[libcxx-commits] [libcxx] [libcxx] cbegin should always return a constant iterator (PR #99915)

[A. Jiang via libcxx-commits]

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

Some coverages (perhaps for incomplete types) in these 3 files are no longer supported. Perhaps we need some guards.
- std/containers/views/views.span/span.cons/copy.pass.cpp
- std/containers/views/views.span/span.cons/span.pass.cpp
- std/containers/views/views.span/types.pass.cpp

https://github.com/llvm/llvm-project/pull/99915