Oh hey, somebody else feels the pain! It's not only the crazy number of interfaces you have to support (not to mention that some of the interfaces are not parti

Oh hey, somebody else feels the pain! It's not only the crazy number of interfaces you have to support (not to mention that some of the interfaces are not particularly well defined, e.g. GDB's interface), but also what happens after. Most of these interfaces were not designed with very many JIT functions in mind and have O(n^2) behavior. One of the Julia core contributors recently worked with the GDB folks to fix their O(n^2), but libunwind still has it (to the point where one of the julia tests takes 15% of it's total runtime just having the unwinder try to find the JIT frame). Library support for JIT code is surprisingly bad.