why scope(success)?

[Walter Bright]

Walter Bright wrote:

> This doesn't work because when the scope is done, no matter how it ends, 
> A, B and C are *all* rolled back.

Eh, I misinterpreted Mike's code. Sorry.

But the uncaught_exception doesn't do the job. It only gets invoked if 
some exception is uncaught anywhere on the call stack, not if it is just 
uncaught before the destructors are called.