Caught an exception

Last night I caught my first exception. You can't rethrow, you can't catch anything but ..., and the compiler crashes if you try to insert code after a throw in a try. But it works.

EH intrinsics on the LLVM level are pretty broken. Fortunately, one of the ways in which they are broken is coming up puppy.

I also implemented but have not yet tested special semantics for destroying members in constructors that throw.

I think that catching non-... things is the most useful feature to add next. I think that in theory, it's a relatively simple deal now that I have the rest of the infrastructure done. After that, rethrowing. After that, test test test.

I actually kinda... don't know where to go now. I didn't expect exceptions to be so simple. I practically spent more time on RTTI or Itanium-compatible layout.