QA·C Help - 3948

	3948	unsigned short value returned from int %s().

Arithmetic type - Implicit conversions

An expression of type unsigned short is being implicitly converted to type signed int. This is dangerous if the two types happen to be implemented in the same number of bits. Implicit type conversions from an unsigned type to a signed type are not recommended.

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 int f);

extern signed int foo(unsigned short n)
{
    signed int f = n;           /* Message 3748 - Initialization */

    f = n;                      /* Message 3748 - Assignment */

    ef(n);                      /* Message 3748 - Function argument */

    return n;                   /* Message 3948 - Function return */
}

No MISRA-C:2004 Rules applicable to message 3948

See also:

3748 Implicit conversion: unsigned short to int.

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MISRA-C:2004 Compliance Module 3.2
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