QA·C Help - 3947

	3947	unsigned short value returned from short %s().

Arithmetic type - Implicit conversions

An expression of type unsigned short is being implicitly converted to type signed short. A conversion of this type is dangerous because the value may not be representable in this signed type.

Implicit type conversions of this nature can occur in the context of:

initializations
assignment operations
the passing of a function argument
the return of a value from a function


/*PRQA S 2017,3197,3199,3203,3227,3408,3447,3602,3625 ++*/

extern void ef(signed short f);

extern signed short foo(unsigned short n)
{
    signed short f = n;         /* Message 3747 - Initialization */

    f = n;                      /* Message 3747 - Assignment */

    ef(n);                      /* Message 3747 - Function argument */

    return n;                   /* Message 3947 - Function return */
}

No MISRA C:2012 Rules applicable to message 3947

See also:

3747 Implicit conversion: unsigned short to short.

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MISRA C:2012 Compliance Module 1.0
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