The "ABI now or never" paper suggests somewhere on the order of 5-10%, and that's without considering the escape pessimization. Especially with the rapid expans

The "ABI now or never" paper suggests somewhere on the order of 5-10%, and that's without considering the escape pessimization. Especially with the rapid expansion of smart pointer usage (and for good reason!). Given the major selling point of C/C++ is performance, that's not an insignificant amount.