[ITA] llvm

[Jeremy Drake]

On Sun, 1 Jun 2025, Jon Turney wrote:

> What do you think are the remaining issues (if any?) to resolve before this
> can be deployed?

I think it's about ready for a test release anyway.  I would probably not
have clang_REQUIRES have libc++-devel and libunwind-devel in it, I have
not personally even tried using libc++ or libunwind on Cygwin so it's
definitely not "required".  There are issues that I think need figuring
out before libc++ could be considered 'stable'. (such as
https://github.com/llvm/llvm-project/pull/141040, and some incompatiblity
with Cygwin's definition of PTHREAD_MUTEX_INIT that precludes constinit)

There are a number of test failures, particularly in llvm.  A bunch of
them are JIT related segfaults, so I kind of suspect some sort of
low-hanging fruit fix that could knock out several of them at once.  I
haven't gotten a chance to look into that yet though.  Once it was good
enough to get rust going I was trying to help with that instead.