From 775cf85092ebfe333308bc51ab729ae19c3da798 Mon Sep 17 00:00:00 2001
From: chrchr <christian.riesch@live.com>
Date: Thu, 15 Feb 2024 16:57:47 +0100
Subject: [PATCH] Fix #12374 FP duplInheritedMember with template in namespace

---
 lib/checkclass.cpp |  2 ++
 test/testclass.cpp | 13 +++++++++++++
 2 files changed, 15 insertions(+)

diff --git a/lib/checkclass.cpp b/lib/checkclass.cpp
index 4ba5c964951..2a8c5b88496 100644
--- a/lib/checkclass.cpp
+++ b/lib/checkclass.cpp
@@ -3013,6 +3013,8 @@ static std::vector<DuplMemberFuncInfo> getDuplInheritedMemberFunctionsRecursive(
         for (const Function& classFuncIt : typeCurrent->classScope->functionList) {
             if (classFuncIt.isImplicitlyVirtual())
                 continue;
+            if (classFuncIt.hasFinalSpecifier())
+                continue;
             for (const Function& parentClassFuncIt : parentClassIt.type->classScope->functionList) {
                 if (classFuncIt.name() == parentClassFuncIt.name() &&
                     (parentClassFuncIt.access != AccessControl::Private || !skipPrivate) &&
diff --git a/test/testclass.cpp b/test/testclass.cpp
index 8d6fb0478cb..1946d705953 100644
--- a/test/testclass.cpp
+++ b/test/testclass.cpp
@@ -726,6 +726,19 @@ class TestClass : public TestFixture {
                                   "    void Two() = delete;\n"
                                   "};\n");
         ASSERT_EQUALS("", errout.str());
+
+        checkDuplInheritedMembers("namespace N {\n" // #12374
+                                  "    template<typename T>\n"
+                                  "    struct B {\n"
+                                  "        std::unique_ptr<B<T>> clone() const = 0;\n"
+                                  "    };\n"
+                                  "    struct D : public B<int> {\n"
+                                  "        std::unique_ptr<B<int>> clone() const final {\n"
+                                  "            return std::make_unique<D>(*this);\n"
+                                  "        }\n"
+                                  "    };\n"
+                                  "}\n");
+        ASSERT_EQUALS("", errout.str());
     }
 
 #define checkCopyConstructor(code) checkCopyConstructor_(code, __FILE__, __LINE__)