llvm-project

64e7f72b - [libc++][ios] Applied `[[nodiscard]]` (#173520)

[libc++][ios] Applied `[[nodiscard]]` (#173520) `[[nodiscard]]` should be applied to functions where discarding the return value is most likely a correctness issue. - https://libcxx.llvm.org/CodingGuidelines.htm - https://wg21.link/iostreams.base