[previous] 4431 [next] An expression of 'essentially signed' type (%1s) is being converted to character type, '%2s' on assignment.
Arithmetic type - Assignment

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

For example: 


/*PRQA S 1-9999 ++*/
/*PRQA S 4431 --*/

void foo (char b);

char f4431 (short a)
{
  char pca = a;             /* 4431 */

  foo (a + 1);              /* 4431 */

  pca = (a - 1);            /* 4431 */

  return a;                 /* 4431 */
}

QA·C Source Code Analyser 8.1.2
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