[previous] 4481 [next] A non-constant expression of 'essentially unsigned' type (%1s) is being returned from a function defined with a wider unsigned return type, '%2s'.
Arithmetic type - Assignment

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

For example: 


/*PRQA S 1-9999 ++*/
/*PRQA S 4481 --*/

unsigned f4481 (unsigned short a)
{
  return a;                 /* 4481 */

  return (a - 1);           /* 4481 */
}

For the purposes of QA·C 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.

QA·C Source Code Analyser 8.1.2
© 2013 Programming Research.
www.programmingresearch.com 		Personality Groups | Glossary | Message Index Contents