A project I work on is currently working through a bunch of performance issues that arose because we had inlined functions in `pxd` files that we did not declare `noexcept nogil`. So, heads up if you see similar regressions! We saw a ridiculous slowdown (7s to 100m, for one suite) because they were inside some awfully tight loops. But the fix was pretty straightforward once we worked it out.
Yep, my yesterday was also filled with figuring out this issue and changing these annotations. Heads up that the default exception forwarding also breaks function pointer types if you share them with the wrapped C code.
