llvm-project

2684a096 - [libc++] Document guidelines for applying [[nodiscard]] (#84000)

[libc++] Document guidelines for applying [[nodiscard]] (#84000) We've been applying ``[[nodiscard]]`` more liberally recently, but we don't have any documented guidance on when it's correct to add it. This patch adds that guidance. Follow-up patches will gradually apply it to the code base.