[libcxx-commits] [libcxx] [libc++] Regenerate transitive include. (PR #202001)

[Louis Dionne via libcxx-commits]

ldionne wrote:

I think we have been following a consistent pattern so far where headers are empty (whether included in a previous standard mode, or e.g. `<locale>` when localization is disabled), not a `#error`. I think this behavior is also (the only way to be?) consistent with headers that provide partial contents (e.g. some parts of the header are provided, others are not).

> Also, do we want to support including <barrier> etc. in no-threads modes, in which they just effectively provide nothing?

Following the reasoning above based on prior art, I would say that we do want to support that. Don't we already support that?

If we agree on this, then I think the transitive includes machinery should simply be fixed to reflect that.

https://github.com/llvm/llvm-project/pull/202001