[clang] [Clang][Sema] Expression in assumption attribute should be full expression (PR #150814)

[Yanzuo Liu via cfe-commits]

zwuis wrote:

> Is there no issue associated with the crash?

I ran into this assertion failure when trying to implement cwg712. I tried to search issues but found nothing.

https://github.com/llvm/llvm-project/pull/150814