[libcxx-commits] [clang] [libcxxabi] [llvm] [Clang] Mangling of pack indexing type and expression for itanium (PR #123513)

[Younan Zhang via libcxx-commits]

zyn0217 wrote:

> It turns out we do not track partially substituted pack indexing type/expression well enough to implement the mangling for these things correctly. (and I think we might hit further issues because, generally speaking, diverging mangling for partially substituted thing is not a new problem, see for example #26427)
> 
> I'd like to merge what we have (fully substituted packs are a lot more common), and see what we can do in subsequent PRs. does that seem reasonable to you?

I'm not opposed to merging it as-is once the CI passes. Having an implementation is always better than nothing



https://github.com/llvm/llvm-project/pull/123513