[previous] 0644 [next] [C] Width of bit-field must be no bigger than the width of an 'int'.
Constraint violations REFERENCE - ISO:C90-6.5.2.1 Structure and Union Specifiers - Constraints

This is a constraint error

The width of this bit-field exceeds the number of bits in an 'int' type, as configured with the -size option (compiler personality). This is not permitted.

For example: 


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

struct ST
{
   unsigned int xbit: 48;     /* Message 0644 - unless int contains at least as many bits */
};

MISRA C:2012 Rules applicable to message 0644:

Rule-1.1  (Required) The program shall contain no violations of the standard C syntax and constraints, and shall not exceed the implementation's translation limits

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