llvm-project

608012ac - [libc++] Simplify the implementation of iostream.cpp (#124103)

[libc++] Simplify the implementation of iostream.cpp (#124103) This refactors the standard stream implementation in multiple ways: - The streams are now `stream_data` structs, which contain all the data required for a stream - The windows mangling is generated via a macro instead of having magic strings for the different streams. (i.e. it's now only partially magic)