It is both.
Probably gcc maintainers found implementation that does not respect some standard, that is why it is defined and undefined.
How about maintainresses or maintainesses, do not know how it is correctly?
For me such question is very specific, however, I found some redundancy in it.
Here in this question can`t open storyboard on stable version Xcode author used his or hers language for identifying himself or herself.
Same as in this answer Create delegate from constructor
I found only 70+ questions with this link https://stackoverflow.com/search?tab=votes&q=ru.stackoverflow.com&searchOn=3
While there 80+ for https://stackoverflow.com/search?q=PGPPublicKeyRing Where I read What are the main differences between JWT and OAuth authentication? from a person in India because it is comprehensible.
I would never found it in India, both vice versa.
Moreover they have habrahabr.
But what if you shy or got banned.
Or if I am banned here, it is clearly all answers and questions are for review of an author or authoress.
A bottomline: clearly a question here should have an language property rather than domains.