Entering a try with newer implementations of exceptions is free in that it doesn't execute anything extra, but it's not free. It inhibits the optimizer and crea

Entering a try with newer implementations of exceptions is free in that it doesn't execute anything extra, but it's not free. It inhibits the optimizer and creates a lot of duplicated code in the binary, as well as forcing exception safety on the programmer, which is pretty hard to achieve completely, efficiently, and/or cleanly.