1 files changed, 52 insertions, 14 deletions
diff --git a/source/Plugins/Language/CPlusPlus/LibCxxUnorderedMap.cpp b/source/Plugins/Language/CPlusPlus/LibCxxUnorderedMap.cpp
index c3566b7c6bfb..526bae6900f5 100644
--- a/source/Plugins/Language/CPlusPlus/LibCxxUnorderedMap.cpp
+++ b/source/Plugins/Language/CPlusPlus/LibCxxUnorderedMap.cpp
@@ -94,9 +94,30 @@ lldb::ValueObjectSP lldb_private::formatters::
         node_sp->GetChildMemberWithName(ConstString("__hash_"), true);
     if (!hash_sp || !value_sp) {
       if (!m_element_type) {
-        auto first_sp = m_backend.GetChildAtNamePath({ConstString("__table_"),
-                                                      ConstString("__p1_"),
-                                                      ConstString("__first_")});
+        auto p1_sp = m_backend.GetChildAtNamePath({ConstString("__table_"),
+                                                   ConstString("__p1_")});
+        if (!p1_sp)
+          return nullptr;
+
+        ValueObjectSP first_sp = nullptr;
+        switch (p1_sp->GetCompilerType().GetNumDirectBaseClasses()) {
+        case 1:
+          // Assume a pre llvm r300140 __compressed_pair implementation:
+          first_sp = p1_sp->GetChildMemberWithName(ConstString("__first_"),
+                                                   true);
+          break;
+        case 2: {
+          // Assume a post llvm r300140 __compressed_pair implementation:
+          ValueObjectSP first_elem_parent_sp =
+            p1_sp->GetChildAtIndex(0, true);
+          first_sp = p1_sp->GetChildMemberWithName(ConstString("__value_"),
+                                                   true);
+          break;
+        }
+        default:
+          return nullptr;
+        }
+
         if (!first_sp)
           return nullptr;
         m_element_type = first_sp->GetCompilerType();
@@ -152,22 +173,39 @@ bool lldb_private::formatters::LibcxxStdUnorderedMapSyntheticFrontEnd::
       m_backend.GetChildMemberWithName(ConstString("__table_"), true);
   if (!table_sp)
     return false;
-  ValueObjectSP num_elements_sp = table_sp->GetChildAtNamePath(
-      {ConstString("__p2_"), ConstString("__first_")});
+
+  ValueObjectSP p2_sp = table_sp->GetChildMemberWithName(
+    ConstString("__p2_"), true);
+  ValueObjectSP num_elements_sp = nullptr;
+  llvm::SmallVector<ConstString, 3> next_path;
+  switch (p2_sp->GetCompilerType().GetNumDirectBaseClasses()) {
+  case 1:
+    // Assume a pre llvm r300140 __compressed_pair implementation:
+    num_elements_sp = p2_sp->GetChildMemberWithName(
+      ConstString("__first_"), true);
+    next_path.append({ConstString("__p1_"), ConstString("__first_"),
+                      ConstString("__next_")});
+    break;
+  case 2: {
+    // Assume a post llvm r300140 __compressed_pair implementation:
+    ValueObjectSP first_elem_parent = p2_sp->GetChildAtIndex(0, true);
+    num_elements_sp = first_elem_parent->GetChildMemberWithName(
+      ConstString("__value_"), true);
+    next_path.append({ConstString("__p1_"), ConstString("__value_"),
+                      ConstString("__next_")});
+    break;
+  }
+  default:
+    return false;
+  }
+
   if (!num_elements_sp)
     return false;
   m_num_elements = num_elements_sp->GetValueAsUnsigned(0);
-  m_tree =
-      table_sp
-          ->GetChildAtNamePath({ConstString("__p1_"), ConstString("__first_"),
-                                ConstString("__next_")})
-          .get();
+  m_tree = table_sp->GetChildAtNamePath(next_path).get();
   if (m_num_elements > 0)
     m_next_element =
-        table_sp
-            ->GetChildAtNamePath({ConstString("__p1_"), ConstString("__first_"),
-                                  ConstString("__next_")})
-            .get();
+        table_sp->GetChildAtNamePath(next_path).get();
   return false;
 }