[libunwind] [libunwind][cmake] Compile _Unwind* routines with -fexceptions (PR #121819)

[Paul Kirth via cfe-commits]

ilovepi wrote:


> Should I open a new issue for this? Since it won't actually happen in reality unless libunwind does switch to use `-fexceptions` to compile the whole library, I'm not sure what to do.

I think its fine to file an issue like this to track that we know this is a limitation. I'd just make it explicit that this is a potential issue for the future, and that would need to be addressed before we would make such a change. In my opinion discussions like this in a code review are a bit harder to find than a proper issue, and having an issue handy that points to this discussion is a good way to make sure we don't lose context.

https://github.com/llvm/llvm-project/pull/121819