453     struct DiffNode {  struct in __anon265222710111::TemplateDiff::DiffTree
454       DiffKind Kind;
457       unsigned NextNode;
460       unsigned ChildNode;
463       unsigned ParentNode;
466       QualType FromType, ToType;
469       Expr *FromExpr, *ToExpr;
472       bool FromNullPtr, ToNullPtr;
476       TemplateDecl *FromTD, *ToTD;
479       Qualifiers FromQual, ToQual;
482       llvm::APSInt FromInt, ToInt;
485       bool IsValidFromInt, IsValidToInt;
488       ValueDecl *FromValueDecl, *ToValueDecl;
492       bool FromAddressOf, ToAddressOf;
495       bool FromDefault, ToDefault;
498       bool Same;
500       DiffNode(unsigned ParentNode = 0)  in DiffNode()  argument