No reference to `readv` or `writev`. This makes `libcxx` happy when compiling against clang's `libc` as part of https://github.com/llvm/llvm-project/issues/97191.
No reference to `readv` or `writev`. This makes `libcxx` happy when compiling against clang's `libc` as part of https://github.com/llvm/llvm-project/issues/97191.