[libcxx-commits] [libcxx] [libc++] Add an ABI flag to make __bit_iterator trivially copyable (PR #172271)

[Louis Dionne via libcxx-commits]

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@@ -314,10 +314,15 @@ public:
   // When _IsConst=true, this is a converting constructor;
   // the copy and move constructors are implicitly generated
   // and trivial.
+#ifdef _LIBCPP_ABI_TRIVIALLY_COPYABLE_BIT_ITERATOR
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ldionne wrote:

Let's have two disjoint sets of constructors instead, I think it'll be a lot easier to understand.

https://github.com/llvm/llvm-project/pull/172271