[clang] [clang] pointer to member with qualified-id enclosed in parentheses in unevaluated context should be invalid (PR #89713)

[Aaron Ballman via cfe-commits]

AaronBallman wrote:

Thank you for spotting this, btw!

Given the proximity to the branch date, I lean towards (1) to give us time to figure out how to properly do (3) unless someone is starting on (3) Real Soon Now™. Any disagreement @cor3ntin ?

https://github.com/llvm/llvm-project/pull/89713