[libcxx-commits] [libcxx] libcxx: fixups for __BIONIC__ (PR #219591)

[Nick Desaulniers via libcxx-commits]

nickdesaulniers wrote:

CI is red, moving to WIP.
```
/home/libcxx-builder/.buildkite-agent/builds/google-libcxx-builder-android-307ef87fee7b-1/llvm-project/libcxx-ci/libcxx/src/filesystem/operations.cpp:256:18: error: no member named 'copy_file_range' in the global namespace
  256 |     if ((res = ::copy_file_range(read_fd.fd, &off_in, write_fd.fd, &off_out, count, 0)) == -1) {
      |                  ^~~~~~~~~~~~~~~
```

https://github.com/llvm/llvm-project/pull/219591