[libcxx-commits] [libcxx] [libc++][NFC] Remove a bunch of redundant ASan existence checks (PR #128504)

[Louis Dionne via libcxx-commits]

ldionne wrote:

Please let us know. I wouldn't be surprised if that was related to the number of constexpr operations we're doing before/after. If that's the case though, I don't think it makes sense to keep the `#ifdef` (i.e. revert) just for that because adding any other function calls inside `string` could in theory trigger the same issue. This probably points to something written very poorly in the user code?

https://github.com/llvm/llvm-project/pull/128504