Fixed a bug today that I created over a year ago.
It made a machine start doing really fucked up things like running motors when it shouldn't. My boss, an expert on the system and the code, gave me some ideas to check. He couldn't understand why it was doing it either. So I started checking things and comparing to another piece of code that does similar things. I finally found a place where I had used a really sketchy pointer. I even knew it was sketchy at the time and put a ? mark in the comments next to the line of code. I changed the code to match another system that explicitly creates the object. Then I started testing the system and boom everything is working as it should. I talked to my boss and explained everything. He said it was an easy mistake to make. Internally I was saying, "But I don't make easy mistakes. I make hard mistakes!" LOL

Got to walk away from work for the weekend knowing that my other code is a lot more solid than I was thinking earlier this week. I was starting to second guess what could possibly cause this problem and thinking there could be culprits everywhere. Boss was happy problem was solved as he is going to be showing off the system I am working on in a month at a show.