Re: [RFC PATCH 1/2] grep: fallback to interpreter if JIT fails with pcre1

"brian m. carlson" [off-list ref] writes:

Considering that some Linux users use PaX kernels with standard
distributions and that most BSD kernels can be custom-compiled with a
variety of options enabled or disabled, I think this is something we
should detect dynamically.
...
My view is that JIT is a nice performance optimization, but it's
optional. I honestly don't think it should even be exposed through the
API: if it works, then things are faster, and if it doesn't, then
they're not. I don't see the value in an option for causing things to be
broken if someone improves the security of the system.

I agree to both of these two points.  Thanks for a thoughtful
discussion, all.