A5-2-6 about operands consisting of a sequence of only `&&` or `||`

[zhaohui]

A5-2-6 (Required) : The operands of a logical && or \\ shall be parenthesized if the operands contain binary operators.

What about those cases whose oeprands consists of either a sequence of only logical && or ||?

Code:

void f()
{
    int a, b, c, d;
    if ((a < b) || (b < c) || (c < d)) // compliant or noncompliant
    {
    }
}

This should be a exceptional case for MISRA C++-2008 Rule 5-2-1 ( Each operand of a logical && or || shall be a postfix-expression ), does this exception apply for A5-2-6 either?

[kent.dorfman766]

I certainly would agree. where it gets muddy is if mixing || and && operator, but for the same operator throughout the expression what you state makes perfest sense to me.

[misra cpp]

From the wording of the Autosar rule, you are right that additional parentheses are required.

However, Autosar inherited this rule from MISRA C++:2008 5-2-1, and in MISRA there was an explicit exception for sequences of && and || (but not a mixture).

This is being reviewed for the next version.