[libcxx-commits] [libcxx] [libc++] Remove UB from std::map __tree_node construction (PR #153908)

[Nikolas Klauser via libcxx-commits]

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@@ -572,7 +574,8 @@ public:
 
   _LIBCPP_HIDE_FROM_ABI void __set_parent(pointer __p) { __parent_ = static_cast<__end_node_pointer>(__p); }
 
-  ~__tree_node_base()                                  = delete;
+  _LIBCPP_HIDE_FROM_ABI __tree_node_base()             = default;
+  _LIBCPP_HIDE_FROM_ABI ~__tree_node_base()            = default;
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philnik777 wrote:

I think we can just remove this line. Possibly also the the default constructor?

https://github.com/llvm/llvm-project/pull/153908