I had a friend who noticed that people were often mixing up the arguments to some std constructor (I think it was string with a char and other integer argument getting swapped.) He searched across Google's codebase and found many (I don't remember the exact number) cases of this, many that he could confirm to be real bugs. He spent months fixing them and I think eventually got some check added to prevent this in the future.

So this definitely isn't some theoretical problem. I wouldn't even be surprised if you had made this mistake just hadn't noticed.