[summerlight]

But there are a bunch of codes which are yet to be verified as exception-safe. And in the gaming industry it's often third party code that you cannot even inspect.

[gpderetta]

The right statement is then that it is very hard to retrofit exceptions in an non-exception safe code base. Exception safety itself is not easy, as it requires different code patterns and idioms than usual.

I believe that those idioms are useful and great even for non-exceptional code, but that's another story.

[groestl]

I agree and would replace my original statment of "It's very hard to write exception safe code in C++" with this.