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

[via cfe-commits]

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@@ -5321,6 +5321,54 @@ class BuiltinBitCastExpr final
   }
 };
 
+class ResolvedUnexpandedPackExpr final
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cor3ntin wrote:

Can you add a comment describing this class?

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