[Lldb-commits] [lldb] [lldb][DataFormatter] unordered_map: account for new libc++ __hash_node layout (PR #68574)

[Alex Langford via lldb-commits]

================
@@ -162,10 +162,21 @@ lldb::ValueObjectSP lldb_private::formatters::
       if (!node_sp || error.Fail())
           return nullptr;
 
-      value_sp = node_sp->GetChildMemberWithName("__value_");
       hash_sp = node_sp->GetChildMemberWithName("__hash_");
-      if (!value_sp || !hash_sp)
+      if (!hash_sp)
         return nullptr;
+
+      value_sp = node_sp->GetChildMemberWithName("__value_");
+      if (!value_sp) {
+        // Newer libc++ versions wrap the `__value_` in an anonymous union.
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bulbazord wrote:

It might be useful to specify when this was introduced in libc++ in case this logic gets updated again in the future for an even newer libc++.

https://github.com/llvm/llvm-project/pull/68574