[clang] [clang] Don't treat extraneous `template<>` tags as member specializations (PR #227358)

[Vlad Serebrennikov via cfe-commits]

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@@ -370,8 +370,6 @@ namespace cwg531 { // cwg531: partial
     //   expected-note@#cwg531-A-char {{'template<>' header not required for explicitly-specialized class 'cwg531::bad::A<char>' declared here}}
     template<> struct A<char>::B {};
     // expected-error at -1 {{extraneous 'template<>' in declaration of struct 'B'}}
-    // expected-error at -2 {{specialization of member 'cwg531::bad::A<char>::B' does not specialize an instantiated member}}
-    //  expected-note@#cwg531-B {{attempt to specialize declaration here}}
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Endilll wrote:

> In the standard's example A<char> isn't explicitly specialized

Thank you, this is what I've missed. Removing those diagnostics makes sense to me now.

https://github.com/llvm/llvm-project/pull/227358