================
@@ -6654,6 +6658,56 @@ class SubstTemplateTypeParmType final
}
};
+/// Represents the result of substituting a set of types as a template argument
+/// that needs to be expanded later.
+///
+/// These types are always dependent and produced depending on the situations:
+/// - SubstTemplateTypeParmPack is an expansion that had to be delayed,
+/// - SubstBuiltinTemplatePackType is an expansion from a builtin.
+class SubstPackType : public Type, public llvm::FoldingSetNode {
+ friend class ASTContext;
+
+ /// A pointer to the set of template arguments that this
+ /// parameter pack is instantiated with.
+ const TemplateArgument *Arguments;
----------------
ilya-biryukov wrote:
Right, the contract is the same as `SubstTemplateTypeParmPackType` here.
It might be worth improving for both, I just tried to avoid scope creep in this
review, though.
https://github.com/llvm/llvm-project/pull/106730
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