[previous] 4424 [next] An expression of 'essentially enum' type (%1s) is being converted to unsigned type, '%2s' on assignment.
Arithmetic type - Assignment

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

For example: 


/*PRQA S 1-9999 ++*/
/*PRQA S 4424 --*/

enum E {ONE, TWO};

void foo (unsigned b);

unsigned f4424 (enum E a)
{
  unsigned uia = a;         /* 4424 */

  foo (ONE);                /* 4424 */

  uia = TWO;                /* 4424 */

  return a;                 /* 4424 */
}

MISRA C:2012 Rules applicable to message 4424:

Rule-10.3  (Required) The value of an expression shall not be assigned to an object with a narrower essential type or of a different essential type category.

QA·C Source Code Analyser 8.1
MISRA C:2012 Compliance Module 1.0
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