[libcxx-commits] [libcxx] Try to reproduce ubsan issue (PR #122389)

[Louis Dionne via libcxx-commits]

ldionne wrote:

@MBkkt Our CI should have a UBSan job, so let's see whether it complains. If it does, that's going to be something we can totally work with and address.

https://github.com/llvm/llvm-project/pull/122389