[Lldb-commits] [lldb] [LLDB] Avoid crashes when inspecting MSVC STL types (PR #140761)

[Michael Buch via lldb-commits]

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@@ -74,9 +74,11 @@ lldb::ChildCacheState GenericOptionalFrontend::Update() {
 
   if (m_stdlib == StdLib::LibCxx)
     engaged_sp = m_backend.GetChildMemberWithName("__engaged_");
-  else if (m_stdlib == StdLib::LibStdcpp)
-    engaged_sp = m_backend.GetChildMemberWithName("_M_payload")
-                     ->GetChildMemberWithName("_M_engaged");
+  else if (m_stdlib == StdLib::LibStdcpp) {
+    ValueObjectSP payload = m_backend.GetChildMemberWithName("_M_payload");
+    if (payload)
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Michael137 wrote:

```suggestion
    if (ValueObjectSP payload = m_backend.GetChildMemberWithName("_M_payload"))
```

https://github.com/llvm/llvm-project/pull/140761