[previous] 0478 [next] [C] 'sizeof' cannot be applied to an object of unknown size.
Constraint violations REFERENCE - ISO:C90-6.3.3.4 The sizeof Operator - Constraints

This is a constraint error

The 'sizeof' operator cannot be applied to an operand of incomplete type. For example: 


/*PRQA S 702,3313,3198,3199,3203,3227,3408,3447,3673,3684 ++*/

extern struct TAG c;
extern int buf[];

void foo (void)
{
    unsigned long n;
    n = sizeof(buf);         /* Message 478 */
    n = sizeof(c);           /* Message 478 */
}

MISRA-C:2004 Rules applicable to message 0478:

Rule  1.1  (Required) All code shall conform to ISO/IEC 9899:1990 C programming language, ISO 9899, amended and corrected by ISO/IEC 9899/COR1:1995, ISO/IEC 9899/AMD1:1995, and ISO/IEC 9899/COR2: 1996192

QA·C Source Code Analyser 8.1
MISRA-C:2004 Compliance Module 3.2
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