mizvekov added inline comments.

================
Comment at: clang/lib/AST/ASTContext.cpp:5119
     // Find the insert position again.
-    DependentTemplateSpecializationTypes.FindNodeOrInsertPos(ID, InsertPos);
+    [[maybe_unused]] auto *Nothing =
+        DependentTemplateSpecializationTypes.FindNodeOrInsertPos(ID, 
InsertPos);
----------------
erichkeane wrote:
> Instead of `maybe_unused` put this and the assert inside of a `#if NDEBUG` so 
> we don't do the `Nothing` work.  Same below.
We still need to do the `FindNodeOrInsertPos` bit, to refresh the insert 
position.
So I think this would end up too noisy to add two sets of blocks.


================
Comment at: clang/lib/Sema/SemaTemplate.cpp:5817
           // fall back to just producing individual arguments.
-          Converted.insert(Converted.end(),
-                           ArgumentPack.begin(), ArgumentPack.end());
+          for (const TemplateArgument &I : ArgumentPack)
+            Converted.push_back(Context.getCanonicalTemplateArgument(I));
----------------
erichkeane wrote:
> Ooh, thats a transform!  
> 
> `llvm::transform(ArgumentPack, std::back_inserter(Converted), [](const auto 
> &I) { return Context.getCanonicalTemplateArgument(I));`
That is true, though unless we can come up with a clearer spelling for that, it 
looks less readable to me.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D133072/new/

https://reviews.llvm.org/D133072

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