[llvm-branch-commits] [clang] release/20.x: [ARM] Empty structs are 1-byte for C++ ABI (#124762) (PR #125191)

[Oliver Stannard via llvm-branch-commits]

ostannard wrote:

This needs release notes adding, and I can't add commits to an llvmbot PR, so I'll abandon this and create my own backport PR.

https://github.com/llvm/llvm-project/pull/125191