[clang] [Clang] Generate the GEP instead of adding AST nodes (PR #73730)

[Eli Friedman via cfe-commits]

efriedma-quic wrote:

I agree users probably shouldn't be doing that... but given it compiles your code should handle it gracefully.  (It should just be a matter of making sure you don't recurse too deeply through the "base".)

https://github.com/llvm/llvm-project/pull/73730