Increment a uint variable results in unexpected value

Question

I have the function resolveProject() in my contract, which iterates over a list of Task, let's say 2, both with status 3.

function resolveProject() {
    // ...

    uint closedTask;
    uint totalPayout;

    for(uint i=0; i<taskIds.length; i++){
        if(tasks[taskIds[i]].status == 3) {
            // Issue here
            closedTask = closedTask + 1;
            totalPayout += tasks[taskIds[i]].compensationOracle;
        }
    }
    // ...
}

After one iteration, the line closedTask = closedTask + 1 assign 1000000000000000000 to the variable, where my intention would be to set it to 1. I tried also using closedTask++ with the same result.

1000000000000000000 gwei is 1 eth, is this some sort of implicit conversion happening? I get this when running on Remix JavaScript VM.

Edit 1

The Solidity code works actually fine, but I think there might be a bug in the debug panel of Remix

at line 146 there is a comparison between closedTask and taskIds.length. The latter has 3 items, as you can see on the right, but closedTask in debug panel shows 3000000000000000000. Still that comparison returns true when runs, I can confirm the projectStatus set to 2.

Edit 2 I created a bug in remix-ide' github, it has been tagged as bug so I assume this confirms there is a minor bug with Remix debug console.

https://github.com/ethereum/remix-ide/issues/1599

Answer 1

It should only be adding 1. The problem is almost definitely in the method you're using to read the variable, which we can't see.

Write some tests, and if your tests fail, post the failing test.