QA·C Help - 2850

	2850	Constant: Implicit conversion to a signed integer type of insufficient size.

Conversion to signed

A constant expression is being implicitly converted to a signed type which is not large enough to represent the value. The results of this operation will be implementation-defined.

For example:


/*PRQA S 274,2017,2984,2982,2983,2986,3120,3203,3211,3408,3602 ++*/

extern void foo(void)
{
    signed char sca;

    sca = 127;              /*      */
    sca = 130;              /* 2850 */
    sca = -127;             /*      */
    sca = -130;             /* 2850 */
}

MISRA C:2012 Rules applicable to message 2850:

Rule-10.3 (Required)

The value of an expression shall not be assigned to an object with a narrower essential type or of a different essential type category.

See also:

2851 Definite: Implicit conversion to a signed integer type of insufficient size.
2852 Apparent: Implicit conversion to a signed integer type of insufficient size.
2853 Suspicious: Implicit conversion to a signed integer type of insufficient size.
2855 Constant: Casting to a signed integer type of insufficient size.
2856 Definite: Casting to a signed integer type of insufficient size.
2857 Apparent: Casting to a signed integer type of insufficient size.
2858 Suspicious: Casting to a signed integer type of insufficient size.

QA·C Source Code Analyser 8.1
MISRA C:2012 Compliance Module 1.0
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