[libcxx-commits] [libcxx] WIP [libc++][ranges] Applied [[nodiscard]] to `transform_view` (PR #204014)

[A. Jiang via libcxx-commits]

https://github.com/frederick-vs-ja requested changes to this pull request.

Please add `void` casts to relevant lines in these test files to suppress diagnostics.
- `std/ranges/range.adaptors/range.adjacent/iterator/iter_move.pass.cpp`
- `std/ranges/range.adaptors/range.chunk.by/range.chunk.by.iter/decrement.pass.cpp`
- `std/ranges/range.adaptors/range.elements/iterator/subscript.pass.cpp`
- `std/ranges/range.adaptors/range.transform/iterator/plus_minus.pass.cpp`

Error messages in CI are already sufficiently helpful to me.

https://github.com/llvm/llvm-project/pull/204014