[previous] 0645 [next] [C] A zero width bit-field cannot be given a name.
Constraint violations REFERENCE - ISO:C90-6.5.2.1 Structure and Union Specifiers - Constraints

This is a constraint error

A zero-width bit-field cannot be named; its purpose is to indicate that no further bit-field is to be packed into the unit in which a previous bit-field was placed. In other words it is used solely for padding and no attempt should be made to access the padding bits. For example: 


/*PRQA S 553,3131,3621,3663 ++*/

struct record
{
    unsigned int a : 5;
    unsigned int   : 0;    /* OK           - unnamed zero-width bit-field  */
    unsigned int b :10;
    unsigned int c : 0;    /* Message 0645 - zero-width bit-field is named */
    unsigned int d : 3;
};

MISRA-C:2004 Rules applicable to message 0645:

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
© 2012 Programming Research.
www.programmingresearch.com 		Personality Groups | Glossary | Message Index | MISRA-C:2004 Rule Index Contents