[libcxx-commits] [libcxx] [libc++] Implement P0429R9 `std::flat_map` (PR #98643)

[Louis Dionne via libcxx-commits]

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@@ -136,10 +136,16 @@ class _LIBCPP_TEMPLATE_VIS reverse_iterator
   _LIBCPP_HIDE_FROM_ABI constexpr pointer operator->() const
     requires is_pointer_v<_Iter> || requires(const _Iter __i) { __i.operator->(); }
   {
+    // std::prev does not work for bidirectional_iterator && !LegacyBidirectionalIterator
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ldionne wrote:

This should be split into its own patch, which should also fix https://github.com/llvm/llvm-project/issues/109456

https://github.com/llvm/llvm-project/pull/98643