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

[via cfe-commits]

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@@ -3395,26 +3395,37 @@ VarDecl *ValueDecl::getPotentiallyDecomposedVarDecl() {
   if (auto *Var = llvm::dyn_cast<VarDecl>(this))
     return Var;
   if (auto *BD = llvm::dyn_cast<BindingDecl>(this))
-    return llvm::dyn_cast<VarDecl>(BD->getDecomposedDecl());
+    return llvm::dyn_cast_or_null<VarDecl>(BD->getDecomposedDecl());
   return nullptr;
 }
 
 void BindingDecl::anchor() {}
 
 BindingDecl *BindingDecl::Create(ASTContext &C, DeclContext *DC,
-                                 SourceLocation IdLoc, IdentifierInfo *Id) {
-  return new (C, DC) BindingDecl(DC, IdLoc, Id);
+                                 SourceLocation IdLoc, IdentifierInfo *Id,
+                                 QualType T) {
+  return new (C, DC) BindingDecl(DC, IdLoc, Id, T);
 }
 
 BindingDecl *BindingDecl::CreateDeserialized(ASTContext &C, GlobalDeclID ID) {
-  return new (C, ID) BindingDecl(nullptr, SourceLocation(), nullptr);
+  return new (C, ID)
+      BindingDecl(nullptr, SourceLocation(), nullptr, QualType());
 }
 
 VarDecl *BindingDecl::getHoldingVar() const {
   Expr *B = getBinding();
   if (!B)
     return nullptr;
-  auto *DRE = dyn_cast<DeclRefExpr>(B->IgnoreImplicit());
+  return getHoldingVar(B);
+}
+
+VarDecl *BindingDecl::getHoldingVar(Expr *E) {
----------------
cor3ntin wrote:

This is only used one, it could be a non-member function.

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