[clang] [clang] CTAD: use index and depth to retrieve template parameter for TemplateParamsReferencedInTemplateArgumentList (PR #98013)

[Haojian Wu via cfe-commits]

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@@ -2653,20 +2653,34 @@ struct ConvertConstructorToDeductionGuideTransform {
 // Find all template parameters that appear in the given DeducedArgs.
 // Return the indices of the template parameters in the TemplateParams.
 SmallVector<unsigned> TemplateParamsReferencedInTemplateArgumentList(
-    ArrayRef<NamedDecl *> TemplateParams,
+    const TemplateParameterList* TemplateParamsList,
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hokein wrote:

> In fact, TemplateParameterList will just return the depth of its first parameter.

I think it is fine, my understanding is that all parameters within a template parameter list should have the same depth,

https://github.com/llvm/llvm-project/pull/98013