[previous] 4022 [next] long double value returned from signed char %s().
Arithmetic type - Implicit conversions

An expression of type long double is the return expression in a function that returns a value of type signed char. An implicit conversion will occur which may result in a loss of precision as the fractional element of the value is discarded. If the integral element of the value cannot be represented in type signed char, the result will be meaningless.

For example: 


/*PRQA S 2017,3408,3447,3602 ++*/

extern long double v;

extern signed char foo ( void )
{
    /* ... */
    return(v);                          /* Message 4022 */
}

See also:

QA·C Source Code Analyser 8.1.2
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