[previous] 4480 [next] A non-constant expression of 'essentially signed' type (%1s) is being returned from a function defined with a wider signed return type, '%2s'.
Arithmetic type - Assignment

This message is issued whenever a non-constant expression of essentially signed type is implicitly converted to a wider signed integer type in a return statement.

For example: 


/*PRQA S 1-9999 ++*/
/*PRQA S 4480 --*/

int f4480 (short a)
{
  return a;                 /* 4480 */

  return (a - 1);           /* 4480 */
}

For the purposes of QAC conversion messages, types are ordered according to the configured size (-s option), by default; hence for a typical 32 bit configuration, types int and long will be considered equivalent. However, when the -strictrank option is specified, types will be ordered according to their rank; consequently int will be considered narrower than long.

No MISRA C:2012 Rules applicable to message 4480

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