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

[via cfe-commits]

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@@ -1965,3 +1965,51 @@ CXXFoldExpr::CXXFoldExpr(QualType T, UnresolvedLookupExpr *Callee,
   SubExprs[SubExpr::RHS] = RHS;
   setDependence(computeDependence(this));
 }
+
+ResolvedUnexpandedPackExpr::ResolvedUnexpandedPackExpr(SourceLocation BL,
+                                                       QualType QT,
+                                                       unsigned NumExprs)
+    : Expr(ResolvedUnexpandedPackExprClass, QT, VK_PRValue, OK_Ordinary),
+      BeginLoc(BL), NumExprs(NumExprs) {
+  setDependence(ExprDependence::TypeValueInstantiation |
+                ExprDependence::UnexpandedPack);
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cor3ntin wrote:

Can you add a comment referencing [temp.dep.expr] (this initially confused me)

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