I think you're referencing very specific type of bugs while overlooking a whole plethora of other ways a program might fail to follow expectations.

As long as we need expressively languages, it will be possible to write bugs (be that low level languages or even "scripting" languages). And as long as we have a diverse ecosystem of hardware and software stacks (and I hope we do continue to) then there will be bugs.

Bugs are unavoidable. The point of testing frameworks / fuzzing / etc is to reduce the number and severity of bugs.

However if you do have a method of writing 100% bug free code then I'd be interesting in you sharing it ;)