[previous] 4421 [next] An expression of 'essentially enum' type (%1s) is being converted to character type, '%2s' on assignment.
Arithmetic type - Assignment

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

For example: 


/*PRQA S 1-9999 ++*/
/*PRQA S 4421 --*/

enum E {ONE, TWO};

void foo (char b);

char f4421 (enum E a)
{
  char pca = a;             /* 4421 */

  foo (ONE);                /* 4421 */

  pca = (TWO);              /* 4421 */

  return a;                 /* 4421 */
}

MISRA C:2012 Rules applicable to message 4421:

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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