[libcxx-commits] [PATCH] D102781: [libc++] Assume that __wrap_iter always wraps a fancy pointer.

[Arthur O'Dwyer via Phabricator via libcxx-commits]

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So `__wrap_iter<reverse_iterator<int*>>` should be considered IFNDR, and every `__wrap_iter` should advertise contiguity in C++20.
Drive-by simplify some type traits.

This wraps up the pieces of D101404 <https://reviews.llvm.org/D101404> that didn't get merged yet but which I still consider good ideas.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D102781

Files:
  libcxx/include/__iterator/iterator_traits.h
  libcxx/include/iterator
  libcxx/test/libcxx/iterators/contiguous_iterators.pass.cpp

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