Writes at least one byte of bytes (all of it for a sink that never waits) and returns how many.
Write_Proc :: #type (data: *void, bytes: [] u8) -> s64, Io_ErrorWrites at least one byte of bytes (all of it for a sink that never waits) and returns how many.
Write_Proc :: #type (data: *void, bytes: [] u8) -> s64, Io_Error