[previous] 4342 [next] An expression of 'essentially unsigned' type (%1s) is being cast to enum type '%2s'.
Arithmetic type - Casts

This message is issued whenever an expression of essentially unsigned type has been cast to an enum type.

For example: 


/*PRQA S 1-9999 ++*/
/*PRQA S 4342 --*/

enum E {ONE, TWO};

void foo (enum E b);

enum E f4342 (unsigned short a)
{
  foo ((enum E) a);         /* 4342 */

  foo ((enum E) (a + 1u));  /* 4342 */

  return ((enum E) a);      /* 4342 */
}

MISRA C:2012 Rules applicable to message 4342:

Rule-10.5  (Advisory) The value of an expression should not be cast to an inappropriate essential type

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