> Sure, you'll lose a bit of performance due to checks for overflow... Which is why the author wants support for integer overflow traps. He even mentions Pytho

> Sure, you'll lose a bit of performance due to checks for overflow... Which is why the author wants support for integer overflow traps. He even mentions Python, which does what you describe, and suggests that other languages don't do this precisely because of the performance hit for which he's proposing a solution.