[libcxx-commits] [libcxx] [llvm] [libc++][CI] Upgrade compiler HEAD version to Clang-20 (PR #108761)

[Hristo Hristov via libcxx-commits]

Zingam wrote:

@robincaloudis The failing tests related to `span` should be fixed in a separate PR. I'm not sure why they are failing in C++20/23 mode with Clang20 suddenly. Here is a blog post detailing the ordeal: https://quuxplusone.github.io/blog/2021/10/03/p2447-span-from-initializer-list/

https://github.com/llvm/llvm-project/pull/108761