AMDG Emil Dotchevski wrote:
Also, I am not necessarily advocating strong exception guarantee. I would be fine if the semantics of operator= were such that it may leave the object in a particular unusual state. The problem is that as it is now, it may leave the object in a seemingly OK state.
* "Implementation Note*: So as to make the behavior of |variant| more predictable in the aftermath of an exception, the current implementation prefers to default-construct |boost::blank| if specified as a bounded type instead of other nothrow default-constructible bounded types. (If this is deemed to be a useful feature, it will become part of the specification for |variant|; otherwise, it may be obsoleted. Please provide feedback to the Boost mailing list.)" In Christ, Steven Watanabe