[Lldb-commits] [lldb] [lldb][DWARFASTParserClang] Added a check for the specialization existence (PR #154123)

[Michael Buch via lldb-commits]

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@@ -1676,6 +1676,13 @@ TypeSystemClang::CreateClassTemplateSpecializationDecl(
   class_template_specialization_decl->setInstantiationOf(class_template_decl);
   class_template_specialization_decl->setTemplateArgs(
       TemplateArgumentList::CreateCopy(ast, args));
+  // Specialization exists, so return nullptr.
+  void *InsertPos = nullptr;
+  if (class_template_decl->findSpecialization(args, InsertPos))
+    return nullptr;
+  // Add this specialization to the class template.
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Michael137 wrote:

```suggestion
```

https://github.com/llvm/llvm-project/pull/154123