[clang] [Clang] Implement P2308R1 - Template Parameter Initialization. (PR #73103)

[Aaron Ballman via cfe-commits]

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@@ -62,7 +62,7 @@ namespace ClassNTTP {
   template<A a> constexpr int f() { return a.y; }
   static_assert(f<A{1,2}>() == 2);
 
-  template<A a> int id;
+  template<A a> int id; // expected-note {{passing argument to parameter 'a' here}}
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AaronBallman wrote:

What diagnostic is this note associated with?

https://github.com/llvm/llvm-project/pull/73103