QA·C Help - 3789

	3789	Implicit conversion: unsigned long to signed char.

Arithmetic type - Implicit conversions

An expression of type unsigned long is being implicitly converted to type signed char. 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 char f);

extern signed char foo(unsigned long n)
{
    signed char f = n;          /* Message 3789 - Initialization */

    f = n;                      /* Message 3789 - Assignment */

    ef(n);                      /* Message 3789 - Function argument */

    return n;                   /* Message 3989 - Function return */
}

No MISRA C:2012 Rules applicable to message 3789

See also:

3989 unsigned long value returned from signed char %s().

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MISRA C:2012 Compliance Module 1.0
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