[llvm-branch-commits] [clang] release/21.x: [clang] Fix potential constant expression checking with constexpr-unknown. (PR #149402)

[Tobias Hieta via llvm-branch-commits]

tru wrote:

@AaronBallman can you review or ask someone to do that? This seems to be blocking another fix in #150015 

https://github.com/llvm/llvm-project/pull/149402