Ruby (and a few other languages) have a 'retry' keyword, which retries the block of code that had the begin/rescue around it (if this existed in C++ the try block would be executed again).

begin processing() rescue retry end

In general this is a better solution because it forces a more structured style of programming than opening up the scope of where the exception occurred and allowing it to be manipulated. Opening up the scope would be more powerful, but it would make the code harder to verify as being correct, and is open to abuses.