[kevincox]

My biggest complaint in go is "Defaults are useful" logic. I have seen numerous serious production incidents due to simple uninitialized variables. The only workaround is to use a function for all initialization but because that is more verbose it is often not done, and you lose the "keyword arguments" of struct literals.

There are other footguns like the unpredictable by-reference behaviour of slices and the printf functions corrupting your output if you make a type error but they are much less severe than the misguided idea that implicit default values are useful.