[clang] [clang][Sema] Check conditional branches inside a comma operand (PR #220573)

[Aditya Medhane via cfe-commits]

flash1729 wrote:

> @flash1729 Please disclose any use of AI

Apologies for that, I should have mentioned this earlier.

I used Claude Code to walk through the issue and work out where the fix belonged. I wrote it up, built it, and ran the tests myself, and I'm happy to answer questions about any part of it. I'll add an Assisted-by note to the PR description.

little heads up -- my university exams have started, so I'll get to the remaining reviews once they're done, in about two weeks.

https://github.com/llvm/llvm-project/pull/220573