It was my first month as a driver developer fresh out of grad school, at a semiconductor company. There was an elusive memory alignment bug that had eluded the experts on the team. Of course, they had to assign it to me.

I was looking at the code where alignment was being calculated for nested structures case. I saw something funny: "size_t(object)". I asked the expert where it should have been "sizeof(object)". And, sure enough it was!!

I was super-thrilled to have fixed a bug in my first month, which had troubled the team for a long time! ^_^