b);     /* 1850 */
}

MISRA C:2012 Rules applicable to message 1850:

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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