<![CDATA[MISRA Discussion Forums - 6.21 Run-time Failures]]> https://forum.misra.org.uk/ Thu, 05 Nov 2026 15:12:47 +0000 MyBB <![CDATA[Rule 21.1: uint8 = ~uint8?]]> https://forum.misra.org.uk/showthread.php?tid=259 Wed, 17 May 2006 10:06:08 +0000 Manni]]> https://forum.misra.org.uk/showthread.php?tid=259
I use a tool, which tested code to MISRA-C:2004 compliance.

Here is a code example, on which our analyse tool says, there is a breach of rule 21.1.

Code:
...
...
int main(void)
{
...
...
    uint8_t STATE;
    uint8_t MASK;
...
...
    STATE = 0x01;
    MASK = 0x10;
...
...
    

    STATE = ~MASK;
        /* That line it is, which show up the breach of the rule*/

}

The Tool says, this breaches rule 21.1. But i think it's ok, or what do the MISRA comitee says?

thanks a lot]]>
I use a tool, which tested code to MISRA-C:2004 compliance.

Here is a code example, on which our analyse tool says, there is a breach of rule 21.1.

Code:
...
...
int main(void)
{
...
...
    uint8_t STATE;
    uint8_t MASK;
...
...
    STATE = 0x01;
    MASK = 0x10;
...
...
    

    STATE = ~MASK;
        /* That line it is, which show up the breach of the rule*/

}

The Tool says, this breaches rule 21.1. But i think it's ok, or what do the MISRA comitee says?

thanks a lot]]>