You might consider trying a harder regex for a benchmark like this. The problem with 'Jesus' is that it's a simple literal and is basically the best case for a

You might consider trying a harder regex for a benchmark like this. The problem with 'Jesus' is that it's a simple literal and is basically the best case for a tool like ripgrep. It won't even touch the regex engine and will instead stay in highly optimized SIMD code that is unlikely to be impacted by whether overflow checks are enabled or not. (Because it's already optimized to produce good codegen.) Try something like '\w+\s+\w+' instead. That will force the regex engine to run and you might see more impact from overflow checks. (But I'm just guessing.)