C# tuple destructuring misidentified as bug by SC

[danielearwicker]

Returning a tuple:

(bool yep, int num) Flip(int num)
{
    return (num > 4, num);
}

Destructure into new variables:

var (yep, num) = Flip(someNumber);
if (yep) 
{

SC is happy with this.

Destructure into existing variables:

var yep = false;
var num = 0;

(yep, num) = Flip(someNumber);

if (yep)
{

SC complains that the if condition is always false.

[Colin]

Hey there.

I’ve moved your post to the section on reporting false-positives. Take a look at the following post:

How to Report a False-positive / False-negative

Hey SonarSource Community! False-positives happen, as do false-negatives, and we’re eager to fix them. We are thrilled when our users report problems, so we can make our products better. What is a false-positive (FP)? A false-positive is when an issue is raised unexpectedly on code that should not trigger an issue, or where the suggested action doesn’t make any sense for the code. What is a false-negative (FN)? A false-negative is when an issue should be raised on a piece of code, but isn’t…

Specifically, can you tell us what rule an issue is being raised for?