[Lldb-commits] [lldb] [lldb] Support new libc++ __compressed_pair layout (PR #96538)

[Pavel Labath via lldb-commits]

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@@ -254,6 +256,29 @@ lldb_private::formatters::LibcxxStdMapSyntheticFrontEnd::
     Update();
 }
 
+llvm::Expected<uint32_t>
+lldb_private::formatters::LibcxxStdMapSyntheticFrontEnd::
+    CalculateNumChildrenForOldCompressedPairLayout() {
+  ValueObjectSP node_sp(m_tree->GetChildMemberWithName("__pair3_"));
+  if (!node_sp)
+    return 0;
+
+  // TODO: or should this just be: assert
+  // (!isOldCompressedPairLayout(*node_sp));
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labath wrote:

I don't think so, as this could also be triggered by a some change in libc++, missing/corrupted debug info, etc.

https://github.com/llvm/llvm-project/pull/96538