[clang] [clang] accept member specializations declared in class scope (PR #207256)

[Vlad Serebrennikov via cfe-commits]

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@@ -153,6 +153,12 @@ namespace cwg727 { // cwg727: partial
       // expected-error at -2 {{variable template partial specialization of 'N' not in class 'A' or an enclosing namespace}}
       //   expected-note@#cwg727-N {{explicitly specialized declaration is here}}
     };
+
+    template <class> struct E {
+      template <class> struct F {};
+    };
+    template <> template <class> struct E<void>::F {};
+    template <> template <class> struct E<char>::F {};
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Endilll wrote:

Can you duplicate one of them and show whether we diagnose redefinitions?

https://github.com/llvm/llvm-project/pull/207256