[clang] [Clang] Use the templated declaration for DiagnoseUseOfDecl (PR #161900)

[Corentin Jabot via cfe-commits]

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@@ -1,5 +1,5 @@
-// RUN: %clang_cc1 %s -verify -fno-builtin -std=c++14
-// RUN: %clang_cc1 %s -verify -fno-builtin -std=c++14 -fexperimental-new-constant-interpreter
+// RUN: %clang_cc1 %s -verify -fno-builtin -std=c++20
+// RUN: %clang_cc1 %s -verify -fno-builtin -std=c++20 -fexperimental-new-constant-interpreter
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cor3ntin wrote:

Can we keep c++14? (even if we add 20)

https://github.com/llvm/llvm-project/pull/161900