[clang] [Sema] Substitue parameter packs when deduced from function arguments (PR #79371)

[via cfe-commits]

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@@ -431,6 +442,17 @@ namespace deduction_after_explicit_pack {
     i<int, int>(0, 1, 2, 3, 4, 5); // expected-error {{no match}}
   }
 
+  template <typename... T>
+  void bar(args_tag<T...>, type_identity_t<T>..., int mid, type_identity_t<T>...) {}
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cor3ntin wrote:

Yes, i think we should support that, and add a test for it )as long as the standard says it should work, which i think it does

https://github.com/llvm/llvm-project/pull/79371