[libc-commits] [libc] [libc] avoid type-pruning with inactive union member (PR #116685)

[Nick Desaulniers via libc-commits]

nickdesaulniers wrote:

If this is to avoid UB, does UBSan flag this code in particular? IDK if it has a check for type punning in C++ (I was familiar with C rules, not C++ so this is surprising to me why we need this change).

https://github.com/llvm/llvm-project/pull/116685