[libcxx-commits] [libcxx] [libc++] Cooperation between `std::optional` and other standard types (PR #93672)

[A. Jiang via libcxx-commits]

frederick-vs-ja wrote:

It seems that we can also compress `std::optional<std::span<T, N>>` where `N != std::dynamic_extent`, as it's probably UB to make construct such a `span` with a null value.

https://github.com/llvm/llvm-project/pull/93672