## The Meaning of Rule 12.6?

6.12 Expressions

Moderators: misra-c, david ward

Hammer
Posts: 9
Joined: Thu Mar 30, 2006 1:45 pm

### The Meaning of Rule 12.6?

I am trying to understand this rule and need someone to clarify its exact meaning.

which of the following are violations of Rule 12.6?

Code: Select all

``````
if((x==y)|(y==a))/*Violation?, could || have been meant?*/
{

}
``````
This is a violation of the old equivalent rule 36 but is it still a violation now?

Code: Select all

``````
a=a+y+x+(x||y);
/*Violation, effectively boolean expression used with + operator*/

``````

Code: Select all

``````
int32_t x=5;
int32_t y=11;

if(x||y) /*Could this be a violation??? because x and y are not effectively boolean*/
{

}

``````

Thanks for you help!

misra-c
Posts: 572
Joined: Thu Jan 05, 2006 1:11 pm

Code: Select all

``````if ( ( x == y ) | ( y == a ) ) /*Violation?, could || have been meant?*/
{

}

a = a + y + x + ( x || y );``````

These are violations of 12.6. as effectively boolean expressions are being used as the operand of an operator other than &&, || and !.

Code: Select all

``````int32_t x = 5;
int32_t y = 11;

if ( x || y ) /*Could this be a violation??? because x and y are not effectively boolean*/
{

}``````

This is a violation of the first sentence of 12.6.
---
Posted by and on behalf of
the MISRA C Working Group