[previous] 4404 [next] An expression of 'essentially Boolean' type (%1s) is being converted to unsigned type, '%2s' on assignment.
Arithmetic type - Assignment

This message is issued whenever an expression of essentially Boolean type undergoes an assigning conversion to an unsigned integer type.

For example: 


/*PRQA S 1-9999 ++*/
/*PRQA S 4404 --*/

void foo (unsigned b);

unsigned f4404 (int a)
{
  unsigned uia = (a != 0);  /* 4404 */

  foo (a < 0);              /* 4404 */

  uia = (a < 0);            /* 4404 */

  return (a == 0);          /* 4404 */
}

MISRA-C:2004 Rules applicable to message 4404:

Rule  10.1  (Required) The value of an expression of integer type shall not be implicitly converted to a different underlying type if: a) it is not a conversion to a wider integer type of the same signedness, or b) the expression is complex, or c) the expression is not constant and is a function argument, or d) the expression is not constant and is a return expression

QA·C Source Code Analyser 8.1
MISRA-C:2004 Compliance Module 3.2
© 2012 Programming Research.
www.programmingresearch.com 		Personality Groups | Glossary | Message Index | MISRA-C:2004 Rule Index Contents