[clang] [Clang][P1061] Add stuctured binding packs (PR #121417)

[Jason Rice via cfe-commits]

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@@ -5321,6 +5321,59 @@ class BuiltinBitCastExpr final
   }
 };
 
+// Represents an unexpanded pack where the list of expressions are
+// known. These are used when structured bindings introduce a pack.
+class ResolvedUnexpandedPackExpr final
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ricejasonf wrote:

I definitely think they could be generalized which is what I had in mind with `ResolvedUnexpandedPackExpr`. This is originally what I had for parmexprs (P1221).

https://github.com/llvm/llvm-project/pull/121417